zetor - cals servis · 3 zetor this operator’s manual will help you to become familiar with the...

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ZETOR

This operator’s manual will help you to become familiar with the operation and maintenance of your new tractor.In spite of fact that many of you have reach experiences with operation of various tractors, please, read carefully allsafety rules and operating instructions in this operator ’s manual before attempting to operate the tractor.You will find a lot of new information and receive a perfect overview how to use the tractor with highest efficiency atvarious operations.Your new Zetor tractor will be your reliable friend if observing the mentioned safety rules, tractor maintenance andsafe operationManufacturer of Your tractor wishes you thousands of satisfactorily worked hours.

ZETOR

Brno


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Information about technical specifications, design, equipment, material, and external appearance is valid in the time of printingthis operator’s manual. Manufacturer reserves all rights for changes.


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CONTENTS

The operator’s manual contains de-scription, operation and maintenance ofstandard and optional tractor equipment.Service checkbook isn ’t a part ofoperator’s manual. This is the separatebooklet that is passed to you whenpurchasing new tractor.

PageLocation of serial numbers .......................................................................................... 9Safety instructions for user........................................................................................ 12Preventive daily service ............................................................................................ 15Acquintance with tractor ............................................................................................ 23Electronic engine governor ....................................................................................... 51Operation .................................................................................................................. 63Tractor running in ......................................................................................................83Transportation ........................................................................................................... 91Driving the agricultural machines ............................................................................ 101Hydraulic system.....................................................................................................107Electro-hydraulic .....................................................................................................121Hitches .................................................................................................................... 133Wheel tread setting .................................................................................................145Balast weights .........................................................................................................155Maintenance instructions ........................................................................................ 163Adjustment .............................................................................................................. 189Electrical installation ............................................................................................... 203Planned technical maintenance .............................................................................. 219Main technical parameters ...................................................................................... 239


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ZETOR 8621, 9621 FORTERRA TURBO

F 1

Zetor 8621 Forterra turbo - 60 kWZetor 9621 Forterra turbo - 67,5 kW


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ZETOR 8641, 9641, 10641 FORTERRA TURBO

F 2

Zetor 8641 Forterra turbo - 60 kWZetor 9641 Forterra turbo - 67,5 kWZetor 10641 Forterra turbo - 76 kW

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ZETOR 11641 FORTERRA

F 3

Zetor 11641 Forterra - 81 kW



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LOCATION OF SERIAL NUMBERS Z 8621 - Z 10641 FORTERRA TURBO

F 4



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LOCATION OF SERIAL NUMBERS Z 11641 FORTERRA

F 5



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LOCATION OF SERIAL NUMBERS

Whenever you contact your authorized service dealer or the factory for order of service parts, always know the model and serialnumbers of your tractor. For your convenience, write those numbers in the frames below.

Tractor model

ZETOR 8621, 8641, 9621, 9641, 10641ZETOR 11641The “left“, “right“, “front“ and “back“ sideof the tractor is determined by travelingdirection.Manufacturer reserves rights forchanges of design and option, thatimprove the tractor features.

Tractor serial number Engine serial number

F 6



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SAFETY INSTRUCTIONS FOR USERS

Keep extreme attention whenreading parts of operator’s manualthat are marked by these symbols.

You will find this symbol at allimportant warnings identifyingthe safety of tractor operation.Keep these safety massagesand however regardless of thehazard, be extremely careful!Inform your cooperators andother users about these mes-sages.

This symbol marks all chaptersspeaking about different opera-tion, maintenance, adjustmentand safety rules at tractorsZ 11641Forterra.

Study carefully chapters markedby this symbol before startingwith operating, servicing oradjusting the tractor.

You will find this symbol when-ever important informations onoperation, adjustment and re-pairs of starter motor.Keep these regulations and beextremely careful in thesecases!

∗This symbol marks such tractorequipment that is not assembledas a standard (optionallyassembled equipment only).

GENERAL SAFETY REGULATIONS

1. Only a trained operator having a validdriving license and being properlyacquainted with operating and safetyrules can operate the tractor.2. Except of safety warnings mentionedin this operator’s manual you mustrespect all general safety and trafficregulations of country where the tractorworks.

PROPER CLOTHING

3. Don’t wear loose clothing and freeflying long hair at operation.4. Use suitable (prescribed) personalprotection means (working boots, glovesetc.) at work.

STARTING ENGINE

5. Starting the engine when driving trac-tor downhill is forbidden.6. Starting tractor by means of towingwith another tractor or vehicle is allowedonly when the pull bar is used.

7. Tractor Z 11641 can not bestarted without battery, with dis-charged battery or without exter-

nal source (see electronic governor ofinjection pump).

7. Start the tractor fromdriver’s seat only withshifting lever in neutralposition. Life hazard whenstarting by starter connec-

tor short circuit.8. The key of the key switch must be inposition "I".9. When preheating engine by electricalheater, plug the heater first and connectthe cable into electricity after. After pre-heating disconnect the cable fromelectricity first.WARNING! Electrical shock hazard

OPERATION

11. Hoses of hydrostatic steering, brakesand fuel system must be checked andreplaced in case of any damage indi-cation. The damage indication is forexample: cracks on hose surface,loosening of hose fittings (verify it by pul-ling of hose from fitting) and mechanicaldamage of hose.12. Brakes and steering must be per-manently in perfect condition.13. Brake pedals must be latched attransportation with trailers and imple-ments on the road.14. Driving downhill without shifted gearis forbidden!



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15. Pay special attention when driving onhilly, muddy, sandy, icy and uneven ter-rain.16. Don’t exceed the max. specified incli-nation angle 12

0 for 4WD tractors (res-

pectively 110 for 2WD tractors).

17. Don’t exceed the max. total weight oftrailers mentioned in the tractor serialnumber plate or rear fender label.18. Don’t use the differential lock whendriving into the turning.19. Never get out or into the driving trac-tor. This is forbidden.20. Reduce the travel speed to 20 km/hwhen transporting agricultural imple-ments hitched in the front three pointhitch.21. The front axle load must not be lowerthan 18 to 20 % of immediate total trac-tor weight when transporting agriculturalimplements hitched in the rear threepoint hitch.

TRANSPORTATION OF PERSONS,OPERATION

22. Number of persons transported bytractor must not exceed number men-tioned in tractor technical license.23. Persons, unauthorized to work withattached implement, must not standbetween tractor and hitched implement(machine).

24. Make sure neither any person norany obstacle allows driving before star-ting tractor move.25. Max. allowed travel speed of tractorand trailer equipped with one hose airtrailer brakes is 25 km/h.26. Don’t exceed the max. specifiedinclination angle 11

0 for tractors Z 8621

and Z 9621 and 120

for tractors Z 8641,Z 9641, Z 10641, Z 11641.

RELEASING AND PUSHING TRACTOR

27. Use a pull bar or a rope for releasingan immobilized tractor. Never usechains. It is life dangerous to stand nearthe rope when releasing the tractor28. Front hook assembled on front tractorframe serves for pulling the alone tractoronly, i.e. without trailer or another imple-ment.29. Never use free wooden blocks,planks or bars put between tractor andpushed subject when pushing other ve-hicles (trailers, wagons etc.).

LEAVING TRACTOR

30. Do not park the tractor with attachedimplement in lifted position.31. Don’t forget to brake the tractor withparking brake (shift the gear) remove thekey from key switch and lock the cabbefore leaving tractor.32. Shift the reverse lever into forwardposition.

33. Brake the tractor with parking brakebefore leaving tractor with running en-gine.34. Usually use the left-hand side of trac-tor- left door when leaving tractor. Lookround if any vehicle coming, that couldjeopardize your safety when leaving andopen the door.35. Use steps and handles when leavingthe tractor. When leaving tractor by theright door pay attention being in space ofshifting levers and hand throttle control.

AT STOPPED ENGINE ONLY

36. All activities like refueling cleaning,lubricating and adjusting tractor orattached implement can be done atstopped engine and stopped movingtractor parts only, except of brake,hydraulics and charging function inspec-tion.37. It is necessary to stop the enginebefore removing bonnet side shields.The engine can run in closed room andhouse only when the perfect ventilationworks. Exhaust gases are healthdangerous.



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FIRE PREVENTION RULES

38. Refuel the tractor after finishing thejob and with stopped engine.39. Don’t refuel the fuel tank up to the topin summer season. Wipe the fuelimmediately when spilled.40. Don’t refuel the tractor nearby anopen flame. Don’t smoke.41. Don’t smoke and don’t use an openflame when inspecting the batteryelectrolyte level.42. Keep properly the fire prevention re-gulations in areas with increased firehazard (hay-lofts, straw-stocks etc.).43. If the tractor is equipped with a fireextinguisher keep it ready for use.44. Use the spark arrestor when workingin fire hazard environment.

HEALTH AND ENVIRONMENT PRO-

TECTION

45. Tractors are not equipped with spe-cial ventilation filters of inlet air comingto the cab. That’s why tractors are notintended for work with aerosols andother substances harmful to health.Kerosene, diesel fuel, mineral oils andother products from crude oil used foroperation and maintenance of tractormay cause an injury in case of directcontact with skin and it can irritatemocous membranes, eyes, digestive or

respiratory organs. Some of them mightcause the total poisoning when used.46. Persons working with crude oil pro-ducts must properly keep safety andhygienic regulations, they must use thesuitable protectors and work in properlyventilated areas.

WORKING WITH CRUDE OIL PRO-DUCTS

47. Wash properly your hands with milddetergent and treat them with suitableskin ointment or cream after finishingwork or before eating.48. Remove oil drops from quick-coup-lers (from male and female) by textilematerial after disconnecting or con-necting hydraulic circuit.

PREVENTIVE DAILY SERVICE

49. Do this service every day or at leastevery 10 hours.

SAFETY CAB

50. If corrosion or accident damages theframe of safety cab it is necessary toexchange the cab.

AIRCONDITIONING

51. In any case do not disassemble, turnor manipulate with fittings of AC system.This might create a sudden escape offluid and local freeze. This could create

a serious damage of tissue whentouching or when frozen in hands.



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Do this service every day or at least every 10 hours

F 7



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F 8 F 9 F 10

FUEL SYSTEM LEAKAGE

Inspect the fuel system for leakage in-cluding the fuel tank. Repair immediatelyany leaks.

ENGINE OIL LEVEL

Check the engine oil and inspect thelubrication system for leakage. Add theoil to prescribed level.

COOLING SYSTEM

Inspect the engine cooling system forleaks. Check the coolant level in theexpansion tank. Add the coolant to"MAX“ level. The minimum allowed levelis on the lower mark.



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F 11 F 12 F 13

FLUID SERVICE BRAKES

Inspect the brake and clutch circuit forleaks and check the brake fluid level inthe brake fluid expansion reservoir.

AIR TRAILER BRAKES

Inspect the air brake system leak andtractor break efficiency with trailer (see„inspection of air brake leak “).

HYDRAULIC TRAILER BRAKES

Inspect the hydraulic brake system leak.



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F 14 F 15 F 16

STEERING

Check oil level in the hydrostatic steeringoil tank. Retighten bolts and nuts ofsteering tie-rods and arms.

TIRES AND WHEELS

Check the inflation air pressure of frontand rear tires. Inflate them up to therecommended pressure according tooperating conditions. Check, eventuallyretighten bolts of front and rear wheels.Never drive tractor with loosened bolts ofwheels.

AIR CLEANER

The indicator indicates clogging of theair cleaner, this indicator switches thelamp on the dashboard in case of strongclogging.



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F 17 F 18 F 19

CAB FILTRATION

Check and eventually clean cab filterslocated under the roof in front part. Filterexchange interval depends upon dust-iness of working condition. The partialregeneration of filters can be done byshaking-out or blowing by press air.Filters are accessible after removing ofgrills located in front of cab roof.

HITCHES

Check the status of hitches and attach-ments including the trailer.

AFTER OPERATION WITH FRONT

IMPLEMENTSRemove the front mask to be able toblow out impurities outside the tractor.Clean the front part of radiators (radia-tors of transmission, AC condenser) bythe press air, blow it in direction from theengine. Remove the rest of impuritiesunder the bonnet, otherwise their re-peated suction into the cooling systemmight appear.Inspect front three-pointhitch hydraulic circuit for leaks.



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F 20

SHORT FUNCTIONAL TEST

Check the lubrication indicator light is“off“ after starting engine. Check thefunction of charging (charging controllamp must be off). Check the hydrauliccircuit of hydrostatic steering for leaksand its function.



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ACQUAINTANCE WITH TRACTOR

Tractor user must be properlyacquainted with recommendedoperating and safety rules inadvance. It is too late to do itwithin operation!

PageSafety cab ................................................................................................................. 23Opening the door from outside.................................................................................. 23Opening the door from inside .................................................................................... 23Rear window.............................................................................................................. 24Side window .............................................................................................................. 24

∗Tiltable roof lid .........................................................................................................24Opening for implementation purposes ......................................................................25Windshield washer ....................................................................................................25Washer tank.............................................................................................................. 25Washer control .......................................................................................................... 25

∗Passengerřs seat.....................................................................................................26Space for driverřs needs and toolbox ........................................................................26Rearview mirrors .......................................................................................................26Seat adjustment for driverřs weight ........................................................................... 27Longitudinal seat adjustment .................................................................................... 27Vertical seat adjustment ............................................................................................ 27

Driverřs seat ∗ Grammer ........................................................................................... 28Seat adjustment for driverřs weight ........................................................................... 28Longitudinal seat adjustment .................................................................................... 28

Driverřs seat ∗ Cobo..................................................................................................29Seat adjustment for driverřs weight ........................................................................... 29Longitudinal seat adjustment and backrest adjustment ............................................ 29Tiltable steering wheel .............................................................................................. 30Angle adjustment ......................................................................................................30Telescopic adjustment .............................................................................................. 30

Control panel of heating, ∗airconditioning and ∗ radio .............................................. 31Four-speed switch of heating blowers .......................................................................31Control panel on right cab pillar ................................................................................ 31Ventilation outlets and radio speakers ......................................................................32Defrosting the front windshield .................................................................................. 32

∗ Ac control ............................................................................................................... 33Cooling the cab .........................................................................................................33

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∗ Ac operation ........................................................................................................... 33Location of dashboard .............................................................................................. 35Description of instruments ........................................................................................ 35Indicator lights........................................................................................................... 35Location of dashboard .............................................................................................. 37Description of instruments ........................................................................................ 37Indicator lights and push buttons .............................................................................. 37Switches with levers.................................................................................................. 38Light switch (a) .......................................................................................................... 39Front wheel drive switch (d) ...................................................................................... 39Hazard light switch (f) ............................................................................................... 39Switch of grill and cab headlight (g) .......................................................................... 40Switch of rear (front) differential lock (j) .................................................................... 40Turn signal, headlight and horn toggle switch (i) ...................................................... 40Key switch................................................................................................................. 41Key in "0" position ..................................................................................................... 41Key in "I" position ...................................................................................................... 41Key in “II“ position ..................................................................................................... 42Throttle control lever ................................................................................................. 43Stopping device ........................................................................................................ 43Electronic hand throttle control ................................................................................. 43Pedals and levers ..................................................................................................... 44Main gear shifting lever and reversor lever ............................................................... 44Shifting lever of road speed and reduced speed ...................................................... 44PTO selection control lever for shifting of pto independent and ground speed ........ 45

Parking brake lever and ∗ pick up hitch control lever................................................ 45Hydraulic control ....................................................................................................... 45Hand control of selection control valve ..................................................................... 46Fuel tank ................................................................................................................... 46Draining plug of fuel tank .......................................................................................... 46Average fuel consumption in litters per operating hour ............................................. 47Battery switch............................................................................................................ 47Location of information and safety decals ................................................................ 48



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SAFETY CAB

F 21 F 22 F 23

SAFETY CAB

Use steps and handles whengetting out and in.

OPENING THE DOOR FROM OUTSIDE

Cab doors can be locked from outside.

OPENING THE DOOR FROM INSIDE

1. Lever for opening from inside.2. Lever for locking from inside.Door is kept in the opened position witha gas strut.Going with opened door is not recom-mended. Door might be damaged.



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SAFETY CAB

F 24 F 25 F 26

REAR WINDOW

Rear window is equipped with handleand is kept in the open position by gasstruts.

We recommend latching the win-dow in closed position when driv-ing on uneven terrain - danger ofwindow cracking. Before startingthe job with machines implemen-ted in the rear three point hitchbe sure that the interferencebetween hitched implement andopened rear window is avoidedat the maximal lifting of the rearthree point hitch. In case ofinterference we recommend towork with closed window.

SIDE WINDOW

A plastic latch in the opened positionlocks side window.

∗TILTABLE ROOF LID

Pressing the mechanism opens roof lid.Tiltable lid is kept with gas struts in theopened position.

Tractor height is increased whenopened lid. That’s why close thelid when passing through lowprofiles.



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SAFETY CAB

F 27 F 28 F 29

OPENING FOR IMPLEMENTATION

PURPOSES

The bottom window is rigid and isequipped with opening for connection ofcontrols with attached implements.

WINDSHIELD WASHER

The washer nozzle is adjustable byneedle of max. diameter 0,8 mm.

WASHER TANK

Washer tank is accessible after tiltingthe hood or after removing the frontmask.

WASHER CONTROL

The windshield washer sprays afterpressing the switch of front doublespeed wiper. This switch is located onthe right cab pillar. Maximal time of un-interrupted spraying is 20 s.



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SAFETY CAB

F 30 F 31 F 32

∗PASSENGER’S SEAT

Passengerřs seat is tiltable.A - Unlock the seat strut and tilt the

seat.B - Seat is locked in its tilted position on

fender.

SPACE FOR DRIVER’S NEEDS AND

TOOLBOX

The space is located on the left-handside nearby driverřs seat. Toolbox islocated behind the driverřs seat in therear part of cab.

REARVIEW MIRRORS

Adjust rearview mirrors before driving orstarting the job to be able to see theroad or the field.



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DRIVER’S SEAT MARS

F 33 F 34 F 35

SEAT ADJUSTMENT FOR DRIVER’S

WEIGHT

The suspension of seat is adjustable fordriverřs weight from 50 up to 120 kg.Turning of square knob does adjust-ment. Weight indicator is located in theslot of rear seat cover. Spring stroke is120 mm.

Do not adjust the seat on the go.Danger of accident.

LONGITUDINAL SEAT ADJUSTMENT

The seat can be longitudinally adjustedwithin range „ 75 mm (11 positions).

VERTICAL SEAT ADJUSTMENT

The right hand side lever does verticalseat adjustment within range „ 30 mm( 3 positions).



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DRIVER’S SEAT - GRAMMER

F 36 F 37 F 38

DRIVER’S SEAT ∗ GRAMMER

Tractor can be equipped with the seatGrammer as an option.


WEIGHT

Adjust the seat by a plastic knob locatedon the front part of seat support.


Adjust the longitudinal position of seat bya lever located on the left hand side ofthe seat.

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DRIVER’S SEAT - COBO

F 39 F 40 F 41

DRIVER’S SEAT ∗ COBO

Tractor can be equipped with the seatCobo as an option.


WEIGHT

Adjust the seat by rotating the lever afterits tilting into working position.


AND BACKREST ADJUSTMENT

Adjust the seat by lever on the righthand side of seat.Adjust the backrest by rotating a plasticknob located on the right, rear side ofseat.



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CONTROLS

F 42 F 43 F 44

TILTABLE STEERING WHEEL

Tiltable steering column enables variableangle and height adjustment of thesteering wheel. Both functions are ope-rated by one lever.

ANGLE ADJUSTMENT

Angle adjustment enables 10 positionswith step 4 + in range: -16 + up u to +24 +

down.

TELESCOPIC ADJUSTMENT

Steering wheel is adjustable within range0 - 80 mm in any angle position.



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CONTROLS

F 45 F 46 F 47

CONTROL PANEL OF HEATING, ∗AIR-

CONDITIONING AND ∗ RADIO

1. Four-speed switch of heating blowers2. Shut off heater and AC recycling

control3. Heater valve control lever- right - heating “on“

- left - heating “off“

4. ∗ switch of air-conditioning

5. ∗ Radio can be assembled into thespace under the heating panel

FOUR-SPEED SWITCH OF HEATING

BLOWERS

a - vertical position - blower is “off“b - first right position - blower low speedc - second right position - blower middle

speedd - third right position - blower high

speed

CONTROL PANEL ON RIGHT CAB

PILLAR

5. Control switch of rear PTO

6. ∗ Control switch of front PTO7. Cab illumination8. Two speed switch of front windshield

wiper and front washer.9. Switch of rear window wiper.

10. ∗ Control switch of three point hitchlifting (for lifting the implement whenturning in the field)



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CONTROLS

F 48 F 49

VENTILATION OUTLETS AND RADIO

SPEAKERS

11. Adjustable outlets of ventilation,

heating and ∗AC12. Radio speakers (only in case of

preparation assembly for ∗radio)

DEFROSTING THE FRONT WINDSHIELD

For fast defrosting of front windshield the “A“ middle outlets needs to be directed tothe front windshield with 45 + angle from vertical position the "B" side outlets directedtowards front corners of cab.After front wind shield defrosting the side outlets can be directed towards doorglasses for their step by step defrosting. After defrosting the outlets should beadjusted that way not to blow the air directly to the driver but to driver řs legs.



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CONTROLS

F 50 F 51 F 52

∗ AC CONTROL

The switch with symbol of flake controlsair-conditioning.It is necessary to create overpressure inthe cab for the proper function of AC.Thatřs why we recommend to shut allwindows, doors and cab roof cover.

COOLING THE CAB

For fast cooling the inner space of cabmove the heating shut off lever (2) intothe left position (i.e. fresh air inlet isclosed). Choose the desired blowerspeed by the four speed blower switch(position 1, 2, 3). Set outlets with desiredangle to avoid direct blowing to personsin the tractor cab (possible injurybecause of intensive cooling of person řsbody).

AC OPERATION

With switched AC and permanentlyclosed heating shut off , lever (2) in leftposition (i.e. fresh air circuit closed) theinner air is breathed out. Persons couldbecome tired. Thatřs why we recom-mend do move the lever (2) into the rightposition (fresh air opened) immediatelyafter cooling down and reduction of theinner temperature to desired level. Thefluent regulation of system is carried outby partial opening of the heating valvewith heating control lever (3).At the same time dry air from AC systembecomes moisture by this way.



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DASHBOARD (analogue)

F 53



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DASHBOARD (analogue)

LOCATION OF DASHBOARD

Analogue dashboard is assembled as astandard equipment at tractors Z 8621, Z8641, Z 9621, Z 9641, Z 10641.

DESCRIPTION OF INSTRUMENTS

A - indicator lightsB - air pressure gaugeC - tachometer with mechanical hour-

counterD - fuel gaugeE - coolant thermometer

INDICATOR LIGHTS

1. High beam light (blue). It lights if highbeam head lights are “ON- .

2. Turn signal indicator light (green).3. Turn signal indicator light (green) -

first trailer4. Turn signal indicator light (green) -

second trailer5. Indicator light of min. air pressure in

braking system (red): it lights if theair pressure of air trailer brakesdrops under a critical margin i.e. 450kPa.

6. Parking brake (red). It is “on“ if thehand brake is set.

7. Charging indicator light (red). This is“on“ after charging failure.

8. Lubrication indicator light (red). It is“on“ if the engine oil pressure dropsbelow 120 to 60 kPa.

9. Air cleaner clogging indicator light is“on“ after air cleaner clogging(yellow).

10. Indicator light of hazard lamp11. Indicator light of critical coolant

temperature (red) is “on“ afterexceeding temperature approx.

above 100 + C (not connected).

12. Indicator light of Hi-Lo (torquemultiplier) (green , 1

st stage)

13. Indicator light of Hi-Lo (torquemultiplier) (green , 2

nd stage)

14. Indicator light indicating critical failu-re in hydrostatic steering (not nocn-nected)

15. Min. fuel level indicator light (oran-ge). It lights if 1/6 to 1/10 of fuel tankcapacity stays at the fuel tank

16. PTO indicator light17. Indicator light indicates wearing of

cardan brake.18. Glowing indicator light (yellow)19. Free20. Free



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DIGITAL DASHBOARD

F 54



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DIGITAL DASHBOARD

LOCATION OF DASHBOARD

Digital dashboard is assembled as astandard equipment on tractors Z 11641and as an option on Z 8621 - Z 10641.

DESCRIPTION OF INSTRUMENTS

A - indicator lightsB - air pressure gaugeC - tachometer with hour-counterD - fuel gaugeE - coolant thermometerF - display

INDICATOR LIGHTS AND PUSHBUTTONS

Location of indicator lights on digitaldashboard is equal to analogue dash-board.

21. Indicator light of immediate travelspeed

22. Indicator light of PTO 1000 RPM23. Indicator light of PTO 540 RPM24. Symbol of immediate travel speed -

km/h25. Symbol of RPM26. symbol of voltage - V27. Symbol of km28. Symbol of battery29. Symbol of traveled distance30. Reset button for resetting the (day)

displayed data.31. Button of battery voltage. Voltage is

displayed (with accuracy 0,1 V) andsimultaneously the indicator lights No26 and 28 are “ON“.

32. Button of traveled distance (withinthe day or from the time of lastresetting). No of kilometers isdisplayed and simultaneously theindicator lights No 27 and 29 are“ON“.

33. Button of immediate travel speed inv km.h

-1, the speed is displayed and

simultaneously the indicator light No21 and 24 is “ON“.

34. Button of PTO 1000 RPM. Speedwith accuracy 10 RPM is displayedand simultaneously the indicatorlights No 22 and 25 are “ON“.

35. Button of PTO 540 RPM is displayedand simultaneously the indicatorlights No 23 and 25 are “ON“.



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CONTROLS

F 55

SWITCHES WITH LEVERS

a - Light switchb - Switch of front grill light and roof

light (low beam)c - Fog light switch (ON - OFF). Functi-

on of fog light is indicated by illumi-nated symbol.

d - Working light switch (ON - OFF).Function of working light is indica tedby illuminated symbol.

e - Warning light switchf - Front wheel drive control switch. En-

gaged front wheel drive axle is in-dicated by switch symbol - - ON- .

g - pluggedh - pluggedi - pluggedj - differential lock (locks) buttonk - stopping device - at tractors Z 8621

- 10641)l - Toggle switch - turn signal, horn,

lights, high and low beam headlightswitch, acoustic horn.



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CONTROLS

F 56 F 57 F 58

LIGHT SWITCH (a)

a - Lights are “OFF“

b - Clearance lights and tail lights ,license plate light and illumination ofinstruments are “ON“

c - All electrical appliances are nocn-nected as in “b“ position. Moreoverlow and high beam lamps are - ON-

according to the position of toggleswitch.

FRONT WHEEL DRIVE SWITCH (d)

Use the front driving axle forincreasing the pulling force whenrear wheels slippage.

a - front driving axle disengagedb - front driving axle engagedFront driving axle is engaged at stoppedtractor (braked tractor, stopped engine).Front driving axle is engaged in thebasic position (indicator lamp “ON- ) andthe switch disengages the axle.

HAZARD LIGHT SWITCH (f)

a - Hazard lights are “off“.b - Hazard lights are “onFlashing of indicator light on thedashboard indicates function of hazardlights.



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CONTROLS

F 59 F 60 F 61

SWITCH OF GRILL AND CAB HEAD-

LIGHT (g)

a - cab roof headlights are “OFF-

b - cab roof headlights are “ON-

The switch controls the headlights in themask grill or in the tractor cab roof.Use the cab roof headlights only if thefront grill headlights are covered byattached implement hitched in the frontthree point hitch. Symbol on the switchindicates that cab roof headlights are“ON- . High beam can light in the grillmask only.

SWITCH OF REAR (FRONT) DIFFE-

RENTIAL LOCK (j)

a - differential lock disengagedb - differential lock engagedDiff lock is engaged by pressing the difflock push button that is returned into theprevious position after loosing.Symbol on the switch indicates that thediff lock is engaged.Differential lock is automaticallydisengaged after pressing brake pedals.At tractors equipped with front drivingaxle with pin lock, this is engagedsimultaneously with the rear diff lock.

TURN SIGNAL, HEADLIGHT AND

HORN TOGGLE SWITCH (i)

a - Turn signal - right.b - Turn signal - left.c - Acoustic horn , press the toggle

switch in axis directiond - High beam light



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KEY SWITCH

F 62 F 63 F 64

KEY SWITCH

Key switch is located on the front part ofsteering wheel support under thedashboard.

KEY IN "0" POSITION

All electrical appliances controlled by thekey switch are disconnected. The keycan be removed.

KEY IN "I" POSITION

All electrical appliances controlled by thekey switch are connected except ofstarter motor. The key is located in thisposition when running the engine.



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KEY SWITCH

F 65

KEY IN “II“ POSITION

Starter motor is connected in this posi-tion. All electrical appliances controlledby the key switch are connected exceptof wipers, washer, blower of cab and AC.The key is turned automatically to “I“position after starting.



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CONTROLS

F 67 F 68 F 69

THROTTLE CONTROL LEVER

A - Max. throttleB - StopOnly at tractors Z 8621 - Z 10641.

STOPPING DEVICE

Pull the stopping device upwards andkeep it in pulled position, the engine willbe immediately stopped.Only at tractors Z 8621 - Z 10641.

ELECTRONIC HAND THROTTLE

CONTROL

The system electronically cont-rols speed of engine and controlsfuel delivery (see chapter ,

Electronic governor). Engine is stoppedby turning the key into “0“ position at thissystem.



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CONTROLS

F 70 F 71 F 72

PEDALS AND LEVERS

1. Travel clutch pedal2. Foot operated service brake pedals

connected by latch3. Foot throttle pedal

MAIN GEAR SHIFTING LEVER AND

REVERSOR LEVER

1. Main shifting lever with push buttonsfor three-stage Hi-Lo (torque multi-plier)

2. Reversor lever

SHIFTING LEVER OF ROAD SPEED

AND REDUCED SPEED

The lever is located on the right handside at driverřs seat.H - road speedsN - neutralL - reduced speeds



45

CONTROLS

F 73 F 74 F 75

PTO SELECTION CONTROL LEVER

FOR SHIFTING OF PTO INDEPEN-

DENT AND GROUND SPEED

Lever is located on the right hand side atdriverřs seat.PTO - Independent PTO speed is

shiftedN - Neutral positionPTOsynchro - PTO ground speed is

shifted (RPM depends upontractor travel speed)

PARKING BRAKE LEVER AND ∗ PICK

UP HITCH CONTROL LEVER

1. Parking brake levera - disbrakedb - braked2. Pick up hitch control levera - transport positionb - pick up hitch is unlocked (lowered)

HYDRAULIC CONTROL

a - mechanical hydraulic controlb - Electro-hydraulicDescription of hydraulic control is men-tioned in chapter , hydraulic equipment.



46


F 76 F 77 F 78

HAND CONTROL OF SELECTION

CONTROL VALVE

At tractors equipped with ∗hydrauliccontrol of pick up hitch, lowering the pickup hitch is controlled by SCV controllever (a) (usually the right hand sideSCV lever or by operatorřs choice).

FUEL TANK

Plastic fuel tank with capacity 180 litersis assembled as a standard.

Do not step on the fuel tank!

DRAINING PLUG OF FUEL TANK

The opening for draining impurities andfuel is located in the bottom part of fueltank.



47


F 79 F 80

AVERAGE FUEL CONSUMPTION IN

LITTERS PER OPERATING HOUR

Tractor type Engine load

100% 80% 50%

Z 8621, 8641 17,99 14,39 10,07

Z 9621, 9641 20,07 16,06 11,24

Z 10641 21,86 17,49 12,24

Z 11641 28,30 22,64 15,84

BATTERY SWITCH

Battery switch is located on the left handside underneath the front part of cab.



48


F 81

LOCATION OF INFORMATION ANDSAFETY DECALS

2. Warning decal - hand

3. Decal 4-speed transmission

5. warning of operating space

6. coefficient of absorption 0,86



49


7. warning of starter motor

8. ECE label

9. EPA label



50

NOTE

PDF byl vytvořen zkušební verzí FinePrint pdfFactory http://www.fineprint.cz


51

ELECTRONIC ENGINE GOVERNOR

All tractors Z 11641 are equippedwith electronic engine governor.

PageSchema of electronic engine control system ............................................................. 52Push button - MAX ....................................................................................................53Push button - MIN .....................................................................................................53Push button - MEM....................................................................................................53Indicator lamp H/O ....................................................................................................54Function of electronic governor ................................................................................. 54Setting the temporary memory .................................................................................. 54Resetting and deleting the temporary memory ......................................................... 55Setting the permanent memory ................................................................................. 55Permanent memory recall - H/O lamp is off .............................................................. 56Permanent memory recall - H/O lamp is on .............................................................. 57Memory reset - return to pedal control ......................................................................571. Setting the entry and exit speed at tillage and enter to memory ........................... 582. Setting the operating speed and enter to temporary memory ............................... 583. Tillage with operating speed temporarily memorised ............................................ 584. Reset of temporary memory and recall of entry and exit speed memory .............. 595. Reset of permanent memory, setting the operating speed and its temporarymemorising................................................................................................................ 596. Tillage with operating speed temporarily memorised ............................................ 591. Setting the PTO speed .......................................................................................... 602. Setting the constant travel speed .......................................................................... 603. PTO speed engagement and setting the PTO speed for 540 or 1000 RPM .........604. Temporary memorising the PTO speed ................................................................ 615. Manoeuvring with tractor and reset of temporary memory ....................................61



52


RPM

SCHEMA OF ELECTRONIC ENGINECONTROL SYSTEM

System consists of the following maincomponents and of wiring harness.

A - Electronic control unit (E.C.U.)B - Hand throttle control ’ the control

has three keypads and LED.C - Potentiometer ’ mechanically linked

with foot throttle pedalD - Engine speed sensorE - Governor ’ control actuator



53


RPM1 RPM2 RPM3

PUSH BUTTON - MAX

Push button (keypad) - max serves forincreasing the engine speed. Enginespeed can be increased by keypad -max. by two ways.1. Pulse pressing the keypad causes

gradual change of engine speed.2. Permanent pressing the keypad

causes the immediate increase ofengine speed. Engine speed is in-creased up to time when you releasethe keypad.

This keypad controls the memory ifcombined with keypad MEM.

PUSH BUTTON - MIN

Push button (keypad) - MIN serves fordecreasing the engine speed. Control ofkeypad MIN is equal to control of keypad

MAX for increasing the engine speed (1,2).This keypad controls the memory ifcombined with keypad MEM.

PUSH BUTTON - MEM

Push button (keypad) - MEM serves forentering, recalling and resetting theengine speed in memory of system. Thiskeypad is used either separately (1) or inconnection with keypads MIN or MAX(2, 3).



54


RPM4 RPM5 RPM6

INDICATOR LAMP H/O

Indicator lamp H/O indicates switching

on or off the function of keypad MEM.Indicator lamp indicates entering , re-calling and resetting the engine speed inmemory of system and moreover it in-dicates limiting the range of enginespeed increase or decrease.

FUNCTION OF ELECTRONIC GOVER-

NOR

1. Setting the temporary memory2. Resetting and deleting the temporary

memory3. Setting the permanent memory4. Permanent memory recall - H/O lamp

is off5. Permanent memory recall - H/O lamp

is on6. Memory reset - return to pedal cont-

rolEngine speed, determined for me-morizing to memory system, can be seteither by throttle control or by footthrottle control (throttle pedal). Enter,recall and reset of memory is possibleon the keyboard of hand throttle control.

SETTING THE TEMPORARY MEMORY

1. Indicator lamp H/O must be off.2. Set the desired engine speed by

hand (keypad MIN or MAX) or footthrottle control, for example 1600RPM.

3. Press the keypad MEM; indicator

lamp H/O turns on.4. Set engine speed 1600 RPM is

memorized.Since this setting, it is not necessary toset the engine speed anymore. You canloose the foot throttle pedal. Enginespeed is maintained in the constant level(for example 1600 RPM) temporarilymemorized, independently upon tractorload.



55


RPM7 RPM8 RPM9

With such way set constant value (forexample 1600 RPM) it is possible to setthe engine speed by means of hand orfoot throttle control and the enteredmemory will not be lost.a - You can increase or decrease the

engine speed by hand throttle cont-rol. Increase or decrease the enginespeed by interrupted pressing ofkeypad MIN or MAX.

b - You can only increase the enginespeed by foot throttle control. Afterloosing the foot throttle pedal theengine speed drops again to thevalue entered in temporary memory(for example 1600 RPM).

RESETTING AND DELETING THE

TEMPORARY MEMORY

1. Indicator lamp H/O is on.

2. Press the keypad MEM.

3. Indicator lamp H/O turns off. Tempo-rary memory is off. It is not possibleto recall it again. In this time the setvalue (for example 1600 RPM) is de-finitively deleted. The same will hap-pen after switching off the key in thekey switch.

SETTING THE PERMANENT MEMORY

1. Indicator lamp H/O must be off.2. Set the desired engine speed by

hand (keypads MIN or MAX) or footthrottle control.

3. Press both keypads MEM and MINor MAX depending if you want toenter into memory minimal ormaximal engine speed.

4. Indicator lamp H/O is on. Since thissetting the engine speed is enteredinto the permanent memory.



56


RPM10 RPM11 RPM12

1. In case the minimal engine speed isbeing entered it is not possible toenter the value higher than 1500RPM. If you will try it the system willautomatically enter 1500 RPM.

2. In case the maximal engine speed isbeing entered it is not possible toenter the value smaller than 1500RPM. If you will try it the system willautomatically enter 1500 RPM.

Two values can be entered intopermanent memory i.e. chosen minimaland maximal engine speed. Thesevalues will be memorized in thepermanent memory even after stoppingthe engine and removing the key fromthe key switch.If you will enter the new minimal andmaximal engine speed into thepermanent memory the previouslyentered values will be deleted andreplaced by new ones i.e. new valuesset by you.

PERMANENT MEMORY RECALL - H/O

LAMP IS OFF

1. Indicator lamp H/O is off.

2. Press the keypad MIN or MAX(depending if you want to recallmaximal or minimal speed entered inmemory) and keep it pressed (longertime than 0,5 sec.).

3. Indicator lamp H/O turns on. Memoryis recalled. Engine will maintain therecalled constant speed.

Engine speed can be set after this actionby:



57


RPM13 RPM14 RPM15

a - by hand throttle control i.e. byinterrupted pressing the keypadsMIN or MAX. After loosening thekeypads, the engine speed will bechanged to engine speed recalledfrom the permanent memory.

b - by foot throttle control (by throttlepedal) and the engine speed can beincreased only. After loosening thekeypads, the engine speed will bechanged to engine speed recalledfrom the permanent memory.

PERMANENT MEMORY RECALL - H/O

LAMP IS ON

1. Indicator lamp H/O is on. Indicatorlamp is on in that case if you havealready recalled minimal or maximalspeed from the permanent memory.Or if the set speed is entered in thetemporary memory.

2. Press the keypad MIN or MAX de-pending on which speed you want toswitch the memory of system andkeep it pressed (longer time than 0,5sec.).

Attention! In case the indicator lampH/O indicated the function of temporarymemory (set speed was entered in thetemporary memory) this engine speedwill be definitively deleted after recall ofvalues from permanent memory.

MEMORY RESET - RETURN TO PE-

DAL CONTROL

1. Indicator lamp H/O is on. Tractorworks with engine speed entered intemporary or permanent memory.

2. Press the keypad MEM.

3. Indicator lamp H/O turns off. Tem-porary or permanent memory isswitched off. Set engine speed intemporary memory is deleted, setengine speeds in permanent memoryare kept.

Now engine speed can be set by footthrottle pedal or hand throttle controlwithout any restriction (by interruptedpressing of keypad MIN or MAX).



58


RPM16

1. SETTING THE ENTRY AND EXIT

SPEED AT TILLAGE AND ENTER TO

MEMORY

1. Indicator lamp H/O is off.2. Set the entry and exit travel speed of

tractor by the keypad MIN or MAX(for example 1600 RPM)

3. Press both keypads MAX and MEM.(the speed is entered into permanentmemory).

4. Indicator lamp H/O is on.

2. SETTING THE OPERATING SPEED

AND ENTER TO TEMPORARY ME-

MORY

1. Turn off the indicator lamp H/O by

keypad MEM.2. Set the operating engine speed by

foot throttle control (foot throttlepedal)

3. Press the keypad MEM. Indicator

lamp H/O turns on. The speed isentered in permanent memory.

3. TILLAGE WITH OPERATING SPEED

TEMPORARILY MEMORISED

Since you entered the operating enginespeed into the temporary memory nocorrection of speed is necessary.System automatically maintains theconstant level of operating engine speedentered in the temporary memoryindependently upon tractor load.



59


RPM16

4. RESET OF TEMPORARY MEMORY

AND RECALL OF ENTRY AND EXIT

SPEED MEMORY

1. Increase engine speed by footthrottle control to avoid sudden drop-ping of speed.


lamp H/O turns off. Temporary me-mory is switched off and enteredvalue is definitively lost.

3. Press and keep (longer than 0,5sec.) the keypad MAX. You will recallthe value entered in permanent me-mory by this way. Now the engineworks in regime of entry and exitspeed.

5. RESET OF PERMANENT MEMORY,

SETTING THE OPERATING SPEED

AND ITS TEMPORARY MEMORISING


lamp H/O turns off. Permanent me-mory is switched off.

2. Again set the operating engine speedby foot throttle control (foot throttlepedal).


lamp H/O turns on. The speed is nowentered into temporary memory.

6. TILLAGE WITH OPERATING SPEED

TEMPORARILY MEMORISED

Activities that are mentioned in point 6are equal to point 3.



60


RPM17

1. SETTING THE PTO SPEED

Choose the PTO speed 540 or 1000RPM by the end of rear PTO shaft.

2. SETTING THE CONSTANT TRAVEL

SPEED

1. Set the engine speed by keypad MIN

or MAX corresponding to desiredtravel speed.

2. Indicator lamp H/O stays off.

3. PTO SPEED ENGAGEMENT AND

SETTING THE PTO SPEED FOR 540

OR 1000 RPM

1. Engage the independent speed ofPTO shaft.

2. Set the engine speed by foot throttlecontrol (foot throttle pedal) cor-responding to desired speed of PTOshaft in range 540 or 1000 RPM.



61


RPM17

4. TEMPORARY MEMORISING THE

PTO SPEED

1. Press the keypad MAX. Indicator

lamp H/O turns on.Since this the set engine speed cor-responding the PTO speed 540 or 1000RPM is entered in the temporary me-mory. System will automatically maintainthe constant speed of PTO inde-pendently upon load of tractor.

5. MANOEUVRING WITH TRACTOR

AND RESET OF TEMPORARY

MEMORY

1. Disengage the PTO shaft whenmanoeuvring the tractor with imple-ment.


lamp H/O turns off.Since this the temporary memory isswitched off and values entered in tem-porary memory are definitively lost. Theengine works with speed correspondingto travel speed set by keypads MIN or

MAX.



62

NOTE



63

OPERATION

Be familiar with shiftingpattern and test all posi-tions of shifting lever atstopped engine before dri-ving the new tractor.Be sure that the technicalstatus of tractor corres-ponds to the safety trafficcondition before driving.

PageBefore starting........................................................................................................... 65Starting the engine equipped with glow plugs ........................................................... 65Starting the engine equipped with electronic thermostart .........................................66If engine doesnřt start................................................................................................ 67Forbidden starts ........................................................................................................67

∗ Coolant heater ........................................................................................................68Starting the engine with coolant heater .....................................................................68Immediately after starting .......................................................................................... 69Preheating the engine ............................................................................................... 69Gear shifting.............................................................................................................. 70Reversor lever ........................................................................................................... 70Shifting the road and reduced speeds ......................................................................70Shifting from lower to higher gear speed ..................................................................71Shifting from higher to lower gear ............................................................................. 71Three stage hi-lo (torque multiplier) .......................................................................... 71Indication of hi-lo function ......................................................................................... 72Hi-lo shiftinng ............................................................................................................ 72Acceleratig the tractor ............................................................................................... 73Driving uphill.............................................................................................................. 74Driving downhill .........................................................................................................74Service brakes .......................................................................................................... 74Front drum brakes .....................................................................................................75

∗ Front cardan brake .................................................................................................75Air trailer brakes ........................................................................................................75Warning device of air pressure drop .........................................................................76

∗Single and double hose air brakes .......................................................................... 76Air tanks .................................................................................................................... 76Single hose air trailer brakes..................................................................................... 77Double hose air trailer brakes ................................................................................... 77Hydraulic trailer brakes ............................................................................................. 78Control of front driving axle ....................................................................................... 79Driving with engaged front driving axle .....................................................................79



64

OPERATIONPage

Free space round cardan shaft ................................................................................. 79Stopping the tractor - parking brake.......................................................................... 80Stopping the engine .................................................................................................. 80Leaving the tractor .................................................................................................... 80



65

OPERATION

F 82 F 83 F 84

BEFORE STARTING

Before starting the engine besure that1. the tractor is braked by

parking brake.2. main shifting lever and rever-

sor lever is in neutral position.If the shifting lever is in a dif-ferent then neutral position trac-tor can not be started - safety in-terlock switch is not actuated.

STARTING THE ENGINE EQUIPPED

WITH GLOW PLUGS

Tractors Z 8621 - 10641 are equippedwith glow plugs as a standard.1. Insert the key into the key switch

("0" position).2. Depress the clutch pedal.3. Move the main shifting lever and

reversor lever into neutral.4. Set the increased throttle control

(approx. 3/4 maximal delivery).5. Turn the key into "I" position. Yellow

indication lamp on the dashboard is“ON“. The indication lamp indicatescorrect function of glowing.

In case the indication lamp isflashing the glowing systemfailed. In spite of this, the engine

can be started but without function of

glow plugs. Let repair the indicatedfailure in a specialized workshop.6. Wait until the indication lamp is off.7. Turn the key into "II" position (start).8. Release the key immediately after

starting the engine. Do not start lon-ger then 15 sec.

9. After starting the engine, reducegradually the fuel delivery. Avoidrunning the engine at high speed.

Note: According to the personalexperiences of driver it is possible tostart sooner then glow indicating lamp isoff. Proceed similarly when starting thehot engine.



66

OPERATION

F 85 F 86 F 87

STARTING THE ENGINE EQUIPPED

WITH ELECTRONIC THERMOSTART

Tractors Z 11641 are equippedwith electronic thermostart as astandard.

Thermostart enables starting the engineat lower temperatures. Time of glowingand the process of fuel ignition in suctionmanifold is controlled automatically.Note: Before proper starting we recom-mend to prime the fuel system by se-veral strokes of fuel delivery pump.

1. Insert the key into the key switch("0" position).

2. Depress the clutch pedal.3. Move the main shifting lever and

reversor lever into neutral.4. Turn the key through "I" position into

"II" position and (start) crank theengine only (when “hot starts„ thispoint can be eliminated).

5. Turn the key into "I" position. Yellowindication lamp on the dashboard is“ON“. The indicator lamp indicatescorrect function of thermostartglowing (when higher ambient tem-peratures the thermostart function isnot initiated).

6. Wait until the indication lamp is off.7. Turn the key into "II" position (start).

8. Release the key immediately afterstarting the engine. Do not startlonger time then 10 sec.

9. After starting the engine, avoid run-ning the engine at high speed.



67

OPERATION

F 88 F 89

IF ENGINE DOESN’T START

Wait 30 seconds. Turn the key into po-sition "0" and repeat starting.

Never help to the stoppingengine by starter motor. You willavoid damage of starter motor.Never start longer than 10 sec. attractors Z 11641. Start needs tobe repeated.

FORBIDDEN STARTS

It is forbidden to start thetractor by short circuit ofstarter motor connectors.Start from the driver’s seatonly.Disconnect the ground batterypole, shift all levers into neutralposition, including PTO engage-ment, when any manipulationwith starter or repairing it. Acover protects starter motor con-nectors.



68

OPERATION

F 90 F 91

∗ COOLANT HEATER

Coolant heater is assembled into engineblock as an option. At tractors Z 8621 -Z 10641output of heater is 1000 W withvoltage 220 V of alternating electricalcurrent.

At tractors Z 11641 output ofheater is 500 W with voltage 220V of alternating electrical current

STARTING THE ENGINE WITH COOLANT HEATER

Heater enables starting the engine at low ambient temperature by preheating thecoolant. The electrical installation and its protection against electrical shock hazardmust be done according to the proper regulations1. Plug the heater first.2. Plug the cable with heater into 220 V electricity after.With regard to reduction of engine wear when starting at low temperatures, producerrecommends to use heater. The time of preheating depends upon the ambienttemperature (1 to 2 hours are sufficient before supposed starting).

After heating, unplug the electricity first and the heater after.

ELECTRICAL SHOCK HAZARD!



69

OPERATION

F 92 F 93

IMMEDIATELY AFTER STARTING

After starting set the enginespeed to 800 up to 1000 RPMand let the engine idle for 3minutes without load.

In this time check for proper lubrication,charging (indicator lights must be “off“)and other functions assuring the correctengine operation. Time of engine idlewithout load must be kept especially inwinter season.

PREHEATING THE ENGINE

Continue with farther preheating the engine already while driving. Warmingup the engine by long idle run or fast increase of speed is dangerous for theengine.Do not exceed engine speed above 2 000 RPM until the coolant temperaturereaches 45°C.



70

OPERATION

F 94 F 95 F 96

GEAR SHIFTING

Tractors are equipped with four speedsynchronized gearbox, three stagepower shift - Hi-Lo (torque multiplier)reversor, and two stage reduction gear.Four-speed gearbox is shifted by themain shifting lever with grip push buttonsintended for Hi-Lo control (1). Forwardand reverse speed is shifted by reversorlever (2).

The fourth speed can not beshifted when shifted reversespeed (it is blocked).

REVERSOR LEVER

You select the tractor direction byreversor shifting lever (forward, reverse).F - Forward speed (24 speeds)

A - Neutral

R - reverse speed (18 speeds)

There are 18 reverse gears available atreversible gearbox, the reverse speedsare approximately so fast as forwardspeeds. Thatřs why take this well intoconsideration and choose the suitablereverse speed for the given character ofthe operation.

Shift the reversor with depressedclutch pedal and with stoppedtractor.Shift the reverse lever into po-sition R

SHIFTING THE ROAD AND REDUCED

SPEEDS

H - Road speeds

N - neutral

L - Reduced speeds

Gear shifting of reduced speeds is thesame as shifting of road speeds.

Shifting lever of road - reducedspeeds can be shifted at stoppedtractor only.



71

OPERATION

F 97 F 98 F 99

SHIFTING FROM LOWER TO HIGHER

GEAR SPEED

Depress the clutch pedal (clutchdisengaged). In the same time loosenthe throttle pedal and shift the properhigher gear speed. Fluently release theclutch pedal (the clutch starts engaging)and simultaneously increase enginespeed.

SHIFTING FROM HIGHER TO LOWER

GEAR

Depress the clutch pedal and shift theshifting lever through neutral position tolower gear speed.Note: So-called double clutching can beused for increasing the life ofsynchronizers when shifting from higherto lower gears.

THREE STAGE HI-LO (TORQUE MUL-

TIPLIER)

Three stage Hi-Lo is a standardequipment of all tractor types.The particular stage of Hi-Lo is shiftedby means of two push buttons locatedon the shifting lever grip.Shifting is done without depressing thetravel clutch (power shift).The shifting alone is automatic evenunder the load of tractor.

H gear ratio 1,00 (Hi)

M gear ratio 1,16 (middle)

L gear ratio 1,34 (Lo)



72

OPERATION

F 100 F 101 F 102

INDICATION OF HI-LO FUNCTION

The particular shifted stages of Hi-Lo(H,M,L) are indicated by indicator lampswith symbols of turtles.H Lamps with symbols are off

M One lamp with turtle symbol is on

L Two lamps with turtle symbol areon

Note: The stage � is automaticallyshifted when starting or stopping thetractor.

HI-LO SHIFTINNG

H Travel speed increased

L Travel speed decreased

2xH Travel speed increased by twostages

2xL Travel speed decreased by twostages

Note: Description of push buttons + right,left“ is taken in forward direction oftractor travel.



73

OPERATION

F 103

ACCELERATIG THE TRACTOR

1. Select road or reduced gear.2. Depress the clutch pedal.3. Shift the main shifting lever and

reversor lever into neutral.4. Start the engine.5. Set the engine speed to 750 up to

800 RPM.6. Shift the reversor lever into the

desired direction of tractor movement(forward or reverse).

7. Shift the proper gear speed suitablefor starting the movement

8. Slightly increase the engine speed.9. Prepare the parking brake for re-

leasing.10. Release the clutch pedal up to point

where the tractor starts to move andsimultaneously with engine speed

increasing, continue with smoothreleasing the clutch.

11. Fully release the parking brake.12. Accelerate smoothly and slowly.Fast acceleration can cause theoverload of transmission, increased fuelconsumption, excessive tire wear anddamage of the transported load.Use the 1

st gear only for accelerating

when driving with heavy trailer uphill andin heavy terrain.



74

OPERATION

F 104 F 105 F 106

DRIVING UPHILL

Shift from higher to lower speedin time when going uphill, toavoid dropping the engine speedbelow 800 RPM and stopping theengine by overloading.

DRIVING DOWNHILL

Driving downhill without the shif-ted gear is forbidden. If drivingdown the long hill, shift so lowgear the sharper one the hill is. Ifpossible shift the lower gearbefore driving downhill.

Remember: The gear you use reliablyfor driving uphill is safely suitable fordriving downhill.

SERVICE BRAKES

Service brakes are of disc wet type,hydraulically actuated with double pedal,and automatic pressure compensator.

Both brake pedals must belatched together when driving onthe road.Use unlatched pedals only forbraking right or left wheelseparately when working interrain and fields.



75

OPERATION

F 107 F 108 F 109

FRONT DRUM BRAKES

Front drum brakes are assembled ontractors with front non-driven axleZ 8621, Z 9621 as an option.

Front brake is not in functionwhen braking with one pedalonly.

∗ FRONT CARDAN BRAKE

Front cardan brake is assembled ontractors with front driving axle as anoption.Front cardan brake is assembled as astandard on 4WD tractors with trans-mission for 40 km/h.

Moreover there is a cardan brakeamplifier as standard equipmentat tractors Z 11641.

Front cardan brake is not infunction when braking with onepedal only.

AIR TRAILER BRAKES

The control of air trailer brake issynchronized with tractor brake controlincluding the brake effect.Operating pressure is set by a pressurevalve (regulator) adjusted to 740 , 20kPa. If the pressure drops under 550 -

40 kPa the priority valve disconnectspneumatic circuits of secondary ap-pliances: differential lock control, frontwheel drive control, three point hitchpneumatic control, Hi-Lo (torque multi-plier), PTO control.



76

OPERATION

F 110 F 111 F 111a

WARNING DEVICE OF AIR PRES-

SURE DROP

Dropping of air pressure under criticalmargin 450 kPa is indicated by redindicator lamp located on the dashboard.

Tractor with a braked trailer cannot continue in driving when airpressure drops under the criticalmargin and until the pressure isincreased

∗SINGLE AND DOUBLE HOSE AIR

BRAKES

I - Coupling of single hose air brakesystem.

II - Couplings of double hose air brakesystem.

Couplings must be covered by acap if the trailer is not hitched.

AIR TANKS

Tractors are equipped with an air tank ofcapacity 12 l as a standard. The air tankis located on the right side of tractor infront of the rear axle.When the tractor is equipped with airtrailer brakes an extra air tank of ca-pacity 12 l is assembled on the left handside of tractor in front of the rear axle asa standard.

Both air tanks are assembled ontractors Z 11641 as a standard



77

OPERATION

F 112 F 113

SINGLE HOSE AIR TRAILER BRAKES

Operating pressure is set by a pressurevalve (regulator) adjusted to 600 , 20kPa. Capacity of both air tanks is 24 l.

The allowed speed of tractorequipped with single hose airtrailer brakes and with hitchedtrailer is max. 25 km/h.

DOUBLE HOSE AIR TRAILER

BRAKES

Operating pressure is set to 740 , 20kPa Capacity of air tanks is 24 l. Leftcoupling cover is yellow, right couplingcover is red.

The allowed speed of tractorequipped with double hose airtrailer brakes and with hitchedtrailer is max. 40 km/h .



78

OPERATION

F 114

HYDRAULIC TRAILER BRAKES

Hydraulic trailer brake control is synchronized with braking the tractor including thebraking effect. Operating pressure is activated by pressure of oil from hydraulicpump (1). The hydraulic valve (2) is introduced in the circuit of hydraulic pump. Thehydraulic pump is of gear type (pump can not be disengaged).The hydraulic trailer brake valve is controlled by the brake fluid pressure activated inmaster brake cylinder depending upon the force on brake pedal. The pressure inbrake coupling (4) must be 12 - 15 MPa at maximal press on the brake pedal. Trailerbrake valve prioritizes the function of brake to control of hydraulic. Do not forget tobleed the trailer brake valve (2) by vent screw (3) when bleeding the service brakes.In case there are hydraulic shocks in hydraulic circuit if applied service brake pedalsit is necessary to bleed the hose (5) coming from brake valve (2) to quick-coupler(4).



79

OPERATION

F 116 F 117 F 117a

CONTROL OF FRONT DRIVING AXLE

Front driving axle is engaged in basicposition (indicator lamp is “ON„). It isdisengaged by a switch on thedashboard.a - Front axle is disengagedb - Front axle is engagedFront driving axle is engaged at stoppedtractor (stopped tractor, stopped engine).

At tractors with pin diff. lock offront driving axle the differentiallock must not be locked whendriving on the road! Danger ofaccident when turning!

DRIVING WITH ENGAGED FRONT

DRIVING AXLE

Use the front driving axle whenslipping the rear wheels and forincreasing the traction force.Driving with engaged front divingaxle on the road and hardsurface causes an excessivewear of front tires.

Permanent engagement of front drivingaxle is possible if a front agriculturemachine or implement is attached to thetractor. This is specified in operator řsmanual of a particular machine.Maximal allowed speed of tractor withsuch attachment is 15 km/h.

FREE SPACE ROUND CARDAN

SHAFT

Ensure the free space minimally10 mm round cardan shaft whenassembling aggregates or at-taching implements. This spacemust be round the whole lengthof cardan shaft within any itsinclinations.If this rule is not fixed, danger oftractor damage or machine ac-cident is possible!



80

OPERATION

F 118 F 119 A 120

STOPPING THE TRACTOR - PARKING

BRAKE

At normal conditions stop the tractorgently and slowly.Shortly before stopping:1. Depress the clutch pedal2. Move the main shifting lever into

neutral3. At each tractor stopping set the

parking brake and so protect thetractor against accidental movement.Indicator lamp located on the dashindicates parking brake setting.

STOPPING THE ENGINE

Engine must be cooled after work withfully loaded tractor.1. First reduce the engine speed to 800

- 1000 RPM before stopping theengine and let it run without loadapproximately for 5 minutes.

2. Move the throttle control lever intoSTOP position.

3. Pull up the stopping device and keepit in pulled position up to stopping theengine.

At tractors Z 11641 with electro-nic governor the engine is stop-ped by turning the key in key

switch into “0“ position.

LEAVING THE TRACTOR

Key can be turned from "I" position into"0" position at stopped tractor only -

indicator lamp of charging must be ON.Tractor must be properly assuredagainst accidental moving when on thehill: braked, with engine “off “, reversegear shifted and with low gear shifted bymain shifting lever Wheels must belocked by blocks.

Remove the key from the keyswitch and lock the cab at cabtractors before leaving.



81

NOTE



82

NOTE



83

TRACTOR RUNNING IN

PageGeneral rules for running in the new tractor within first 100 hours ............................ 84First 10 hours ............................................................................................................ 84After 10 hours............................................................................................................ 85After 10 hours............................................................................................................ 85After 50 hours............................................................................................................ 85After 70 hours............................................................................................................ 86After 70 hours............................................................................................................ 86After 70 hours............................................................................................................ 86After 100 hours.......................................................................................................... 87After 100 hours.......................................................................................................... 87



84

TRACTOR RUNNING IN

F 121 F 122

GENERAL RULES FOR RUNNING IN

THE NEW TRACTOR WITHIN FIRST

100 HOURS

Within the first 100 operating hours:- load the engine normally- avoid the partial engine load at

operation- avoid the long operation at low idle- frequently inspect the engine oil level

(the increased oil consumption isnormal in this time)

- check the hardware connectionsespecially connections of highlystressed parts of the tractor

- immediately remove all foundproblems. You will avoid subsequentdamage eventually even traffic hazard

- use a similar process also aftergeneral repair of engine.

FIRST 10 HOURS

- run in the tractor at transportoperating

- tighten front and rear wheel nuts byprescribed torque



85

TRACTOR RUNNING IN

F 123 F 124 F 125

AFTER 10 HOURS

We recommend to drain or suck off thepreheated oil from transmission and tofilter it by means of filtration device withfiltration capability 20 ’ m. Transmission is equipped with 5 drainingopenings (1x clutch housing, 1x gearbox,3x differential housing).

AFTER 10 HOURS

Remove and clean the magneticelement (1) and strainer element oftransmission oil suction cleaner (2).Wash both elements in petrol andreassemble after dripping. If necessaryadd the oil up to the upper mark ofdipstick (3). Now you can use thecomplete hydraulic system of tractorwithout restrictions.

AFTER 50 HOURS

At tractors Z 11641 drain the hotrunning in oil from engine andexchange the full-flow engine oil

filter. Fill in the engine with new oil to theprescribed level - upper mark of oildipstick (inspects after engine crankingand oil level stabilizing). It is necessaryto let the engine run few minutes beforerefilling the oil.



86

TRACTOR RUNNING IN

F 126 F 127 F 128

AFTER 70 HOURS

At tractors Z 8621 - 10641drain the hotoil from engine and exchange the full-flow engine oil filter. Fill in the enginewith new oil to the prescribed level(upper mark of oil dipstick - inspect itafter cranking the engine and stabilizingthe oil level). It is necessary to let theengine run few minutes before refillingthe oil.

AFTER 70 HOURS

Check the torque of cylinder head (at thecold engine, by prescribed torque inprescribed sequence of screws). Do checking, adjustment, head retigh-tening and adjustment of valveclearance in an authorized service.

AFTER 70 HOURS

Remove and clean:- magnetic element of transmission

suction filter (1)- strainer element of transmission oil

suction cleaner (2)

Exchange:- paper element of full-flow fine cleaner

(3)



87

TRACTOR RUNNING IN

F 129 F 130

AFTER 100 HOURS

After running in you can work with thetractor without any restrictions.The operating regime at tractors Z 8621- Z 10641:

recommendedoperating speed 1400 - 2300 RPM

low idle speed 700 - 650 RPM

operating oilpressure

0,2 - 0,5 MPa

oil pressure atlow idle speed min. 0,05 MPa

coolanttemperature 80 - 95“C

AFTER 100 HOURS

After running in you can workwith the tractor without anyrestrictions. The operating regi-me at tractors Z 11641:

maximal speed 2350 RPM

recommendedoperating speed 1400 - 2450 RPM

low idle speed 700 „ 10 RPM

operating oilpressure

0,35 MPa

oil pressure atlow idle speed min. 0,05 MPa

coolanttemperature 80 - 100“C



88

NOTE



89

NOTE



90

NOTE



91

TRANSPORTATION

Before driving be sure that thetractor technical status cor-responds to the safe trafficrequirements. Verify hitching thetrailer and fixing the transportedload if attached trailer or agri-cultural implement. Never leavethe tractor being in move forattaching the trailer yourself.Keep also safety of your as-sistant

StranaFront hook ................................................................................................................. 92Trailer hitch ............................................................................................................... 92Mechanical mouth of trailer hitch .............................................................................. 92Automatic mouth of trailer hitch................................................................................. 93Swinging drawbar......................................................................................................93Pick up hitch combined with drawbar ........................................................................94Exchange of hook for drawbar .................................................................................. 94Drawbar of combined pick up hitch ........................................................................... 94Mechanical unlock of carrier hooks ........................................................................... 95Hydraulic unlock of carrier hooks .............................................................................. 95Drawbar..................................................................................................................... 96Trailer implementation............................................................................................... 96



92

TRANSPORTATION

F 132 F 133 F 134

FRONT HOOK

Front hook is used only for pulling thetractor that is without any attached traileror implements.

Use the pull bar or rope whenreleasing the tractor. Never usechains!Hazard of dead injury when thechain is interrupted!At tractors Z 11641 the fronthook is a part of ballast weightsupport.

Note: When assembled front ballastweight, the pin of front canister weightcan be used for emergency releasing thetractor.

TRAILER HITCH

Trailer hitch is used for attaching thefour-wheel trailers or light two-wheeltrailers. The trailer hitch is height adjust-able in 3 positions by 100 mm. Whenworking with different agricultural machi-nes it is often necessary to adjust, tilt, oreventually remove the hitch with support.

MECHANICAL MOUTH OF TRAILER

HITCH

Hitch pin diameter is 30 mm. Maximalvertical static load is 10 kN.



93

TRANSPORTATION

F 135 F 136

AUTOMATIC MOUTH OF TRAILER

HITCH

For attaching the trailer do the following -pull out the latch (1) and simultaneouslyraise the main hitch pin (3) into its upperposition by means of lever (2). Pinautomatically slides into trailer yoke eyeafter coupling the mouth and yoke. Besure the latch is back in position aftercoupling trailer.Maximal allowed vertical static load is 10kN.

SWINGING DRAWBAR

Swinging drawbar can be set side toside in 5 positions by 80 mm. Drawbar isfixed by the clevis in desired position.The drawbar can be longitudinally set intwo positions - measured from the end ofPTO shaft (350 or 400 mm).Cross bar above the drawbar enables anoperation with implements requiring thefloating position of swinging drawbar(with disassembled clevis)Maximal vertical static load of drawbarclevis is 12 kN.



94

TRANSPORTATION

F 138 F 139 F 140

PICK UP HITCH COMBINED WITH

DRAWBAR

Pick up hitch is intended for coupling thetwo-wheel trailers with yoke corres-ponding to ISO 5692 (the internal yokeeye diameter is 50 mm and eye height is30 mm). Pick up hitch hook is hydra-ulically raised and lowered by means oflength adjustable telescopic links.The allowed vertical static load of hitch is24 kN at tractors Z 8621 - 10641.

The allowed vertical static load ofhitch is 30 kN at tractorsZ 11641.

Pick up hitch is capable for pulling themaximal traction force.

EXCHANGE OF HOOK FOR DRAW-

BAR

The hitch is also equipped with drawbarthat is in the opposite side of hitch hook.Drawbar can have three workingpositions. Change of hitch hook fordrawbar is carried out by lowering thehitch hook carrier into position suitablefor removing pins (a). Afterwards thehitch hook is removed from the carrierand inserted into such position that theswinging drawbar clevis is in front ofcarrier.

DRAWBAR OF COMBINED PICK UP

HITCH

Maximal vertical static load is 12 kN.Drawbar is capable for pulling themaximal traction force of tractor.



95

TRANSPORTATION

F 141 F 142 F 143

MECHANICAL UNLOCK OF CARRIER

HOOKS

Carrier hooks are unlocked by leverlocated on the left hand side of driver ’sseat.a - transport positionb - hook of hitch is unlocked (lowered)1. Lift hydraulic arms into the upper

position (with position control)2. Move the pick up hitch control lever

into position (b) and keep it.3. Lower hydraulic arms into low

position “ release the lever of pick uphitch control within lowering ope-ration “ it comes back into itsprevious position.

4. Attach or disattach the trailer.5. Lift hydraulic arms into upper posi-

tion.

6. Hooks snap under pins; afterwardslower hydraulic arms a little.

7. Telescopic links must not bestretched! Keep the minimal play(x)!

HYDRAULIC UNLOCK OF CARRIER

HOOKS

At tractors equipped with ∗ hydrauliccontrol of pick up hitch the pick up hitchlowering is controlled by selective controlvalve lever (usually right SCV lever oraccording to operator ’s choice).1. Lift hydraulic arms into the upper

position (with position control).2. Apply pressure oil into quick-coupler

where the hydraulic cylinder isconnected. Carrier hooks areunlocked by this way andsubsequently return the lever into itsneutral position.

3. Lower rear three point hitch into itslow position.



96

TRANSPORTATION

F 143a F 144 F 145

4. Apply the back-pressure into hydra-ulic cylinder within lowering opera-tion. Carrier hooks come back intotheir operating position by this way.Than return the lever into neutralposition.

5. Attach or disattach the trailer. 6. Lift hydraulic arms into upper posi-

tion. 7. Hooks snap under pins; 8. Lower hydraulic arms a little. 9. Telescopic links must not be

stretched! Keep the minimal play(x)!

DRAWBAR

Drawbar is height adjustable by thehydraulic lifting system within its holelifting range. Only agricultural imple-ments loading permanently the drawbardownwards can be attached to thedrawbar. Maximal vertical static load is 8kN.

Disassemble the trailer hitch withsupport when working with thedrawbar.

TRAILER IMPLEMENTATION

Tractor must be implemented only withsuitable tractor trailer because tractorservice brakes and air brakes of trailermust match together.Static rear axle load must not exceed themax. allowed axle load of tractor whenimplemented with two wheel trailer.



97

TRANSPORTATION

Type Allowed verticalstatic load

Type Allowed verticalstatic load

10 kN 12 kN

12 kN 5 kN

24 kN

30 kN

Maximal weight of implemented braked trailer must notexceed value mentioned in warning tractor label andvalue mentioned in a technical license of vehicle.Maximal speed of implemented tractor is given bymax. allowed speed of slower vehicle.



98

TRANSPORTATION

Allowed load of pick up hitch at tractors Z 8621, Z 8641, Z 9621, Z 9641, Z 10641, Z 11641. Values are valid for tractor with f rontballast weight according to the table, without ballast weight of rear wheels, at max. allowed load of rear axle

Speed(km/h)

Tire F(kN)

Tractor Type Tractor equipmentBallast weights (pcs) = total weight of ballast weights - kg

16,9-3418,4-3416,9-38

18 Z 8621Z 9621

Weight in front of frame (1+2) = 90 kgUnder-frame weight (1+3) = 120 kg

without ballast weight of rear wheels

8

16,9-3418,4-3416,9-3818,4-38

27Z 8641Z 9641

Z 10641

Under-frame weight (1+3) = 120 kgWeight in front of frame (1+7) = 240 kgwithout ballast weight of rear wheels

18,4-38 28 Z 11641

Under-frame weight (2) = 96 kgFront weight (weight support + 14) = 619 kg


18,4-38 30 Z 11641

Front three point hitch + weight (16) = 456 kgFront PTO


16,9-3418,4-3416,9-38

10 Z 8621

Z 9621



20

30

16,9-3418,4-3416,9-3818,4-38

18Z 8641Z 9641

Z 10641


18,4-38 24 Z 11641





99

TRANSPORTATION

Speed(km/h)

Tire F(kN)

Tractor Type Tractor equipmentBallast weights (pcs) = total weight of Ballast weights - kg

2030

18,4-38 25 Z 11641



16,9-3418,4-3416,9-38

- Z 8621Z 9621



40

16,9-3418,4-3416,9-3818,4-38

18Z 8641Z 9641

Z 10641


18,4-38 24 Z 11641



18,4-38 25 Z 11641



F (kN) - Allowed load of pick up hitch



100

NOTE



101

DRIVING THE AGRICULTURAL MACHINES

Check the speed compatibility ofboth, tractor PTO and drivenshaft of machine before attachingthe machine driven by PTO (540or 1000 RPM). Different PTOspeeds may cause serious da-mage and accidents.

PageOperating with PTO.................................................................................................102Control of front and rear PTO.................................................................................. 102Rear PTO - shifting the independent and ground speed .........................................102Shifting the independent speed of rear PTO ........................................................... 103PTO shaft ends .......................................................................................................103Front PTO - sense of speed .................................................................................... 103PTO shafts - covers ................................................................................................ 104



102


F 146 F 147 F 148

OPERATING WITH PTO

Take care for proper assembly of allcovers and guards when working withPTO. Always reassemble the PTO shaftguard after finishing the work.

Connect and disconnect thecardan shaft of attached machineonly after shifting the lever ofindependent and ground speedinto neutral position - N!Repair or clean the PTO drivenmachine parts only with stoppedengine, disengaged clutch andafter shifting the lever ofindependent and ground speedinto neutral position ’ N!

CONTROL OF FRONT AND REAR PTO

Front and rear PTO clutches are control-led electro-hydraulically.They are controlled by switches on theright cab pillar.P - Switch controls the electro-

magnetic valve of front PTOZ - Switch controls the electro-

magnetic valve of rear PTOBoth PTO shafts (front and rear) arecontrolled after pressing both switches.Function of PTO shafts is indicated bylightening of symbols on switches.

REAR PTO - SHIFTING THE INDEPEN-

DENT AND GROUND SPEED

PTO - PTO independent speed isshifted

N - Neutral positionPTOsynchro - PTO ground speed is

shifted (PTO speeddepends upon the tractorspeed)



103


F 149 F 150 F 151

SHIFTING THE INDEPENDENT SPEED

OF REAR PTO

Independent speed of rear PTO is

shifted by turning of PTO shaft end ∅ 35mm.1. Remove the PTO shaft end cover.2. Release the shim.3. Remove and return the shaft end.4. Slide back the shaft end in the

opposite direction.

PTO SHAFT ENDS

Speed (RPM) Shaft end

540 and 1000standard (A)

540 - 6 splines1000 - 21 splines

standard

540 and 1000standard (B)


option

∗750 and 1000option (A)


∗1000option

Change of speedis not possible ’shaft end is notexchangeable

FRONT PTO - SENSE OF SPEED

Speed (RPM) Shaft end

1000 1000 - 21 splines

At tractors Z 8621 ’ 10641 the sense ofPTO speed is equal to engine speedsense (a).

At tractors Z 11641 two versionsof PTO speed sense arepossible:a - clock wise (equal to engine

speed)

b - ∗ anti clock wise



104


F 151a

PTO SHAFTS - COVERS

1. PTO shaft cover - steel2. PTO shaft cover3. Front PTO shaft cover - ISO4. PTO shaft cover5. PTO shaft cover for trailer hitchAfter finishing the work protect PTOshaft by a cover.



105

NOTE



106

NOTE



107

HYDRAULIC SYSTEM

StranaHydraulic system.....................................................................................................108Hydraulic pump .......................................................................................................108Hydraulic inner circuit .............................................................................................. 108Inner circuit control lever ......................................................................................... 109Control mode selection lever................................................................................... 109Response rate control lever .................................................................................... 110Electro-pneumatic control of hydraulic ....................................................................110Cab control switch ...................................................................................................111Control switch on fender ......................................................................................... 111Use of switches .......................................................................................................111Hydraulic outer circuit.............................................................................................. 112Max. oil capacity supplied from hydraulic outer outlets ........................................... 112Rear outlets of hydraulic outer circuit ......................................................................113Outer circuit control lever ........................................................................................ 114Control of single-acting hydraulic cylinder ............................................................... 114Control of double-acting hydraulic cylinder ............................................................. 115Control of double-acting hydraulic cylinder ............................................................. 115Outlets of front outer circuit ..................................................................................... 115Connection of machines and implements to hydraulic outer circuit ........................ 116Selective control valve ............................................................................................ 117Four-position section ............................................................................................... 118



108

HYDRAULIC SYSTEM

F 152 F 153 F 154

HYDRAULIC SYSTEM

Hydraulic system consists of inner andouter circuit. The hydraulic pump of geartype delivers the pressure oil intosystem.The oil for hydraulic system is used fromcommon oil filling of gearbox anddifferential case.

HYDRAULIC PUMP

The hydraulic pump can not bedisengaged. If the engine runs thehydraulic pump works.Hydraulic pump is available in two sizes:

Pump Type Pump Capacity1. UC 20 60 l/min

2. UC 25 70 l/min

HYDRAULIC INNER CIRCUIT

At tractors Z 8621 - 10641 the hydraulicinner circuit is controlled by the innercircuit control lever (1), control modeselection lever (2) and response ratecontrol lever (3). Adjustable stop (4)maintains the inner circuit control lever inthe selected position (this is not valid fortractors equipped with electro-hydraulic)



109

HYDRAULIC SYSTEM

F 155 F 156

INNER CIRCUIT CONTROL LEVER

Inner circuit control lever controls:a - lifting the implement into transport

position (max. lifting)b - height adjustment of three point

hitch with implements when selectedposition control and height adjust-ment of tillage depth when selecteddraft or mixed control

c - setting so called floating positionwhen working with implement equip-ped with its own supporting wheel.

CONTROL MODE SELECTION LEVER

Lever has three positions marked by P, M, and D:P - Position control - Implement attached in the three point hitch is automatically

maintained in the constant height (position) with regard to the tractor.M - Mix control - is a combination of position and draft control. This is suitable

especially for tilling in soils with various resistance.D - Draft control - Implement attached in the three point hitch is automatically

readjusted depending upon the change of soil resistance.



110

HYDRAULIC SYSTEM

F 157 F 158

RESPONSE RATE CONTROL LEVER

Lever controls the distributor in hydraulicvalve and this divides the flow of oil toinner or outer circuit. The oil flow in innercircuit is the smallest if the lever ismoved into forward horizontal position.Hydraulic response rate is reduced byrestriction of the oil flow when selecteddraft or mix control, for example whentilling in various soil conditions.

ELECTRO-PNEUMATIC CONTROL OF HYDRAULIC

This is an additional control of hydraulic that enables lifting the three-point hitch intoits highest position without changing the position of inner circuit control lever. Thisdevice is controlled either by electrical switch on right cab pillar (1) from driver ’s seator by outer electrical switches on both ends of rear fenders (2) from outside.



111

HYDRAULIC SYSTEM

F 159 F 160 F 161

CAB CONTROL SWITCH

Cab control switch is used for lifting theimplement when turning the tractor in theend of field. Pressing the switch liftsimplement. Implement is lowered intoprevious position destined by innercircuit lever after turning the switch intooff.

CONTROL SWITCH ON FENDER

Control switch on fender makesattaching the implement easy. Driver canhandle movement of three point hitchlower links from outside. The hitch islifted when the switch is pressed. Theimplement is lowered into previousposition destined by inner circuit leverafter releasing the switch.

When the tractor is equippedwitch pick up hitch do not lift therear three point hitch by switcheson fenders up to the highestposition! Danger of damaging thehitch!

USE OF SWITCHES

Operator must stand outside theoperating range of attached im-plement when manipulating withthree-point hitch by means ofelectrical switches to avoidcatching by implement or injury.

For lifting the implement into transportposition you must use the control leverof inner circuit. Move the lever into upperposition. The implement must belowered to ground when stopping thetractor with attached implement (theimplement must not be left in liftedposition).



112

HYDRAULIC SYSTEM

F 162 F 163

HYDRAULIC OUTER CIRCUIT

Hydraulic outer circuit delivers the pres-sure oil into hydraulic implements con-nected to hydraulic outer outlets equip-ped with quick-couplers. Quick-couplersockets “ rear (A) and front (B) haveinner diameter 12,5 mm and they cor-respond to the international standardISO 5675.

MAX. OIL CAPACITY SUPPLIED FROM HYDRAULIC OUTER OUTLETS

Max. 12 litters of oil can be temporarily supplied from outer outlets for fillingthe hydraulic cylinders of attached implements. This is considered withstandard oil level in transmission i.e. up to upper mark of oil dipstick and ifthe tractor does not work in hilly conditions. For increasing the supplied oilcapacity it is possible to add up to 15 l of oil into transmission.When bigger supply of oil the transmission oil level can drop so low that thepump of hydraulic and transmission might draw in the air. In this case notonly the pump and also the Hi-Lo or PTO clutch could be damaged

It is necessary to pay attention when disconnecting and connecting the hydraulicquick-couplers because of residual pressure being in female or eventually male ofquick-couplers. Taking ecology into consideration remove the spilt oil by a textilecloth after any disattaching the quick-couplers.



113

HYDRAULIC SYSTEM

F 163a F 163b F 163c

REAR OUTLETS OF HYDRAULIC

OUTER CIRCUIT

In basic version the outlets of hydraulicouter circuit are equipped with threequick-couplers. Quick-couplers No "1"and No "2" are pressurized. Pressure isin particular quick-coupler dependingupon position of outer circuit controllever. The third quick-coupler No "0" isconnected directly with differential casespace and is intended for turning the oilfrom hydraulic implements (for examplefrom rotary hydro-motors etc.).Location of quick-couplers correspondsto tractor hydraulic equipment withoutSCV.

Location of quick-couplers correspondsto tractor hydraulic equipment with twosection SCV.

Location of quick-couplers correspondsto tractor hydraulic equipment withelectro-hydraulic and with three sectionSCV.



114

HYDRAULIC SYSTEM

F 164 F 165

OUTER CIRCUIT CONTROL LEVER

Control lever has three positions marked on label.a - Pressure is in quick-coupler No "1", quick-coupler No "2" is connected with

return line. Lever is moved into its rear margin position. The lever must bekept in this position otherwise it is automatically turned into neutral position"b".

b - Neutral position (locked). Outlets of quick-couplers No "1" and "2" are closedand the oil is blocked in attached hydraulic implement. The lever isautomatically kept by spring in this position.

c - Floating (free) position. Both outlets of quick-couplers No "1" and "2" areconnected with return line and the oil can freely flow in both directions. Leveris locked by valve ball lock in this position.

d - Pressure in quick-coupler No "2", quick-coupler No "1" is connected withreturn line. Lever is moved into its forward margin position. lever must be keptin this position otherwise it is automatically turned into floating position "c".

CONTROL OF SINGLE-ACTING

HYDRAULIC CYLINDER

Single-acting hydraulic cylinder is everconnected with quick-coupler No "1":

lifting lever is in position "a"(pressure in quick-coupler No "1„)

lifting finished lever is moved toposition "b" - neutral

lowering lever is moved toposition "c" - floating

Loweringfinished

lever is moved toposition "b" “ neutral

Note: Picture F 165 shows location ofquick-couplers in basic configuration andconfiguration with two section SCV.



115

HYDRAULIC SYSTEM

F 166 F 167 F 168

CONTROL OF DOUBLE-ACTING

HYDRAULIC CYLINDER

Double-acting hydraulic cylinder is noc-nected with quick-coupler No "1" and No"2 + :

Movement inone direction

(lever in position "a" “pressure in quick-coupler "1")

Movementfinished

(lever in position "b" “neutral)

Movement inoppositedirection

(lever in position "d" -pressure in quick-coupler "2")

Movementfinished

(lever in position "b" -neutral)

Note: Picture F 166 shows location ofquick-couplers in basic configuration andconfiguration with two section SCV.

CONTROL OF DOUBLE-ACTING

HYDRAULIC CYLINDER

Outer circuit control lever mustbe moved as quickly as possibleover position ’c" (floating po-sition) when working with double-acting hydraulic cylinder).Because both sides of cylinderare connected with the return lineand so the uncontrolled move-ment of piston rod can start.

OUTLETS OF FRONT OUTER CIRCUIT

Front outlets are assembled on panel inthe front right part of tractor. Frontoutlets are assembled together withSCV. They are intended for work withfront attached implements. Marking ofoutlets and their use is the same as atrear ones.A - Tractor is equipped with hydraulic

equipment with SCV.B - Tractor is equipped with electro-

hydraulic and three section SCV.Tractor Z 11641 is equipped withelectro-hydraulic and threesection SCV as a standard.



116

HYDRAULIC SYSTEM

CONNECTION OF MACHINES AND IMPLEMENTS TO HYDRAULIC OUTERCIRCUIT

Connection of machines and implements combined with more partsAgricultural machines that are combined from more parts ( combinators, skids, andharrows), are often equipped with outer frames which are hinged to the middleframe. This configuration needs to control folding of outer frames. These outerframes are folded by independent hydraulic cylinders. For folding, cylinders areconnected with outer circuit of tractor hydraulic. When working with such implementit is necessary to control folding of outer frames by raising the control lever of outercircuit upward. Moving the control lever upward ensures that the pressure oil inquick-coupler "1" lifts frames to vertical (transport) position. Quick-coupler "2" isconnected with drain.

Connection of rotary hydromotorIf the rotary hydromotor is connected with hydraulic outer circuit, the oil return linemust be ever connected with quick-coupler "0".

Connection of reversible hydromotorIf the reversible hydromotor is used the oil lines must be connected with quick-couplers "1" and "2". In this case both lines must be equipped with relief valveswhich will limit the pressure peaks when stopping the machine. The oil return linefrom these valves is connected with quick-coupler "0".



117

HYDRAULIC SYSTEM

F 170 F 171 F 172

SELECTIVE CONTROL VALVE

The SCV is intended for attached agri-cultural machines that need the separatecontrol of two hydraulic equipment. TheSCV is located on the left-hand side oftractor underneath the cab and is equip-ped with four-section valve having afloating position.Selective control valve is either two-section or three-section type.

Control levers of SCV sections (A) arelocated on the right rear fender. Frontoutlets of outer circuit (B) or rear outletsof outer circuit are assembled togetherwith selective control valve (C).

Selective control valve with two sectionsis assembled on tractors with mecha-nical control of hydraulic, each of them iswith four-position version.



118

HYDRAULIC SYSTEM

F 173 F 173a F 173b

Selective control valves with threesections are assembled on tractorsequipped with electro-hydraulic, each ofsection is with four-position version.

FOUR-POSITION SECTION

1 Rear margin positionPressure oil flows to quick-coupler"4" or "6"

2 Middle positionneutral (blocked)

3 Front margin positionPressure oil flows to quick-coupler"3" or "5"

Lever returns automatically tomiddle position.

4 Control lever can be moved forwardthrough position III to position IV byincreased force.Floating position (free). Both quick-couplers "3" and "4" or "5" and "6"are connected with return line.

At two-section SCV the floating positionis in a margin position of control leveropposite to outer circuit of regulationhydraulic.The first (right) section of SCV isequipped with hydraulic lock in pressurepositions.A - At two-section SCV this is a section

controlling quick-couplers + 3 + and+ 4 + .

B - At three-section SCV this is asection controlling quick-couplers + 1 +

and + 2 + .



119

NOTE



120

NOTE



121

ELECTRO-HYDRAULIC

PageSchema of electro-hydraulic, EHR 4 - Bosch.......................................................... 122Location of electro-hydraulic control panel .............................................................. 123Function of control elements ................................................................................... 123Pump capacity.........................................................................................................123Device is switched off .............................................................................................. 124Cancellation of blocking .......................................................................................... 124Fast lowering ........................................................................................................... 125Transportation of implements.................................................................................. 125Stop position ........................................................................................................... 125Limiting the upper position of three point hitch ....................................................... 126Field operation ........................................................................................................126Floating position ......................................................................................................127Use of rear outer control ......................................................................................... 127Buttons of hydraulic rear outer control ....................................................................127



122

ELECTRO-HYDRAULIC

SCHEMA OF ELECTRO-HYDRAULIC,EHR 4 - BOSCH

Hydraulic pump (1) delivers oil into theselective control valve (2) from this intothe regulation distributor (3). Distributorcontrols cylinders of hydraulic arms(4,5). Hydraulic arms are linked withlower lifting links of three point hitch.Agricultural implement attached in thethree point hitch is lifted, lowered or keptin the desired position with regard to thetractor. Electronic control unit (6)receives signals from tensometer pins(7) and (8) by electrical way. Thesesignals are compared with the requiredvalue that is set in the control panel (9).Comparing the required and real valuebrings the regulation deviation that istransferred into regulation distributor (3).This distributor is controlled by means oftwo proportional electro-magnets. Liftingand lowering is independent on the load.

F 174



123

ELECTRO-HYDRAULIC

F 176 F 177

LOCATION OF ELECTRO-HYDRAULIC

CONTROL PANEL

Electro-hydraulic control panel (1) islocated on the upper part of right fender.It replaces the control levers ofmechanical hydraulic regulation (innercircuit). Function of hydraulic outercircuit is secured by three-section SCVcontrolled by three levers located onupper part of fender (2).

FUNCTION OF CONTROL ELEMENTS

1. Lifting control lever has 4 positions:

a - transport, lifting

b - stop position

c - regulation, lowering

d - free place, fast lowering (springsreturns the lever back to positionc).

2. Blocking in transport position.3. Speed of lowering 0...max.4. Setting the desired value of lifting

device.5. Limiting the upper position.6. Regulation sensitivity7. Mixing of regulations. Fluent setting

from draft to position control.8. Optical indication of lifting.9. Optical indication of lowering.

PUMP CAPACITY

Tractor with EHR BOSCH is equippedwith pump UC 20 with maximal delivery60 l/min or UC 25 with maximal delivery70 l/min. Maximal pressure in hydraulicsystem with EHR BOSCH, maintainedby relief valve is 21 MPa.



124

ELECTRO-HYDRAULIC

F 178 F 179 F 180

DEVICE IS SWITCHED OFF

The key of key switch switches off theelectrical system. Electronics is switchedoff and lifting device is blocked.

CANCELLATION OF BLOCKING

After switching on of the electricalsystem by key switch, the lifting device isstill blocked. The lifting device neitherlifts nor lowers. Cancel blocking bymoving the lifting lever (1) into position"a" (short movement is sufficient) whenthe electrical system is switched on andengine is running.

After returning the lever (1) into position"c’ the three point hitch is moved intoposition corresponding to setting theelements.



125

ELECTRO-HYDRAULIC

F 181 F 182 F 183

FAST LOWERING

Lever (1) is in position "d" - free position.You must keep the lever in this position.After releasing, the lever returns intoposition "c" “ regulation where thesystem is in floating position.

TRANSPORTATION OF IMPLEMENTS

Move the lifting lever (1) into position "a"and lock it by lock lever (2).

STOP POSITION

After moving the lever (1) into position"b" - stop position, the movement ofthree point hitch is immediately stopped.



126

ELECTRO-HYDRAULIC

F 184 F 185 F 186

LIMITING THE UPPER POSITION OF

THREE POINT HITCH

The upper position of three point hitch islimited by lever (5). Limiting of upperposition can be realized in the upper halfof three point hitch lift.

FIELD OPERATION

Do actions according to the article’Cancellation of blocking„ and set thedesired position of elements dependingupon character of operation. The controlelement (4) serves for setting the depthof implement. Use the control element(6) for setting the sensitivity of system.Symbol of maximal sensiti-vity

Symbol of minimal sensiti-vity

Use control element (7) for setting theregulation control mode and for controlmode mixing.

Symbol of draft control

Symbol of position control

Action of regulation (lifting and lowering)can be indicated by means of indicatordiodes (8) and (9). When turning thetractor in the end of field, move the lever(1) into position "a". After turning thetractor set again the position ’c„. Regula-tion system returns into the previousoperating position (memory of tillage).Control element (3) serves for setting thedesired speed of lowering. In position "0"the three point hitch does not lower!



127

ELECTRO-HYDRAULIC

F 187 F 188 F 189

FLOATING POSITION

Position of control element (4) undermark "F" and position of control element(7) at symbol serves for the permanentwork with floating position of hydraulic,for example when working with ploughand supporting wheel.

USE OF REAR OUTER CONTROL

Rear outer control serves only for at-taching and disattaching the agriculturalimplements. Symbols for marking of but-tons correspond to the sense of movingthe three-point hitch after pushing but-tons. Movement of three-point hitchtakes only the time when the button ispressed. There is not a limitation of up-per position saved by regulation systemwhen the rear control is used. Lifting is

limited by a mechanical stop (by stop onlift cylinder).

Rear control must not be used inthe upper part of three point hitchmovement.

Each use of rear control causes therepeated blocking of regulation systemand it is necessary to repeat ’Cancel-lation of blocking„ “ see chapter ’Can-cellation of blocking„.

BUTTONS OF HYDRAULIC REAR

OUTER CONTROL

1. lifting2. loweringMovement of three-point hitch takes onlythe time when the control button ispressed. Operator must stand outsidemovement range of attached implementwhen manipulating with three point hitchby buttons to avoid grabing by imple-ment.



128

NOTE



129

NOTE



130

NOTE



131

NOTE



132

NOTE



133

HITCHES

Page(A) rear three point hitch ......................................................................................... 134(b) rear three point hitch with hook ends - cbm ....................................................... 134Safety regulations for working with three point hitch ............................................... 135Attaching machines to three point hitch ..................................................................135Attaching machines to three point hitch with cbm hooks .......................................136Locking the side swing of lower links ......................................................................136Telescopic lower draft links ..................................................................................... 137Top link.................................................................................................................... 138Top link.................................................................................................................... 138Selection of top link position ................................................................................... 138Front three point hitch ............................................................................................. 139Control of front three point hitch .............................................................................. 139Adjusting the back throttle valve ............................................................................. 139Attaching the carried implements, eventually weights of front three point hitch ......140Mechanical lock of front three point hitch ................................................................ 140Driving with agricultural machines attached in front three point hitch ..................... 140Front three point hitch for z 11641 forterra ............................................................. 141Control of front three point hitch .............................................................................. 141Regulating and hydraulic lock of front three point hitch .......................................... 141Setting the throttle valve.......................................................................................... 142Attaching the carried implement .............................................................................. 142Driving with agricultural machines attached in front three point hitch ..................... 142



134

HITCHES

(A) REAR THREE POINT HITCH

Rear three point hitch is intended forattaching the carried or semi-carriedagricultural machines and implementswith hitch points of category II accordingto ISO regulation. The center distance oflower link joint balls is 870 mm. Theinner opening of lower link ball is 28,5mm. The inner opening of top link ball is25,5 mm.1. Top link2. Left lift link3. Right lift link4. Lower draft links

(B) REAR THREE POINT HITCH WITH

HOOK ENDS - CBM

Reinforced three point hitch CBMwith hook shaped ends isassembled as a standard on

tractors Z 11641. Hitch is intended forattaching the carried or semi-carriedagricultural machines and implementswith hitch points of category II accordingto ISO regulation. Diameter of lower pinsis 28,5 mm. Diameter of top link pin is25,5 mm.5. Top link6. Left lift link7. Right lift link8. Lower draft links9. Movable collar with handles

F 191



135

HITCHES

F 192 F 193

SAFETY REGULATIONS FOR

WORKING WITH THREE POINT HITCH

Non authorized persons who arenot charged to handle withimplements attached to tractormust not be left between tractorand attached implement - (A). Donot park the tractor with imple-ment in lifted position - (B).

ATTACHING MACHINES TO THREE POINT HITCH

The left lift link (1) is intended for course vertical adjustment of lower link positionand is adjustable after disconnecting its upper end from lift arm pin. Fine adjustmentis carried out by turning the tube of right lift link (2) with handle. Lower link ends canbe mutually vertically adjusted within range 200 mm. Floating (free) position ofimplement and swinging round the axis is enabled after moving the pin (3) into thelower opening (4). In this case the lower draft link ends can be freely verticallymoved by 100 mm one to each other. Lower link stabilizers (5) serve for limiting theside to side swing of lower links. The side swing of lower links can be max. 100 mmto each side from middle position when connected the implement of category II (125mm at reinforced three point hitch). The side swing can be limited by locking ofstabilizers.



136

HITCHES

F 194 F 195

ATTACHING MACHINES TO THREE POINT HITCH WITH CBM HOOKS

Lower and upper links of hitch are equipped with semi-automatic ends -CBM.They serve for easy, two-phase attaching and disattaching the implement tothe three point hitch without necessary direct action of the driver. They are

operated by means of cables from the driver ’s place. Lower links are attached to theimplement within the first phase at reverse move and by subsequent lifting the threepoint hitch. Top link of three point hitch is attached by the driver from the cab withinthe second phase. The top link is assembled in one from four openings of thesupport. First the implement must be equipped with attaching balls-CBM and thelength of hitch axis must be adjusted with adjustable spacer (at reinforced three pointhitch only).At tractors equipped with reinforced three point hitch “ CBM, the fine adjustment iscarried out by moveable collar with handles.

The collar of lift link must be ever set with handles in direction of driving afteradjusting the length.

LOCKING THE SIDE SWING OF

LOWER LINKS

Insert the pin (1) into opening II(implement of category II) or intoopening I (implement of category I).Hitch is set in the middle position. Fineadjustment of hitch can be done bymeans of bolt (2). Blocking the sideswing of links is done when transportingthe implement or when working withmachines which need precise towingbehind the tractor.At reinforced three point hitch thestabilizers can be adjusted within theirwhole range by rotating the collar.



137

HITCHES

„F 196 F 197

Both stabilizers must always be assembled on the tractor. Both must be setby the same way with the same position of pins either both blocked or bothunblocked. Do not adjust the rear wheel tread less than 1500 mm whenworking with implement of category II that needs the side swing (for exampleplough), avoid collision of lower links with tires. Lower draft links have to beconnected by springs and the top link hooked in the spring holder whentransporting without implement.

TELESCOPIC LOWER DRAFT LINKS

Telescopic lower links make attachingthe implement easy. Telescopic draft linkends (2) are loosened after pushing thelatches (1) down. Slipped out draft linkends are fitted onto both pins ofimplement and are locked by quick lockpins (3). Pins are located in holder ontelescopic link - (A). Draft link ends areslid into draft links after reversemovement and are automatically lockedin working position - (B).



138

HITCHES

F 198 F 199 F 199a

TOP LINK

Top link (1) is length adjustable withinrange 270 mm. This is attached to thetractor into one from four openings ofsupport (2), that transfers impulses(senses) from attached implement to thetorsion shaft located in hydraulic rock-shaft.Tractor equipped with electro-hydraulichas the rigid bracket (A) with twoopenings only.

TOP LINK

Pay attention to keep the samelength of joints screwed out fromthe link tube when prolonging thetop link.

SELECTION OF TOP LINK POSITION

Attachment of top link into one fromopenings 1 - 4 influences the following:- sensitivity of hydraulic response

(control mode selection lever inposition "D" or " M"). The biggest re-sponse sensitivity is with top link inthe opening "1".

- tilting the agricultural Implement whenbeing in lifted position with regard tothe height of implement frame (460mm - 610 mm). The smallest tilting iswith top link in the opening "1".



139

HITCHES

F 200 F 201 F 202

FRONT THREE POINT HITCH

Front three point hitch is intended forattaching the front carried agriculturalmachines and implements of category IIaccording to ISO standard. It is as-sembled on tractors with front drivingaxle.Maximal lifting force of front three pointhitch is 12 kN

Within the implement trans-portation the front three pointhitch must always be locked me-chanically in lifted position.

Note: This mechanical lock is recom-mended even in case that no implementis attached in the three point hitch

CONTROL OF FRONT THREE POINT

HITCH

Front three point hitch is equipped withtwo single-acting cylinders that are cont-rolled by oil from hydraulic outer circuit(quick-coupler "1"). Lifting and loweringis controlled by lever of outer circuit (1)“ lever position "a, b, c".

Do not use the lever position "d"when working with front threepoint!

Lowering speed of hitch with implementcan be controlled by back throttle valve(2).

ADJUSTING THE BACK THROTTLE

VALVE

Adjusting the throttle valve is recom-mended before starting the operationwith attached implement in front threepoint hitch that way the time needed forimplement lowering from the upperposition is 1 to 1,5 second. Turning thevalve body into left (in arrow direction)increases lowering speed.



140

HITCHES

F 203 F 204 F 205

ATTACHING THE CARRIED IMPLE-

MENTS, EVENTUALLY WEIGHTS OF


The implement is attached into the frontthree point hitch forks and is locked bypins.A - pins in upper position “ swing of

implement is assured ± 8 +

B - pins in lower position “ whentransporting in hilly terrain or on theroad, eventually with attachedballast weights. Vertical position ofpins locks the pins. Pins can beremoved after turning by 90

o to

horizontal position.

MECHANICAL LOCK OF FRONT

THREE POINT HITCH

Mechanical lock of front three point hitchis carried out by means of lock pins (1)and double opening support welded onlower links (2). Front three point hitch islocked in max. upper position. Trans-versal tube of front three point hitchsupport serves for fixing the upper endof implement springs. Springs unload thefront attached agricultural implement.

DRIVING WITH AGRICULTURAL MA-

CHINES ATTACHED IN FRONT THREE

POINT HITCH

Reduce the travel speed of tractor whengoing with agricultural machinesattached in the front three point hitch to20 km/h. We recommend to drive withengaged front driving axle at 4WDtractors which are not equipped withcardan brake.



141

HITCHES

F 206 F 207 F 208


FOR Z 11641 FORTERRA

Front three point hitch is intended forattaching the front carried agriculturalmachines and implements of category IIaccording to ISO standard.Maximal lifting force of front three pointhitch is 24 kN. Only rounded ballastweights can be attached in this type ofthree point hitch.

Within the implement transporta-tion the front three point hitchmust always be locked hydra-

ulically in lifted position; by ball valve.This valve is located on the left-handside of tractor, above the front axle.This hydraulic lock is recommendedeven in case that no implement is at-tached in the three point hitch.

CONTROL OF FRONT THREE

POINT HITCH

Front three point hitch is equipped withtwo double-acting cylinders that arecontrolled by oil from SCV. Lifting andlowering is controlled by lever of SCV(1):- moving into position 4 makes lifting- moving into position 3 makes

lowering- position F serves for floating position- position N serves for locking the hitch

REGULATING AND HYDRAU-

LIC LOCK OF FRONT THREE

POINT HITCH

The throttle valve can regulate loweringspeed of the hitch with implement. Hydraulic lock of front three point hitch iscarried out by ball valve in any positionof hitch. Ball valve is turned from po-sition A by 90 + (perpendicularly to valveaxis) to position B.



142

HITCHES

F 209 F 210 F 211

SETTING THE THROTTLE VAL-

VE

Before starting the work with implementattached in front three point hitch it isrecommended to set the throttle valve(3) that way the time needed forimplement lowering from the upper tothe lowest position is 1 to 1,5 sec..Turning the valve body into left (in arrowdirection) increases the speed oflowering.

ATTACHING THE CARRIED

IMPLEMENT

The implement is attached into the frontthree point hitch forks and is locked bypins. Fixed and floating position isprovided by pins:- fixed position of attached implement

is provided by assembly of pins intoposition 1

- floating position of attached imple-ment is provided by assembly of pinsinto position 2

DRIVING WITH AGRICULTU-

RAL MACHINES ATTACHED IN


Reduce the travel speed of tractor whengoing with agricultural machines at-tached in the front three point hitch tomax. 15 km/h.We recommend removing the lowerlifting arms (1) from supports at tractorequipped with front three point hitch ifnot used for attaching the implement.Front lower links are disassembled afterremoving the safety pins and hitch pins(2).



143

NOTE



144

NOTE



145

WHEEL TREAD SETTING

PageBlocking and unblocking the front axle knees (extensions) ....................................146Setting the front wheel tread at non-driven axle ...................................................... 147Setting the front axle knees (extensions) ................................................................ 147Possible wheel treads at front driving axle of tractors Z 8641, Z 9641, Z 10641 andZ 11641 ................................................................................................................... 148Front wheel toe-in at non-driven axle ......................................................................149Front wheel toe-in at driven axle ............................................................................. 149Front wheel toe-in at front axles (non-driven, driving) ............................................. 150Setting the wheel stops at front driving axle ............................................................ 151Change of rear wheel tread..................................................................................... 152Rear wheel tread setting ......................................................................................... 152



146

CHANGE OF WHEEL TREAD ’ SPRUNG AXLE KNEES (EXTENSIONS)

F 263 F 264

BLOCKING AND UNBLOCKING THE FRONT AXLE KNEES (EXTENSIONS)

Blocking:- Unscrew the plug (1). Safe it for assembling at later unblocking.- Screw down the stop tube (3) with lock washer (4) into the thread hole of spring

bushing (2) instead of plug. Insert the screw M 10x1,25 (5) into the stop tube and screw it down into the nut (6).This nut is inside of rubber spring (7). The spring (8) is out of function by this wayand the knee is blocked. Unblocking the front axle knee is done by the opposite way.After blocking and unblocking the front axle knees check the front wheel toe-in.

Block and unblock the sprungaxle knee in loaded status only(by the own weight of tractor).Kingpin of wheel is shot up bythe force of spring after un-blocking the unloaded axle knee.Disassemble the bushing ofspring only if the sprung kneeneeds to be completely disas-sembled. Because the specialtool must be used for disas-sembling let to do this job in aspecialized workshop.



147

CHANGE OF WHEEL TREAD

F 212 F 213

SETTING THE FRONT WHEEL TREAD

AT NON-DRIVEN AXLE

The front wheel tread can be set to thefollowing values at tractors Z 8621,Z 9621: 1425 mm 1500 mm 1800 mm Front wheel tread setting is provided bysliding out and in the front axle kneeswhen front axle is lifted. Front treads areincreased by 18 mm when front brakesare assembled.

SETTING THE FRONT AXLE KNEES (EXTENSIONS)

First of all fix the tractor against possible movement, lift the axle by lifting jack andsupport it.- Thread out axle knee nuts and remove the screws (1).- Loosen the lock nuts (2) at screws of steering rod bushings and remove screws

(3).- Slide out or in the knees to the required tread, reassemble screws. Tighten axle

knee nuts by torque 130 - 140 Nm.- Secure steering rods by screws and lock nuts in corresponding positions.- First tighten screw (3) by torque 58 - 63 Nm with totally loosened nut up to screw

head and subsequently tighten the lock nut (2) by torque 25 - 28 Nm.- Check for the toe-in of front wheels.



148


POSSIBLE WHEEL TREADS AT FRONT DRIVING AXLE OF TRACTORS Z 8641,Z 9641, Z 10641 AND Z 11641

Tires 12,4-24 13,6-24 12,4-28 14,9-24

Front wheel treads (mm) Rim position

1565∗ 1630∗ - -

1620 - - -

1715 1700 1715∗ 1710∗

1770 1780 1760 1770

1865 1850 1865 1860

1920 1930 1915 1915

2015 2000 2015 2010

∗ - standard tread Recommended treads are highlighted in bolts Tighten nuts of front wheels by torque 270 - 300 Nm.

Changing of rim and disc position setsthe wheel tread.

First of all fix the tractor againstpossible movement, lift the axleby lifting jack and support it.

- Unscrew nuts of bolts connecting thedisc with rim and remove screws withwashers.

- Change the wheel tread by setting therim into the required position.

- Reassemble screws with washersand lock them by nuts. Tighten nutsby torque 270 - 300 Nm.

- Retighten screws to the prescribedlevel after each loosening of rimconnection.

- Retighten connections again to theprescribed torque after driving thedistance 100 m with unloaded tractor.

- Retighten connections after 3 hourswith loaded tractor.



149

SETTING THE FRONT WHEEL TOE-IN

F 214

FRONT WHEEL TOE-IN AT NON-DRIVEN AXLE

Correct toe-in of front wheels is 3 to 9mm at tractor with non-driven axle.Check and eventually adjust the play offront wheel bearings before toe-inchecking. Inflate tires to the prescribedpressure. Front wheel toe-in ismeasured on sides of tires. The toe-in"S" is calculated as a difference ofmeasured values: S = B ’ A (or S = b -a).

FRONT WHEEL TOE-IN AT DRIVEN

AXLE

Correct toe-in of front wheels is 0 up to 2mm at tractor with driving axle. Frontwheel toe-in is measured on front wheelhubs (if assembled wheels the wheeltoe-in can be measured on rims).



150

SETTING THE FRONT WHEEL TOE-IN

F 215

FRONT WHEEL TOE-IN AT FRONT AXLES (NON-DRIVEN, DRIVING)

- Turn the steering wheel between both margin positions so to have a lever ofhydrostatic steering aligned with the longitudinal axis of tractor.

- Loosen lock nuts of steering rod joints- Measure the distance between outer or inner sides of tires in front in the

horizontal plain of wheel axis. Mark the measuring points.- Drive the tractor so that the marked points will be in rear horizontal position

(turned by 180“) and again measure the distance between marked points- Set the steering rods so to receive after setting the following differences

measured in front and rear:- at non-driven axle 3 to 9 mm (A)

- at driving axle 0 to 2 mm (B)- Maximal difference of turns at both steering rods can be 1 turn taking the starting

position into consideration after setting the toe-in.- Screws for setting the tread must be in downward after setting the toe-in.- Surfaces of joins with grease nipples must be parallel at setting.- Tighten the lock nuts of ball joints by torque 122 - 136 Nm .



151

SETTING THE WHEEL STOPS

Without front three point hitch

Without fenders With fenders

Tires Wheel tread(mm)

Right stop A (mm)

Left stop A (mm)

Right stop A (mm)

Left stop A (mm)

12,4- R24 1565 1715 1865

38 28 17

31 21 10

37 32 23

37 31 21

380/70R24 13,6-R24

1630 1700 1850

39 34 23

35 28 17

40 40 31

35 40 29

12,4-28,10PR

1715 1865

29 18

27 18

40 31

40 31

14,9-24 420/70R24

1710 1860

33 22

30 18

41 31

41 32

With front three point hitch

Without fenders With fenders

Tires Wheel tread(mm)

Right stop A (mm)

Left stop A (mm)

Right stop A (mm)

Left stop A (mm)

12,4-R24 1565 1715 1865

50 33 19

47 33 20

50 33 19

47 35 25

380/70R24 13,6-R24

1700 1850

43 28

39 27

43 28

45 34

12,4-28,10PR

1715 1865

41 26

38 28

38 28

45 36

14,9-24 420/70R24

1710 1860

44 29

41 31

44 29

46 36

F 216

SETTING THE WHEEL STOPS AT

FRONT DRIVING AXLE

Set stops at each change of front wheeltread according to the mentioned tablesafter loosening the nut (2) and treadingout or in the screw (1).



152


F 217 F 218

CHANGE OF REAR WHEEL TREAD

On the base of rear tire dimension, therear wheel tread can be set within thefollowing range:

Rear tiredimension

Wheel tread (mm)

18,4-38 480/70R38 520/70R38

1575-1800

16,9-34 16,9-38 18,4-34

1500-1800

The rear wheel tread can be set by 75mm and is done by changing theposition of rim and disc.

REAR WHEEL TREAD SETTING

The rear wheel treads are adjustable by step 75 mm and are set by changing the rimand disc position. Tread setting is done with lifted tractor rear part to enable freeturning of rear wheel.

Don’t forget to block front wheels against movement before lifting.

Tighten all screws connecting the disc and rim by torque 210 - 230 Nm and nuts ofstuds connecting the disc and shaft by torque 400 - 470 Nm after tread setting.- Retighten screws to the prescribed level after each loosening the rim connection.- Retighten connections again to the prescribed torque after driving the distance

100 m with unloaded tractor.- Retighten connections after 3 hours with loaded tractor- After 10 hours again check tightening of disc nuts and rim connections.- Up to operating the first 100 hours check tightening of disc nuts and rim connec-

tions at front and rear wheels frequently (minimally 6-times within first 100 hours).- Farther after each 100 hours recheck tightening of disc nuts and rim connections

at front and rear wheels.



153

NOTE



154

NOTE



155

BALLAST WEIGHTS

Ballast weights are necessary forincrease of axle load, for ensuring thetractor steering-ability or stability (keepmanufacturerřs instructions whenworking with front loader).

PageFront ballast weights ............................................................................................... 156Ballast weights of front three point hitch .................................................................156Rear wheel ballast weights ..................................................................................... 157Bottom ballast weights of tractors z 11641 ............................................................. 157Front ballast weights of tractors z 11641 ................................................................ 157Valve for filling tires with liquid ................................................................................ 158Filling the liquid into tires ......................................................................................... 158Draining the liquid from tires ................................................................................... 159Blocking front wheels .............................................................................................. 159Max. liquid weight depending upon tire size ............................................................ 160



156

BALLAST WEIGHTS

F 219 F 220 F 221

FRONT BALLAST WEIGHTS

Under frame ballast weights (1)

Combination ofweights (PCs)

Weight(kg)

1+3 1x30 + 3x30 120

Ballast weights in front of frame (2)


Weight(kg)

1+2 1x30 + 2x30 90

1+5 1x30 + 5x30 180

1+7 1x30 + 7x30 240

BALLAST WEIGHTS OF FRONT

THREE POINT HITCH

Weights (1)


Weight(kg)

Support+12 Support8+12x21

260

Rounded weight (2)


Weight(kg)

Support +16 Support

8+16x28

456

Ballast weights with support areattached in the front three point hitchlower links These weights are intendedfor assuring of longitudinal stability when

the heavy implement is attached in therear three point hitch.

Only rounded ballast weights canbe assembled in front three pointhitch of tractors Z 11641.



157

BALLAST WEIGHTS

F 222 F 223 F 224

REAR WHEEL BALLAST WEIGHTS

Combinationof weights

(PCs)

Weight(kg)

2+4 2x25 + 4x30 170

2+6 2x25 + 6x30 230

2+10 2x25 + 10x30 350

BOTTOM BALLAST WEIGHTS

OF TRACTORS Z 11641

Bottom ballast weights


Weight(kg)

2 2x34 68

Bottom ballast weights are assembledinto the cavity in front frame castingpiece. They are accessible after disas-sembling the battery holder.

FRONT BALLAST WEIGHTS OF

TRACTORS Z 11641

Front ballast weights


Weight(kg)

Support + 14 Support

45+14x41

619

Front ballast weights of canister type arehanged to support. They are lockedagainst side movement by pin putbetween middle canisters.The other ballast weights are fixed bytwo holders to the middle ones.Note: Front ballast weights with supportcan be used as a front hook foremergency towing of tractor afterinserting the pin.



158

FILLING LIQUID INTO TIRES

F 225 F 226

VALVE FOR FILLING TIRES WITH

LIQUID

All rear wheel tubes are equipped withvalve that enables filling tires with liquidwhen the adapter is used.

Filling of front tires and rear tiresdouble assembly with liquid is notallowed.

FILLING THE LIQUID INTO TIRES

- Unload the tire by lifting the tractor and turn it with the valve upward (A).- Deflate the tube and remove the valve insert.- Thread the adapter for filling the tires with water and slide the water hose over

adapter. Fill the tube with prescribed quantity of liquid. The tank (B) or pressurewater(C) can be used for filling the tire.

- Remove the water hose and adapter.- Thread the valve insert and inflate tire into prescribed inflation pressure (D).- Thread the valve dust cap after inflation.- Fill the second tire by the same way.



159


F 227 F 228

DRAINING THE LIQUID FROM TIRES

- Unload tire by lifting the tractor and turn it with valve upward (A).- Deflate the tube and remove the valve insert. Turn the wheel with valve

downward. Depressure can be created in tire when draining the liquid. That °s why turnsometimes the wheel with the valve upward (B).

- Remove the rest of liquid from tire by means of pressure air after assembly ofadapter for filling the tires with water (C). Blow out the liquid so long until liquidruns from adapter extension tube.

- Remove the adapter for filing the tires with water. Thread the valve insert backand inflate the tire into prescribed inflation pressure (D).

- Thread the valve dust cap after inflation.- Remove liquid from the second tire by the same way.

BLOCKING FRONT WHEELS

Do not forget to block frontwheels against movement beforelifting the rear wheels.



160


MAX. LIQUID WEIGHT DEPENDING UPON TIRE SIZE

Tire size Filling 75%Clear water

(l), (kg)

Solution of calcium chloride

CaCl2 (kg) water (l) Additionalload (kg)

16,9-34 250 108 166 27416,9-38 290 126 192 31818,4-34 330 144 218 362

18,4R-38 385 168 254 422480/70R38 335 146 222 368

18,4-38 385 168 254 422520/70R38 390 170 258 428

Values mentioned in table are for temperature of freeze - 30°C.

Preparation of liquid:

1. Dry calcium chloride CaCl2 is added into water, never the other way!2. Liquid is not dangerous, but it must be handled carefully. Wash the spilt liquid drops with clean water.3. Let the liquid cool down before filling. Keep the prescribed quantity of hydrated lime.4. Liquid must not get into contact with metal parts and with electrical installation. Tube valve is liquid resistant.5. Antifreeze liquid prepared in this consistency must not be used in cooling system.6. Remove the antifreeze as a special waste after draining

Note: Volume of mixture in the tube corresponds to filling up to valve level.Antifreeze can be prepared either by means of calcium chloride CaCl 2 or magnesium chloride MgCl2.

Quantity 0,40 kg CaCl2 per 1 l of water safes tire up to temperature - 30°C (0,3 kg /l safes tire up to temperature - 20°C, 0,2 kg /l

safes tire up to temperature - 15°C).

Quantity 0,55 kg MgCl2 per 1 l of water safes tire up to temperature - 30°C.



161

NOTE



162

NOTE



163

MAINTENANCE INSTRUCTIONS

Driver alone can do almost any work onplanned technical maintenance. If youdonřt have sufficient technical equipmentlet to do more complicated work in theauthorized service

Any work in connection withcleaning, lubrication and adjust-ment of tractor or implementedmachine must be done only afterstopping the engine and theother moving parts, except in-spection of brake and charging.

PageDisassembling the side shield ................................................................................. 165Tilting the hood........................................................................................................165Disassembling the front grill .................................................................................... 165Lubrication schema of turbocharged engine ........................................................... 166Lubrication schema of six cylinder engine .............................................................. 167Inspecting the engine oil level ................................................................................. 168Draining the engine oil ............................................................................................ 168Changing the full-flow cleaner of engine oil ............................................................ 168Filling the engine oil ................................................................................................ 169Changing the fuel cleaner cartridge ........................................................................169Changing the fuel course cleaner ........................................................................... 169Bleeding the fuel system ......................................................................................... 170Maintenance of air cleaner ...................................................................................... 170Regeneration of main air filter element ...................................................................171Changing the safety element .................................................................................. 171Reassembling the elements .................................................................................... 171Position of dust valve .............................................................................................. 172Tightness of cleaner ................................................................................................ 172Changing the cleaner element of hydrostatic steering ............................................ 173Bleeding the hydrostatic steering system ................................................................ 174Changing the hoses of hydrostatic steering ............................................................ 175Changing the coolant .............................................................................................. 176Changing and inspecting the transmission oil ......................................................... 177Draining openings and plugs................................................................................... 177After draining the oil ................................................................................................ 177Lubricating and filling points of front driving axle .................................................... 178Gearbox of front PTO .............................................................................................. 178Filling up the brake fluid .......................................................................................... 179Sprung knees of front axle ...................................................................................... 179Cleaning the heating filters...................................................................................... 180Maintenance of airconditioning ............................................................................... 180Draining the condensed water from air tanks .......................................................... 181Checking the leakage of air system ........................................................................181



164


PageOperating pressure of air brakes ............................................................................ 181Tire maintenance .................................................................................................... 182Inflating the tires ..................................................................................................... 182Recommended tire inflation pressure for front wheels ............................................ 1832wd tractors ............................................................................................................ 183Recommended tire inflation pressure for front wheels ............................................ 1844wd tractors ............................................................................................................ 184Recommended tire inflation pressure for rear tires ................................................. 185Tires for non driven wheels ..................................................................................... 186Tires for driving wheels ........................................................................................... 186Tires for driving wheels ........................................................................................... 186Tractor storage........................................................................................................ 186



165


F 229 F 230 F 231

DISASSEMBLING THE SIDE SHIELD

Right and left side shield can be re-moved from the tractor after unlocking oftwo lock pins (1).

TILTING THE HOOD

1. Remove the left side shield (1)2. Loosen the latch (2) locking the

hood.3. Secure the hood in tilted position by

a strut (3).

DISASSEMBLING THE FRONT GRILL

1. Tilt the hood.2. Unlock two spring pins from pins of

front grill inserted in front crossmember.

3. Loosen the front grill from the bonnet(by pulling forward).

4. After disconnecting the electricalwiring harness the front grill can befully removed from the tractor.



166


F 232

LUBRICATION SCHEMA OF TURBO-CHARGED ENGINE

Lubrication schema is valid for enginesof tractors Z 8621 - Z 10641 Forterraturbo.1. Suction strainer2. Oil pump -GEROTOR3. Reduction valve4. Full-flow oil filter5. Main oil channel6. Pressure switch7. Filler8. Oil dipstick9. Oil draining plug10. Lubrication of compressor11. Lubrication of turbocharger



167


F 233

LUBRICATION SCHEMA OF SIXCYLINDER ENGINE

Lubrication schema is valid forsix cylinder engine of tractorZ 11641 Forterra.

1. Oil pump with reduction valve2. Oil filter3. Main oil channel4. Spraying nozzle for cooling the

piston5. Lubrication outlet6. Oil channel for lubrication of rocker

arms



168


F 234 F 235 F 236

INSPECTING THE ENGINE OIL LEVEL

Daily inspect the oil level before startingthe work. Inspect the oil level with tractorin horizontal position. Remove the oildipstick (1) wipe it with cloth and threadit. The oil must not be under lowerdipstick mark after repeated removingthe dipstick.Add the oil into filler (2) if needed.

DRAINING THE ENGINE OIL

Drain the oil by removing the drainingplug. Drain it immediately after stoppingthe tractor or after preheating the engineto working temperature. Clean thedraining plug before reassembling.Check for the good status of sealingring.

CHANGING THE FULL-FLOW

CLEANER OF ENGINE OIL

The engine oil cleaner is exchangedever when changing the engine oil.Before assembling a new cleaner cleanthe sealing area of cleaner support (2)and cleaner body (1). Coat the rubbersealing by the same oil you will fill intothe engine. Assemble the new cleanerand tighten it by hand. Tighten again theoil cleaner by 3/4 to 1 1/4 turns aftertouching sealing to block. Check thecleaner for leakage after starting theengine.



169


F 237 F 238 F 239

FILLING THE ENGINE OIL

Fill the prescribed quantity of oil into thefiller (1). Start the engine and let it run 2to 3 minutes at 750 to 800 RPM.Inspect the oil level by dipstick (2) afterstopping the engine and stabilizing theengine oil level. Inspect for oil leakage ofoil cleaner, draining plug and otherfittings.

CHANGING THE FUEL CLEANER

CARTRIDGE

Exchange the fuel cleaner cartridge afterreleasing the nut (1) and removing thebowel (2). Check for the proper bowelsealing position at reassembling thecleaned bowel with the new fuel cleanercartridge. Bleed the fuel system.Put the suitable vessel under the enginebefore exchanging the fuel cleanercartridge to ketch dropping fuel from thecleaner.

CHANGING THE FUEL COURSE

CLEANER

Remove the ring nut (1) and the fuelcleaner bowel (2) with sealing andstrainer. Clean the bowl and strainer indiesel fuel. Check the right position ofsealing when reassembling the fuelcleaner bowl, before tightening the ringnut. Bleed the fuel system.



170


F 240 F 241

BLEEDING THE FUEL SYSTEM

Put the suitable vessel under the engine before bleeding to ketch dropping fuel fromthe cleaner and injection pump.Proceed by the following way:- Prime the fuel system by several strokes of hand priming pump (1).- Loosen the screw of fuel cleaner input fitting (2) and let the foam escape.- Retighten the screw (2) and repeat the process until the clean foam-free fuel

fluently leaks after loosening the screw.- Bleed the injection pump by the same way by means of screw located on injection

pump case (3)

MAINTENANCE OF AIR CLEANER

Maintenance of air cleaner must be doneafter indication of clogging by cloggingindicator (the red indicator lamp ondashboard is ON) or minimally once peryear.Maintain the air cleaner after tilting thehood of bonnet.1. Remove the dust reservoir (1) with

dust valve (2) and clean bothproperly

2. Disassemble the main cartridgeelement (3).



171


F 242 F 243 F 244

REGENERATION OF MAIN AIR

FILTER ELEMENT

If the main air filter element is notdamaged (dust on the inner side of airfilter element must not be appeared) doregeneration by pressure air of max.pressure 700 kPa blown from the innerside of element. The main air filterelement can be regenerated maximallythree times by this way. The main airfilter element needs to be replaced onceper year.

CHANGING THE SAFETY ELEMENT

Inner safety air filter element cannot be regenerated.

It must be exchanged in the followingcases:- if the main air filter element is da-

maged- after 5th maintenance of air cleaner- minimally once per two years

REASSEMBLING THE ELEMENTS

Be careful when reassembling the airfilter element to:- keep the contact surfaces clean- air filter elements must not be de-

formed after assembly- neither elements nor paddle wheel

partition must vibrate after as-sembling

- rubber sealing must be fitted properlyround the complete circumference ofdust reservoir.



172


F 245 F 246

POSITION OF DUST VALVE

After assembling the elements close thecleaner by dust reservoir that must beassembled that way the dust valve isdownward.

TIGHTNESS OF CLEANER

After assembling the rubber sealingtighten the nut that way to press thesealing on the curtain by dust reservoirand so safe the tightness of completecleaner.



173


F 247 F 248 F 249

CHANGING THE CLEANER ELEMENT

OF HYDROSTATIC STEERING

1. Remove the tractor front grill.2. Remove the battery.3. Put the suitable vessel under the

hydrostatic steering tank.4. Loosen the draining plug5. Drain the oil from tank.

6. Remove the oil tank cap7. Remove the cleaner element.8. Install the new cleaner element9. Remove both hoses (1, 2)from

steering cylinder and put themtogether with return line hose intovessels for the old oil.

10. Start the engine and turn the steeringwheel twice or three times into bothdirections at low engine idle run(max. 10 seconds) to remove the oilfrom the steering unit.

11. Fix the tractor against movement andlift the front axle.

12. Put a vessel for the old oil under thesteering cylinder and remove the oilfrom cylinder by turning of wheels (byhand).

13. Reassemble all disconnected fittings.14. Fill the tank by oil and bleed the

hydrostatic steering circuit.



174


F 250 F 251

BLEEDING THE HYDROSTATIC STEERING SYSTEM

- Start the engine and let it run for 1 minute at low idle.- Turn the steering wheel several times to both directions (A) at engine low idle run.- At engine max. speed turn the steering wheel three times alternatively slowly and

quickly to both directions up to wheel stops (A).- Stop the engine and lower the front wheels to the ground.- At 2WD tractors loosen the bleeding plug located in the upper cover of steering

cylinder (this is necessary for filling the circuit of hydrostatic steering by fresh oil)and after draining oil tighten the plug. The plug is accessible after sliding out thebattery and battery support (B).

At all actions within bleeding lookat the oil level in tank to avoidaerating of steering system.

After bleeding check and eventually addthe oil into tank up to the mark of oildipstick (C). Check for leakage of allconnections and lines.



175


F 252

CHANGING THE HOSES OF HYDROSTATIC STEERING

Hydrostatic steering hoses must be exchanged after four years from time ofmanufacturing (time is marked on hose surface) or after 3 600 hours of tractoroperation, eventually immediately after founding any symptoms of damage i.e. hosesweating, local bulging, leakage of oil at fittings and on hose surface, mechanicaldamage of hose surface up to steel wire cord or damage of yarn braid at lowpressure hoses).

Steering-ability is kept even in case of hydrostatic steering pump failure or ifthe engine stops but the steering force on the steering wheel is biggerTractor can be driven into the nearest place for repair at reducedtransportation speed. Don’t keep the steering wheel in the stop steering angle positions (max. timeis 20 seconds), otherwise the oil is excessively heated in the hydrostaticsteering circuit.



176


F 253 F 254 F 255

CHANGING THE COOLANT

Keep the following instruction:- Open the valve of heating system (A)

and release the overpressure cap ofexpansion tank (B).

- Drain the coolant from radiator.Draining valve is accessible afterremoving the left side shield.

- Drain the coolant from engine block.Draining valve is accessible afterremoving the right side shield.

- Close both draining valves afterdraining the coolant (let the heatingvalve opened).

- Fill the cooling system with antifreezemixture up to neck of expansion tankand close it by overpressure cap.

- Start the engine and let it runapproximately 1 minute.

- Add the coolant in expansion tank upto mark "MAX".

The minimal possible coolant level isapproximately 40 mm under the sealingedge of filler. Close the expansion tankby overpressure cap.At tractor Z 10641 disassemble thescrew on the additional radiator andcheck the quality of bleeding. Clearliquid must drain from the radiator afterloosening the screw.

Never fill the cooling circuit bywater only! Use of anothercoolant can damage the engine.

At tractors Z 11641 fill thecooling circuit only by

Akros Fluid!This liquid can not be mixedwith water or another anti-freeze!



177


F 256 F 257 F 258

CHANGING AND INSPECTING THE

TRANSMISSION OIL

The oil level is inspected by oil dipsticklocated on the right side of differentialcase.Filling opening for transmission oil islocated on the hydraulic rockshaft. Thisis accessible from the rear of tractor.

DRAINING OPENINGS AND PLUGS

1 - Oil from clutch housing2 - Oil from gearbox3 - Oil from differential case

AFTER DRAINING THE OIL

- Clean magnetic element (1) andstrainer (2).

- Exchange the paper cartridge (3).Tighten the screw of cleaner bowl byhand. Do not use tools.

- Assemble all draining plugs after theircleaning.

- Fill the oil (approximately 40 litters)start the engine and let it runapproximately for 2 minutes.

- Check the level and add the oil up tothe maximum level after stopping theengine and stabilizing the oil level intransmission.



178


F 259 F 260

LUBRICATING AND FILLING POINTS OF FRONT DRIVING AXLE

1. Lubricating nipple of kingpin2. Sliding bearing (2x) of front driving axle3. Filling and checking opening of differential housing4. Draining opening of differential housing5. Filling, checking and draining opening of front wheel final drive

GEARBOX OF FRONT PTO

1. filling opening2. draining opening



179


F 261 F 262

FILLING UP THE BRAKE FLUID

Brake fluid tank is located after tilting thebonnet hood.Maintain the brake fluid level within 3/4(max. level) up to 1/2 (min. level) of tankcapacity.Keep the strict cleanness when mani-pulating with brake fluid. Daily inspectthe brake fluid level before driving.

SPRUNG KNEES OF FRONT AXLE

The sprung knees can be blocked foroperation requiring higher load of frontaxle than allowed for sprung executionor if the constant height of front tractorpart is required.



180


F 265 F 266 F 267

CLEANING THE HEATING FILTERS

Filters are located under grills above thefront windshield from outside of the cab.Regenerate filters by kicking out, or bypressure air blowing through, accordingto the stage of clogging. Daily check forclogging. Exchange the strong cloggedfilters.

Tractors are not equipped withspecial filters of cab intake air.That’s why tractors are not in-tended for operation with aero-sols and other health dangerousmediums.

MAINTENANCE OF AIRCONDI-

TIONING

The most important part ofmaintaining the AC system iscleaning the AC condenser (thisis located in front of engineradiator).The clogged AC condenser re-duces not only the affectivity ofAC system but also the affectivityof engine cooling.

Loosen the wing nuts keeping noc-denser to the upper partition of bonnet.Tilt the condenser and blow it out bypressure air or wash it by pressurewater.

Within the right function of AC the airhumidity is condensed in the roof spaceof cab. Condensed water is drained byhoses in cab pillars and water drains inthe bottom part of pillar. Thatřs why it isnecessary to keep hoses clean forproper draining the condensed water.

Tractors Z 11641 equipped withAC are able to work on full loadup to ambient temperature 36“C

without any restriction.



181


F 268 F 269 F 270

DRAINING THE CONDENSED WATER

FROM AIR TANKS

Drain the condensed water by incliningor pressing the protruded part of valve.Air tanks are located in front of rear axle.At tractors Z 8621 - Z 10641 one air tank

is assembled as a standard or ∗ two airtanks located on left and right hand sideof tractor (in case air brakes areassembled).

At tractor Z 11641 both air tanksare assembled as a standard.

CHECKING THE LEAKAGE OF AIR

SYSTEM

- Fill the air tank to the max. pressure- The pressure must not drop down by

more than 10 kPa after 10 minutes atstopped engine.

Daily inspect the system for leaksbefore operation with trailer. Theindicator lamp on the dashboardis ! on ! when the air brake systemfails or after dropping the pres-sure under 420 kPa.

OPERATING PRESSURE OF AIR

BRAKES

At single and double hose brakes thepressure in double hose coupling (redcover) is 735 „ 20 kPa and the pressurein single hose coupling is max. 600 kPa(in time when the air pressure regulatorreleases the compressor + air blowsout).



182


F 271 F 272

TIRE MAINTENANCE

Regularly check the outer surface oftires and verify that tires are withoutdefects in the side part and that the cordis not damaged.

Discard tires with defects.

INFLATING THE TIRES

Basic values of recommended inflation pressure are mentioned in the followingtables. Regularly check for the inflation pressure before operation. Check theinflation pressure at cold tires. The tractor air pressure regulator can be used for tireinflation. This regulator serves for maintaining the air pressure, filling tires andserves as a safety valve. Remove the wing nut of regulator (or regulator rubber plug)when inflating the tire and assemble a hose for tire inflating instead of it. Screw downthe hose fitting up to the end of thread for pushing the back pressure valve. In casethe maximal pressure 0,6 MPa (or 0,7 MPa at double hose brakes) is in air braketanks the tire can not be inflated. In this case it is necessary to reduce the pressureby valve for draining the condensed water located in the bottom part of air tank. Thewing nut (or rubber plug) must be reassembled on the air pressure regulator after tireinflating.



183


RECOMMENDED TIRE INFLATION PRESSURE FOR FRONT WHEELS

Sum of load capacity for both tires used at front axle must not exceed allowed axle load capacity. Values of allowed axle loadcapacity is mentioned in , main technical parameters , of the particular type of tractor. Tires of different design must not beassembled on the same axle of tractor.

2WD TRACTORS

Tire size and design

Main operatingconditions

7,50-166 PR

7,50-206 PR

9,00-166 PR

10,00-166 PR

12,4-2810 PR

Field operation Inflating pressure(kPa)

230-280 230-280 160-190 170-200 120-170

load capacity (kg) 645-745 755-875 720-810 860-965 1035-1275

Road transportation Inflating pressure(kPa)

230-280 230-300 190-230 180-230 220-280

load capacity (kg) 645-745 755-875 810-900 860-965 1510-1790

Operation with frontloader (8km/h)

Inflating pressure(kPa) 350 350 max.290 250 max.320

load capacity (kg) max.1490 max.1750 max.1350 max.1930 max.2300



184


RECOMMENDED TIRE INFLATION PRESSURE FOR FRONT WHEELS

Sum of load capacity for both tires used at front axle must not exceed allowed axle load capacity. Values of allowed axle loadcapacity is mentioned in , main technical parameters , of the particular type of tractor. Tires of different design must not beassembled on the same axle of tractor

4WD TRACTORS


Main operating con-ditions

12,4-248 PR

12,4R24 13,6R24

Field operation Inflating pressure (kPa) 100-170 130-160 130-160

load capacity (kg) 895-1200 1190-1360 1270-1450

Road transportation Inflating pressure (kPa) 200-250 130-160 130-160

load capacity (kg) 1330-1415 1190-1360 1270-1450

Operation with frontloader (8 km/h)

Inflating pressure (kPa)290 max. 200 max.200

load capacity (kg) max. 2830 max. 2040 max.1910


Main operating con-ditions

14,9R24 380/70R24 420/70R24

Field operation Inflating pressure (kPa) 130-160 130-160 130-160

load capacity (kg) 1490-1700 1445-1650 1665-1900

Road transportation Inflating pressure (kPa) 130-160 190 190

load capacity (kg) 1490-1700 (1445)-1650 (1665)-1900

Operation with frontloader (8 km/h)

Inflating pressure (kPa)max.200 max.200 max.200

load capacity (kg) max.2550 max.2300 max.2300

Note: Tires 380/70R24 can be replaced by tires 13,6R24.Tires 420/70R24 can be replaced by tires 14,9R24.



185


RECOMMENDED TIRE INFLATION PRESSURE FOR REAR TIRES

Sum of load capacity for both tires used at rear axle must not exceed allowed axle load capacity. Values of allowed axle loadcapacity is mentioned in , main technical parameters , of the particular type of tractor. Tires of different design must not beassembled on the same axle of tractor.



16,9-348 PR

16,9R34 18,4-348 PR

18,4R34

Field work Inflating pressure(kPa)

110-150 140-160 110-140 130-160

load capacity (kg) 1830-2200 2130-2430 2250-2565 2450-2800

Roadtransportation

Inflating pressure(kPa)

170-200 130-160 170-200 130-160

load capacity (kg) max. 2380 2130-2430 max. 2565 2450-2800



16,9-38

8 PR

16,9R38 480/70R38 18,4R38 520/70R38

Field work Inflating pressure(kPa)

110-140 130-160 120-160 130-160 110-160

load capacity (kg) 1940-2230 2255-2575 2500-2900 2625-3000 2635-3350

Roadtransportation

Inflating pressure(kPa)

170-200 130-160 140-160 130-160 110-160

load capacity (kg) max. 2520 2255-2575 2700-2900 2625-3000 2635-3350

Note: Tires 480/70R38 can be replaced by tires 16,9R38.Tires 570/70R38 can be replaced by tires 18,4R38.

Inflate front and rear tires to lower mentioned value when working on fields with light soils (dry, sandy soils). Higher mentionedpressure is intended for working in heavy and compact soils. When tilling any deformation of tire side walls must not beappeared at minimal inflating. Load capacities mentioned in tables are valid under supposition that the speed of tractor doesn řtexceed 30 km/h. Mentioned values are considered for one tire. For tractor maximal load of axle mustn řt exceed max loads oftires.



186


When loading the tractor, the allowed axle load capacity of axles must not exceed the allowed load capacity mentioned in , maintechnical parameters , of the particular type of tractor. Change of tire load from the basic value is mentioned in the followingtables.Note: values for inflating tires 100% are mentioned in tables of recommended inflating in article , Main operating activities + forfield operation , .

TIRES FOR NON DRIVEN WHEELS

Front wheels

Speedkm/h

Loadcapacity %

Inflating %

102025303540

150(200*)1351151009080

125100100100100100

* value for front loader only

TIRES FOR DRIVING WHEELS

Wheels - diagonal tire

Speedkm/h

Loadcapacity %

Inflating %

102025303540

140**1201071009080

125100100100100100

** minimal value for 6 PR

It is not allowed to increase the tire loadcapacity by farther increase of inflatingpressure over values mentioned in tableand with reducing the tractor travelspeed except of mentioned cases.

TIRES FOR DRIVING WHEELS

Wheels - radial tire

Speedkm/h

Loadcapacity %

Inflating %

102025303540

150123111107103100

125100100100100100

TRACTOR STORAGE

If the tractor is stored out of operation forshort period, inflate tires to value usedfor road transportation. When storage oftractor for a long period, support thetractor and reduce the tire pressure tominimum (wheels must not touch theground).



187

NOTE



188

NOTE



189

ADJUSTMENT

Almost all these following operationsrequire certain experience, service anddiagnostic equipment. Thatřs why werecommend doing this work at speciali-zed or authorized workshop

PageInspecting the tension of engine belt ......................................................................190Tension of engine belt ............................................................................................. 190Tightening the cylinder heads ................................................................................. 190Adjustment of valve clearance ................................................................................ 191Adjustment of valve clearance ................................................................................ 191Adjustment of injectors ............................................................................................ 191Adjustment of injectors ............................................................................................ 192Adjustment of brake pedal free travel .....................................................................192Bleeding the service brake system ........................................................................193Adjustment of clutch pedal free travel ....................................................................194Bleeding the clutch hydraulic circuit .......................................................................194Bleeding the front cardan brake .............................................................................. 195Bleeding the front drum brake ................................................................................. 195Inspection of service brake ..................................................................................... 196Adjustment of service brake .................................................................................... 196Adjustment of parking brake ................................................................................... 197Changing the brake segments of front cardan brake .............................................. 198Adjusting the free play of front wheel tapered roller bearings at tractors Z 8621,Z 9621 ..................................................................................................................... 198Adjusting the lifting links of pick up hitch ................................................................ 199Adjusting the push-pull cable .................................................................................. 199



190

ADJUSTMENT

F 273 F 274 F 275

INSPECTING THE TENSION OF ENGI-

NE BELT

The correct tension of each belt is as-sured when the belt is deflected 7,5 mmafter pushing on the belt by force 25 N.Adjust the tension of belt to prescribedvalue after loosening the fixing screws(1, 2).

TENSION OF ENGINE BELT

At tractors Z 11641 the correct tension iswhen the belt is deflected 25 mm afterpushing on the belt by force 50 N.

TIGHTENING THE CYLINDER HEADS

Cylinder heads are tightened at coldengine in the prescribed sequence.

Tractor Type Z 8621 - Z 10641 - (A)

Torque 160 - 180 NmValveclearance 0,25“ 0,05 mm

Tractor Type Z 11641 - (B)

Torque 1. first 19Nm2. than 50 Nm3. subsequently

tighten by 90„ “ 5ř)Valveclearance 0,30“ 0,05 mm



191

ADJUSTMENT

F 276 F 277 F 278

ADJUSTMENT OF VALVE CLEA-

RANCE

Engine valve clearance is adjusted atcold engine. The correct valve clearance

at suction and exhaust valve is 0,25 ±

0,05 mm.Change of rocker arm movement:

Change ofrocker arm at

cylinder:

Adjusted valve atcylinder:

1 4

2 3

3 2

4 1

ADJUSTMENT OF VALVE

CLEARANCE

At tractors Z 11641 the engine valveclearance is adjusted at cold engine withpiston in top dead positions at the end ofcompression stroke. The correct valveclearance at suction and exhaust valveis 0,30 mmChange of rocker arm movement:

Change ofrocker arm at

cylinder

Adjusted valve at

cylinder:

1 6

5 2

3 4

6 1

2 5

4 3

ADJUSTMENT OF INJECTORS

The opening pressure of injectors is 22,0- 0,8 MPa. Adjust the pressure to theupper limit of tolerance (22,0 MPa) byshims (1) of various thickness, which areassembled under the spring (2). Theright position of injection nozzle (3) isdone by positioning pins on sealingsurface. Torque of fixing nut (4) is 50 -60 Nm. Before tightening the nut pressthe nozzle against spring by pushing thenozzle against wooden surface.



192

ADJUSTMENT

F 279 F 280

ADJUSTMENT OF INJECTORS

At tractors Z 11641 the openingpressure of injectors is 18 MPa. If themeasured value differs from the men-tioned one adjust the spring of injectorby adding or removing the special shimswhich determine preloading the spring.Checking the injectors on testing bench.

ADJUSTMENT OF BRAKE PEDAL

FREE TRAVEL

The correct play between piston rod ofbrake pedal and piston of main brakevalve is 0,5-1,0 mm. Adjust the play withunlatched pedals and after releasing thepiston rod adjusting nut (1), in which thepiston rod is screwed down.



193

ADJUSTMENT

F 281 F 282

BLEEDING THE SERVICE BRAKE SYSTEM

Bleed the system with unlatched pedals separately for each wheel.- Check the brake fluid level in the brake fluid tank. Add the missing volume with

the new brake fluid up to max. level .- Slide the hose on the vent screw after removing the rubber plug and put the other

end of hose into the transparent reservoir partially filled with brake fluid (3).- Press the brake pedal, loosen the vent screw maximally by 1/4 turn. Press the

brake pedal fully down and tighten the vent screw- Release the brake pedal and repeat procedure so long until the clear brake fluid

without bubbles flows out from the hose. Check the brake fluid level in the brakefluid tank when bleeding to avoid aerating the brake system (1). Keep the hoseend permanently under brake fluid level. Reservoir (2) needs to be kept in thehighest possible position. The brake fluid must be completely exchanged in thewhole brake circuit minimally after two years.

Check the brake fluid level in the brakefluid tank when bleeding to avoidaerating the brake system (1).

Keep the hose end permanentlyunder brake fluid level. Reservoir(2) needs to be kept in thehighest possible position. Thebrake fluid must be completelyexchanged in the whole brakecircuit minimally after two years.



194

ADJUSTMENT

F 283 F 284

ADJUSTMENT OF CLUTCH PEDAL

FREE TRAVEL

The play between pedal piston rod andclutch valve piston does not need to beadjusted - this is adjusted by producer.The mutual position between piston rodand piston rod eye (1) is adjusted thatway the piston rod is maximally pulledfrom cylinder and the pedal is stoppedon the upper stop screw (2) in the sametime. Afterwards the piston rod is fixedby nut (3) to piston rod eye. Checkeventual deformation of dust cap afteradjustment. In case of deformation cor-rect it by hand

BLEEDING THE CLUTCH HYDRAULIC

CIRCUIT

Bleed the clutch hydraulic circuit by thesame way as bleeding the rear brakesystem. Vent screw of clutch hydrauliccircuit is located on the clutch controlcylinder (1).

The brake fluid must be comp-letely exchanged in the wholebrake circuit including the clutchcircuit minimally after two years.



195

ADJUSTMENT

F 285 F 286

BLEEDING THE FRONT CARDAN BRAKE

Bleeding the brake system must be done at 4WD tractors equipped with cardanbrake. It is necessary to start step by step at both pairs of cardan brake cylinders.One pair of cardan brake cylinders has two went screws (1), the second pair hasthree went screws (2). Bleed the system with unlatched pedals so that you will gentlypress one from pedals and you will bleed one pair of cardan brake cylinderconnected with circuit -I by the second pedal. Change pressing to pedals and bleedthe second pair of cardan brake cylinder connected with circuit -II. After bleeding thecardan brake bleed the rear service brake.

BLEEDING THE FRONT DRUM BRAKE

Bleeding the front drum brake can bedone only with right pressure in the airbrake system. Bleed the front drumbrake by vent screws of wheel brakecylinders. Press both pedals connectedby latch at bleeding. In the end bleed thefont brakes.



196

ADJUSTMENT

F 287 F 288

INSPECTION OF SERVICE BRAKE

Press unlatched pedals of service brakeby maximal force approximately 500 N. In case that pedal touches the stop, it isnecessary to adjust service brakes. Thestop is created by the riser on bottompart of brake pedal bracket.

ADJUSTMENT OF SERVICE BRAKE

Before adjustment of service brake the parking brake lever must be in disbrakedposition and there must be a play between nut (1) and pin (2) in lever of disc brake(3). In case you will find this system without a play, loosen gently the nut (1). Lift bothrear tractor wheels and let turn one wheel by means of your helper by hand.Simultaneously tighten the adjusting nut (4) so long the wheel can not be turned byhand. Do not tighten more. After blocking the wheel loosen the adjusting nut by 5/6of turn (5 flats of nut) and check for turning the wheel. After this basic adjustmentcheck for efficiency of service brakes and for the brake effect of both wheels. If theasymmetry of brake effect appears between left and right brake the adjusting nut (4)of brake with bigger brake effect needs to be loosened by required value.



197

ADJUSTMENT

F 290

ADJUSTMENT OF PARKING BRAKE

Adjustment of parking brake follows after service brake adjustment. Parking brakelever must be in disbraked position. Adjust the parking brake so the lock nut (1) ofparking brake link (2) touches the pin in disc brake lever (3). After this basicadjustment check for efficiency of parking brakes and for the brake effect of bothwheels. If the asymmetry of brake effect appears between left and right brake theadjusting nut (1) of brake with bigger brake effect needs to be loosened by requiredvalue.



198

ADJUSTMENT

F 291 F 292

CHANGING THE BRAKE SEGMENTS

OF FRONT CARDAN BRAKE

Brake segments must be exchanged ifthe thickness of lining is smaller than2mm. Brake segments are accessibleafter removing of two cotter pins se-curing the cover sheet metal. The wear of cardan brake segments isindicated by indicator lamp on the dash-board. Note: There are contacts in brakesegment lining and these connect signalelectric circuit after wearing.

ADJUSTING THE FREE PLAY OF FRONT WHEEL TAPERED ROLLER

BEARINGS AT TRACTORS Z 8621, Z 9621

- Fix tractor against movement, lift up and support the front axle.- Remove the bearing cover (1) and remove the cotter pin (2) from the castle nut

(3).- Tighten the castle nut (3) by 15 Nm.- Loosen the nut by 180„ and release the bearing by knocking of wooden mallet to

the wheel hub.- Retighten the castle nut (3) with torque wrench by 3-5 Nm. If the slots of castle

nut are not aligned with opening in pin loosen the nut to the nearest slot. Wheelmust be freely turned without evident play but without evident resistance.Bearings mustnřt be noisy. (Hub sealing creates a friction against turning and thisneeds to be taken into consideration).

- Lock the castle nut with a new cotter pin.- Add the grease in cover (1) fill maximally 1/3 of space in the hub.



199

ADJUSTMENT

F 293 F 294

ADJUSTING THE LIFTING LINKS OF

PICK UP HITCH

Chose the position control - "P" by hyd-raulic selection control lever. Raise thehydraulic lifting arms into the upper po-sition. Adjust the telescopic links thatway you thread the lock nuts to guidingtube without play. Than unscrew the nutsby 4 threads.

ADJUSTING THE PUSH-PULL CABLE

Adjust when the carrier with towing hookis in full contact with carrier hooks. Thepush pull cable must be undertensioning that way to be the lever in cabwithout play. Lock the push pull cable bylock nut against loosening.



200

NOTE



201

NOTE



202

NOTE



203

ELECTRICAL INSTALLATION

PageElectrical equipment ................................................................................................ 204Basic service information ........................................................................................ 204Battery..................................................................................................................... 205Battery maintenance ............................................................................................... 205Charging and maintaining the batery ......................................................................206Alternator................................................................................................................. 208Alternator maintenance ........................................................................................... 208Fuse box ................................................................................................................. 209Checking the adjustment of front mask headlights ................................................. 210Adjustment of front grill headlights .......................................................................... 210Checking the adjustment of cab roof headlights ..................................................... 211Wiring harness diagram of tractor ........................................................................... 212



204


F 295 F 296

ELECTRICAL EQUIPMENT

Nominal voltage (minuspole (-) grounded) 12 V

Battery (1)

Z 8621 - Z 10641

AKUMA 12V/135Ah

∗ AKUMA 12V/165Ah12 V

Z 11641

AKUMA 12V/165 Ah HDAKUMA 12V/180 Ah 12 V

Alternator with voltage regulator (2)

Z 8621 - Z 10641 14V/70 A

Z 11641 6V/85 A

Starter motor (3) 12V/3,5kW

BASIC SERVICE INFORMATION

Battery "minus" pole must be ever connected with the ground and "plus" pole con-nected with alternator. Vice versa connected battery destroys the complete electro-nics of alternator. If starting the tractor by means of another battery or auxiliarysource don’t forget to connect "plus" to "plus" and "minus" to "minus". Disconnectbattery by removing the connector from tractor ground (-) if changing any part ofcharging circuit. Avoid possible short circuit on connectors.



205


F 297 F 298

BATTERY

Battery (1) is accessible after removingthe front grill of bonnet.

∗ Battery switch (3) is located on theleft-hand side under the cab. This isaccessible from outside.

BATTERY MAINTENANCE

Maintain the battery clean, good fixed tothe vehicle. The fixing device mustn ’t de-form the battery case. Electrolyte levelmustn’t be under the minimum mark thatis on the case.

Add distilled water only!1. First study the operator ’s manual for working with batterry.2. Safe your eyes by glasses or by safety shield!3. Electrolyte is a caustic agent that ’s why keep attention when working with

electrolyte! Neutralize the skin and wear stained by electrolyte with soapwater. Wash them by clean water.

4. Hydrogen is released from electrolyte at charging the battery and thiscreates the explosive mixture being mixed with the air. That ’s whymanipulation with open flame and smoking at battery is forbidden!

5. The explosion might be caused by a spark created at manipulation withbattery terminals when the closed charging circuit!

6. Keep children out of battery and electrolyte!7. Discarded battery is ecologically dangerous reject. Let it scrap by

specialists (service network). They will do it free of charge when buyingthe new battery.



206


CHARGING AND MAINTAINING THEBATERY

A) Charging on the vehicle and out-side the vehicle

1. Systematic overcharging and dis-charging of battery damages andshortens its life. Correctly adjustedcharging system maintains batterynear to the fully charged status. Atset level of voltage (13,8 - 14,4 V) incharging system and average tractoroperation it is sufficient to check andmaintain the level of electrolyte bydistilled water once per six month.

2. At heavier operation and anotherlevel of regulated voltage it is neces-sary more frequent checking thelevel of electrolyte. Overcharging thebattery on vehicle (more than 14,4 V)causes bigger loose of electrolyte.

3. It is necessary to charge the batteryremoved from the vehicle or in thevehicle which is not in operation (seestorage of charged batteries withelectrolyte). It is also suitable tocharge battery in vehicle beforewintertime and after wintertime. Inwinter season and strong frost theelectrolyte might be frozen at almostdischarged battery (density ofelectrolyte 1,12 - 1,15 g/cm

3) in this

case the life will be substantiallyreduced (disintegration of active

agent and destroy of battery case).Heavily discharged battery (densityof electrolyte lower than 1,07 g/cm

3)

might be frozen already at severaldegrees below zero.

4. Charge the battery by current that is0,1 of total battery capacity (or lower)up to fully charged status.

5. Charging device with constantvoltage 14,4 V can be also used.Charging time can be max. 30 hoursaccording to status of discharging.

6. Fully discharged battery must becharged as soon as possible, other-wise its full capacity can not be re-stored.

B) Charged battery

1. Battery is considered as fullycharged if all battery cells generatesthe gas with same intensity. If theelectrolyte density is 1,28 g/cm

3 in all

cells and if the total voltage of batteryis within 15,3 - 16,5 V, measuredwith the prescribed charging current.

2. Status of full charging is confirmedwhen the received density of electro-lyte and level of voltage is notchanged within farther two measure-ments following after two hours.

3. For example the charging status foryour orientation: status of chargingcorresponds to density of electrolyte.Charging status is characterized by

density of electrolyte and ismeasured by densimeter. Every cellneeds to be measured.

Status of charging = density ofelectrolyte

charging status Electrolyte density

100 % 1,28 g/cm3

70 % 1,23 g/cm3

50 % 1,20 g/cm3

20 % 1,15 g/cm3

0 % 1,12 g/cm3

C) Storage of charged battery with

electrolyte

1. Before storage the battery must becharged up to final symptoms ofcharging. It must be disconnectedfrom charging system, cleaned andwith plugs.

2. Battery that is built into a plastic casefrom polypropylene must be chargedafter three month of storage becauseof smaller self-discharging.



207


3. Intervals for checking the status ofelectrolyte are: when charging thebattery or minimally once per 6month, battery is maintained byadding the distilled water! If someelectrical components are per-manently connected even at discon-nected key switch (for exampleWarning) it is necessary to check thestatus of charging “ i.e. voltage w/oload and electrolyte density min. 1xafter 1 month.



208


F 299 F 300

ALTERNATOR

Alternator is accessible after removingthe right side shield. Charging status isindicated by the red indicator lamp onthe instrument panel.Damaged indicator lamp bulb12 V 1,2 W must be immediately ex-changed.

All wires connected with thealternator must be disconnectedwhen repairing tractor by electricarc welding. Protect the wire"+B" against short circuit.

ALTERNATOR MAINTENANCE

- Protect the alternator against penetration of water or diesel fuel when washingand cleaning the tractor.

- Battery must be never disconnected from alternator within the operation!- The alternator must never run without load i.e. with disconnected terminal "+B"

and connected terminal "+D". When increased engine speed, this status wouldcreate excessively high voltage of alternator and the voltage would damage thealternator electronics.

- Never create the short circuit of any alternator connector within the operation!- Alternator must not be additionally excited. Alternator electronics is damaged in

this case.- Keep the perfect electrical connection of alternator terminals and perfect alter-

nator ground.



209


F 301

FUSE BOX

Fuse box is accessible after removingthe steering support left cover. The mainfuse box has eight polls. Farther four pollfuse box located nearby the main box isassembled at cab tractors.Fuses are of knife type and the pre-scribed value of amperage must be keptwhen exchanging fuse. In case of re-peated fuse exchange look for theauthorized service.

Position of fuse in fuse box Pos. Fusesize

Protected circuit

12

3

4

56

7

8

9

101112

15A15A

15A

15A

15A15A

15A

15A

15A

15A15A15A

Hazard light interrupter, brake lightsacoustic horn, outlet 30 of starterinterlock relayfront driving axle, diff. lock, front PTOw/ indicator lamps, diff. lock relay„3„, dashboard supply, plug socketfor assembly lamphigh beam head lights with indicatorlampleft position light, license plate lightright position light, working headlightwith indicator lampright low beam head light, fog lightwith indicator lampleft low beam head light, indicatorlamp for grill/roof head lightfront and rear wiper, washer, relay„4„,heating blower, relay „5„ and „6„

reserveair condition (AC compressor clutch)



210


F 302 F 303

CHECKING THE ADJUSTMENT OF FRONT MASK HEADLIGHTS

Tractor must stand on horizontal ground and tires must be inflated to the specificpressure when checking on a testing wall. Basic vertical setting of grill headlightswith low beam is adjusted with - 3,5 % tolerance from basic setting (measured atstopped tractor with shipping weight). Light beams must be parallel with tractor axisin horizontal direction.

I - Distance between testing wall and tractor headlight (5 m).

h - Height of headlight center above ground

∆h - Inclination of headlight (-3,5 %) to distance of testing wall = 17,5 cm

α - Raising the picture of asymmetric headlight (15%)

ADJUSTMENT OF FRONT GRILL

HEADLIGHTS

Adjust the light by means of both screws(1) for vertical and horizontal directionsimultaneously - horizontally + 2 , ; verti-cally +1 , to -6 , .Each light is adjusted separately. Bulb isexchanged from the rear part of para-bola. Slide out or remove the batterybecause of limited space.



211


F 304

CHECKING THE ADJUSTMENT OF CAB ROOF HEADLIGHTS

Any point of illuminated surface on the left side of road must not be more far than 30m.Light beams must be parallel with tractor axis in horizontal direction.Adjust the headlights at tractor with its shipping weight. Front roof headlights can beused on the road only in case that front implement is attached or if the attachedmachine covers grill headlights.



212

WIRING HARNESS DIAGRAM OF TRACTOR

F 307

Poz. Location of bulb Voltage Power Socket Notice

1 front asymmetric headlights 12 V 45/40 W2 cab roof asymmetric headlights 12 V 45/40 W (low beam connected)3 front combined headlights

turning lights 12 V 21 Wposition lights 12 V 10 W

4 working lights 12 V 55 W H 35 rear combined lights

tail lights 12 V 10 Wbrake lights 12 V 21 Wturning lights 12 V 21 W

6 license number plate illumination 2x12 V 5 W7 dashboard “ integrated instrument

panel 12 V 1,2 W8 cab illumination 12 V 5 W9 switch of hydraulic electromagnetic

control12 V 1,2 W



213


F 305



214


1. Hazard light interrupter2. Hazard lights3. Headlight switch “ (main, position,

off)4. Combined toggle switch5. Low beam headlight switch (roof-grill)6. Front grill headlights7. Front cab headlights8. Working lights9. Fog light10. Left front headlight11. Left rear light12. License number plate illumination13. Seven pole socket14. Front parking lights15. Right rear light16. Right front headlight17. Switch of Hi-Lo18. Hi-Lo - 119. PTO control (front, rear)20. Indicator lamp of air cleaner clogging21. Hi-Lo indicator lamp22. Valve 2. of Hi- Lo23. Valve 1. of Hi- Lo24. Sensor of air cleaner clogging25. Differential lock26. Differential lock valve27. Dashboard illumination28. Glow plugs29. Front wheel drive30. Front wheel drive valve31. Fuel level indicator lamp32. Fuel level indicator33. Fuel gauge

34. Thermometer35. Failure indicator lamp36. Blower37. Air pressure indicator lamp38. Blower39. Air condition40. Pressure gauge41. Front wiper42. Washer43. Rear wiper44. Wiper switch45. Lubrication indicator lamp46. Starter motor47. Alternator48. Tachometer49. Tachometer50. Indicator lamp of charging51. Battery52. Key switch



215


1. Right roof headlight2. Front wiper3. Ground connector of front wiper4. Ground connector of front headlight5. Control panel of heating blower6. Left roof headlight7. Heating blower motor8. Washer motor9. Ground connector of washer10. Connector of washer motor11. Right front combined light12. Left front combined light13. Working light14. Light of inner illumination15. Front wiper switch16. Rear wiper17. Rear wiper switch18. Connector of hydraulic outer control19. Blower connectors20. License number plate illumination21. Right rear combined light22. Left rear combined light

F 306



216

NOTE



217

NOTE



218

NOTE



219

PLANNED TECHNICAL MAINTENANCE

PagePlanned technical maintenance ............................................................................. 220Used operation liquids and fluids ............................................................................ 228Lubrication chart of tractor ...................................................................................... 232



220


INSPECTION TRACTOR MAINTENANCE 1

After engine hours

Inspection and maintenance operations

ENGINE

Engine oil exchange X X Every 200 hoursEngine oil cleaner exhcange X X Every 200 hoursRetightening the cylinder head nuts XValve clearance inspection and adjustment X X X X X XInspection of engine lubrication pressure - after starting X Every 10 hoursInspection for level and lubrication syst’ m leaks X Every 10 hoursCleaning the turbocharger compressor housing and intake manifold X XInspection of turbocharger for leakage and bearing play X XInspection for water pump bearing play X X

ENGINE ACCESSORY

Inspection for leaks and function of hydraulic system clutch control X Every 10 hoursCheck of coolant level and cooling system leakage X Every 10 hoursCheck of fuel system leakage X Every 10 hours

1 Air cleaner maintenance X X Every 200 hours2 Cleaning the radiator fins by pressure air X X Every 200 hours

Cleaning the AC condenser fins by pressure air Every 50 hours3 Coolant exchange X X X X X

Inspection and adjustment of injection pump X XInspection for turbocharger lub. System leaks X X X XInspection for exhaust manifold tightness X X X X X X X X X X X XInspection for injector opening pressure and nozzle function X X X X X X XFuel cleaner cartridge exchange X X X X X X X X X XDrive belt tension inspection and adjustment X X Every 200 hoursFuel course cleaner inspection and cleaning X X Every 200 hours



221



After engine hours


TRANSMISSION

Transmission oil cleaner cartridge exchange X X Every 200 hoursCleaning the magnetic element and trans. oil trainer ∗ X X Every 200 hours

Inspection for oil level in transmission ∗ X X Every 200 hours

3 Exchange of oil in transmission X X X X XFront PTO oil level inspection X Every 200 hours

3 Front PTO oil level exchange ∗ X X X X X

Greasing of front PTO cardan shaft joint by vaseline X X Every 200 hours

AXLES AND STEERING

3 Exchnge of oil in front axle housing and final drive housings ∗ X X X X X

Inspection for oil level in front axle housing and final drive housing X Every 200 hoursExchange of oil and hydrostatic steering cleaner cartridge ∗ X X X X X

4 Hydrostatic steering hoses exchange X XGreasing of front axle pivot pin X Every 200 hoursGreasing of front axle knees (extension) X Every 200 hours

3 Greasing of front wheel hub (add grease max. 1/3 of space) X X XGreasing of steering ball joints X X X X X X X X X X

3 Greasing of axle bearing at right final drive X X X3 Greasing of drive shaft joints and grooves of shaft X X X

Inspection for wheel bearing play X X X X X X X X X X XInspection for front wheel toe in X X X X X X X X X X XInspection for torque of bolts, nuts, at steer. con. rod, steering arms andwheels X Every 200 hours



222



After engine hours


HYDRAULIC

Greasing of top sensing torsion bar X X X X X X X X X XGreasing of top sensing lever X Every 200 hoursGreasing of lift assist cylinder pins X Every 200 hoursGreasing of telescopic control link X Every 200 hoursGreasing of right lifting link X X X X X X X X X XGreasing of front three point hitch pins X X X X X X X X X XInspection for front three point hitch hydraulic circuit leaks X X X X X X X X X XInspection for leaks and functions of particular hydraulic systems X X Every 200 hours

BRAKE SYSTEM

Inspection for brake liquid level and brake system leaks X Every 10 hoursInspection for brake system leaks and trailer brake afficiency X Every 10 hoursInspection for function and adjustment of service and parking brake X X X X X X X X X XAir brake adjustment X X X X X XGreasing of hydraulic brake system control X XChecking the tightness of air pressure regulator nuts XDraining the condensed water from air tank X X X X X X X X X XGreasing of all sliding surfaces of air instruments X X

5 Exchange of rubber parts at brake system X X6 Air tank revision X X

Exchange of diaphragm, cleaning and adjustment the air pres. regulator X X



223



After engine hours


ELECTRICAL INSTALATION

Inspection for charging function X Every 10 hours7 Inspect for status and function of electrical equipment and accessory X X Every 200 hours

Inspection for charging voltage X X8 Inspection for battery electrolyte level X X Every 200 hours8 Cleaning the battery terminals and their conservation by vaseline X Every 200 hours

Inspection of starter, bearings, carbon brushes and their holders X XInspection of alternator, bearings, electronics, collectors X X

3 Greasing of front and rear wiper mechanism X X X X X

CAB AND TRACTOR ACCESSORIES

Cleaning and lubricating the lock of steering column X X X X X X X X X XInspection for driver„s seat function, greasing of moving parts X Every 200 hours

9 Inspection for seat shock absorber leaks X XGreasing of door and rear window hinges, door pin and locks X X X X X X X X X XGreasing of trailer hitch automatic mouth X Every 200 hoursGreasing of pick up hitch X X X X X X X X X XInspection and eventual cleaning of cab filters X Every 10 hoursInspection of hitches, attachments including trailer X Every 10 hours



224



After engine hours


ENGINE OF TRACTORS Z 11641 FORTERRA

Exchange of running-in oil only after first 50 hoursEngine oil exchange Every 150 hoursInspection for engine for engine oil level Every 10 hoursFirst exchange of engine oil cleaner cartridge only after first 50 hoursExchange of engine oil cleaner Every 300 hoursExchange of fuel cleaner Every 300 hoursInspection of injectors Every 600 hoursInspection of injection pump Every 1200 hoursMaintenance of air cleaner according to clogging indicator, minimaly once

per yearAdjustment of valve tappets Every 600 hoursCheck of belt tightening Every 50 hoursCheck of manifold, alternator and starter motor Every 1200 hours



225


Note :

∗ After first implementation of new tractor or at after general repair.1- According to dustiness and uncleanness of intake air (straw etc.) every 50 to 200 hours2- Clean daily when working with front attached machines if necessary in shorter periods3- Max. period - 2 years.4- Change hoses at least after four years from time of their production.

New hoses must not be older than two years from time of their production mentioned on hose surface5- Max. period - five years from time of tractor manufacturing.6- Max. period - five years from time of air-tank manufacturing or after accident.7- This covers the adjustment of front asymmetric headlight and adjustment of brake indicator light switches (max. play between

switch and foot brake pedal stop must be 0,5 to 1,0 mm).8- In summer season - every 100 hours.9- In case of leakage remove the failed piston rod sealing, flush out the shock absorber by petrol and fill it up with 70 cm

3 of

shock absorber oil.



226

PLANNED TECHNICAL MAINTENANCE ’ MIDDLE REPAIR

This is carried out after 2400 hours.

AT TRACTORS Z 8621 - Z 10641

1. Disassemble the compressor case of turbocharger withinlet manifold.

2. Disassemble spiral of compressor.3. Remove impurities sedimented in compressor case and on

the rotor by brush with solvent.Cleaning by sharp subject or by wire brush isforbidden!Do not repair eventually deformed blades!

INSPECTING THE TIGHTNESS OF TURBOCHARGER AND

THE BEARING PLAY

In case the oil penetrates from bearing case round the shaftand in case the allowed radial and axial bearing play isexceeded, let the turbocharger repair in specialised workshop.Exchange the hose at inlet manifold and at outlet of lubricationoil from turbocharger when reassembling the turbocharger tothe engine. Fix the proper tightness of both connections. Fill0,2 litres of engine oil into inlet oil opening when reassemblingthe turbocharger to the engine.

The inner conservation of turbocharger must be done ifthe tractor is a long time out of operation.

This is done even after short starting the engine. That „s whywe recommend to start the turbocharged engine minimallyonce per three month at tractor out of operation and let theengine run for few minutes. The inner conservation is done bythis way.

LUBRICATING THE ELEMENTS OF HYDRAULIC BRAKES

At moving parts i.e. brake cylinders, clutch cylinders and brakeequaliser, coat the sliding surfaces from sealing rings indirection to the outer dust rings by special vaseline forhydraulic brakes (for example Pentosin special). In the sametime inspect rubber parts of brakes. Exchange damagedrubber parts. Exchange all rubber parts at least up to fiveyears from date of tractor manufacturing.



227

PLANNED TECHNICAL MAINTENANCE ’ GENERAL REPAIR

General repair of tractor must be done in case that its fartheroperation is not economical anymore. If many parts needrepair and the complete technical status of tractor jeopardizesthe safe operation.The middle life of engine and transmission is 6000 hours if allregulations for maintenance are kept according to thetechnical documentation of producer when working in normalclimatic conditions and in even terrain.This number of hours is valid if the following tractor workingconditions are taken into consideration:

tillage and sowing preparation 15 - 25 %sowing 10 - 15 %harvesting 10 - 20 %agricultural transportation 40 - 65 %

If the tractor works in hilly conditions the life of engine andtransmission is reduced by 15-20 %.If the tractor works in worse climatic conditions the life ofengine and transmission is reduced by 15-20 %.

Note:Front driving axle is also considered as a transmission.

TECHNICAL MAINTENANCE OF TRACTOR AFTERGENERAL REPAIR

Run-in the tractor after general repair according to rules forrunning in the new tractor. Do the maintenance as on the newtractor.



228

PLANNED TECHNICAL MAINTENANCE ’ USED OPERATION LIQUIDS

Oils for turbocharged engines Z 8621 - 10641 Forterra turbo (tab. 1)

Producer Oil trade mark Viscosity class API class

Paramo PardubiceParamo PardubiceParamo PardubiceSHELLARALARALKORAMO Kolín+ MV

M7ADS III-TRYSKM7ADS III-TRYSK SUPERM7ADS IV-TRYSK SUPER TURBORIMULA TXMULTI TURBORALAUSTROTRACMOGUL DIESEL DTT Plus+ MV truck M Plus+ MV truck FE Plus+ MV truck FE+ MV AUSTROTRAC+ MV truck LD+ MV RME Plus

20W/4015W/4015W/4010W/3015W/4010W/3010W/4015W/4010W/4010W/4010W/3015W/4015W/40

SF/CD+SG/CE

SG/CF-4SG/CF-4CF-4/SHCE/SFCF-4

CF-4/SGCF-4

CE/SGCECE

CE/SG

Oil for naturally aspirated engine - Z 11641 Forterra

Akros Akros Motor Oil 30 . only running in oil! - -

Akros Akros Super 15W/40 -



229


Oils for transmissions, front driving axle, front PTO gearbox (tab. 2)Z 8621 - 10641 Forterra turbo and Z 11641 Forterra

Producer Oil trade mark Viscosity classSAE J 306 MAR 85

API classAPI, SAE J

308 NOV 82

Paramo Pardubice Gyrol - UTTO 80W GL-4Paramo Pardubice Gyrol - PP80 80W GL-4Esso Torque Fluid 62 80W GL-4Koramo Kolín Mogul Trans 80 80W GL-4

Oils for front driving axle (tab. 3)

Z 8621 - 10641 Forterra turbo and Z 11641 Forterra

Producer Oil trade mark Viscosity class API class

Agip Agip Rotra Multi THT

HYDROSTATIC STEERING (tab. 4)

Hydraulic oil OH - HM 46 is used for 2WD tractors (this oilcorresponds by its features to high pressure oils according toclassification ISO 6743, ISO - L - HM 46).Mogul HM 46, Mogul H - LPD 46

Hydraulic oil OH - HM 32 is used for 4WD tractors (this oilcorresponds by its features to high pressure oils according toclassification ISO 6743, ISO - L - HM 32).Mogul H - LPD 32, Mogul HM 32

PLASTIC VASELINE

Plastic vaseline LITOL 24 according to GOST 21150.75

(classification of plastic lubricant) or PM - LA 2 (classificationof plastic lubricant ISO 6743/9, ISO - L - XBCEA 2).

FUEL

Summer diesel fuel NM - 4 according to / SN 656505 forseason from 1.4. to 31.10.Winter diesel fuel NM - 22 according to / SN 656506 forseason 1.11. to 31.3.Note: Similarly the suitable kinds of fuel must be used abroad.



230


FLUIDS FOR HYDRAULIC BRAKES AND ENGINE CLUTCH

Brake fluid SYNTHOL 205 yellow according to PND 31-656-80(classification of fluid according to prescription ISO 4925 orSAE J 1703).The fluid is not suitable for arctic conditions.

1. Brake fluid must be exchanged minimally once pertwo years without consideration of operated hours.

2. Brake fluid of the same classification can bemutually mixed..

LIQUID FOR ENGINE COOLING CIRCUIT AND FOR CABHEATING - TRACTORS Z 8621 - Z 10641

Antifreeze mixture FRIDEX - STABIL, FRIDOL 91 anddimineralised water in mixing ratio 1:1,5 (add the mixture in thesame mixing ratio). Antifreeze for exchanging abroad mustcontain anticorrosion additives saving all materials (includingrubbers and cylinder head gasket) of engine cooling systemand tractor heating system.

1. At tractors Z 10641 the water without antifreeze cannot be used!

2. Exchange the antifreeze after two years ofoperation.

3. Fluids FRIDEX - STABIL, FRIDOL 91 can bemutually mixed. Mixing with another liquids is notverified.

Use only prescribed antifreeze

AKROS FLUID!into cooling system of engine at tractorZ 11641 Forterra!

It is not allowed to add water or anotherfluid into this antifreeze!

Exchange after 1200 hours or at least after two years ofoperation.



231

NOTE



232


F 308



233


Poz. Lubrication point - inspection Fill sort

123456789

101112131415161718192021222324252627282930

Cooling system - antifreeze exchangeEngine - oil exchangeSteering oil tankBrake fluid tankTransmissionDriver„s seat (handle and seat rollers)Driver„s seat shock absorberFront axle pivot pin (2 lub. nipples)Rigid knees of front axle (2 lub. nipples)Front wheel bearingsSteering lever ball jointsTop link sensing lever (1 lub. nipple)Lift assisting cylinder pins (2 or 4 lub. nipples)Control of vertical lift link (1 lub. nipple)Right vertical lift link of three point hitch (1 lub. nipple)Torsion shaft of sensing control (1 lub. nipple)Push-pull cable of pick up hitch, hand parking brakeCab blower bearingsBearing and lever system of front and rear wiperLeft lifting arm pinLower pin of three point hitch supportCab door hingesTightening nuts of lower draft linkFront PTO jointsFront PTO gearboxFront three point hitch pinsTrailer hitch automatic mouth (4 lubrication. nipples)BatteryClutch control cylinder (after disassembly)Brake control cylinders (after disassembly)

Coolantsee (tab. 1)see (tab. 4)Synthol 205see (tab. 2)PM - LA 2

Shock absorb oilPM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2PM - LA 2

see (tab. 2)PM - LA 2PM - LA 2

*Distilled waterWACKER Silicon paste P4 WeichWACKER Silicon paste P4 Weich



234


F 309



235


Poz. Lubrication points - check Fill kind

3132

Pick up hitch pinBrake amplifierpneumatic parthydraulic part

PM - LA 2

PM - LA 2WACKER Silicon paste P4 Weich

* - add the water up to level marked on the battery case



236


Used in Fill sort Z 8621-Z 10641(in litters)

Z 11641

(in litters)

Coolant Z 8621 - Z 10641 Fridex Stabil (Fridol 91) + dimineralisedwater

17,5 - 19,0•

20,5 - 23,0••

-

Coolant Z 11641 Akros Fluid - 18,5 l

Fuel Diesel fuel 4, diesel fuel 22 180 180

Engine oil see (tab.1) 10 l 15 l

Oil for transmission and diff case see (tab.2) 52 l 52 l

Oil for front driving axle Torque Fluid 62 (Rotra Multi THT) 6,5 6,5

Oil for final drive of front driving axleTorque Fluid 62 (Rotra Multi THT)

2x0,6 2x0,6

Oil for gearbox of front PTOsee (tab.2)

1,2 1,2

Brake fluid HD 205 0,5 l 0,5 l

Oil for hydrostatic steering see (tab.4) 2,7 - 2,9 l

Oil for shock absorber of seat (Mars) shock absorber oil 0,07 -

• - Z 8621 - Z 9641

•• - Z 10641

At 4WD tractors the oil quantity is by 2 litters bigger. It is necessary to add farther 7 litters of oil when working with tractor in hillyconditions. When driving implements requiring bigger quantity of oil in outer circuit it is possible to add 15 litters intotransmission.



237

NOTE



238

NOTE



239

MAIN TECHNICAL PARAMETERS

PageTechnical data of engines at tractors Z 8621, Z 8641, Z 9621, Z 9641,Z 10641 ................................................................................................................... 240Technical data of engines at tractor Z 11641.......................................................... 242Zetor 8621 Forterra turbo........................................................................................ 245Zetor 9621 Forterra turbo........................................................................................ 245Zetor 8641 Forterra turbo........................................................................................ 255Zetor 9641 Forterra turbo........................................................................................ 255Zetor 10641 Forterra turbo...................................................................................... 277Zetor 11641 Forterra ............................................................................................... 293Dimensions of front tires ......................................................................................... 306Dimensions of rear tires ......................................................................................... 306Force, power, and fuel consumption .......................................................................306Speed of tractors Z 8621 - Z 10641 Forterra turbo (30km/h) ..................................307Speed of tractors Z 8621 - Z 10641 Forterra turbo (40km/h) ..................................309Speed of tractors Z 11641 Forterra (30km/h).......................................................... 309Speed of tractors Z 11641 Forterra (40km/h).......................................................... 310Rear independent PTO .......................................................................................... 311Front independent PTO .......................................................................................... 311



240


TECHNICAL DATA OF ENGINES AT TRACTORS Z 8621, Z 8641, Z 9621, Z 9641, Z 10641

Tractor type Z 8621, 8641 Z 9621, Z 9641 Z 10641

Engine type 1203 1003 1303Engine execution diesel, four stroke with direct fuel injection, turbochargedEngine execution in line, water-cooledNumber of cylinders 4 4 4Displacement cm

34156 4156 4156

Bore x stroke mm 105x120 105x120 105x120Rated speed RPM 2200 2200 2200Ignition sequence 1-3-4-2 1-3-4-2 1-3-4-2Compression ratio 17 17 17Max. overspeed RPM 2460 2460 2460Low idle speed RPM 700-50 700-50 700-50Engine power at nominalspeed according to ISO 2288 kW 60 67,5 76Specific fuel consumption atrated speed g.kW

-1.h

-117,99 20,07 21,86

Engine lubrication Press type with pump -GerotorMax. engine oil consumptionafter 100 hour running in g.kW

-1.h

-10,7 0,7 0,7

Engine oil pressure at ratedspeed and oil temperature80’ C MPa 0,2 - 0,5 0,2 - 0,5 0,2 - 0,5Min. oil pressure at 700 RPMand oil temperature 80 ’ C MPa 0,05 0,05 0,05Coolant temperature ’ C 80 - 95 80 - 95 80Timing OHV OHV OHVOil cleaner Full flowFuel cleaner One stage with cartridge



241


TECHNICAL DATA OF ENGINES AT TRACTORS Z 8621, Z 8641, Z 9621, Z 9641, Z 10641

Injection pump Type PP4M10K1f3460 PP4M10K1f3459 PP4M10K1f3461Nozzle DOP 150 S 428 - 4104 DOP 150 S 428 - 4104 DOP 150 S 428 - 4104Injector opening pressure 22-0,8 22-0,8 22-0,8Timing angle ’ 23+1 23+1 23+1Valve clearance measured atcold engine - suction - exhaust

mmmm

0,25“ 0,050,25“ 0,05

0,25“ 0,050,25“ 0,05

0,25“ 0,050,25“ 0,05



242


TECHNICAL DATA OF ENGINES AT TRACTORS Z 11641

Tractor type Z 11641

Engine type 1000.6.W Engine execution diesel, four stroke with direct fuel injection Engine execution in line, water-cooled Number of cylinders 6 Displacement cm

3 6000,66 Bore x stroke mm 105x115,5 Rated speed RPM 2350 Ignition sequence 1-5-3-6-2-4 Compression ratio 17 Max. overspeed RPM 2520 Low idle speed RPM 750“ 10 Engine power at nominalspeed. according to ISO 2288

kW

Not available in the time when printed thispublication.

Specific fuel consumption atrated speed

g.kW

-1.h

-1 28,3

Engine lubrication Pressure oil ( gear type pump) Max. engine oil consumptionafter 100 hour running in

g.kW

-1.h

-1 Not available in the time when printed this

publication.

Engine oil pressure at ratedspeed and oil temperature80’ C

MPa

Not available in the time when printed this

publication.

Min. oil pressure at 700 RPMand oil temperature 80 ’ C

MPa

Not available in the time when printed thispublication.

Coolant temperature ’ C 100 Timing OHV Oil cleaner Full flow Fuel cleaner One stage with cartridge



243


TECHNICK’ DATA MOTOR # TRAKTOR# Z 11641

Injection pump Type BOSCH PFR 1K 90A 555 Type of governor electronic Type of Injectors BOSCH - DLLA 155 S 1323 Injector opening pressure MPa 180+8 (bar) Timing angle ’ 16Valve clearance measured atcold engine - suction - exhaust

mm mm

0,30 0,30



244

ZETOR 8621 FORTERRA TURBO




245


MAIN DIMENSIONS (mm)

Tractor type Zetor 8621 Forterra turbo, Zetor 9621 Forterra turbo

WEIGHT (kg)

Front tire 7,50 - 20

Rear tire 16,9R34 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38

MAIN DIMENSIONS (mm) (tolerance & 2%)

Overall length with hitch 4384

Width over rear fenders- (narrow) 1974

Width over rear fenders- (wide) 2136

Width over tires with tread 1500 mm 1929

1929

1967

1967

1967

1929

2020

Height up to muffler top (muffler with flap w/o spark arrester)

2758

2750

2756

2794

2794

2750

2794 Height up to cab top 2648 2677 2662 2684 2684 2677 2684

Ground clearance under front axle housing 536

Ground clearance under swinging drawbar inlowest position

237

309

280

272

272

309

272

Height of pick up hitch (middle of clevis by 100 mm)

614-814

684-884

656-856

648-848

648-848

684-884

648-848

Height of swinging drawbar (to lower innersurface of clevis)

277

349

240

312

312

349

312

Height of pick up hitch (to surface of hook)

368

428

402

404

404

428

404

Height of PTO 610 670 647 645 645 670 645

Front wheel tread- standard- for agricultural operation - adjustable

1500

1425 - 1800

Rear wheel tread- standard- for agricultural operation - adjustable

1500

1500 - 1800

Wheel base 2395



246




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38

Main dimensions (mm) (tolerance & 2%)

Height up to steering wheel top 1979 2005 1992 2014 2014 2005 2014

Contour turning diameter with one wheelbraked

Not available in the time when printed this publication.

Tread turning diameter with one wheelbraked


Weight (kg (tolerance & 2%)

Shipping weight of tractor with cab- front axle- rear axle

3330 1295 2035

3406 1295 2111

3391 1295 2096

3525 1295 2230

3555 1295 2260

3451 1295 2156

3480 1295 2185

Ballast weights-front bottom ballast weight 1+3 120 (1x30 + 3x30) front ballast weight 1+2 90 (1x30 + 2x30)

Ballast weights-rear 2+4 170 (2x25 + 4x30 - Z 8621, Z 9621) 2+6 230 (2x25 + 6x30 - Z 9621)

Water in rear tires 2x250 2x260 2x340 2x385 2x385 2x335 2x390



247




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38

Max. allowed load on axles (kg) Inflating (kPa) at max. speed

Front axle - not braked 30 km/h 20 km/h 8 km/h

1750-280 2362-350 2600-350

Rear axle 30 km/h 20 km/h 8 km/h

5200-160 5500-140 5500-110

5500-160 5500-130 5500-100

5500-140 5500-120 5500-90

5430-140 5500-140 5500-100

5500-130 5500-110 5500-80

5500-140 5500-110 5500-90

5500-110 5500-90 5500-80



248




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38



Width over rear fenders - (narrow) 1974


Width over tires with tread 1500 mm 1929 1929 1967 1967 1967 1980 2020


2746

2758

2752

2788

2788

2758

2788

Height up to cab top 2642 2674 2659 2683 2683 2674 2683



240

315

283

274

274

315

274


619-818

690-890

660-860

650-850

650-850

690890

650-850


280

356

324

314

314

356

314


370

435

409

406

406

435

406

Height of PTO 612 675 648 647 647 675 647


1500

1425 - 1800


1500

1500 - 1800

Wheel base 2395



249




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38



Contour turning diameter with one wheelbraked -


Tread turning diameter with one wheelbraked -




3323 1288 2035

3399 1288 2111

3384 1288 2096

3518 1288 2230

3548 1288 2260

3444 1288 2156

3473 1288 2185

Ballast weights-front bottom ballast weight 1+3 120 (1x30 + 3x30 - Z 8621) front ballast weight 1+2 90 (1x30 + 2x30 Z 8621, Z 9621)

Ballast weights-rear 2+4 170 (2x25 + 4x30) 2+6 230 (2x25 + 6x30)




250




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38



1770-220 2390-275 2650-275


5200-160 5500-140 5500-110

5500-160 5500-130 5500-100

5500-140 5500-120 5500-90

5430-140 5500-140 5500-100

5500-130 5500-110 5500-80

5500-140 5500-110 5500-90

5500-110 5500-90 5500-80



251




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38






1929

1967

1967

1967

1980

2020


2748

2761

2755

2790

2790

2761

2790




242

311

281

272

272

311

272


619-819

686-886

657-857

648-848

648-848

686-886

648-848


282

351

321

312

312

351

312


370

430

404

404

404

430

404

Height of PTO 612 672 646 645 645 672 645


1500

1425 - 1800


1500

1500 - 1800

Wheel base 2395



252




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38









3330 1295 2035

3406 1295 2111

3391 1295 2096

3525 1295 2230

3555 1295 2260

3451 1295 2156

3480 1295 2185

Ballast weights-front bottom ballast weight 1+3 120 (1x30 + 3x30) front ballast weight 1+2 90 (1x30 + 2x30)

Ballast weights-rear 2+4 170 (2x25 + 4x30 - Z 8621) 2+6 230 (2x25 + 6x30 - Z 8621, Z 9621) 2+10 350 (2X25 + 10X30 - Z 9621)




253




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38



1850-200 3200-350 3500-350


5200-160 5500-140 5500-110

5500-160 5500-130 5500-100

5500-140 5500-120 5500-90

5430-140 5500-140 5500-100

5500-130 5500-110 5500-80

5500-140 5500-110 5500-90

5500-110 5500-90 5500-80



254





255



Tractor type Zetor 8641 Forterra turboZetor 9621 Forterra turbo

WEIGHT (kg)

Front tire 12,4R24

Rear tire 16,9R34 16,9R38 18,4R34 480/R78






1920

1967

1980


2775

2772

2768

2772

Height up to cab top 2659 2681 2688 2681



236

307

280

307


614-814

682-882

657-857

682-882


276

347

320

347


369

429

406

429

Height of PTO 611 671 648 671


1565

1565 - 1865


1500

1500-1800

1575

1575-1800

1500

1500-1800

1500

1500-1800



256




WEIGHT (kg)

Front tire 12,4R24

Rear tire 16,9R34 16,9R38 18,4R34 480/R78


Wheel base 2390

Height up to steering wheel top 1991 2010 1999 2010





Weight (kg) (tolerance & 2%)


3717 1582 2135

3802 1582 2220

3765 1582 2183

3837 1582 2255

Ballast weights-front bottom ballast weight 1+3 120 (1x30 + 3x30) front ballast weight 1+2 90 (1x30 + 2x30 - Z 8641) 1+5 180 (1x30 + 5x30) 1+7 240 (1x30 + 7x30 - Z 9641)

Ballast weights-rear 2+4 170 (2x25 + 4x30 Z 8641) 2+6 230 (2x25 + 6x30) 2+10 350 (2x25 + 10x30 Z 9641)

Ballast weight of front three point hitch 12 PCs (canister) 260 (support 8 + 12x21)

Water in rear tires 2x250 2x260 2x340 2x335



257




WEIGHT (kg)

Front tire 12,4R24

Rear tire 16,9R34 16,9R38 18,4R34 480/R78


Front driving axle 40 km/h 30 km/h 20 km/h 8 km/h

2350-160 2500-130 3600-160 4100-160

Rear axle 40 km/h 30 km/h 20 km/h 8 km/h

4860-160 5200-160 5500-140 5800-120

5150-160 5500-160 5500-130 5800-110

5150-140 5500-140 5500-120 5800-90

5150-140 5500-140 5500-110 5800-90



258




WEIGHT (kg)

Front tire 12,4 - 28, 10PR

Rear tire 16,9R38 18,4R38 18,4 - 38 480/70R38 520/70R38






1967

1967

1980

2020


2818

2797

2797

2818

2797

Height up to cab top 2705 2685 2685 2705 2685



288

270

270

288

270


665-865

647-847

647-847

665-865

647-847


328

310

310

328

310


420

402

402

420

402

Height of PTO 662 644 644 662 644


1715

1715-1865

1710

1710-1860

1710

1710-1860

1715

1715-1865

1710

1710-1860 Rear wheel tread- standard- for agricultural operation - adjustable

1575

1575-1800

1725

1575-1800

1725

1575-1800

1575

1575-1800

1725

1575-1800



259




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 18,4 - 38 480/70R38 520/70R38


Wheel base 2390

Height up to steering wheel top 2037 2016 2016 2037 2016







3937 1717 2220

4072 1717 2355

4042 1717 2325

3972 1717 2255

3997 1717 2280

Ballast weights-front bottom ballast weight 1+3 120 (1x30 + 3x30) front ballast weight 1+2 90 (1x30 + 2x30 - only Z 8641) 1+5 180 (1x30 + 5x30) 1+7 240 (1x30 + 7x30 - only Z 9641)

Ballast weights-rear 2+4 170 (2x25 + 4x30) 2+6 230 (2x25 + 6x30) 2+10 350 (2x25 + 10x30 - only Z 9641)


Water in rear tires 2x260 2x385 2x385 2x335 2x390



260




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 18,4 - 38 480/70R38 520/70R38



2350-220 2500-170 3600-240 4600-290


5150-160 5500-160 5500-130 5800-110

5150-130 5500-130 5500-110 5800-80

-

5500-140 5500-140 5800-110

5150-140 5500-140 5500-110 5800-90

-

5500-110 5500-90 5800-80



261




WEIGHT (kg)

Front tire 13,6R24

Rear tire 16,9R34 16,9R38 18,4R34 18,4R38 18,4-38 480/70R38 520/70R38






1920

1967

1967

1967

1980

2020


2790

2788

2779

2790

2790

2788

2790




240

303

279

272

272

303

272


612-812

680-880

656-856

649-849

649-849

680-880

649-849


280

343

319

312

312

343

312


370

428

406

403

403

428

403

Height of PTO 612 670 648 650 650 670 650


1565

1565-1865

1630

1630-1850

1630

1630-1850

1710

1710-1860

1710

1710-1860

1630

1630-1850

1710

1710-1860


1500

1500-1800

1575

1575-1800

1500

1500-1800

1725

1575-1800

1725

1575-1800

1575

1575-1800

1725

1575-1800

Wheel base 2390



262




WEIGHT (kg)

Front tire 13,6R24

Rear tire 16,9R34 16,9R38 18,4R34 18,4R38 18,4-38 480/70R38 520/70R38









3857 1722 2135

3942 1722 2220

3905 1722 2183

4077 1722 2355

4047 1722 2325

3977 1722 2255

4002 1722 2280


Ballast weights-rear 2+4 170 (2x25 + 4x30) 2+6 230 (2x25 + 6x30) 2+10 350 (2x25 + 10x30 only - Z 9641)





263




WEIGHT (kg)

Front tire 13,6R24

Rear tire 16,9R34 16,9R38 18,4R34 18,4R38 18,4-38 480/70R38 520/70R38



2350-160 2500-120 3600-140 4350-160


4860-160 5200-160 5500-140 5800-120

5150-160 5500-160 5500-130 5800-110

5150-140 5500-140 5500-120 5800-90

5150-130 5500-130 5500-110 5800-80

-

5500-140 5500-140 5800-110

5150-140 5500-140 5500-110 5800-90

5150-130 5500-110 5500-90 5800-80



264




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 18,4 - 38 480/70R38 520/70R38





Width over tires with tread 1500 mm 1929 1967 1967 1980 2020


2802

2797

2797

2802

2797




296

270

270

296

270


673-873

647-847

647-847

673-873

647-847


336

310

310

336

310


424

402

402

424

402

Height of PTO 666 644 644 666 644


1710

1710-1860

1710

1710-1860

1710

1710-1860

1710

1710-1860

1710

1710-1860


1575

1575-1800

1725

1575-1800

1725

1575-1800

1575

1575-1800

1725

1575-1800



265




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 18,4 - 38 480/70R38 520/70R38


Wheel base 2390








3963 1743 2220

4098 1743 2355

4068 1743 2325

3998 1743 2255

4031 1743 2288







266




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 18,4 - 38 480/70R38 520/70R38



2350-140 2500-100 3600-150 4600-190


5150-160 5500-160 5500-130 5800-110

5150-130 5500-130 5500-110 5800-80

-

5500-140 5500-140 5800-110

5150-140 5500-140 5500-110 5800-90

5150-130 5500-110 5500-90 5800-80



267




WEIGHT (kg)

Front tire 380/70R24

Rear tire 16,9R34 16,9R38 18,4R34 18,4R38 18,4-38 480/70R38 520/70R38





Width over tires with tread 1500 mm 1929 1929 1967 1967 1967 1980 2020


2775

2772

2768

2775

2775

2772

2775




236

307

280

280

280

307

280


614-814

682-882

657-857

665-865

665-865

682-882

665-865


276

347

320

320

320

347

320


369

429

406

402

402

429

402

Height of PTO 611 671 648 654 654 671 654


1565

1565-1865

1565

1565-1865

1565

1565-1865

1710

1710-1860

1710

1710-1860

1565

1565-1865

1710

1710-1860


1500

1500-1800

1500

1500-1800

1500

1500-1800

1725

1575-1800

1725

1575-1800

1500

1500-1800

1725

1575-1800

Wheel base 2390



268




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 18,4R38 18,4-38 480/70R38 520/70R38









3857 1722 2135

3942 1722 2220

3905 1722 2183

4077 1722 2355

4047 1722 2325

3977 1722 2255

4002 1722 2280


Ballast weights-rear 2+4 170 (2x25 + 4x30) 2+6 230 (2x25 + 6x30) 2+10 350 (2x25 + 10x30 only - Z 9641)





269




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 18,4R38 18,4-38 480/70R38 520/70R38



2350-150 2500-100 3600-120 4600-150


4860-160 5200-160 5500-140 5800-120

5150-160 5500-160 5500-130 5800-110

5150-140 5500-140 5500-120 5800-90

5150-130 5500-130 5500-110 5800-80

-

5500-140 5500-140 5800-110

5150-140 5500-140 5500-110 5800-90

5150-130 5500-110 5500-90 5800-80



270




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 18,4 - 38 480/70R38 520/70R38







2802

2797

2797

2802

2797




296

270

270

296

270


673-873

647-847

647-847

673-873

647-847


336

310

310

336

310


424

402

402

424

402

Height of PTO 666 644 644 666 644


1710

1710-1860

1710

1710-1860

1710

1710-1860

1710

1710-1860

1710

1710-1860


1575

1575-1800

1725

1575-1800

1725

1575-1800

1575

1575-1800

1725

1575-1800



271




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 18,4 - 38 480/70R38 520/70R38


Wheel base 2390






Weight (kg) (tolerance & 2%)


3960 1740 2220

4095 1740 2355

4065 1740 2325

3995 1740 2255

4028 1740 2288







272




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 18,4 - 38 480/70R38 520/70R38



2350-110 2500-80 3600-100 4600-120


5150-160 5500-160 5500-130 5800-110

5150-130 5500-130 5500-110 5800-80

-

5500-140 5500-140 5800-110

5150-140 5500-140 5500-110 5800-90

5150-130 5500-110 5500-90 5800-80



273




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 480/70R38






1929

1967

1980


2772

2775

2768

2775


Ground clearance under front axle housing 430 430 430 430


236

307

280

307


614-814

682-882

657-857

682-882


276

347

320

347


369

429

406

429

Height of PTO 611 671 648 671


1565

1565-1865

1630

1630-1850

1630

1630-1850

1630

1630-1850


1500

1500-1800

1575

1575-1800

1500

1500-1800

1575

1575-1800



274




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 480/70R38


Wheel base 2390








3852 1717 2135

3937 1717 2220

4072 1717 2355

3972 1717 2255


Ballast weights-rear 2+4 170 (2x25 + 4x30) 2+6 230 (2x25 + 6x30) 2+10 350 (2x25 + 10x30 only Z 9641)





275




WEIGHT (kg)


Rear tire 16,9R34 16,9R38 18,4R34 480/70R38


Front driving axle 30 km/h 20 km/h 8 km/h

2500-190 3500-275 4300-275


5200-160 5500-140 5800-120

5500-160 5500-130 5800-110

5500-140 5500-120 5800-90

5500-140 5500-110 5800-90



276





277


Tractor type Zetor 10641 Forterra turbo

WEIGHT (kg)


Rear tire 16,9R38 18,4-38 18,4R38 480/70R38 520/70R38







2818

2797

2797

2818

2797


Ground clearance under front axle housing 491 469 491 491 491


288

270

270

288

270


665-865

647-847

647-847

665-865

647-847


328

310

310

328

310


420

402

402

420

402

Height of PTO 662 644 644 662 644


1715

1715-1865

1710

1710-1860

1710

1710-1860

1715

1715-1865

1710

1710-1860


1575

1575-1800

1725

1575-1800

1725

1575-1800

1575

1575-1800

1725

1575-1800



278




WEIGHT (kg)


Rear tire 16,9R38 18,4-38 18,4R38 480/70R38 520/70R38


Wheel base 2390








4037 1717 2320

4097 1717 2380

4169 1717 2452

4067 1717 2350

4102 1717 2385



Ballast weight of front three point hitch 12 PCs (canister) 260 (support 8 + 12x21) 16 PCs (rounded) 456 (support 8 + 16x28)




279




WEIGHT (kg)


Rear tire 16,9R38 18,4-38 18,4R38 480/70R38 520/70R38



2350-220 2500-270 3600-240 4600-290


5150-160 5500-160 5500-130 5800-110

4340-140 5500-140 5500-140 5800-110

5150-130 5500-130 5500-110 5800-80

5150-140 5500-140 5500-110 5800-90

5150-130 5500-130 5500-90 5800-80



280




WEIGHT (kg)

Front tire 13,6R24

Rear tire 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38





Width over tires with tread 1500 mm 1929 1967 1967 1967 1980 2020


2788

2779

2790

2790

2788

2790

Height up to cab top 2690 2676 2787 2789 2690 2787



303

279

272

272

303

272


680-880

656-856

649-849

649-849

680-880

649-849


343

319

312

312

343

312


428

406

403

403

428

403

Height of PTO 670 648 650 650 670 650


1630

1630-1850

1630

1630-1850

1710

1710-1860

1710

1710-1860

1630

1630-1850

1710

1710-1860


1575

1575-1800

1500

1500-1800

1725

1575-1800

1725

1575-1800

1575

1575-1800

1725

1575-1800

Wheel base 2390



281




WEIGHT (kg)

Front tire 13,6R24

Rear tire 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38


Height up to steering wheel top 2020 2007 2015 2015 2020 2015







4042 1722 2320

4155 1722 2433

4147 1722 2425

4174 1722 2452

4072 1722 2350

4107 1722 2385

Ballast weights-front bottom ballast weight 1+3 120 (1x30 + 3x30) front ballast weight 1+2 90 (1x30 + 2x30) 1+5 180 (1x30 + 5x30) 1+7 240 (1x30 + 7x30)

Ballast weights-rear 2+4 170 (2x25 + 4x30) 2+6 230 (2x25 + 6x30) 2+10 350 (2x25 + 10x30)


Water in rear tires 2x260 2x340 2x385 2x385 2x335 2x390



282




WEIGHT (kg)

Front tire 13,6R24

Rear tire 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38



2350-160 2500-120 3600-140 4350-160


5150-160 5500-160 5500-130 5800-110

5150-140 5500-140 5500-120 5800-90

4340-140 5500-140 5500-120 5800-110

5150-130 5500-130 5500-110 5800-80

5150-140 5500-140 5500-110 5800-90

5150-130 5500-130 5500-90 5800-80



283




WEIGHT (kg)


Rear tire 16,9R38 18,4-38 18,4R38 480/70R38 520/70R38







2802

2797

2797

2802

2797




296

270

270

296

270


673-873

647-847

647-847

673-873

647-847


336

310

310

336

310


424

402

402

424

402

Height of PTO 666 644 644 666 644


1710

1710-1860


1575

1575-1800

1725

1575-1800

1725

1575-1800

1575

1575-1800

1725

1575-1800



284




WEIGHT (kg)


Rear tire 16,9R38 18,4-38 18,4R38 480/70R38 520/70R38


Wheel base 2390








4063 1743 2320

4168 1743 2425

4195 1743 2452

4093 1743 2350

4128 1743 2385







285




WEIGHT (kg)


Rear tire 16,9R38 18,4-38 18,4R38 480/70R38 520/70R38



2350-140 2500-100 3600-150 4600-190


5150-160 5500-160 5500-130 5800-110

4340-140 5500-140 5500-140 5800-110

5150-130 5500-130 5500-110 5800-80

5150-140 5500-140 5500-110 5800-90

5150-130 5500-130 5500-90 5800-80



286




WEIGHT (kg)


Rear tire 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38





Width over tires with tread 1500 mm 1929 1967 1967 1967 1980 2020


2788

2779

2775

2775

2788

2775

Height up to cab top 2690 2676 2673 2673 2690 2673

Ground clearance under front axle housing 430 430 430 430 430 430


303

279

280

280

303

280


680-880

656-856

665-865

665-865

680-880

665-865


343

319

320

320

343

320


428

406

402

402

428

402

Height of PTO 670 648 654 654 670 654


1630

1630-1850

1630

1630-1850

1710

1710-1860

1710

1710-1860

1630

1630-1850

1710

1710-1860


1575

1575-1800

1500

1500-1800

1725

1575-1800

1725

1575-1800

1575

1575-1800

1725

1575-1800

Wheel base 2390



287




WEIGHT (kg)


Rear tire 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38


Height up to steering wheel top 2020 2007 2008 2008 2020 2008







4042 1722 2320

4155 1722 2433

4147 1722 2425

4174 1722 2452

4072 1722 2350

4107 1722 2385




Water in rear tires 2x260 2x340 2x385 2x385 2x335 2x390



288




WEIGHT (kg)


Rear tire 16,9R38 18,4R34 18,4-38 18,4R38 480/70R38 520/70R38



2350-150 2500-100 3600-120 4600-150


5150-160 5500-160 5500-130 5800-110

5150-140 5500-140 5500-120 5800-90

4340-140 5500-140 5500-140 5800-110

5150-130 5500-130 5500-110 5800-80

5150-140 5500-140 5500-110 5800-90

5150-130 5500-130 5500-90 5800-80



289




WEIGHT (kg)


Rear tire 16,9R38 18,4-38 18,4R38 480/70R38 520/70R38






1967

1967

1980

2020


2802

2797

2797

2802

2797




296

270

270

296

270


673-873

647-847

647-847

673-873

647-847


336

310

310

336

310


424

402

402

424

402

Height of PTO 666 644 644 666 644


1710

1710-1860


1575

1575-1800

1725

1575-1800

1725

1575-1800

1575

1575-1800

1725

1575-1800



290




WEIGHT (kg)


Rear tire 16,9R38 18,4-38 18,4R38 480/70R38 520/70R38


Wheel base 2390








4060 1740 2320

4165 1740 2425

4192 1740 2452

4090 1740 2350

4125 1740 2385







291




WEIGHT (kg)


Rear tire 16,9R38 18,4-38 18,4R38 480/70R38 520/70R38



2350-110 2500-100 3600-100 4600-120


5150-160 5500-160 5500-130 5800-110

4340-140 5500-140 5500-140 5800-110

5150-130 5500-130 5500-110 5800-80

5150-140 5500-140 5500-110 5800-90

5150-130 5500-130 5500-90 5800-80



292

ZETOR 11641 FORTERRA



293



Tractor type 7

WEIGHT (kg)

Front tire 13,6R24

Rear tire 16,9R38 18,4R38 480/70R38 520/70R38





Width over tires with tread 1500 mm 1929 1967 1980 2020


2814

2820

2814

2820




309

348

309

348


685-885

723-923

685-885

723-923


349

388

349

388


433

467

433

467

Height of PTO 675 709 675 709


1700

1630-1850


1725

1575-1800

1725

1725-1800

1725

1575-1800

1725

1725-1800



294



Tractor type Zetor 11641 Forterra

WEIGHT (kg)

Front tire 13,6R24

Rear tire 16,9R38 18,4R38 480/70R38 520/70R38


Wheel base 2648








4310 1750 2560

4427 1750 2677

4338 1750 2588

4374 1750 2624

Ballast weights-front bottom ballast weight 2 PCs 96 (2x48) front ballast weight support + 14 PCs 619 (support 45 + 14x40)


Ballast weight of front three point hitch 16 PCs (rounded) 456 (support 8 + 16x28)




295




WEIGHT (kg)

Front tire 13,6R24

Rear tire 16,9R38 18,4R38 480/70R38 520/70R38



3000-160 3000-160 3600-140 4350-160


5150-160 5500-160 5500-130 6000-110

5500-150 5500-150 5500-110 6000-90

5500-160 5500-160 5500-110 6000-90

5500-120 5500-120 5500-90 5800-80



296




WEIGHT (kg)

Front tire 14,9R24

Rear tire 16,9R38 18,4R38 480/70R38 520/70R38







2830

2836

2830

2836




302

341

302

341


679-879

717-917

679-879

717-917


342

381

342

381


429

463

429

463

Height of PTO 671 705 671 705


1710

1710-1860


1725

1575-1800

1725

1725-1800

1725

1575-1800

1725

1725-1800



297




WEIGHT (kg)

Front tire 14,9R24

Rear tire 16,9R38 18,4R38 480/70R38 520/70R38


Wheel base 2648








4331 1771 2560

4448 1771 2677

4359 1771 2588

4395 1771 2624







298




WEIGHT (kg)

Front tire 14,9R24

Rear tire 16,9R38 18,4R38 480/70R38 520/70R38



3000-140 3400-160 3600-150 5100-160


5150-160 5500-160 5500-130 6000-110

5500-150 5500-150 5500-110 6000-90

5500-160 5500-160 5500-110 6000-90

5500-120 5500-120 5500-90 6000-80



299




WEIGHT (kg)


Rear tire 16,9R38 18,4R34 18,4R38 480/70R38 520/70R38







2814

2810

2820

2814

2820




309

283

348

309

348


685-885

660-860

723-923

685-885

723-923


349

323

388

349

388


433

410

467

433

467

Height of PTO 675 652 709 675 709


1700

1630-1850


1725

1575-1800

1725

1500-1800

1725

1725-1800

1575

1575-1800

1725

1725-1800



300




WEIGHT (kg)


Rear tire 16,9R38 18,4R34 18,4R38 480/70R38 520/70R38


Wheel base 2648








4310 1750 2560

4402 1750 2652

4427 1750 2677

4338 1750 2588

4374 1750 2624







301




WEIGHT (kg)


Rear tire 16,9R38 18,4R34 18,4R38 480/70R38 520/70R38



3000-130 3400-160 3600-120 5000-160


5150-160 5500-160 5500-130 6000-110

5500-160 5500-160 5500-120 6000-100

5500-150 5500-150 5500-110 6000-90

5500-160 5500-160 5500-110 6000-90

5500-120 5500-120 5500-90 6000-80



302




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 480/70R38 520/70R38







2830

2836

2830

2836




302

341

302

341


679-879

717-917

679-879

717-917


342

381

342

381


429

463

429

463

Height of PTO 671 705 671 705


1710

1710-1860


1725

1575-1800

1725

1725-1800

1725

1575-1800

1725

1725-1800



303




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 480/70R38 520/70R38


Wheel base 2648








4327 1767 2560

4444 1767 2677

4355 1767 2588

4391 1767 2624







304




WEIGHT (kg)


Rear tire 16,9R38 18,4R38 480/70R38 520/70R38



3000-120 3400-130 3600-100 5200-140


5150-160 5500-160 5500-130 6000-110

5500-150 5500-150 5500-110 6000-90

5500-160 5500-160 5500-110 6000-90

5500-120 5500-120 5500-90 6000-80



305


Front tire size Tractor type

Z 8621 Z 8641 Z 9621 Z 9641 Z 10641 Z 11641

2WD tractor

7,50-20 X ◊ - X ◊ - - - 9,00-16 X - X ◊ - - - 10,00-16 X* - X* - - -

4WD tractor

12,4R24 - X* - X* - - 12,4-24 - X • - X • - -

12,4-28, 10PR - X - X X* - 13,6R24 - X - X X X ◊ 14,9-24 - X - X X -

380/70R24 - X - X X X 420/70R24 - X - X X X 14,9R24 - - - - - X

Rear tire size Tractor type

Z 8621 Z 8641 Z 9621 Z 9641 Z 10641 Z 11641

16,9R34 X ◊ X ◊ X ◊ X ◊ - - 16,9R38 X* X* X* X* X* X ◊◊

18,4R34 X X X X X X 18,4-38 X X X X X* ◊◊ -

18,4-R38 X X X X X X* 480/70R38 X X X X X X 520/70R38 X X X X X X

* - standard tires

◊ - limited load

◊◊ - limited load for 40 km/h • - assembly is not possible if tractor equipped with transmission for 40 km/h




306

FORCE, POWER, FUEL CONSUMPTION Tractor type

FORCE (kN) Z 8621 Z 8641 Z 9621 Z 9641 Z 10641 Z 11641

Max. pulling force in swinging drawbar- measured on concrete, tractor shipping weight with max. ballast

weight, slippage 15%, with driver

20,73

31,96

21,67

34,30

37,26

46,80

Max. pulling force in pick up hitch- measured in middle position of hitch, on concrete, tractor shipping

weight with max. ballast weight, with water in tires, with driver

27,49

35,64

30,16

37,85

42,31

51

Lifting force in lower draft link ends of three point hitch- within whole lifting range at pressure 16,2 MPa with lift assist

cylinder- within whole lifting range at max. pressure with lift assist cylinder- maximal at max. pressure with lift assist cylinder

40,5 48,4 58,5

Lifting force in lower draft link ends of font three point hitch- within whole lifting range at max. pressure- maximal at max. pressure

11

14,5

24

26,5

POWER AND FUEL CONSUMPTION PTO power- at engine rated speed and shifted 1000 min

-1 PTO (kW)

53

53

59

59

67

70

Specific fuel consumption- at above mentioned power (g.kW

-1.h

-1“ 2%) 280 280 277 277 274 284



307


TRACTOR SPEED Z 8621 - Z 10641 FORTERRA TURBO (30km/h)

Tractor equipped with four speed transmission with speed 30km/h, reduction gear, three stage Hi-Lo (torque multiplier),reversor a front driving axle (24 forward speed 18 reverse speed)

FORWARD SPEED REVERSE SPEED

Rear tiresISO radius

Total gearratio

16,9-38

(795 mm)

18,4-38

(820 mm)


Total gearratio

16,9-38

(795 mm)

18,4-38

(820 mm)

H 21,969 30,0 30,9 H 27,200 24,2 25,04 Hi M 25,401 26,0 26,8 3 Hi M 31,449 21,0 21,6

L 29,405 22,4 23,1 L 36,406 18,1 18,7

H 31,450 21,0 21,6 H 44,189 14,9 15,43 Hi M 36,363 18,1 18,7 2Hi M 51,092 12,9 13,3

L 42,095 15,7 16,2 L 59,146 11,1 11,5

H 51,094 12,9 13,3 H 63,606 10,4 10,72 Hi M 59,076 11,2 11,5 1Hi M 73,542 9,0 9,2

L 68,387 9,6 9,9 L 85,134 7,7 8,0

H 73,545 9,0 9,2 H 112,457 5,9 6,01 Hi M 85,033 7,8 8,0 3 Lo M 130,025 5,1 5,2

L 98,437 6,7 6,9 L 150,520 4,4 4,5

H 90,831 7,3 7,5 H 182,699 3,6 3,74 Lo M 105,020 6,3 6,5 2 Lo M 211,239 3,1 3,2

L 121,573 5,4 5,6 L 244,536 2,7 2,8

H 130,029 5,1 5,2 H 262,977 2,5 2,63 Lo M 150,341 4,4 4,5 1 Lo M 304,057 2,2 2,2

L 174,038 3,8 3,9 L 351,984 1,9 1,9

H 211,246 3,1 3,22 Lo M 244,245 2,7 2,8 Forth speed can not be shifted with reversor!

L 282,744 2,3 2,4

H 304,067 2,2 2,21Lo M 351,566 1,9 1,9

L 406,981 1,6 1,7



308


TRACTOR SPEED Z 8621 - Z 10641 FORTERRA TURBO (30km/h)




Total gearratio

16,9-38

(795 mm)

18,4-38

(820 mm)


Total gearratio

16,9-38

(795 mm)

18,4-38

(820 mm)

H 19,787 33,3 34,4 H 24,498 26,9 27,84 Hi M 22,878 28,8 29,7 3 Hi M 28,325 23,3 24,0

L 26,484 24,9 25,7 L 32,789 20,1 20,7

H 28,326 23,3 24,0 H 39,799 16,6 17,13 Hi M 32,750 20,1 20,8 2 Hi M 46,017 14,3 14,8

L 37,913 17,4 17,9 L 53,270 12,4 12,8

H 46,018 14,3 14,8 H 57,287 11,5 11,92 Hi M 53,207 12,4 12,8 1 Hi M 66,236 10,0 10,3

L 61,593 10,7 11,0 L 76,677 8,60 8,87

H 66,238 10,0 10,3 H 101,285 6,51 6,711 Hi M 76,586 8,61 8,88 3 Lo M 117,107 5,63 5,81

L 88,657 7,44 7,67 L 135,566 4,86 5,02

H 81,807 8,06 8,31 H 164,549 4,01 4,134 Lo M 94,586 6,97 7,19 2 Lo M 190,253 3,46 3,57

L 109,496 6,02 6,21 L 220,242 2,99 3,09

H 117,111 5,63 5,81 H 236,851 2,78 2,873 Lo M 135,405 4,87 5,02 1 Lo M 273,850 2,41 2,48

L 156,748 4,21 4,34 L 317,016 2,08 2,14

H 190,259 3,46 3,572 Lo M 219,981 3,00 3,09 Forth speed can not be shifted with reversor

L 254,655 2,59 2,67

H 273,859 2,41 2,481 Lo M 316,639 2,08 2,15

L 366,550 1,80 1,85



309


TRACTOR SPEED Z 11641 FORTERRA (30km/h)




Total gearratio

16,9-38

(795 mm)

18,4-38

(820 mm)


Total gearratio

16,9-38

(795 mm)

18,4-38

(820 mm)

H 24,733 28,5 29,4 H 30,622 23,0 23,74 Hi M 28,597 24,6 25,4 3 Hi M 35,406 19,9 20,5

L 33,105 21,3 21,9 L 40,987 17,2 17,7

H 35,407 19,9 20,5 H 49,749 14,2 14,63 Hi M 40,938 17,2 17,7 2Hi M 57,521 12,2 12,6

L 47,391 14,9 15,3 L 66,587 10,6 10,9

H 57,523 12,2 12,6 H 71,609 9,83 10,12 Hi M 66,508 10,6 10,9 1Hi M 82,795 8,50 8,77

L 76,992 9,15 9,43 L 95,846 7,35 7,58

H 82,798 8,50 8,77 H 126,606 5,56 5,741 Hi M 95,732 7,36 7,59 3 Lo M 146,384 4,81 4,96

L 110,822 6,35 6,55 L 169,458 4,16 4,29

H 102,259 6,89 7,10 H 205,686 3,42 3,534 Lo M 118,233 5,96 6,14 2 Lo M 237,817 2,96 3,05

L 136,869 5,14 5,31 L 275,302 2,56 2,64

H 146,388 4,81 4,96 H 296,063 2,38 2,453 Lo M 169,256 4,16 4,29 1 Lo M 342,312 2,06 2,12

L 195,935 3,59 3,71 L 396,270 1,78 1,83


L 318,318 2,21 2,28

H 342,323 2,06 2,121Lo M 395,799 1,78 1,83

L 458,187 1,54 1,59



310


TRACTOR SPEED Z 11641 FORTERRA (40km/h)




Total gearratio

16,9-38

(795 mm)

18,4-38

(820 mm)


Total gearratio

16,9-38

(795 mm)

18,4-38

(820 mm)

H 19,787 35,6 36,7 H 24,498 28,7 29,64 Hi M 22,878 30,8 31,7 3 Hi M 28,325 24,9 25,6

L 26,484 26,6 27,4 L 32,789 21,5 22,2

H 28,326 24,9 25,6 H 39,799 17,7 18,23 Hi M 32,750 21,5 22,2 2 Hi M 46,017 15,3 15,8

L 37,913 18,6 19,2 L 53,270 13,2 13,6

H 46,018 15,3 15,8 H 57,287 12,3 12,72 Hi M 53,207 13,2 13,7 1 Hi M 66,236 10,6 11,0

L 61,593 11,4 11,8 L 76,677 9,18 9,47

H 66,238 10,6 11,0 H 101,285 6,95 7,171 Hi M 76,586 9,19 9,48 3 Lo M 117,107 6,01 6,20

L 88,657 7,94 8,19 L 135,566 5,19 5,36

H 81,807 8,61 8,88 H 164,549 4,28 4,414 Lo M 94,586 7,44 7,68 2 Lo M 190,253 3,70 3,82

L 109,496 6,43 6,63 L 220,242 3,20 3,30

H 117,111 6,01 6,20 H 236,851 2,97 3,073 Lo M 135,405 5,20 5,36 1Lo M 273,850 2,57 2,65

L 156,748 4,49 4,63 L 317,016 2,22 2,29


L 254,655 2,77 2,85

H 273,859 2,57 2,651Lo M 316,639 2,22 2,29

L 366,550 1,92 1,98



311


REAR INDEPENDENT PTO

Gear ratio PTO shaft speed/engine speed PTO shaft speed/engine speed

Z 8621-10641 Z 116413,54 540/1913 621/2200 663/23501,95 1000/1950 1128/2200 1203/2350

FRONT INDEPENDENT PTO

Gear ratio PTO shaft speed/engine speed PTO shaft speed/engine speed

Z 8621-10641 Z 116411,95 1000/1955 1126/2200 1202/2350



312

NOTE



313

NOTE



314

NOTE



315

Operator’s manual

Z 8621, 8641 Forterra turbo

Z 9621, 9641 Forterra turbo

Z 10641 Forterra turboZ 11641 Forterra

Edition: I-1000-1998Number of publication: 22.22.12.324Zetor a.s.Documentation and propagation dept.Trnkova 111632 00



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