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HYUNDAI PDF OPERATING & SERVICE MANUALS

http://vk.od.ua/manuals

The operator manual contains a number of instructions and safety recommendations

regarding driving, handing, lubrication, maintenance, inspection and adjustment of theequipments. The manual is to promote safety maintenance and enhance machine performance.

The service manual has been prepared as an aid to improve the quality of repairs by givingthe serviceman an accurate understanding of the product and showing him the correct way to

perform repairs and make judgments. Make sure you understand the contents of this manualand use it to full effect at every opportunity.This service manual mainly contents the necessary technical information for operation

performed in a service workshop.

Ask manuals [email protected] . Specify machine and model what you need.Example: Crawler Excavator R210LC-7.

See sample contents and sample pages for R210LC-7 Crawler Excavator below.


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CONTENTS

Foreword - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0-1Before servicing this machine - - - - - - - - - - - - - - - - - - - - - - - - - - 0-2

EC regulation approved- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

0-3Table to enter S/No and distribution - - - - - - - - - - - - - - - - - - - - - - 0-4Safety labels - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0-5Guide(Direction, S/No, Symbol) - - - - - - - - - - - - - - - - - - - - - - - - 0-15

S FETY HINTS

1. Before operating the machine - - - - - - - - - - - - - - - - - - - - 1-1

2. During operating the machine - - - - - - - - - - - - - - - - - - - - 1-6

3. During maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-13

4. Parking - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-16

SPECIFIC TIONS

1. Major components - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-1

2. Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-2

3. Working range - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-5

4. Weight - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-85. Lifting capacities - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-11

6. Bucket selection guide - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-18

7. Undercarriage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-20

8. Specification for major components - - - - - - - - - - - 2-22

9. Recommended oils - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-26

CONTROL DEVICES

1. Cab devices - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-1

2. Cluster - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-2

3. Switches - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-9

4. Levers and pedals- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

3-145. Air conditioner and heater - - - - - - - - - - - - - - - - - - - - - - - - - - 3-17

6. Others - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-20

OPER TION

1. Suggestion for new machine - - - - - - - - - - - - - - - - - - - - - - 4-1

2. Check before starting the engine - - - - - - - - - - - - - - - 4-2

3. Starting and stop the engine - - - - - - - - - - - - - - - - - - - - - - 4-3

4. Mode selection system - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-7

5. Operation of the working device- - - - - - - - - - - - - - - - -

4-14

6. Traveling of the machine - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-15

7. Efficient working method - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-18

8. Operation in the special work sites- - - - - - - - - - - - -

4-239. Normal operation of excavator - - - - - - - - - - - - - - - - - - - 4-24

10. Attachment lowering - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-25

11. Storage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-26

12. RCV lever operating pattern - - - - - - - - - - - - - - - - - - - - - - - 4-28

13. Switching hydraulic attachment circuit - - - - - - - - 4-29

TR NSPOT TION

1. Preparation for transportation - - - - - - - - - - - - - - - - - - - - 5-1

2. Dimension and weight - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-23. Loading the machine - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-4

4. Fixing the machine - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-6

5. Loading and unloading by crane - - - - - - - - - - - - - - - - 5-7

M INTEN NCE

1. Instruction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-12. Tightening torque - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-6

3. Fuel, coolant and lubricants - - - - - - - - - - - - - - - - - - - - - - - 6-9

4. Maintenance check list - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-11

5. Maintenance chart - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-16

6. Service instruction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-18

7. Electrical system - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-40

8. Air conditioner and heater - - - - - - - - - - - - - - - - - - - - - - - - - - 6-43

TROUBLESHOOTING GUIDE

1. Engine - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-1

2. Electrical system- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

7-23. Others - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7-3

HYDR ULIC BRE KER ND QUICK CL MP

1. Selecting hydraulic breaker - - - - - - - - - - - - - - - - - - - - - - - - 8-1

2. Circuit configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-2

3. Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-3

4. Precaution while operating the breaker - - - - - - 8-4

5. Quick clamp - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8-6

INDEX- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

9-1

Operating Manual Crawler ExcavatorR210LC-7 http://vk.od.ua



2-22

ENGINE

Item

Type

Capacity

Maximum pressure

Rated oil flow

Rated speed

Specification

Variable displacement tandem axis piston pumps

2 105cc/rev *2 113cc/rev

330kgf/cm2 (4694 psi) [360kgf/cm2 (5120 psi)]

2 220 /min(58.1U.S. gpm / 48.4U.K. gpm)

2100 rpm *1950rpm

8. SPECIFICATIONS FOR MAJOR COMPONENTS

1

Item

Model

Type

Cooling method

Number of cylinders and arrangement

Firing order

Combustion chamber type

Cylinder bore stroke

Piston displacement

Compression ratio

Rated gross horse power(SAE J1995

Maximum torque at 1600 rpm *at 1500 rpm

Engine oil quantity

Dry weight

High idling speed

Low idling speedRated fuel consumption

Starting motor

Alternator

Battery

Specification

Cummins B5.9-C *Cummins 6BTAA

4-cycle turbocharged diesel engine, low emission

Water cooling

6 cylinders, in-line

1-5-3-6-2-4

Direct injection type

102 120mm(4.02" 4.72")

5880 cc(359cu in)

17.4 : 1 *17.3 : 1

155Hpat 2100 rpm(116 kWat 2100 rpm)

*150Hpat 1950 rpm(112 kWat 1950 rpm)

62.1 kgf m(450lbf ft)

*62.6kgf m(453lbf ft)

24 (6.3U.S. gal)

400kg(882lb) *496kg(1094 lb)

2250 50rpm *2180 50rpm

950 100rpm *1050 100rpm171.5 g/Hp hrat 2100 rpm *164.8 g/Hp hrat 1950 rpm

Nippon denso(24 V-5.5kW) *(24V-4.5kW)

Delco Remy (24 V-50A)

2 12V 100Ah

* : TIER II

[ ] : Power boost

* : TIER II

MAIN PUMP

Sample pages Operating Manual Crawler Excavator R210LC-7 http://vk.od.ua/manuals



2-23

GEAR PUMP

MAIN CONTROL VALVE

SWING MOTOR

Item

Type

Capacity

Maximum pressure

Rated oil flow

Specification

Fixed displacement gear pump single stage

15cc/rev

35kgf/cm2(500psi)

29.3 /min(7.7U.S. gpm/ 6.4U.K. gpm)

Item

Type

Operating method

Main relief valve pressureOverload relief valve pressure

Specification

9 spools mono-block

Hydraulic pilot system

330kgf/cm2(4695 psi)[360kgf/cm2(5120 psi)]390kgf/cm2(5550 psi)

Item

Type

Capacity

Relief pressure

Braking system

Braking torque

Brake release pressure

Reduction gear type

Swing speed

Specification

Two fixed displacement axial piston motor

151cc/rev

240kgf/cm2(3414 psi)

Automatic, spring applied hydraulic released

59kgf m(427lbf ft)

33~50 kgf/cm2(470~711 psi)

2 - stage planetary

12.5 rpm

3)

4)

5)

[ ]: Pooer boost

TRAVEL MOTOR

TRAVEL MOTOR(GM35VL, up to #2078)

6)

1)

Item

Type

Relief pressure

Reduction gear type

Braking system


Braking torque

Specification

Variable displacement axial piston motor

330kgf/cm2(4695 psi)

3-stage planetary


6kgf/cm2(85psi)

40.6 kgf m(294lbf ft)




2-24

REMOTE CONTROL VALVE

CYLINDER

Item

Type

Specification

Pressure reducing type

6.5kgf/cm2(92psi)

26kgf/cm2(370psi)

61mm(2.4in)

123mm(4.84 in)

Operating pressureMinimum

Maximum

Lever

PedalSingle operation stroke

Item Specification120 85 1290 mm

Extend only

140 100 1510 mm # 140 95 1460 mm

Extend and retract

125 85 1055 mm # 100 70 870mm

Extend only

Bore dia Rod dia Stroke

Cushion


Cushion


Cushion

Boom cylinder

Arm cylinder

Bucket cylinder

7)

8)

Discoloration of cylinder rod can occur when the friction reduction additive of lubrication oil spreads onthe rod surface.Discoloration does not cause any harmful effect on the cylinder performance.

# : LONG REACH

TRAVEL MOTOR(RMV147, #2079 and up)2)

Item

Type

Relief pressure

Reduction gear type

Braking system


Braking torque

Specification

Variable displacement axial piston motor

330kgf/cm2(4695 psi) 325kgf/cm2(4625 psi)

2-stage planetary


11kgf/cm2(156psi) 11kgf/cm2(157psi)

49.3 kgf m(357lbf ft) 49.3 kgf m(357lbf ft)

: HIGH WALKER




2-25

Capacity

SAE heaped Without side cutter

WidthItem

0.92 m3(1.20 yd3)

0.51 m3(0.67 yd3)

0.80 m3(1.05 yd3)

1.10 m3(1.44 yd3)

1.20 m3(1.57 yd3)

1.34 m3(1.75 yd3)

0.74 m3(0.97 yd3)

0.90 m3(1.18 yd3)

1.05 m3(1.37 yd3)

0.87 m3(1.14 yd3)

1.20 m3(1.57 yd3)

0.75 m3(0.98 yd3)

0.80 m3(1.05 yd3)

0.45 m3(0.59 yd3)

0.70 m3(0.92 yd3)

0.96 m3(1.26 yd3)

1.00 m3(1.31 yd3)

1.15 m3(1.50 yd3)

0.65 m3(0.85 yd3)

0.80 m3(1.05 yd3)

0.92 m3(1.20 yd3)

0.75 m3(0.98 yd3)

1.00 m3(1.31 yd3)

0.65 m3(0.85 yd3)

5

3

5

5

6

6

5

5

5

5

5

-

1150 mm(45.3")

700mm(27.6")

1000 mm(39.4")

1320 mm(52.0")

1400 mm(55.1")

1550 mm(61.0")

985mm(38.8")

1070 mm(42.0")

1290 mm(50.8")

1140 mm(44.9")

1410 mm(55.5")

1790 mm(70.5")

1270 mm(50.0")

820mm(32.3")

1120 mm(44.1")

1440 mm(56.7")

1520 mm(59.8")

1670 mm(65.7")

Toothquantity

: Heavy duty bucket

: Rock bucket(Heavy): Slope finishing bucket

R210LC-7

STD

OPT

BUCKET0)

SHOE)

Item Width

600mm(24")

700mm(28")

800mm(32")

800mm(32")

600mm(24")

700mm(28")

800mm(32")

710mm(28")

Ground pressure

0.46 kgf/cm2(6.54 psi)

0.40 kgf/cm2(5.69 psi)

0.35 kgf/cm2(4.98 psi)

0.42 kgf/cm2(5.97 psi)

0.49 kgf/cm2(6.97 psi)

0.43 kgf/cm2(6.12 psi)

0.38 kgf/cm2(5.40 psi)

0.43 kgf/cm2(6.12 psi)

Link quantity

49

49

49

49

49

49

49

49

Overall width

2990 mm(9' 10")

3090 mm(10' 2")

3190 mm(10' 6")

3190 mm(10' 6")

3395 mm(11' 2")

3495 mm(11' 6")

3595 mm(11' 10")

3505 mm(11' 6")

Standard

Standard

Standard

Option

R210LC-7

R210LC-7LONG REACH

R210LC-7HIGH WALKER

Option

: Double grouser.

CECE heaped With side cutter




6-11

Service

Check, Refill

Check, Add

Check, Add

Check, Add

Check, Clean

Check, Drain

Check, Clean

Check, Adjust

Page

6-25

6-30

6-18

6-20

6-40

6-26

6-26

6-24

Check items

Visual check

Fuel tank

Hydraulic oil level

Engine oil level

Coolant level

Control panel & pilot lamp

Water separator(~#3341)

Prefilter(#3342~)

Fan belt tension

DAILY SERVICE BEFORE STARTING

4. MAINTENANCE CHECK LIST

EVERY 50 HOURS SERVICE

Service

Drain

Check, Adjust

Lubricate

Check, AddCheck, Add

Lubricate

Page

6-25

6-35

6-33

6-336-33

6-39

1

2

Check items

Fuel tank(Water sediment)

Track tension

Swing bearing grease

Swing reduction gear oilSwing reduction gear grease

Lubricate pin and bushing

Boom cylinder tube end

Boom foot

Boom cylinder rod end

Arm cylinder tube end

Arm cylinder rod end

Boom + Arm connectingBucket cylinder tube end

Bucket cylinder rod end

Arm + Bucket connecting

Arm + Link, Bucket control

Bucket control rod




6-12

Service

Change

Replace

Replace

Replace

Replace

Replace

Replace

Check, Tight

Page

6-18, 19

6-18, 19

6-26-1

6-32

6-31

6-32

6-26-1

6-8

Check items

Engine oil

Engine oil filter

Prefilter(#3342~)

Pilot line filter

Hydraulic return filter

Drain filter cartridge

Fuel filter element

Bolts & Nuts

Sprocket mounting bolts

Travel motor mounting bolts

Swing motor mounting bolts

Swing bearing mounting bolts

Engine mounting bolts

Counterweight mounting bolts

Turning joint locating bolts

Track shoe mounting bolts and nuts

Hydraulic pump mounting bolts

INITIAL 50 HOUR S SERVICE

Service the above items only for the new machine, and thereafter keep the normal service interval.

Service

Replace

Replace

Replace

Replace

Page

6-31

6-32

6-32

6-32

Check items

Return filter

Pilot line filter

Air breather element

Drain cartridge filter


Replace 4 filters for continuous hydraulic breaker operation only.

3

4

Service

Change

Page

6-33

Check items

Swing reduction gear oil

INITIAL 250 HOUR S SERVICE




6-13

Page

6-40

6-31

6-32

6-32

6-44

6-32

6-8

Service

Check, Add

Replace

Replace

Replace

Check

Replace

Check, Tight

Check items

Battery electrolyte

Hydraulic oil return filter

Drain filter cartridge

Pilot line filter

Aircon & heater flesh filter

Air breather element

Bolts & Nuts

Sprocket mounting bolts

Travel motor mounting bolts

Swing motor mounting bolts

Swing bearing mounting bolts

Engine mounting bolts

Counterweight mounting bolts

Turning joint locating bolts

Track shoe mounting bolts and nuts

Hydraulic pump mounting bolts


Service

Change

ReplaceCheck, Clean

Check, Clean

Replace

Change

Page

6-18, 19

6-18, 196-23

6-25

6-26-1

6-26

Check items

Engine oil

Engine oil filterRadiator, cooler fin and charge air cooler

Air cleaner element(Primary)

Fuel filter element

Prefilter(#3342~)


If you use high sulfur containing fuel above than 0.5% or use low grade of engine oil reduce changeinterval.Clean the primary element only after 500 hours operation or when the air cleaner warning lamp blinks.Replace primary element and safety element after 4 times cleanings of primary element.

6

8

Service

Change

Page

6-34

Check items

Travel reduction gear oil

INITIAL 500 HOURS SERVICE




6-14

Service

Change

Change

Change

Page

6-34

6-33

6-33

Check items

Travel motor reduction gear oil

Swing reduction gear oil

Grease in swing gear and pinion


Service

Change

Check, Clean

Change

Page

6-31

6-31

6-20, 21, 22, 23

Check items

Hydraulic tank

Oil

Suction strainer

Coolant


Change oil every 600 hours of continuous hydraulic breaker operation.

10




6-15

WHEN REQUIREDWhenever you have trouble in the machine, you must perform the service of related items, systemby system.

11

Check items

Fuel systemFuel tank

Water separator(~#3341)

Prefilter(#3342~)

Fuel filter element

Engine lubrication system

Engine oil

Engine oil filter

Engine cooling systemCoolant

Radiator

Charge air cooler

Engine air system

Air cleaner element

Hydraulic system

Hydraulic oil

Return filter

Drain line filter

Pilot line filter

Element of breather

Suction strainer

Under carriage

Track tension

Bucket

Tooth

Side cutter

Linkage

Bucket assy

Air conditioner and heater

Fresh filter

Recirculation filter

Service

Drain or Clean

Drain or Replace

Clean or Replace

Replace

Change

Replace

Add or Change

Clean or Flush

Check

Replace

Add or Change

Replace

Replace

Replace

Replace

Clean

Check, Adjust

Replace

Replace

Adjust

Replace

Clean, Replace

Clean

Page

6-25

6-26

6-26

6-26-1

6-18, 19

6-18, 19

6-20, 21, 22, 23

6-20, 21, 22, 23

6-23

6-25

6-30

6-31

6-32

6-32

6-32

6-31

6-35

6-37

6-37

6-36

6-36

6-43

6-44




Method of rem oving the battery cableRemove the cable from the ground connection

terminal side) and reconnect it last whenreassembling.

6-40

WIRING, GAUGESCheck regularly and repair loose or malfunctioning

gauges when found.

Specific gravity of batteryJudge the charging rate of battery by the specificgravity. The specific gravity changes by theambient temperature.Check the charging rate by referring to the chartbelow.

7. ELECTRICAL SYSTEM

BATTERY

Check and repairCheck the electrolyte level and fill with distilledwater to the prescribed level as necessary.

Wash the terminal with hot water if it iscontaminated, and apply grease to theterminals after washing.Do not stain clothes or skin with electrolyteas it is acid.Be careful not to get the e lectrolyte in eyes.Wash with clean water and go to the doctorif it enters the eyes.Remove the fire and spark around battery.

100%

90%

80%

75%

1.26

1.24

1.22

1.21

1.27

1.25

1.23

1.22

1.28

1.26

1.24

1.23

Temperature 20 C(68 F)

10 C(50 F)

-10 C(14 F)Charging rate

(3)

first(

Plug

Upper levelLower level

10 ~15 mm

Specificgravity meterHeight of sight

Battery

Battery relayGround

13036MI29

13036MI30

13036MI31

13036MI32

1)

2)

1)

2)




6-41

STARTING THE ENGINE WITH A BOOSTER CABLEKeep following order when you are going to startengine using booster cable.

Connection of booster cableUse the same capacity of battery for starting.Make sure that the starting switches of thenormal machine and trouble machine are bothat the OFF position.Connect the red terminal of booster cable to thebattery (+) terminal between exhausted andnew battery.Connect the black terminal of the booster cablebetween new battery (-) terminal and chassis oftrouble machine.

Keep firmly all connection, the spark will becaused when connecting finally.

Starting the engineStar ting the engine of the normal machine andkeep it to run at high idle.Start engine of the trouble machine with startingswitch.

If you can not start it by one time, restart theengine after 2 minutes.

ON OFF

START

Taking off the booster cableTake off the booster cable(black).Take off the booster cable(red) connected to the(+) terminal.Run engine with high idle until charging theexhausted battery by alternator, fully.

Explosive gas is generated while using thebattery or charging it. Keep away flame andbe careful not to cause the spark.Charge the battery in the well ventilatedplace.Place the machine on the earth or concrete.Avoid charging the machine on the steelplate.Do not connect +) terminal and -) terminalwhen connecting booster cable because it

will be shorted.

Connection of booster cable

Red

Normal(New)machine

Trouble(Exhausted)machine

BlackTo chassis of trouble machine

Connection order :

(1)

Disconnection of booster cable

Red

Normal(New)machine

Trouble(Exhausted)machine

BlackTo chassis of trouble machine

Disconnection order :

13036MI33

13036MI33

21076MA29

(2)

(3)

3)




6-42

Welding repairBefore start to welding, follow the belowprocedure.Shut off the engine and remove the startingswitch.Disconnect ground cable from battery bymaster switch.Before carrying out any electric welding on themachine, the battery cables should bedisconnected and the connectors pulled out ofthe electronic control units(CPU, cluster etc).Connect the earth(ground) lead of the weldingequipment as close to the welding point aspossible.Do not weld or flame cut on pipes or tubesthat contain flamm able fluids. Clean themthoroughly w ith nonflammable solvent beforewelding or flame cutting on them.Do not attempt to welding work before carryout the above.If not, i t will caused serious damage atelectric CAPO system.

CPUController

YR G

MODEL:ROBEX450LC-7

PART NO:21NB-32110

CN-51

CN-50

H Y U N

D A I

W o r k M o d e

U s e r M o

d e

A u t o D e c e

l

P o w e r

M o d e

T r a v e l

S p e e d

S e l e c t

Cluster

CN-56

OFF

Master switch

Battery

4)

21076MI35




SERVICE MANUAL CRAWLER EXCAVATOR R210LC-7

ContentFOREWORD SECTION 6

INDEX TROUBLESHOOTING

SECTION 1 Group 1 Before troubleshootingGENERAL Group 2 Hydraulic and Mechanical SystemGroup 1 Safety Hints Group 3 Electrical System

Group 2 Specifications Group 4 Mechatronics SystemSECTION 2 Group 5 Mechatronics System(#1001 and up,Tier 2)STRUCTUREND FUNCTION SECTION 7

Group 1 Pump Device MAINTENANCE STANDARD

Group 2 Main Control Valve Group 1 Operational Performance TestGroup 3 Swing Device Group 2 Major ComponentsGroup 4 Travel Device Group 3 Track and Work EquipmentGroup 5 RCV Lever SECTION 8

Group 6 RCV Pedal DISASSEMBLY AND ASSEMBLY

SECTION 3 Group 1 Precaution

HYDRAULIC SYSTEM Group 2 Tightening TorqueGroup 1 Hydraulic Circuit Group 3 Pump DeviceGroup 2 Main Circuit Group 4 Main Control ValveGroup 3 Pilot Circuit Group 5 Swing DeviceGroup 4 Single Operation Group 6 Travel DeviceGroup 5 Combined Operation Group 7 RCV LeverSECTION 4 Group 8 Turning JointELECTRICAL SYSTEM Group 9 Boom, Arm and Bucket CylinderGroup 1 Component Location Group 10 UndercarriageGroup 2 Electrical Circuit(up to #1000) Group 11 Work EquipmentGroup 3 Electrical Component Specification SECTION 9

Group 4 Connectors COMPONENT MOUNTING TORQUE

Group 5 Electrical Circuit(#1001 and up, Tier 2) Group 1 Introduction guideSECTION 5 Group 2 Engine systemMECHATROMICS SYSTEM Group 3 Electric systemGroup 1 Outline(up to #1000) Group 4 Hydraulic systemGroup 2 Mode selection System(up to #1000) Group 5 UndercarriageGroup 3 Automatic Deceleration System Group 6 StructureGroup 4 Power Boost System Group 7 Work equipmentGroup 5 Travel Speed Control SystemGroup 6 Automatic Warming Up FunctionGroup 7 Engine Overheat Prevention FunctionGroup 8 Anti-Restart SystemGroup 9 Self-Diagnostic SystemGroup 10 Engine Control SystemGroup 11 EPPR(Electro Proportional Pressure

Reducing) ValveGroup 12 Prolix Switch(up to #0179)Group 13 Monitoring SystemGroup 14 Outline(#1001 and up, Tier 2)Group 15 Mode selection system

(#1001 and up, Tier 2)



5 - 9

GROUP 6 AUTOMATIC WARMING UP FUNCTION

Main pump Pilot pump

EPPR valve

Drive signal

P M

Engine

Coolanttemp sensor

Fuel injectionpump

Accelactuator

CPU controllerWarming up lamp signal

C o o

l a n

t t e m p e r a

t u r e s i g n a

l

M o

t o r

d r i v e s i g n a

l

P o

t e n

t i o m e

t e r s i g n a

l

Max flowCO valve

CPU controller reads engine coolant temperature through the temperature sensor, and if the coolant

temperature is less than 3 0¡£C , it increases the engine speed from key start rpm to 1200rpm. At thistime the mode does not change.

In case of the coolant temperature increases up to 3 0¡£C, the engine speed is decreased to key startspeed. And if an operator changes mode set during the warming up function, the CPU controllercancels the automatic warming up function.

3. LOGIC TABLE

1.

2.

Actuated

Canceled

Warming up lamp

- Coolant temperature :

Less than 30¡£C(After engine run)- Accel dial position is under 3

- Coolant temperature : Above 30¡£C- Warming up time : Above 10 minutes- Changed mode set by operator- Increase engine speed by rotating accel

dial clockwise¡Ø If any of the above conditions is

applicable, the automatic warming upfunction is canceled

- Coolant temperature : Above 30¡£C

- Mode : Default(S mode)

- Warming up time : 10 minutes(Max)- Warming up lamp : ON

- Default mode- Default mode- Changed mode

- Warming up lamp : OFF

Description Condition Function

21075MS08

Sample pages Service Manual Crawler Excavator R210LC-7 http://vk.od.ua/manuals



1. REMOVAL AND INSTALL

REMOVAL

Lower the work equipment to the groundand stop the engine.

Operate the control levers and pedalsseveral times to release the remainingpressure in the hydraulic piping

Loosen the breather slowly to release thepressure inside the hydraulic tank.Escaping fluid under pressure canpenetrate the skin causing serious injury.

Loosen the drain plug under the hydraulictank and drain the oil from the hydraulictank.¡¤ Hydraulic tank quantity : 180§ ¤

Remove socket bolts(74) and disconnectpipe(9).

Disconnect pilot line hoses(4, 5, 6, 7, 8, 9).

Remove socket bolts(72) and disconnect

pump suction tube(3).When pump suction tube is disconnected,the oil inside the piping will flow out, socatch it in oil pan.

Sling the pump assembly and remove thepump mounting bolts.¡¤ Weight : 120 kg(265 lb)Pull out the pump assembly from housing.When removing the pump assembly,check that all the hoses have beendisconnected.

8-7

GROUP 3 PUMP DEVICE

A 1

A 2

9

74

723

48

49

55 69

71

64

58

78

A 3

B 3

P m 2

P m 1

PsvD r

a4

P i 1

P i 2

1)

(1)

(2)

(3)

(4)

(5)

(6)

(7)

¡Ø

(8)

¡Ø

13031GE18

21078DA01

21078DA02




8-8

INSTALL

Carry out installation in the reverse orderto removal.

Remove the suction strainer and clean it.

Replace return filter with new one.

Remove breather and clean it.

After adding oil to the hydraulic tank to thespecified level.

Bleed the air from the hydraulic pump.Remove the air vent plug(2EA).Tighten plug lightly.Start the engine, run at low idling, and

check oil come out from plug.Tighten plug.

Start the engine, run at low idling(3~5minutes) to circulate the oil through thesystem.

Confirm the hydraulic oil level and checkthe hydraulic oil leak or not.

2)

(1)

(2)

(3)

(4)

(5)

(6)ç̈è̈é̈

ê̈

(7)

(8)




8-9

2. MAIN PUMP(1/2)

STRUCTURE1)

04 Gear pump111 Drive shaft(F)113 Drive shaft(R)114 Spline coupling123 Roller bearing124 Needle bearing127 Bearing spacer141 Cylinder block151 Piston152 Shoe

153 Set plate156 Bushing157 Cylinder spring158 Spacer211 Shoe plate212 Swash plate214 Bushing

251 Support261 Seal cover(F)271 Pump casing312 Valve block313 Valve plate(R)314 Valve plate(L)401 Hexagon socket bolt406 Hexagon socket bolt466 VP Plug468 VP Plug

490 Plug531 Tilting pin532 Servo piston534 Stopper(L)535 Stopper(S)548 Pin702 O-ring

710 O-ring717 O-ring724 O-ring725 O-ring728 O-ring732 O-ring774 Oil seal789 Back up ring792 Back up ring806 Hexagon head nut

808 Hexagon head nut824 Snap ring885 Pin886 Spring pin901 Eye bolt953 Set screw954 Set screw

789, 732 532 214 548 531 724 792 534 901 808 954 717 151 152 211 113 04

535806

953886717406261774

111824127710123251

212

A

702

490 153 156 158 157 468 313 124 312 114 466 885 314 141 271 401728 725 (210-7) 8-9




8-10

MAIN PUMP(2/2)

541 Seat543 Stopper 1

544 Stopper 2545 Steel ball

079 Proportional reducing valve

544

543

545

541

079

VIEW A (210-7) 8-10




8-11

TOOLS AND TIGHTENING TORQUE

ToolsThe tools necessary to disassemble/reassemble the pump are shown in the follow list.

2)

(1)

Hexagon sockethead bolt

Hexagon sockethead bolt Henagon nut

VP plug(PF thread)

M 5

M 6

M 8

M10

M20, M22

M12

M16

M18

M20

-

M12

M16

M18

M20

-

VP-1/4

-

VP-1/2

-

VP-3/4

BP-1/16

BP-1/8

BP-1/4

BP-3/8

BP-1

-

-

PO-1/4

PO-3/8

PO-1, 1 1/4, 1 1/2

M 8

M10

M12, M14

M16, M18

-

PT plug(PT thread)

PO plug(PF thread)

Hexagon sockethead setscrewName

Tool name & size Part name

Allen wrench

Double ring spanner,socket wrench, double(Single)

open end spanner

B

B

B

4

5

6

8

17

-

19

24

27

30

36

Adjustable angle wrench

Screw driver

Hammer

Pliers

Steel bar

Torque wrench

Medium size, 1 set

Minus type screw driver, Medium size, 2 sets

Plastic hammer, 1 set

For snap ring, TSR-160

Steel bar of key material approx. 10¡ ¿ 8¡¿ 200

Capable of tightening with the specified torques




8-12

Tightening torque(2)

Part name

Hexagon socket head bolt

Material : SCM435)

PT Plug(Materal : S45C)¡Ø Wind a seal tape 1 1/2 to 2

turns round the plug

PF Plug(Materal : S45C)

M 5

M 6M 8

M10

M12

M14

M16

M18

M20

PT1/16PT 1/8

PT 1/4

PT 3/8

PT 1/2

PF 1/4

PF 1/2

PF 3/4

PF 1

PF 1 1/4

PF 1 1/2

0.7

1.23.0

5.8

10.0

16.0

24.0

34.0

44.0

0.71.05

1.75

3.5

5.0

3.0

10.0

15.0

19.0

27.0

28.0

5.1

8.721.7

42.0

72.3

116

174

246

318

5.17.59

12.7

25.3

36.2

21.7

72.3

109

137

195

203

0.16

0.200.24

0.31

0.39

0.47

0.55

0.55

0.67

0.160.20

0.24

0.31

0.39

0.24

0.39

0.55

0.67

0.67

0.67

4

56

8

10

12

14

14

17

45

6

8

10

6

10

14

17

17

17

Bolt sizeTorque Wrench size

kgf¡¤ m lbf¡¤ ft in mm




8-13

DISASSEMBLY

Select place suitable to disassembling.Select clean place.Spread rubber sheet, cloth or so on onoverhaul workbench top to prevent partsfrom being damaged.

Remove dust, rust, etc, from pumpsurfaces with cleaning oil or so on.

Remove drain port plug(468) and let oilout of pump casing(Front and rear pump).

3)

Place pump horizontally on workbenchwith its regulator-fitting surface down andseparate pump casing(271) from valve

block(312).Before bringing this surface down, spreadrubber sheet on workbench without fail toprevent this surface from being damaged.

(1)¡Ø¡Ø

(2)

(3)

(6)

¡Ø

Loosen hexagon socket head bolts(401)which tighten swash plate support(251),pump casing(271) and valve block(312).If gear pump and so on are fitted to rearface of pump, remove them beforestarting this work.

(5)

¡Ø

Remove hexagon socket head bolts(412,413) and remove regulator.

(4)

(210-7) MP01

(210-7) MP02




8-14

Pull cylinder block(141) out of pumpcasing(271) straightly over driveshaft(111). Pull out also pistons(151),set plate(153), spherical bush(156) andcylinder springs(157) simultaneously.

Take care not to damage sliding surfacesof cylinder, spherical bushing, shoes,swash plate, etc.

(7)

¡Ø

Remove hexagon socket head bolts(406)and then seal cover(F, 261).Fit bolt into pulling out tapped hole of sealcover(F), and cover can be removedeasily.Since oil seal is fitted on seal cover(F),take care not to damage it in removingcover.

Remove hexagon socket head bolts(408)and then seal cover(R, 262).In case fitting a gear pump, first, removegear pump.

Tapping lightly fitting flange section ofswash plate support(251) on its pumpcasing side, separate swash plate supportfrom pump casing.

(8)

¡Ø

¡Ø

(9)

Remove shoe plate(211)and swashplate(212) from pump casing(271).

(11)

(10)

(210-7) MP03

(210-7) MP04

(210-7) MP05

(210-7) MP06




8-15

If necessary, remove stopper(L, 534),stopper(S, 535), servo piston(532) and

tilting pin(531) from pump casing(271),and needle bearing(124) and splinedcoupling(114) from valve block(312).In removing tilting pin, use a protector toprevent pin head from being damaged.Since loctite is applied to fitting areas oftilting pin and servo piston, take care notto damage servo piston.Do not remove needle bearing as far aspossible, except when it is considered to

be out of its life span.Do not loosen hexagon nuts of valveblock and swash plate support.If loosened, flow setting will be changed.

(14)

¡Ø

¡Ø

¡Ø

¡Ø

Remove valve plates(313, 314) from valveblock(312).These may be removed in work(6).

(13)

¡Ø

Tapping lightly shaft ends of drive shafts(111, 113) with plastic hammer, take outdrive shafts from swash plate supports.

(12)

(210-7) MP07

(210-7) MP08




8-16

ASSEMBLY

For reassembling reverse thedisassembling procedures, payingattention to the following items.Do not fail to repair the parts damagedduring disassembling, and preparereplacement parts in advance.Clean each part fully with cleaning oil anddry it with compressed air.Do not fail to apply clean working oil tosliding sections, bearings, etc. beforeassembling them.In principle, replace seal parts, such asO-rings, oil seals, etc.

For fitting bolts, plug, etc., prepare atorque wrench or so on, and tighten themwith torques shown in page 8-11, 12.For the double-pump, take care not tomix up parts of the front pump with thoseof the rear pump.

(1)

4)

ç̈

è̈

é̈

ê̈

ë̈

ì̈

Fit swash plate support(251) to pumpcasing(271), tapping the former lightlywith a hammer.

After servo piston, tilting pin, stopper(L)and stopper(S) are removed, fit themsoon to pump casing in advance forreassembling.In tightening servo piston and tilting pin,use a protector to prevent tilting pin headand feedback pin from being damaged.In addition, apply loctite(Medium strength)to their threaded sections.

(2)

¡Ø

¡Ø

(210-7) MP09




8-17

Place pump casing with its regulator fittingsurface down, fit tilting bush of swashplate to tilting pin(531) and fit swash plate(212) to swash plate support(251)correctly.

Confirm with fingers of both hands thatswash plate can be removed smoothly.Apply grease to sliding sections of swashplate and swash plate support, and driveshaft can be fitted easily.

(3)

¡Ø

¡Ø

Assemble piston cylinder subassembly¡² cylinder block(141), piston subassembly(151, 152), set plate(153), spherical bush(156), spacer(158) and cylinder spring(157)¡³.Fit spline phases of retainer and cylinder.Then, insert piston cylinder subassemblyinto pump casing.

(6)

Assemble seal cover(F, 261) to pumpcasing(271) and fix it with hexagon socket

head bolts(406).Apply grease lightly to oil seal in sealcover(F).Assemble oil seal, taking full care not todamage it.For tandem type pump, fit rear cover(263)and seal cover(262) similarly.

(5)

¡Ø

¡Ø

¡Ø

To swash plate support(251), fit driveshaft(111) set with bearing(123), bearingspacer(127) and snap ring(824).

Do not tap drive shaft with hammer or soon.Assemble them into support, tappingouter race of bearing lightly with plastichammer.Fit them fully, using steel bar or so on.

(4)

¡Ø

¡Ø

(210-7) MP10

(210-7) MP11

(210-7) MP12

(210-7) MP13




8-18

Fit valve plate(313) to valve block(312),entering pin into pin hole.Take care not to mistake suction / deliverydirections of valve plate.

(7)

¡Ø

Putting feedback pin of tilting pin intofeedback lever of regulator, fit regulatorand tighten hexagon socket head bolts(412, 413).Take care not to mistake regulator of frontpump for that of rear pump.

(9)

¡Ø

Fit valve block(312) to pump casing(271)and tighten hexagon socket head bolts(401).

At first assemble this at rear pump side,and this work will be easy.Take care not to mistake direction of valveblock.Clockwise rotation(Viewed from inputshaft side) - Fit block with regulator upand with delivery flange left, viewed fromfront side.Counter clockwise rotation(Viewed frominput shaft side) - Fit block with delivery

flange right, viewed from front side.

(8)

¡Ø

¡Ø

¡Ø

¡Ø

Fit drain port plug(468).This is the end of reassembling procedures.

(10)

(210-7) MP14

(210-7) MP16

(210-7) MP17




8-19

3. REGULATOR

STRUCTURE(1/2)1)

A

A

A

B

B

B

SECTION B-B

VIEW C

P2Pf

Pm

Pi

KR3G-9C32

755

858

614

615

613

611

438

801

924

647648

723

642

801

656

438

735

722

897

612

875 874412

641 730 643 708 644 645 646 728

413 438

496 724 725 436

(210-7) 8-19




8-20

412 Hexagon socket screw413 Hexagon socket screw436 Hexagon socket screw438 Hexagon socket screw496 Plug601 Casing611 Feed back lever612 Lever(1)613 Lever(2)614 Fulcrum plug615 Adjust plug621 Compensator rod622 Piston case623 Compensator rod624 Spring seat(C)625 Outer spring626 Inner spring627 Adjust stem(C)628 Adjust screw(C)629 Cover(C)

630 Nut631 Sleeve641 Pilot cover642 Pilot cover(QMC)643 Pilot piston644 Spring seat(Q)645 Adjust stem(Q)646 Pilot spring647 Stopper648 Piston(QMC)651 Sleeve652 Spool653 Spring seat654 Return spring655 Set spring656 Block cover708 O-ring722 O-ring724 O-ring725 O-ring

728 O-ring730 O-ring732 O-ring733 O-ring734 O-ring735 O-ring755 O-ring756 O-ring763 O-ring801 Nut814 Snap ring836 Snap ring858 Snap ring874 Pin875 Pin887 Pin897 Pin898 Pin924 Set screw925 Adjust screw(Q)

REGULATOR(2/2)

734 653 654 836 651 652 601 624 629 630 628

655

641

814

898

631

732

733

622

C

801

925

627

732

621 623 625 626 887 763 756

SECTION A-A(210-7) 8-20




8-21

TOOLS AND TIGHTENING TORQUE

ToolsThe tools necessary to disassemble/reassemble the pump are shown in the follow list.

2)

(1)

Name

Adjustable angle wrench

Screw driver

Hammer

Pliers

Steel bar

Torque wrench

Pincers

Bolt

Small size, Max 36 mm

Minus type screw driver, Medium size, 2 sets

Plastic hammer, 1 set

For snap ring, TSR-160

4¡¿ 100 mm

Capable of tightening with the specified torques

-

M4, Length : 50 mm

Tool name & size Part name

Hexagon sockethead bolt

PT plug(PT thread)

PO plug(PF thread)

Hexagon sockethead setscrew

M 5

M 6

M 8

Hexagon headbolt

M 8

Hexagon nut

M 8

VP plug(PF thread)

-

BP-1/16

BP-1/8

BP-1/4

-

-

PO-1/4

M 8

M10

M12, M14B

B

B

4

5

6

-

6

Allen wrench

Double ring spanner,socket wrench, double(Single)

open end spanner




8-22

Tightening torque(2)

Part name

Hexagon socket head bolt

Material : SCM435)

PT Plut(Materal : S45C)¡Ø Wind a seal tape 1 1/2 to 2

turns round the plug

PF Plut(Materal : S35C)

M 5

M 6M 8

M10

M12

M14

M16

M18

M20

PT1/16PT 1/8

PT 1/4

PT 3/8

PT 1/2

PF 1/4

PF 1/2

PF 3/4

PF 1

PF 1 1/4

PF 1 1/2

0.7

1.23.0

5.8

10.0

16.0

24.0

34.0

44.0

0.71.05

1.75

3.5

5.0

3.0

10.0

15.0

19.0

27.0

28.0

5.1

8.721.7

42.0

72.3

116

174

246

318

5.17.59

12.7

25.3

36.2

21.7

72.3

109

137

195

203

0.16

0.200.24

0.31

0.39

0.47

0.55

0.55

0.67

0.160.20

0.24

0.31

0.39

0.24

0.39

0.55

0.67

0.67

0.67

4

56

8

10

12

14

14

17

45

6

8

10

6

10

14

17

17

17

Bolt sizeTorque Wrench size

kgf¡¤ m lbf¡¤ ft in mm




8-23

DISASSEMBLYSince the regulator consists of smallprecision finished parts, disassembly andassembly are rather complicated.For this reason, replacement of a regulator

assembly is recommended, unless there isa special reason, but in case disassembly isnecessary for an unavoidable reason, readthrough this manual to the end beforestarting disassembly.

Choose a place for disassembly.Choose a clean place.Spread rubber sheet, cloth, or so on ontop of work-bench to prevent parts from

being damaged.Remove dust, rust, etc. from surfaces ofregulator with clean oil.

(1)¡Ø¡Ø

(2)

3)

Remove hexagon socket head screw(438) and remove cover(C,629)Cover(C) is fitted with adjusting screw(C,QI) (628, 925), adjusting ring(C, 627),

lock nut(630), hexagon nut(801) andadjusting screw(924).Do not loosen these screws and nuts.If they are loosened, adjusted pressure-flow setting will vary.

(4)

¡Ø

Remove hexagon socket head screw(412, 413) and remove regulator mainbody from pump main body.Take care not to lose O-ring.

(3)

¡Ø

(210-7) REG01

(210-7) REG02




8-24

Remove locking ring(858) and take outfulcrum plug(614) and adjusting plug(615).Fulcrum plug(614) and adjusting plug(615) can easily be taken out with M6 bolt.

(8)

¡Ø

Remove snap ring(814) and take outspring seat(653), return spring(654) and

sleeve(651).Sleeve(651) is fitted with snap ring(836).When removing snap ring(814), returnspring(654) may pop out.Take care not to lose it.

(7)

¡Ø¡Ø

Remove hexagon socket head screws(436, 438) and remove pilot cover(641).After removing pilot cover, take out set

spring(655) from pilot section.

(6)

After removing cover(C, 629) subassembly,take out outer spring(625), inner spring(626) and spring seat(C, 624) fromcompensating section.Then draw out adjusting ring(Q, 645), pilotspring(646) and spring seat(644) frompilot section.Adjusting ring(Q,645) can easily be drawnout with M4 bolt.

(5)

¡Ø

(210-7) REG03

(210-7) REG04

(210-7) REG05

(210-7) REG06




8-25

Draw out pin(874) and remove feedbacklever(611).

Push out pin(874, 4 mmin dia.) from abovewith slender steel bar so that it may notinterfere with lever(1, 612).

(10)

Remove lever(2, 613). Do not draw outpin(875).Work will be promoted by using pincers or

so on.

(9)

¡Ø

(210-7) REG07

(210-7) REG08

(210-7) REG09

(210-7) REG10




8-26

Remove lever(1, 612). Do not draw outpin(875).

Draw out pilot piston(643) and spool(652).

Draw out piston case(622), compensating

piston(621) and compensating rod(623).Piston case(622) can be taken out bypushing compensating rod(623) atopposite side of piston case.

This completes disassembly.

(11)

(12)

(13)

¡Ø




8-27

ASSEMBLY

For assembly, reverse disassemblyprocedures, but pay attention to thefollowing items.Always repair parts that were scored atdisassembly.Get replacement parts ready beforehand.Mixing of foreign matter will causemalfunction.Therefore, wash parts well with cleaningoil, let them dry with jet air and handlethem in clean place.Always tighten bolts, plugs, etc. to theirspecified torques.

Do not fail to coat sliding surfaces withclean hydraulic oil before assembly.Replace seals such as O-ring with newones as a rule.

(1)

ç̈

è̈

é̈

ê̈

ë̈

4)

Spool

Feedback lever

Put compensating rod(623) intocompensating hole of casing(601).

Put pin force-fitted in lever(1, 612) intogroove of compensating rod and fit lever

(1) to pin force-fitted in casing.

(2)

(3)

Fit spool(652) and sleeve(651) into hole inspool of casing.Confirm that spool and sleeve slidesmoothly in casing without binding.Pay attention to orientation of spool.

(4)

¡Ø

¡Ø

(210-7) 8-27




8-28

Lever (1) side Lever (2) side

(Fulcrum plug ofadjusting plug side)

Fit return spring(654) and spring seat(653) into spool hole and attach snap ring(814).

(10)

Fit fulcrum plug(614) so that pin force-fitted in fulcrum plug(614) can be put into

pin hole of lever(2).Then fix locking ring(858).

Insert adjusting plug(615) and fit lockingring.Take care not to mistake inserting holesfor fulcrum plug and adjusting plug.At this point in time move feedback leverto confirm that it has no large play and isfree from binding.

(8)

(9)

¡Ø

Put pilot piston(643) into pilot hole ofcasing.Confirm that pilot piston slides smoothly

without binding.Put pin force-fitted in lever(2, 613) intogroove of pilot piston.Then fix lever(2).

(6)

¡Ø

(7)

Fit feedback lever(611), matching its pinhole with pin hole in spool.Then insert pin(874).Insert pin in feedback lever a little to easeoperation.Take care not to mistake direction offeedback lever.

(5)

¡Ø

¡Ø

(210-7) 8-28

(210-7) REG11

(210-7) REG12

(210-7) REG13




Install cover(C, 629) fitted with adjustingscrews(628, 925), adjusting ring(C, 627),

lock nut(630), hexagon nut(801) andadjusting screw(924).Then tighten them with hexagonal sockethead screws(438).

This completes assembly.

(13)

Put spring seat(644), pilot spring(646) andadjusting ring(Q, 645) into pilot hole.Then fix spring seat(624), inner spring

(626) and outer spring(625) intocompensating hole.When fitting spring seat, take care not tomistake direction of spring seat.

(12)

¡Ø

Fit set spring(655) to spool hole and putcompensating piston(621) and pistoncase(622) into compensating hole.Fit pilot cover(641) and tighten it withhexagonal socket head screws(436, 438).

(11)

(210-7) REG14

(210-7) REG15

(210-7) REG16


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