IH-S-B275 D

IInntteerr nnaattiioonnaallHHaarr vveesstteerr

Service ManualB-275Diesel

THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF INTERNATIONAL HARVESTER OR IT’S SUCCESSORS. INTERNATIONAL HARVESTER AND IT’S SUCCESSORS

ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.

TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.

Serv

ice

Man

ual

SERVICE MANUAL

8-275 DIESEL

Form G55-1243

International Tractors

General Description and Specifications

Tractor Series: 8-275

File in Tractor Service Manual

CONTENTS

General Description .............................•............................. 2

Spec ifications ~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10 Engine .. . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .... ......................................................................................... 10 Electrical System .......•....••..•...............•.•...•..•.......•.....•.. 19 Fuel System .............. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .... 21 Cooling System ......••....•..............•.••...•..................•...•.. 22 Hydraulic System .................................................................................................................... 24 Engine Clutch ................................................... '. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .... 25 Transrnis sion .. .. .. .. .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .... 26 Power Take -Off ............................................................................................................ .. .. .. .... 28 Differential .............................................................................................................................. 30 eha s sis .. .. .. .. .. .. . . . . . . . . . . . .. . .... 0 • 0 ••• 0 •••••••••••••••••••• 0 • • • • • • • • • • • • • •• 31 Brake s .... 0 • • • • • • • • • • • • • • • • • ••••••••••• ~ .••••••••••••••••• 0' • • • • • • • • • • • • • • •• 34

GENERAL DESCRIPTION

The B-275 Tractor is powered by a di­rect starting diesel engine which develops 35 flywheel horsepower (stripped) at 1875 rpm. It is equipped with electric glow plugs for ease in cold starting. A heavy duty dual clutch provides constant-running PTO permitting the tractor to be stopped without stopping or reducing the output of the PTO. The transmission provides eight forward and two reverse speeds. The main units and systems of the tractor are the diesel engine, electrical system, cool­ing system, hydraulic system, engine clutch, transmission, power take-off, dif­ferential, chassis (which includes the steering mechanism, wheels, and axles), and the brake s.

2

Engine

The International Model BD-l44-A die­sel engine powering the McCormick Inter­national B-275 Tractor is of the 4-cylinder, 4-cycle valve-In-head type with separate pre-combustion chambers. This type of engine depends upon the use of a high com­pression ratio to generate sufficient heat during the compression stroke to ignite the fuel charge.

During the induction stroke, pure air only is introduced into the cylinder. The temperature of this air is raised on the

lIIust. 1. Right side view of tractor.

compression stroke to approximately llOOoF. This temperature is sufficient to ignite the fuel, which is injected under great pressure toward the end of the com­pres sion stroke. The power stroke and exhaust stroke follow to complete the cy­cle,

It is upon the ability of the injection pump to meter the exact amount of fuel needed to match the power required and upon the ability of the injection nozzles to atomize the fuel to form a fine spray that the outstanding fuel economy of the diesel engine depends.

Electrical System

The tractor electrical system consists of the battery, charging system, cold start­ing system, starter motor system, and the

3

lighting system. Two batteries are con­nected in series to form a l2-volt system. The generator, voltage regulator J and cut­out relay function together to maintain the charge of the batteries at a constant level. The cold starting system utilizes glow plugs to pre-heat the pre-combustion chamber walls and air to aid in vaporizing the fuel and to raise the temperature of the combustion area in general. This as­si sts in cold starting.

The starter motor is a four-brush, four­pole series wound type intended for use on diesel engines. The starter pinion is of the pre-engaged type drive, giving a posi­tive engagement between the pinion and the flywheel ring gear before the torque is de­veloped by the motor armature. Also in­corporated is a dual purpose clutch, which protects the starter motor from overload in the event of backfire and also prevents the motor from being driven by the engine flywheel.

Form GSS-1246

I nternationa I Tractors

Cooling System

Tractor Series: B-275

File in Tractor Service Manual

CONTENTS

Specifications 3

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Fan and Fan Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Water Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Heat Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Trouble Shooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Cooling System Preventive Maintenance ........................................... . Radiator ................................................................... . Fan and Fan Belt ........................................................... .

Cooling System Service ......................................................... . Radiator Fan and Fan Belt

7 7 7

8 8 9

Water Pump ................................................................. 10 Thermostat .................................................................. 15

2

Form GSS-1244

International Tractors

Diesel Engine

Tractor Series: B-275

file in Tractor Service Manual

CONTENTS

Specifications . . . . . . . . . . . . . . . . . . . . . . . 3

General Description . . . . . . . . . . . . . . . . . 8 General . . . . . . . . . . . . . . . . . . . . . . . . . 8 Cylinder Head and Valves . . . . . . . . . 9 Connecting Rods, Pistons, and

Piston Rings . . . . . . . . . . . . . . . . . . . . 13 Lubricating Oil Pump . . . . . . . . . . . . 14 Timing Gears and Front Cover ..... 14 Camshaft ........................ 15 Crankshaft and Main Bearings ...... 16 Flywheel . . . . . . . . . . . . . . . . . . . . . . . . 17

Trouble Shooting C hart . . . . . . . . . . . . . . 1 7

Engine Removal . . . . . . . . . . . . . . . . . . . . 26

Cylinder Head and Valve Service . . . . . . 2 7 Removal of Cylinder Head ......... 27 Adjusting Valve Clearance ......... 28 Disassembly ..................... 28 Inspection . . . . . . . . . . . . . . . . . . . . . . . 31 Repair .......................... 33 Reassembly ..................... 34 Installation . . . . . . . . . . . . . . . . . . . . . . 36

Connecting Rod, Piston, and Ring Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Removal ........................ 37 Disassembly .................... 37 Inspection and Repair ............. 38 Reassembly ...................... 39 Installation ...................... 40

Crankcase and Cylinder Sleeve Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Removal of Cylinder Sleeves ....... 41

2

Inspection and Repair ............. 41 Installing Cylinder Sleeves . . . . . . . . 42 Removal of Heli-coil Inserts ....... 43 Installing Heli-coil Inserts ........ 43

Oil Pump Service Removal ......................... 45 Disassembly ................ , .... 45 Inspection and Repair . . . . . . . . . . . . . 45 Reassembly ...................... 46 Testing for Oil Leaks ............. 48 Installation . . . . . . . . . . . . . . . . . . . . . . 49

Timing Gears and Front Cover . . . . . . . 50 Removal ......................... 50 Inspection and Repair ........ ; . . . . 51 Installation . . . . . . . . . . . . . . . . . . . . . . 52

Camshaft Service . . . . . . . . . . . . . . . . . . . 5 3 Removal ......................... 53 Disassembly . . . . . . . . . . . . . . . . . . . . . 53 Inspection and Repair . . . . . . . . . . . . . 53 Reassembly . . . . . . . . . . . . . . . . . . . . . 54 Installation . . . . . . . . . . . . . . . . . . . . . 55

Crankshaft and Main Bearings

Removal ......................... 56 Inspection and Repair . . . . . . . . . . . . . 57 Installation . . . . . . . . . . . . . . . . . . . . . . 58

Flywheel . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1 Removal ......................... 61 Inspection and Repair . . . . . . . . . . . . . 61 Installation . . . . . . . . . . . . . . . . . . . . . . 61

-I I I

I I I // I -5635 I --1-'5645 I GRIND I

10 '375"

-I I-~ -'556"

EXHAUST ~~~N8D

must. 15. Dimensions of valve guides.

EX INT INT INT INT EX

T20-56

iIIust. 16. Valve guides assembled in cylinder head.

When replacing guides be certain that each gl,lide is inserted in its correct position. See Illusts. 15 and 16.

Intake and Exhaust Valves

Coat the valve sterns with engine oil and insert them from the bottom of the head. Each valve and its parts should be returned to the position from which it carne.

Place the valve spring onto the valve followed by the valve spring retainer cup. Compress the springs sufficiently to install the cup locks in the groove provided at the top of each valve stern.

Inj ection Nozzles

Install new pre-combustion chamber gaskets into the cylinder head and insert

35

T20-5"S

I I I ,/ I ·5635 I --1-'5645 : GRIND

I" INTAKE

10 '625'

'55ft '558

GRIND

the pre-combustion chambers, using a pre -combustion chamber aligning tool. Ensure that the pre-combustion chamber is positioned correctly in the cylinder head, otherwise the glow plug element may con­tact the sides of the chamber and result in the element being burned out. See Illust. 17.

must. 17. Using a precombustion chamber aligning tool.

Install the second set of gaskets and the pre-combustion chamber holders.

Place the nozzle assembly into position on the studs. Install the nuts and tighten them to the specified torque of 30 to 35 foot-pounds.

Assemble the glow plugs and connections.

Form GSS-1242

International Tractors

Fuel System

Tractor Series: 8 ... 275

File in Tractor' Service Manual

CONTENTS

Specifications .....

General Description. Fuel System Air Cleaner. Fuel Tank .. Water Trap. Fuel Filter .. Injection Nozzles Injection Pump and Governor Fuel Feed Pump (Primary)

3

4 4 4 5 6 6 6 7

10

Trouble Shooting Chart. . . . . . . . . .. 11

Fuel System Venting. . . 13

Checks and Adjustments 14 Injection Pump Timing 14 Governor Seal Testing. 16 Governor Adjustment 16 Excess Fuel Device 19 Altitude De - rating 19 Low Power Output . 20

Injection Nozzle Service 20 Removal. . . . . . . . . . 20 Testing Injection Nozzles. . . .. 21 Adjusting Nozzle Opening Pressure. 22 Disassembly. . . . . . 23 Cleaning. • . . . . . . . 23 Inspection and Repair 24 Reassembly. 25 Installation . . . . . . . • 26

Injection Pump and Governor Service. 26 Removal of Venturi Unit . . . . . . 26 Disassembly of Venturi. . . • . . . 27 Inspection and Repair of Venturi. 27 Removal of Injection Pump. . . . • 27

2

Disassembly of Injection Pump ... Inspection and Repair of

Injection Pump ..... . Disassembly of Governor Inspection of Governor .. •. Reassembly of Injection Pump

and Governor ............ . Injection Pump and Governor Cali

Calibration Specifications ..... Maximum Fuel Delivery Adjustment Lubrication of Injection Pump. Installation of Injection Pump.

Air Cleaner Service . . . . Removal •........ Inspection and Repair Installation ....

Fuel Tank Service Removal ••.... Inspection and Repair Installation . . . . .

Water Trap Service Removal ...... . Disassembly ...... . Inspection and Repair Reassembly Installation . . . . .

Fuel Filter Service. Removal ...... . Disassembly ..•. Inspection and Repair . Reassembly and Installation.

Fuel Feed Pump Service Disassembly ..... . Inspection and Repair Reassembly. Testing ......... .

27

34 34 35

35

36 36 36 36

37 37

37 37

38 39 39 39

40 40 40 40 40 40

41 41 41 41 41

42 42 42 43 43

c. A. V. Diesel Injection Pumps

Service Manual

GSS-1326B

I Reprinted I

CONTENTS

Introduction ......... ..................................................

S ·f· t· s peci lea Ion .................. . ......................................... .

General Information

Fuel System ............................................... .

Venting the Fuel System .......•...........................•......•....

Principles of Operation

General ............ .

End Plate Regulating Valve

Priming .. Regulating

Transf er Pump

. ............................................ .

Fuel Pump and Distribution

Fuel Pumping Distribution

Maximum Fuel Control

Governor Control Linkage ...............................................

Page

2

5,6

6,7 7

7,8

9 9

10

10,11 11

11,12

12

Trouble Shooting Chart .................................................. 13-17

Removal ............................... 17,18

Disassembly .................................................... . ......... 18-22

Repair Inspection and

End Plate ........................................................ Transf er Pump ......•..

Hydraulic Head and Rotor

Governor ..•...•..•..•..

Cam, Drive Shaft, Drive Hub and Pump Housing ...........................

23

23 23,24

24

24

Reasse mbly ............................................................... 24-29

3

Installation ........ .......... " .... " " ....... " ... " .. " .. " ... CI •• " " • " •••••••••••

Field Adiustments

Maximum Fuel .

Pump Timing to Engine

. ... " " . " .... " " .. " ... " " . " .. " ....... " " ............ "

Page

29

29,30

30

Effects of Pump Timing and Adiustments............................... 31

Engine-PTO Ratio Chart" ...... "." .. "." .. "" .... """""""",, .. CI •••• " " " •••• " • " 32

Testing

Transfer Pump Pressure

Feed Pump Static Pressure

Transfer Pump Vacuum " ...... " " " " . " ...... " .. " . " " .. " . " .. " " " " . " .. " " .. .

Nozzle Service

Principles of Operation

Testing

Opening Pressure Test .• Seat Leakage Test •••.•• Atomization and Dispersion. Back Leakage Test

Disassembly " " " " " " " ... " " . " " .. " .. " .. " " " " . " " .. " " " " " . " . " .. " . " " " . " " . " .. " " .. ... " . " . " . " . " " . " . " ..... " . " " ... " ... " " . " " . " " .. " " " Cleaning and Inspection

Reassembly .............•..

Adjustments and Final Testing

4

32,33 33

33

34,35

35 36 36 36

36

37-40 40

41

lIIust. 25. Timing ring location.

19. On pu:mps equipped with a ti:ming ring (Illust. 25). re:move the ti:ming ring fro:m the housing and discard it as it is not needed.

lIIust. 26. Removing hub securing screw.

20. Lock the drive hub with the ring co:m­pressor wrench and re:move the hub secur­ing screw (Illust. 26).

Illust.27. Removing governor weight assembly.

22

21. Re:move the governor weight asse:m­bly and splined shaft (Illust. 27).

IIlust. 28. Governor weight and drive shaft.

22. Re:move the O-ring fro:m its groove in the drive shaft. Pull the shaft out of the weight asse:mbly (Illust. 28).

Illust.29. Removing thrust sleeve and weights.

23. To re:move the weights fro:m their housing, lift out the thrust sleeve thereby allowing the weights to be re:moved with the thrust washer (Illust. 29).

24. Place a plastic or brass block on the flanged end of the housing, as shown in Illust. 30. Insert a dull screwdriver be­tween the lower face of the seal and the botto:m of the seal housing. Apply down­ward pressure on the screwdriver to pry out the oil seal. NOT E: The block keeps the screwdriver fro:m contacting the housing .

Form GSS-1245

I nternationa I Tractors

Engine Clutch

Tractor Series: B-275

File in Tractor Service Manual

CONTENTS

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Trouble Shooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Checks and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Clutch Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Removal .................................................................... 8

Disassembly ......................... , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Inspection and Repair ........................................................ 10

Reassembly .................................................................. 11

Installation .................................................................. 12

Evidences and Causes of Misalignment ......................................... 13

2

Form GSS-1250

International Tractors

Hydraulic Sy�tem

Tractor Series: B-275

File in Tractor Service Manual

CONTENTS

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Trouble Shooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Testing ........................................................................ 11

Hydraulic Pump Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Removal .................................................................... 12 Disassembly ............................................................... 12 Inspection and Repair ........................................................ 13 Reassembly ................................................................ 15 Installation ................................................................ 16

Selector Valve Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7 Removal ................................................................... 17 Disassembly ...................................................... , ......... 17 Reassembly ................................................................ 22 Installation ................................................................ 26

Reservoir ....................... -' ............................................. 27 Removal ................................................................... 27 Disassembly ............................................................... 27 Inspection .................................................................. 29 Reassembly ................................................................ 29 Installation ................................................................ 31

2

Form GSS-1247

International Tractors

Brakes

Tractor Series: B-275

CONTENTS

Specifications .................................................................. 3

General Description ............................................................ 3

Trouble Shooting Chart .......................................................... 5

Checks and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6

Brake Service .................................................................. 7 Removal .................................................................... 7 Disassembly ................................................................. 8 Inspection and Repair ......................................................... 9 Reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . •. 9 Installation ............................•..................................... 9

2

Form GSS-1241

International Tractors

Chassis

Tractor Series: 8 .... 275

File in Tractor Service Manual

CONTENTS

Specifications .................................................................. 3

General Description ............................................................. 4 Steering Mechanism .......................................................... 4 Wheels .................................................................. " .. 4 Front Axle .................................................................. 4 Rear Axle ................................................................... 4

Trouble Shooting Chart .......................................................... 5

Checks and Adjustments ........................................................ 8 Care of Tires ................................................................ 8 Wheel Alignment ............................................................ 10 Track Width Alignment ....................................................... 10

Steering Mechanism Service ..................................................... 13 Removal ..................................................................... 13 Disassembly ................................................................. 14 Inspection and Repair ......................................................... 16 Reassembly ...................................................... ; ........... 16 Installation .................................................................. 17

Wheel Service .................................................................. 18 Removal ..................................................................... 18 Disassembly .................................................................. 18 Inspection and Repair ......................................................... 18 Reassembly .................................................................. 18 Installation .................................................................. 20

Axle Service ................................................................... 21 Removal .................................................................... 2 1 Disassembly ................................................................ 23 Inspection and Repair ......................................................... 23 Reassembly .................................................................. 24 Installation .................................................................. 25

2

Form GSS-1249

International Tractors

Electrical Equipment

Tractor Series: B- 75

File in Tractor' Service Manual

CONTENTS

Specifications ....

General Description Battery ....... . Charging System . Cold Starting System. Starter Motor .. Lighting Sys tern . Heat Indicator ..

Trouble Shooting Chart

Testing ......... . Test Equipment Required. Tractor Wiring Diagram. Testing the Battery ..... Testing the Charging System Testing the Generator ..... Testing the Voltage Regulator. Testing the Cut-Out ...... . Testing the Cold Starting System. Testing the Starter Motor System.

Generator Service . . . . . Removal ......... . Disassembly ...... . Inspection and Repair .. Reas sembly. . . . . . . . Installation. . . . . . . .

3

4 4 6

10 12 14 14

16

20 20 21 21 25 25 27 28 29 31

33 33 33 33 36 36

Adjusting Generator Drive Belt Tension 37

2

Control Box Service Removal ...... . Disassembly ... . Mechanical Adjus tment Electrical Adjustment. Reassembly. Installation ....... .

Cold Starting System Service Removal ... Inspection .. Reassembly.

Starter Motor Service . . . Removal... . .... . Disassembly ...... . Inspection and Repair .. Clutch Assembly ..... Reassembly of Complete Starter Motor.

Installation ........ .

Lighting System Service . . Checking Lighting System Failures ...

Removal and Disassembly ......... .

Reassembly and Installation.

38 38 38 38 39 41 41

41 41 42 43

44 44 44 45 47

49 49

50

50

50 53

A. - CUT IN

As the generator speed rises contacts should close between 12.7 and 13.3 volts.

B. - CUT OUT

As the generator speed falls contacts should open at a reverse current between 3.5 and 5.0 amps.

lIIust. 23. Meter readings •• (A) = cut in, (B) = cut out.

:may be necessary to draw back the stop control to reduce idling speed sufficiently. Increase engine speed slowly. The cut-out points should close when the voltage rises to between 12.7 and 13.3 volts. The instant when the contacts close can be observed on the a:m:meter, the needle of which should flick when this occurs. See lllust. 23.

Decrease engine speed slowly. The cut-out points should open when the dis­charge or reverse current rises to between 3.5 and 5 a:mperes. If the cut-out does not operate between these li:mits the control box should be replaced, or if practicable, reset although again adjust:ment should only be atte:mpted by experienced personnel.

Testing the Circuit Resistance

Connect the negative (black) lead of the vo1t:meter to the generator ar:mature ter­:mina1 and the positive (red) to the battery negative post as shown in lllust. 22.

Start the engine and run it up to governed

29

speed. The voltage reading with the low range switch pressed should be no higher than:

0.75 volts when charging 5 a:mperes l. 0 volts when charging 10 a:mperes l. 5 volts when charging 15 a:mperes

If the voltage is higher, progressively :measure the voltage drop across each cable and co:mponent. The highest reading will indicate where the fault lies.

Testing the Cold Starting System

As the co:mponents of the glow plug circuit are connected in series with one another, the sa:me current :must flow through each, and the voltage drop across the individual co:mponents, when added together, :must approxi:mate the battery voltage.

While the current flowing through the co:mponents governs the operating te:m­perature of the ele:ments, the proportion

Form GSS-1248

I nternationa I Tractors

Power Take-off

Tractor Series: B-275

File in Tractor Service Manual

CONTENTS

Specifications .................................................................. 3

General Description ............................................................ 4

Trouble Shooting Chart .......................................................... 7

Maintenance and Adjustments .................................................... 8

Power Take-Off Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8 Removal. .. . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8 Disassembly ................................................................ 8 Inspection and Repair ......................................................... 9 Reassembly .................................................................. 11 Installation .................................................................. 11

2

8-275 Tractor Transmission

Service Manual

G55-1239

I Reprinted I

CONTENTS

Specifications 2

General Description ... ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Troubleshooting Chart ...... ....... ....... ..... .......... ... .. ... ...... . .. ... .. 12

Maintenance and Adjustments .................................................. 14

Transmission Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15 Removal ...... . ... .... . .. .......... .... . ..... .. ............. .... .......... 15 Disassembly .... . ...... ... ........ ..... ...... . ...... ... ... .. . .... . .. ...... 15 Inspection and Repair .... . ..... . ............. ........... ....... '. . . . . . . . . . .. 18 Reassembly ............................................................... 21 Installation ................................................................ 22

SPECIFICATIONS

General Type .. ... ... ....... .. ............ ..... ... ... .... ... . . Selective spur gear

No. of Speeds Forward .... . ... ...... .. . . . ... ...... .......... ...... 8 Reverse .............................................. 2

Lubricant Capacity .. ...... .... ............ .. .. .......... 5 gal

Types of Bearings Main Spline Shaft Front ............................... Needle roller Main ~pline Shaft Rear . .... ...... .... ... .... ........ .. 2 tapered roller Countershaft Front .................................... Single -row ball Countershaft Rear .... . ....... ...... . . ... . ..•........... Single -row ball Drive Shaft and Gear Front ........ ...... . .............. Single -row ball Drive Shaft and Gear Rear .............................. Single-row ball

Reverse Idler Shaft Diameters Front ... ......... .......... .... . ..... .. ......... .. ... 1. 249 to 1. 250 inches Rear ...................................•............. 991 to .992 inch Countershaft Diameter ................................ 2. 2492 to 2. 2500 inches

Bushing Sizes Reverse Idler Shaft Rear (Inside diameter) ..... . . . ......... 993 to .995 inch

(after pressing into place) Reverse Idler Shaft Front (Inside diameter) .............. 1. 251 to 1. 253 inches

(after pressing into place) Countershaft Gray Iron Bushing (Inside diameter) •........ 2.2500 to 2.2512 inch

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Form GSS-1240

I nternationa I Tractors

Differential

Tractor Series: B-275

File in Tractor Service Manual

CONTENTS

Specifications .................................................................. 3

General Description ............................................................ 4

Trouble Shooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7

Checks and Adjustments ...................................................... " 9

Differential Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13 Removal .................................................................... 13 Disassembly ...........................................................•.... 13 Inspection and Repair ........................................................ 15 Reassembly .........•........................ " .............................. 15 Installation .................................................................. 15

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