Komatsu PC200-6 PC200LC-6,PC220-6,PC220LC-6 Shop Manual YEBM200201 PDF

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Komatsu PC200-6 PC200LC-6,PC220-6,PC220LC-6 Shop Manual YEBM200201  – PDF DOWNLOAD

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Komatsu PC200-6 PC200LC-6,PC220-6,PC220LC-6 Shop Manual YEBM200201  – PDF DOWNLOAD

Language : English
Pages : 773
Downloadable : Yes
File Type : PDF

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TABLE OF CONTENTS:

Komatsu PC200-6 PC200LC-6,PC220-6,PC220LC-6 Shop Manual YEBM200201  – PDF DOWNLOAD

• SERIAL NUMBERS
• PC200-6 STD              DB60001 and up
• PC200LC-6 STD         DB70001 and up
•  PC220-6 STD            DB80001 and up
• PC220LC-6 STD         DB90001 and up
• PC2203E-6 STD         DBA0001 and up

COVER . 1
01 GENERAL 2
SPECIFICATION DIMENSION DRAWINGS 3
PC200,200LC-6 . 3
PC220,220LC-6 . 4
PC220SE-6 . 5
SPECIFICATIONS 6
PC200-6 STD . 6
PC220-6, 220LC-6 STD 8
PC220SE-6 . 10
PC220SE-6 . 12
WEIGHT TABLE 13
PC200-6 STD . 13
PC220-6, PC220LC-6, PC220SE-6 . 15
PC200, 200LC-6 17
PC220-6, 220LC-6, 220SE-6 . 18
10 STRUCTURE AND FUNCTION . 19
ENGINE RELATED PARTS 20
RADIATOR·OIL COOLER . 21
POWER TRAIN . 22
FINAL DRIVE . 23
3.Basic structure and sketch map 24
3-1.Basic structure of GM motor . 24
3-2.Assembly 25
4.Operating explanation . 26
4-1.Reducer . 26
4-2.Hydraulic motor . 28
1.Action . 28
2.Working principle, operating explanation 28
2) Brake valve 29
2-1) In running (brake released) 29
2-2) When stopping, stalling (on braking) . 30
2-3) Self travelling 31
3) Parking brake 32
3-1) When travelling 32
3-2) When stopping 32
4) Explanation of auto two speeds switching . 33
4-1) At low speed . 33
4-2) At high seed . 34
4-3) Explanation for auto switching from high speed to low speed 35
SWING CIRCLE 36
SWING MACHINERY . 37
TRACK FRAME·RECOIL SPRING . 38
HYDRAULIC PIPING DRAWING 40
HYDRAULIC CIRCUIT DIAGRAM . 42
HYDRAULIC TANK 43
HYDRAULIC PUMP 44
MAIN PUMP HPV95+95 45
2) Control of discharge amount 49
LS VALVE . 50
PC VALVE . 50
LINE OIL FILTER . 63
CONTROL VALVE . 64
9-spool valve . 65
Main structure (1/3) 66
(2/3) . 67
(3/3) . 68
SAFETY-SUCTION VALVE FOR SERVICE VALVE 69
SELF-REDUCING PRESSURE VALVE 70
CLSS 75
OUTLINE OF CLSS . 75
Basic principle . 76
OPERATION FOR EACH FUNCTION AND VALVE 78
SYSTEM DIAGRAM 80
1.Unload valve 81
2.Main relief valve (2-Stage type) 82
3.Introduction of LS pressure . 84
4.LS bypass valve . 85
5.Pressure compensation valve . 86
6.Shuttle valve inside pressure compensation valve 89
7.Variable type pressure compensation valve (for service valve) . 90
8.Boom regeneration circuit . 92
9.Arm regeneration circuit 94
10.Pump merge-divider valve . 95
11.LS select valve 97
14.2-stage safety valve (installed to boom cylinder head) . 98
OPERATION OF CLSS SYSTEM AS A WHOLE . 99
1.When all work equipment is at neutral . 99
4.Bucket DUMP, power max. relief 102
5.Pump flow merged, boom RAISE 105
6.Pump flow merged, swing operated independently 108
7.Pump flow divided, travel operated independently 111
8.Pump flow merged, compound operation 114
SWING MOTOR .117
KMF90ABE-3 117
RELIEF VALVE PORTION 120
REVERSE PREVENTION VALVE 121
CENTER SWIVEL JOINT .123
VALVE CONTROL .124
WORK EQUIPMENT·SWING PPC VALVE 125
TRAVEL PPC VALVE 129
SERVICE PPC VALVE .133
SAFETY LOCK VALVE .136
PPC ACCUMULATOR .136
STRAIGHT-TRAVEL SYSTEM 137
SOLENOID VALVE 138
BOOM HOLDING VALVE 140
WORK EQUIPMENT 144
AIR CONDITIONER .145
ACTUAL ELECTRIC WIRING DIAGRAM 146
ELECTRICAL CIRCUIT DIAGRAM 150
ENGINE CONTROL SYSTEM .153
1.OPERATION OF SYSTEM .154
2.COMPONENTS OF SYSTEM 155
1) FUEL CONTROL DIAL 155
2) GOVERNOR MOTOR .156
Input and output signals 158
ELECTRONIC CONTROL SYSTEM FOR STD .159
CONTROL FUNCTION 159
TOTAL SYSTEM DIAGRAM 160
1.PUMP & ENGINE MUTUAL CONTROL FUNCTION .162
1) Control method in each mode 164
2) Pump control function when traveling .166
2.PUMP AND VALVE CONTROL FUNCTION .167
3.POWER MAXIMIZING·SWIFT SLOW-DOWN FUNCTION .170
4.AUTO-DECELERATION FUNCTION 172
5.AUTOMATIC WARNING-UP AND ENGINE OVERHEAT PREVENTION FUNCTION 174
6.SWING CONTROL FUNCTION 177
7.TRAVEL CONTROL FUNCTION .179
8.ACTIVE MODE FUNCTION 181
9.ACTIVE POWER UP FUNCTION 183
10.COMPONENTS OF SYSTEM .185
MACHINE MONITOR SYSTEM 191
MONITOR DISPLAY .192
OIL MAINTENANCE FUNCTION 194
SWITCHES .196
SENSORS .197
20 TESTING AND ADJUSTING 200
TABLE OF JUDGEMENT STANDARD VALUE .202
STANDARD VALUE TABLE FOR ELECTRICAL PARTS .213
TESTING AN ADJUSTING 222
TOOLS FOR TESTING， ADJUSTING， AND TROUBLESHOOTING .223
MEASURING ENGINE SPEED 224
MEASURING EXHAUST GAS COLOR .225
ADJUSTING VALVE CLEARANCE .226
MEASURING COMPRESSION PRESSURE 227
MEASURING BLOW-BY PRESSURE 227
TESTING AND ADJUSTING FUEL INJECTION TIMING .228
MEASURING ENGINE OIL PRESSURE .229
TESTING AND ADJUSTING ALTERNATOR BELT TENSION .230
TESTING AND ADJUSTING BELT TENSION FOR AIR CONDITIONER COMPRESSOR .230
MEASURING SPEED SENSOR 231
TESTING AND ADJUSTING GOVERNOR MOTOR LEVER STROKE .232
TESTING AND ADJUSTING HYDRAULIC PRESSURE IN WORK EQUIPMENT， SWING， TRAVEL CIRCUIT .233
TESTING AND ADJUSTING PC VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE) 236
TESTING AND ADJUSTING LS VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE) AND LS DIFFERENTIAL PRESSURE .238
TESTING AND ADJUSTING CONTROL CIRCUIT OIL PRESSURE 241
TESTING SOLENOID VALVE OUTPUT PRESSURE 242
MEASURING PPC VALVE OUTPUT PRESSURE .244
ADJUSTING WORK EQUIPMENT·SWING PPC VALVE 246
TESTING TRAVEL DEVIATION 247
TESTING LOCATIONS CAUSING HYDRAULIC DRIFT OF WORK EQUIPMENT .248
MEASURING OIL LEAKAGE .250
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT .252
TESTING CLEARANCE OF SWING CIRCLE BEARING .253
TESTING AND ADJUSTING TRACK SHOE TENSION 254
BLEEDING AIR 255
TROUBLESHOOTING .258
POINTS TO REMEMBER WHEN TROUBLESHOOTING .259
SEQUENCE OF EVENTS IN TROUBLESHOOTING .260
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE 261
CHECKS BEFORE TROUBLESHOOTING .269
CONNECTOR TYPES AND MOUNTING LOCATIONS 270
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS 274
EXPLANATION OF CONTROL MECHANISM FOR ELECTRICAL SYSTEM 285
DISPLAY METHOD AND SPECIAL FUNCTIONS OF MONITOR PANEL .286
METHOD OF USING JUDGEMENT TABLE .296
METHOD OF USING TROUBLESHOOTING CHARTS 298
DETAILS OF TROUBLESHOOTING AND TROUBLESHOOTING PROCEDURE 300
SERVICE CODE TABLE 305
TROUBLESHOOTING OF COMMUNICATION ABNORMALITY SYSTEM (N MODE) 307
N-1 [E218] Communications abnormality .308
TROUBLESHOOTING OF ENGINE THROTTLE·PUMP CONTROLLER (GOVERNOR CONTROL SYSTEM) (E MODE) .310
POINTS TO REMEMBER WHEN CARRYING OUT TROUBLESHOOTING OF ENGING THROTTLE·PUMP CONTROLLER SYSTEM 311
ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE 312
JUDGEMENT TABLE FOR ENGINE THROTTLE·PUMP CONTROLLER (GOVERNOR CONTROL SYSTEM)AND ENGINE RELATED PARTS .316
ELECTRICAL CIRCUIT DIAGRAM FOR E MODE SYSTEM 318
E-1 Abnormality in engine throttle·pump controller power source (controller LED is OFF) .320
E-2 [E308] Abnormality in fuel control dial input value is displayed 321
E-3 [E317] Abnormality (disconnection) in motor drive system is displayed .322
E-4 [E318] Abnormality (short circuit) in motor drive system is displayed .323
E-5 [E306] Abnormality in feedback potentiometer system is displayed 324
E-6 [E315] Abnormality (short circuit) in battery relay output system is displayed 325
E-7 [E316] Abnormality (step-out) in motor is displayed .326
E-8 Engine does not start .327
E-9 Engine speed is irregular .330
a) Idling speed is irregular 330
b) There is hunting .332
E-10 Lack of output (engine high idling speed is too low) .334
E-11 Engine does not stop .336
E-12 Defective operation of battery relay system (engine does not stop) .338
TROUBLESHOOTING OF ENGINE SYSTEM (S MODE) .340
METHOD OF USING TROUBLESHOOTING CHARTS 341
S-1 Starting performance is poor (starting always takes time) .345
S-2 Engine does not start .346
S-3 Engine does not pick up smoothly (follow-up is poor) 349
S-4 Engine stops during operations 350
S-5 Engine does not rotate smoothly (hunting) .351
S-6 Engine lacks output (no power) 352
S-7 Exhaust smoke is black (incomplete combustion) 353
S-8 Oil consumption is excessive (or exhaust smoke is blue) .354
S-9 Oil becomes contaminated quickly 355
S-10 Fuel consumption is excessive 356
S-11 Oil is in cooling water， or water spurts back， or water level goes down 357
S-12 Oil pressure caution lamp lights up (drop in oil pressure) .358
S-13 Oil level rises (water, fuel in oil) .359
S-14 Water temperature becomes too high (overheating) .360
S-15 Abnormal noise is made .361
S-16 Vibration is excessive .362
TROUBLESHOOTING OF ENGINE THROTTLE·PUMP CONTROLLER (PUMP CONTROL SYSTEM) (C MODE) .363
POINTS TO REMEMBER WHEN TROUBLESHOOTING PUMP CONTROLLER SYSTEM 364
ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE 365
JUDGEMENT TABLE FOR ENGINE THROTTLE·PUMP CONTROLLER (PUMP CONTROL SYSTEM) AND HYDRAULIC RELATED PARTS .373
C-1 Abnormality in controller power source system (controller LED is OFF) .377
C-2 [E232] Short circuit in PC-EPC solenoid system is displayed .378
C-3 [E233] Disconnection in PC-EPC solenoid system is displayed .379
C-4 [E203] Short circuit in swing brake solenoid system is displayed 380
C-5 [E213] Disconnection in swing brake solenoid system is displayed 382
C-6 [E204] Short circuit in pump merge/divider solenoid system is displayed .384
C-7 [E214] Disconnection in pump merge/divider solenoid system is displayed .385
C-8 [E207] Short circuit in active mode solenoid system is displayed 386
C-9 [E208] Disconnection in active mode solenoid system is displayed 387
C-10 [E206] Short circuit in travel speed solenoid system is displayed 388
C-11 [E216] Disconnection in travel speed solenoid system is displayed 389
C-12 [E205] Short circuit in 2-stage relief solenoid system is displayed 390
C-13 [E215] Disconnection in 2-stage relief solenoid system is displayed 391
C-14 [E217] Model selection input error is displayed 392
C-15 [E222] Short circuit in LS-EPC solenoid system is displayed 394
C-16 [E223] Disconnection in LS-EPC solenoid system is displayed 395
C-17 [E224] Abnormality in front pump pressure sensor system is displayed .396
C-18 [E225] Abnormality in rear pump pressure sensor system is displayed 397
C-19 [E226] Abnormality in pressure sensor power source system is displayed .398
C-20 [E227] Abnormality in engine speed sensor system is displayed 399
C-21 [E302] Short circuit in swing stroke limit solenoid system is displayed 400
C-22 [E303] Disconnection in swing stroke limit solenoid system is displayed 401
TROUBLESHOOTING OF ENGINE THROTTLE·PUMP CONTROLLER (INPUT SIGNAL SYSTEM) (F MODE) .402
F-1 Bit pattern 20-(1) Swing oil pressure switch does not light up 405
F-2 Bit pattern 20-(2) Travel oil pressure switch does not light up .406
F-3 Bit pattern 20-(3) Boom LOWER oil pressure switch does not light up .407
F-4 Bit pattern 20-(4) Boom RAISE oil pressure switch does not light up .408
F-5 Bit Pattern 20-(5) Arm IN oil pressure switch does not light up .409
F-6 Bit pattern 20-(6) Arm OUT oil pressure switch does not light up 410
F-7 Bit pattern 21-(1) Bucket CURL oil pressure switch does not light up 411
F-8 Bit pattern 21-(2) Bucket DUMP oil pressure switch does not light up 412
F-9 Bit pattern 21-(3) Swing lock switch does not light up 413
F-10 Bit pattern 22-(5) Kerosene mode connection does not light up 414
F-11 Bit pattern 22-(6) L. H. knob switch does not light up .415
TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE) .416
TABLE OF FAILURE MODES AND CAUSES FOR HYDRAULIC AND MECHANICAL SYSTEM (1/2) .417
PUMP MERGE/DIVIDER LOGIC 421
SOLENOID ACTUATION TABLE 422
H-1 Speeds of all work equipment, swing, travel are slow or lack power 423
H-2 There is excessive drop in engine speed， or engine stalls .425
H-3 No work equipment， travel， swing move .426
H-4 Abnormal noise generated (around pump) 426
H-5 Auto-deceleration does not work (PPC shuttle valve is equipped only in travel PPC valve) 427
H-6 Fine control ability is poor or response is poor 427
H-7 Boom is slow or lacks power .428
H-8 Arm is slow or lacks power 430
H-9 Bucket is slow or lacks power .432
H-10 Work equipment (boom, arm, bucket) does not move (but travel and swing are normal) .433
H-11 Excessive hydraulic drift 433
H-12 Excessive time lag (engine at low idling) 434
H-13 Other equipment moves when single circuit is relieved 434
H-14 Lack of power when pressure rises 435
H-15 In L/O， F/O modes, work equipment speed is faster than specified speed .436
H-16 In compound operations， work equipment with larger load is slow 436
H-17 In swing + boom RAISe， boom RAIES is slow 437
H-18 In swing + travel， travel speed drops excessively 437
H-19 Travel deviation .438
H-20 Travel speed is slow .439
H-21 Steering does not turn easily or lacks power .441
H-22 Travel speed does not switch or is faster than specified speed .443
H-23 Travel does not move(one side only) 443
H-24 Does not swing .444
H-25 Swing acceleration is poor or swing speed is slow 445
H-26 Excessive overrun when stopping swing 447
H-27 Excessive shock when stopping swing (one direction only) .448
H-28 Excessive abnormal noise when stopping swing .448
H-29 Excessive hydraulic drift of swing .449
H-30 Swing speed is faster than specified speed in L/O and F/O modes 450
TROUBLESHOOTING OF MACHINE MONITOR SYSTEM (M MODE) 451
ACTION TAKEN BY MONITOR PANEL WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE .453
ELECTRICAL CIRCUIT DIAGRAM FOR M MODE SYSTEM 455
M-1 [E101] Abnormality in error data is displayed [E102] Error in clock data is displayed 457
M-2 [E103] Short circuit in buzzer output or contact of 24V wiring harness with buzzer drive harness is displayed .458
M-3 [E104] Air cleaner clogging detected is displayed .459
M-4 [E108] Engine water temperature 105℃ detected is displayed 459
M-5 When starting switch is turned ON, none of lamps on monitor panel light up for 3 seconds 460
a) None of lamps on monitor panel light up 460
b) Some of lamps on monitor panel do not light up .460
M-6 When starting switch is turned ON, monitor panel lamps all stay lighted up and do not go out 462
M-7 When starting switch is turned ON, items lighted up on monitor panel are different from actual machine (model) 462
M-8 When starting switch is turned ON (engine stopped), basic check items flash .463
a) (coolant level) flashes 463
b) (engine oil level) flashes .464
c) (hydraulic oil level) flashes 465
M-9 Preheating is not being used but (preheating monitor) lights up .466
M-10 When starting switch is turned ON and engine is started， basic check items flash .467
a) Alternator system 467
b) Engine oil pressure system .468
M-11 When starting switch is turned ON (engine stopped), caution items, emergency items flash 469
a) Alternator system 469
b) Engine oil pressure sensor system 470
M-12 When starting switch is turned ON and engine is started, caution items, emergency items flash .471
a) (engine oil pressure) flashes 471
b) (coolant level) flashes 471
c) (battery charge) flashes .471
d) (coolant temperature) flashes 472
e) (fuel level) flashes .472
f) (air cleaner clogging) flahes 473
M-13 When starting switch is turned ON (engine stopped), buzzer does not sound for 1 second 474
M-14 No abnormality is displayed on monitor but buzzer sounds .474
M-15 Night lighting on monitor panel does not light up (liquid crystal display is normal) .475
M-16 Coolant temperature gauge does not rise 476
M-17 Coolant temperature gauge does not give any display (none of gauge lamps light up during operation) 476
M-18 Fuel level gauge always displays FULL 477
M-19 Fuel level gauge does not give display .477
M-20 Swing lock switch is turned ON (LOCK) but (swing lock monitor) does not light up .478
M-21 Swing prolix switch is turned ON (prolix), but (swing lock monitor) does not flash .478
M-22 Service meter does not advance while engine is running .479
M-23 When starting switch is at OFF and time switch is pressed， time and service meter are not displayed 479
M-24 Defective fuel level sensor system .480
M-25 Defective coolant temperature sensor system 481
M-26 Defective engine oil level sensor system .482
M-27 Defective coolant level sensor system 483
M-28 Defective hydraulic oil level sensor system 484
M-29 Wiper does not work, or switch is not being used but wiper is actuated .485
a) Wiper does not work 485
b) Wiper switch is not being operated but wiper is actuated .488
M-30 Washer motor does not work， or switch is not being used but washer motor is actuated .490
a) Washer motor does not work .490
b) Switch is not being operated but washer is actuated 491
30 DISASSEMBLY AND ASSEMBLY .492
METHOD OF USING MANUAL 494
STANDARD TIGHTENING TORQUE 495
PRECAUTIONS WHEN CARRYING OUT OPERATION .498
SPECIAL TOOL LIST .503
SKETCHES OF SPECIAL TOOLS .507
REMOVAL OF STARTING MOTOR ASSEMBLY 508
INSTALLATION OF STARTING MOTOR ASSEMBLY .508
BEMOVAL OF ALTERNATOR ASSEMBLY 509
INSTALLATION OF ALTERNATOR ASSEMBLY .510
REMOVAL OF AIR CONDITIONER COMPRESSOR ASSEMBLY 511
INSTALLATION OF AIR CONDITIONER COMPRESSOR ASSEMBLY .511
REMOVAL OF CONDENSER ASSEMBLY .512
INSTALLATION OF CONDENSER ASSEMBLY 512
REMOVAL OF AIR CONDITIONER CONDENSER ASSEMBLY .513
INSTALLATION OF AIR CONDITIONER CONDENSER ASSEMBLY 513
BEMOVAL OF DRY RECEIVER ASSEMBLY 514
INSTALLATION OF DRY RECEIVER ASSEMBLY .514
REMOVAL OF ENGINE OIL COOLER CORE ASSEMBLY 515
INSTALLATION OF ENGINE OIL COOLER CORE ASSEMBLY .515
REMOVAL OF FUEL INJECTION PUMP ASSEMBLY .516
INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY 519
REMOVAL OF FUEL INJECTION PUMP ASSEMBLY .521
INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY 524
REMOVAL OF WATER PUMP ASSEMBLY 526
INSTALLATION OF WATER PUMP ASSEMBLY .527
REMOVAL OF NOZZLE HOLDER ASSEMBLY .528
INSTALLATION OF NOZZLE HOLDER ASSEMBLY 528
REMOVAL OF TURBOCHARGER ASSEMBLY 529
INSTALLATION OF TURBOCHARGER ASSEMBLY .529
REMOVAL OF THERMOSTAT ASSEMBLY 530
INSTALLATION OF THERMOSTAT ASSEMBLY .531
REMOVAL OF GOVERNOR MOTOR ASSEMBLY 532
INSTALLATION OF GOVERNOR MOTOR ASSEMBLY .532
REMOVAL OF CYLINDER HEAD ASSEMBLY .533
INSTALLATION OF CYLINDER HEAD ASSEMBLY .538
REMOVAL OF CYLINDER HEAD ASSEMBLY .541
INSTALLATION OF CYLINDER HEAD ASSEMBLY 546
REMOVAL OF HYDRAULIC OIL COOLER ASSEMBLY 549
INSTALLATION OF HYDRAULIC OIL COOLER ASSEMBLY .549
REMOVAL OF HYDRAULIC OIL COOLER ASSEMBLY 550
INSTALLATION OF HYDRAULIC OIL COOLER ASSEMBLY .550
REMOVAL OF RADIATOR, HYDRAULIC OIL COOLER ASSEMBLY .551
INSTALLATION OF RADIATOR, HYDRAULIC OIL COOLER ASSEMBLY 553
REMOVAL OF RADIATOR, HYDRAULIC OIL COOLER ASSEMBLY .554
IINSTALLATION OF RADIATOR, HYDRAULIC OIL COOLER ASSEMBLY .556
REMOVAL OF ENGINE, MAIN PUMP ASSEMBLY .557
INSTALLATION OF ENGINE, MAIN PUMP ASSEMBLY 561
REMOVAL OF DAMPER ASSEMBLY 562
INSTALLATION OF DAMPER ASSEMBLY .562
REMOVAL OF FUEL TANK ASSEMBLY .563
INSTALLATION OF FUEL TANK ASSEMBLY 563
DISASSEMBLY OF CENTER SWIVEL JOINT ASSEMBLY .565
ASSEMBLY OF CENTER SWIVEL JOINT ASSEMBLY 565
REMOVAL OF FINAL DRIVE ASSEMBLY .566
INSTALLATION OF FINAL DRIVE ASSEMBLY 566
Main Points for disassembly and assembly of GM35VL 567
REMOVAL OF SPROCKET .620
INSTALLATION OF SPROCKET 620
REMOVAL OF SWING MOTOR， SWING MACHINERY ASSEMBLY 621
INSTALLATION OF SWING MOTOR, SWING MACHINERY ASSEMBLY .622
DISASSEMBLY OF SWING MACHINERY ASSEMBLY .623
ASSEMBLY OF SWING MACHINERY ASSEMBLY 627
REMOVAL OF REVOLVING FRAME ASSEMBLY .632
INSTALLATION OF REVOLVING FRAME ASSEMBLY 633
REMOVAL OF SWING CIRCLE ASSEMBLY 634
INSTALLATION OF SWING CIRCLE ASSEMBLY .635
REMOVAL OF IDLER·RECOIL SPRING ASSEMBLY .636
INSTALLATION OF IDLER·RECOIL SPRING ASSEMBLY 636
DISASSEMBLY OF RECOIL SPRING ASSEMBLY .637
ASSEMBLY OF RECOIL SPRING ASSEMBLY 638
DISASSEMBLY OF IDLER ASSEMBLY .639
ASSEMBLY OF IDLER ASSEMBLY 640
REMOVAL OF TRACK ROLLER ASSEMBLY 642
INSTALLATION OF TRACK ROLLER ASSEMBLY .642
DISASSEMBLY OF TRACK ROLLER ASSEMBLY 643
ASSEMBLY OF TRACK ROLLER ASSEMBLY .645
REMOVAL OF CARRIER ROLLER ASSEMBLY 647
INSTALLATION OF CARRIER ROLLER ASSEMBLY .647
DISASSEMBLY OF CARRIER ROLLER ASSEMBLY 648
ASSEMBLY OF CARRIER ROLLER ASSEMBLY .650
REMOVAL OF TRACK SHOE ASSEMBLY 652
INSTALLATION OF TRACK SHOE ASSEMBLY .652
REMOVAL OF HYDRAULIC TANK ASSEMBLY 653
INSTALLATION OF HYDRAULIC TANK ASSEMBLY .654
REMOVAL OF MAIN PUMP ASSEMBLY .655
INSTALLATION OF MAIN PUMP ASSEMBLY 657
REMOVAL OF MAIN PUMPINPUT SHAFT OIL SEAL 658
INSTALLATION OF MAIN PUMP INPUT SHAFT OIL SEAL 658
REMOVAL OF CONTROL VALVE ASSEMBLY .659
INSTALLATION OF CONTROL VALVE ASSEMBLY 661
DISASSEMBLY OF CONTROL VALVE ASSEMBLY (1/3) .662
ASSEMBLY OF CONTROL VALVE ASSEMBLY 667
DISASSEMBLY OF PUMP MERGE-DIVIDER VALVE ASSEMBLY 673
ASSEMBLY OF PUMP MERGE-DIVIDER VALVE ASSEMBLY .673
DISASSEMBLY OF MAIN RELIEF VALVE ASSEMBLY .674
ASSEMBLY OF MAIN RELIEF VALVE ASSEMBLY 674
REMOVAL OF PC VALVE ASSEMBLY 675
INSTALLATION OF PC VALVE ASSEMBLY .676
REMOVAL OF LS VALVE ASSEMBLY 677
INSTALLATION OF LS VALVE ASSEMBLY .677
REMOVAL OF PC, LS-EPC VALVE ASSEMBLY 678
INSTALLATION OF PC, LS-EPC VALVE ASSEMBLY .678
REMOVAL OF SOLENOID VALVE ASSEMBLY 679
INSTALLATION OF SOLENOID VALVE ASSEMBLY .679
REMOVAL OF WORK EQUIPMENT·SWING PPC VALVE ASSEMBLY 680
INSTALLATION OF WORK EQUIPMENT·SWING PPC VALVE ASSEMBLY .680
DISASSEMBLY OF WORK EQUIPMENT·SWING PPC VALVE ASSEMBLY 681
ASSEMBLY OF WORK EQUIPMENT·SWING PPC VALVE ASSEMBLY .682
REMOVAL OF TRAVEL PPC VALVE ASSEMBLY 683
INSTALLATION OF TRAVEL PPC VALVE ASSEMBLY .683
DISASSEMBLY OF TRAVEL PPC VALVE ASSEMBLY 684
ASSEMBLY OF TRAVEL PPC VALVE ASSEMBLY .685
REMOVAL OF BOOM LOCK VALVE ASSEMBLY .686
INSTALLATION OF BOOM LOCK VALVE ASSEMBLY 686
REMOVAL OF BOOM CYLINDER ASSEMBLY .687
INSTALLATION OF BOOM CYLINDER ASSEMBLY 688
BEMOVAL OF ARM CYLINDER ASSEMBLY 689
INSTALLATION OF ARM CYLINDER ASSEMBLY .690
REMOVAL OF BUCKET CYLINDER ASSEMBLY .691
INSTALLATION OF BUCKET CYLINDER ASSEMBLY 692
ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY .696
REMOVAL OF WORK EQUIPMENT ASSEMBLY 700
INSTALLATION OF WORK EQUIPMENT ASSEMBLY .701
REMOVAL OF BUCKET ASSEMBLY 702
INSTALLATION OF BUCKET ASSEMBLY .703
REMOVAL OF ARM ASSEMBLY .704
INSTALLATION OF ARM ASSEMBLY 705
REMOVAL OF BUCKET·ARM ASSEMBLY 706
INSTALLATION OF BUCKET·ARM ASSEMBLY .707
REMOVAL OF BOOM ASSEMBLY 708
INSTALLATION OF BOOM ASSEMBLY .709
REMOVAL OF OPERATOR‘S CAB ASSEMBLY 710
INSTALLATION OF OPERATOR’S CAB ASSEMBLY .711
REMOVAL OF COUNTERWEIGHT ASSEMBLY .712
INSTALLATION OF COUNTERWEIGHT ASSEMBLY 712
REMOVAL OF ENGINE THROTTLE·PUMP CONTROLLER ASSEMBLY .713
INSTALLATION OF ENGINE THROTTLE·PUMP CONTROLLER ASSEMBLY 713
REMOVAL OF CONTROL STAND CASE .714
INSTALLATION OF CONTROL STAND CASE 715
REMOVAL OF MONITOR ASSEMBLY .716
INSTALLATION OF MONITOR ASSEMBLY 716
40 MAINTENANCE STANDARD .717
SWING MACHINERY .718
SWING CIRCLE 720
FINAL DRIVE .721
TRACK FRAME·RECOIL SPRING .723
IDLER .724
CARRIER ROLLER 726
TRACK ROLLER 727
TRACK SHOE 728
HYDRAULIC PUMP 734
CONTROL VALVE .735
(1/6) .735
(2/6) .736
(3/6) .737
(4/6) .738
(5/6) .739
(6/6) .740
VARIABLE PRESSURE COMPENSATION VALVE 741
SAFETY-SUCTION VALVE FOR SERVICE VALVE 742
SELF-REDUCING PRESSURE VALVE 743
SWING MOTOR .744
WORK EQUIPMENT·SWING PPC VALVE 745
TRAVEL PPC VALVE 746
SERVICE PPC VALVE .747
EPC SOLENOID VALVE 748
CENTER SWIVEL JOINT .749
BOOM HOLDING VALVE 750
HYDRAULIC CYLINDER 751
WORK EQUIPMENT 755
DIMENSION OF WORK EQUIPMENT .757
90 OTHERS 761
Hydraulic circuit diagram .762
Electrical circuit diagrame (1/2) .763
Electrical circuit diagram (2/2) 764
1.Pump flow divided, one side in operation, and the other in neutral 765
2.Pump flow merged, arm dump, standard mode relief. (shut off control) 766
3.When pump flow divided, bucket”dump”, max. power relief .767
4.When pump flow merged, boom raise up 768
5.When pump flow merged, swing operation independently 769
6.When pump flow divided, straight travel .770
7.Pump flow merged, composite operation .771
Electrical circuit diagram for valve controller system 772
UNDER COVER .773

G.B 23/12/24