Complete service repair manuals for Komatsu Bulldozers D31A, D31E, D31P, D31PL, D31PLL, D31S, D31Q, D37E, D37P, with all the shop information to maintain, diagnose, repair, and rebuild like professional mechanics.
Komatsu Bulldozers D31A, D31E, D31P, D31PL, D31PLL, D31S, D31Q, D37E, D37P workshop service & repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
SEBM0114B01 – Bulldozer D31A-16, D31P-16 Shop Manual (SN25001&up).pdf
SEBM0114C04 – Bulldozer D31A,E,P,PL,PLL-17, D31P-17A,B Shop Manual (SN32001&up).pdf
SEBM001007 – Bulldozer D31E,P,PL,PLL,S,Q-20, D31P-20A, D37E-5, D37P-5A Shop Manual.pdf
SEBM01141805 – Bulldozer D31E,P,PL,PLL,S,Q-18, D31P-18A, D37E,P-2 Shop Manual.pdf
SRBM001007K – Бульдозер D31E,P,PL,PLL,S,Q-20 & D31P-20A & D37E-5 & D37P-5A Заводская инструкция.pdf
PRODUCT DETAILS:
Total Pages: 2,653 pages
File Format: PDF
Language: English
MAIN SECTIONS
01 GENERAL
10 STRUCTURE AND FUNCTION
20 TESTING AND ADJUSTING
30 DISASSEMBLY AND ASSEMBLY
40 MAINTENANCE STANDARD
90 OTHERS
TABLE OF CONTENTS
10 ENGINE
20 POWER TRAIN
30 UNDERCARRIAGE
60 HYDRAULIC SYSTEM
70 WORK EQUIPMENT
80 ELECTRICAL SYSTEM
SEBM001007 – Bulldozer D31E,P,PL,PLL,S,Q-20, D31P-20A, D37E-5, D37P-5A Shop Manual….2
CONTENTS….3
01 GENERAL ….26
SPECIFICATION DRAWINGS….27
SPECIFICATIONS….39
WEIGHT TABLE….63
LIST OF LUBRICANT AND WATER….75
10 STRUCTURE AND FUNCTION ….80
POWER TRAIN SYSTEM ….81
POWER TRAIN SKELETON ….82
POWER TRAIN HYDRAULIC PIPING ….85
POWER TRAIN HYDRAULIC CIRCUIT DIAGRAM ….87
POWER TRAIN HYDRAULIC SYSTEM ….88
DAMPER AND UNIVERSAL JOINT ….89
TRANSMISSION CONTROL….90
TRANSMISSION PUMP ….95
HYDROSHIFT TRANSMISSION….97
TRANSMISSION CONTROL VALVE ….106
STEERING CONTROL….114
STEERING CYLINDER ….118
BRAKE CYLINDER….119
PPC VALVE ….120
BEVEL GEAR SHAFT AND STEERING CLUTCH ….132
STEERING BRAKE….134
FINAL DRIVE ….136
TRACK FRAME ….137
MAIN FRAME AND SUSPENSION ….139
HYDRAULIC PIPING ….141
HYDRAULIC CIRCUIT DIAGRAM ….148
HYDRAULIC CIRCUIT SYSTEM ….149
HYDRAULIC CONTROL ….156
HYDRAULIC TANK AND FILTER ….158
HYDRAULIC CONTROL VALVE ….160
ANGLE SELECTOR VALVE ….166
SUCTION SAFETY VALVE ….169
WORK EQUIPMENT ….170
ELECTRICAL CIRCUIT DIAGRAM….173
ENGINE CONTROL….176
MONITOR SYSTEM ….177
SENSORS ….178
20 TESTING AND ADJUSTING ….181
STANDARD VALUE TABLE FOR ENGINE ….182
STANDARD VALUE TABLE FOR CHASSIS ….184
STANDARD VALUE TABLE FOR ELECTRICAL SYSTEM ….193
TABLE OF TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING ….194
MEASURlNG ENGINE SPEED ….196
MEASURING EXHAUST COLOR ….198
ADJUSTING VALVE CLEARANCE ….199
MEASURING COMPRESSION PRESSURE ….202
MEASURING BLOW-BY PRESSURE ….204
TESTING AND ADJUSTING FUEL INJECTION TIMING ….206
BLEEDING AIR FROM FUEL CIRCUIT ….210
MEASURING ENGINE OIL PRESSURE ….211
TESTING AND ADJUSTING FAN BELT TENSION ….214
MEASURING POWER TRAIN OIL PRESSURE ….215
ADJUSTING PPC VALVE ….216
BLEEDING AIR FROM STEERING CIRCUIT ….217
MEASURING AND ADJUSTING WORK EQUIPMENT MAIN RELIEF PRESSURE ….218
BLEEDING AIR FROM HYDRAULIC CYLINDERS ….220
BLEEDING AIR FROM ANGLE CYLINDER CIRCUIT ….221
ADJUSTING FUEL CONTROL CABLE ….222
ADJUSTING FUEL CONTROL LEVER ….223
PROCEDURE FOR ADJUSTING ENGINE STOP MOTOR CABLE ….224
ADJUSTING ENGINE STOP SOLENOID LINKAGE ….226
ADJUSTING TRANSMISSION CONTROL LINKAGE ….228
ADJUSTING TRAVEL OF INCHING PEDAL ….234
ADJUSTING BRAKE PEDAL, STEERING BRAKE CYLINDER ….235
ADJUSTING BRAKE LINING CLEARANCE ….238
TROUBLESHOOTING….239
POINTS TO REMEMBER WHEN TROUBLESHOOTING ….240
SEQUENCE OF EVENTS IN TROUBLESHOOTING ….241
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE ….242
HANDLING CONNECTORS….249
CHECKS BEFORE TROUBLESHOOTING ….250
TROUBLESHOOTING OF ENGINE (S MODE)….251
METHOD OF USING TROUBLESHOOTING CHARTS ….252
D31E-20 Serial No.: 42001-42713, D31P-20A Serial No.: 45001-47616, D31P, PL-20 Serial No.: 45001-47616, D37E-5 Serial No.: 3….256
S-1 Starting performance is poor (Starting always takes time) ….256
S-2 Engine does not start ….257
S-3 Engine does not pick up smoothly (Follow-up is poor) ….260
S-4 Engine stops during operations ….261
S-5 Engine does not rotate smoothly ….262
S-6 Engine lacks output (no power) ….263
S-7 Exhaust gas is black (incomplete combustion) ….264
S-8 Oil consumption is excessive (or exhaust gas is blue)….265
S-9 Oil becomes contaminated quickly ….266
S-10 Fuel consumption is excessive ….267
S-11 Oil is in cooling water, or water spurts back, or water level goes down ….268
S-12 Oil pressure lamp lights up (drop in oil pressure) ….269
S-13 Oil level rises….270
S-14 Water temperature becomes too high (overheating) ….271
S-15 Abnormal noise is made….272
S-16 Vibration is excessive….273
D31E-20 Serial No.: 42714 and up, D31P-20A Serial No.: 47617 and up, D31P, PL-20 Serial No.: 47617 and up, D37E-5 Serial No.: 37….274
S-1 Starting performance is poor (starting always takes time) ….274
S-2 Engine does not start ….275
(1) Engine does not turn….275
(2) Engine turns but no exhaust smoke comes out (fuel is not being injected)….276
(3) Exhaust smoke comes out but engine does not start (Fuel is being injected)….277
S-3 Engine does not pick up smoothly (follow-up is poor) ….278
S-4 Engine stops during operations ….279
S-5 Engine does not rotate smoothly (hunting) ….280
S-6 Engine lacks output (no power) ….281
S-7 Exhaust smoke is black (incomplete combustion) ….282
S-8 Oil consumption is excessive (or exhaust smoke is blue) ….283
S-9 Oil becomes contaminated quickly ….284
S-10 Fuel consumption is excessive ….285
S-11 Oil is in cooling water, or water spurts back, or water level goes down ….286
S-12 Oil pressure caution lamp lights up (drop in oil pressure) ….287
S-13 Oil level rises (water, fuel in oil) ….288
S-14 Water temperature becomes too high (overheating) ….289
S-15 Abnormal noise is made ….290
S-16 Vibration is excessive ….291
TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM (H MODE)….293
METHOD OF USING TROUBLESHOOTING CHART….294
TABLE OF FAILURE MODES AND CAUSES….296
H-1. Machine does not start ….296
H-2. Drawbar pull is weak, travel speed is slow….297
H-3. Excessive time lag when starting or shifting gear checks before troubleshooting ….298
H-4. Steering does not work properly ….299
H-5. Machine moves when engine is started ….300
H-6. Excessive shock when starting or shifting gear ….300
H-7. Level of oil in transmission case or bevel gear case changes ….300
H-8. Lack of blade lifting force, speed ….301
H-9. Impossible to raise blade or push up chassis ….302
H-10. Excessive hydraulic drift of blade ….303
H-11. Blade moves up and down during leveling operations (control lever at HOLD) ….303
H-12. Blade goes down ….303
H-13. Blade tilt lacks power, speed, impossible to push up chassis with tilt ….304
H-14. Blade cannot be tilted ….305
H-15. Excessive hydraulic drift of blade tilt ….306
H-16. Blade angle lacks power, speed (applicable to power angle, power tilt dozer) ….307
H-17. Blade cannot be angled (applicable to power angle tiltdozer) ….308
H-18. When blade is angled, blade returns to straight position or shakes during operations (control lever at HOLD) ….309
H-19. Lift arm lacks lifting power, speed ….310
H-20. Impossible to raise lift arm, impossible to raise chassis ….311
H-21. Excessive hydraulic drift of lift arm ….312
H-22. Bucket tilt back lacks power, speed ….313
H-23. Impossible to tilt back bucket ….314
H-24. Impossible to dump bucket, impossible to raise chassis with dump cylinder ….315
H-25. Bucket dump speed is slow ….316
H-26. Excessive hydraulic drift of bucket dump circuit ….317
H-27. Bucket moves up and down along ground surface during leveling operations, but lift arm moves irregularly [control lever at….318
H-28. Lift arm goes down ….318
H-29. Bucket moves irregularly during leveling operations (control lever at HOLD) ….318
H-30. Bucket dumps ….318
H-31. When bucket is dumped to maximum, it is impossible to raise lift arm ….318
H-32. Work equipment control levers are heavy ….319
30 DISASSEMBLY AND ASSEMBLY ….321
METHOD OF USING MANUAL….323
PRECAUTIONS WHEN CARRYING OUT OPERATION….324
SPECIAL TOOL LIST….326
STARTING MOTOR….330
REMOVAL AND INSTALLATION….330
ALTERNATOR….332
REMOVAL AND INTALLATION….332
ENGINE OIL COOLER CORE….334
REMOVAL AND INSTALLATION….334
FUEL INJECTION PUMP….336
REMOVAL ….336
INSTALLATION ….337
WATER PUMP….344
REMOVAL AND INSTALLATION….344
THERMOSTAT….346
REMOVAL AND INSTALLATION….346
NOZZLE HOLDER….348
REMOVAL AND INSTALLATION….348
TURBOCHARGER….351
REMOVAL ….351
INSTALLATION….353
CYLINDER HEAD….354
REMOVAL ….354
INSTALLATION ….355
RADIATOR GUARD….366
REMOVAL ….366
INSTALLATION ….367
RADIATOR….368
REMOVAL….368
INSTALLATION ….369
RADIATOR, RADIATOR GUARD….370
REMOVAL….370
INSTALLATION….373
ENGINE….374
REMOVAL ….374
INSTALLATION….375
DAMPER….380
REMOVAL….380
INSTALLATION….381
HYDROSHIFT TRANSMISSION….386
REMOVAL….386
INSTALLATION….388
DISASSEMBLY….389
ASSEMBLY ….401
MODULATING VALVE AND PUMP….415
REMOVAL AND INSTALLATION….415
MODULATING VALVE….416
DISASSEMBLY….416
ASSEMBLY ….417
SELECTOR AND INCHING VALVE….418
REMOVAL AND INSTALLATION….418
DISASSEMBLY ….419
ASSEMBLY ….420
MAIN RELIEF VALVE….421
REMOVAL AND INSTALLATION….421
STEERING PPC VALVE….422
REMOVAL AND INSTALLATION….422
DISASSEMBLY AND ASSEMBLY….425
STEERING CLUTCH….430
REMOVAL ….430
INSTALLATION ….432
DISASSEMBLY ….433
ASSEMBLY ….435
BEVEL GEAR SHAFT AND BEVEL GEAR….438
REMOVAL ….438
INSTALLATION ….441
FINAL DRIVE FIRST PINION….445
REMOVAL AND INSTALLATION….445
FINAL DRIVE….447
DISASSEMBLY ….447
ASSEMBLY ….450
TRACK FRAME….455
REMOVAL AND INSTALLATION….455
RECOIL SPRING….459
DISASSEMBLY ….459
ASSEMBLY ….460
IDLER….461
REMOVAL AND INSTALLATION….461
DISASSEMBLY ….462
ASSEMBLY….464
CARRIER ROLLER….466
REMOVAL AND INSTALLATION….466
DISASSEMBLY….467
ASSEMBLY ….468
TRACK ROLLER….469
REMOVAL AND INSTALLATION….469
DISASSEMBLY ….470
ASSEMBLY ….471
TRACK SHOE….479
REMOVAL AND INSTALLATION….479
HYDRAULIC PUMP….480
REMOVAL AND INSTALLATION….480
HYDRAULIC CONTROL VALVE….483
REMOVAL AND INSTALLATION….483
DISASSEMBLY AND ASSEMBLY….486
BLADE LIFT CYLINDER ….500
REMOVAL AND INSTALLATION (D13E, P-20, D31P-20A, D37E-5, D37P-5A)….500
(D31PL, PLL-20)….501
BLADE TILT CYLINDER ….502
REMOVAL AND INSTALLATION (D31 E, P-20, D31 P-20A. D37E-5, D37P-5A)….502
(D31 PL, PLL-20)….503
BLADE ANGLE CYLINDER ….504
REMOVAL AND INSTALLATION (D31 E, P-20, D31 P-20A. D37E-5, D37P-5A)….504
BUCKET LIFT CYLINDER….505
REMOVAL AND INSTALLATION (D31S, Q-20)….505
BUCKET DUMP CYLINDER….506
(D31S, Q-20)….506
HYDRAULIC CYLINDER….507
DISASSEMBLY….507
ASSEMBLY ….508
WORK EQUIPMENT….510
REMOVAL AND INSTALLATION (D31 E, P-20, D31 P-20A, D37E-5, D37P-5A)….510
(D31PL, PLL-20)….511
BLADE….512
REMOVAL AND INSTALLATION (D31 E, P-20, D31 P-20A, D37E-5, D37P-5A)….512
(D31PL, PLL-20)….513
WORK EQUIPMENT….514
REMOVAL AND INSTALLATION (D31S. Q-20)….514
BUCKET….515
REMOVAL AND INSTALLATION (D31S, Q-20)….515
OPERATOR’S SEAT FRAME….516
REMOVAL ….516
INSTALLATlON….517
40 MAINTENANCE STANDARD ….519
DAMPER AND UNIVERSAL JOINT ….520
HYDROSHIFT TRANSMISSION ….522
TRANSMISSION CONTROL VALVE ….524
TRANSMISSION AND STEERING PUMP ….526
PPC VALVE ….527
STEERING CYLINDER ….530
BEVEL GEAR SHAFT ….531
STEERING CLUTCH ….532
STEERING BRAKE ….534
FINAL DRIVE ….536
TRACK FRAME ….538
IDLER CUSHION ….540
IDLER ….542
TRACK ROLLER ….544
CARRIER ROLLER ….547
TRACK (LUBRICATED TRACK LINK) D31E, P, PL, PLL-20, D31P-20A, D37E-5, D37P-5A….548
TRACK (DRY TYPE TRACK LINK) D31E, P, PL, PLL-20, D31P-20A, D37E-5, D37P-5A….550
TRACK (LUBRICATED TRACK LINK) D31S, Q-20….556
TRACK (DRY TYPE TRACK LINK) D31S, Q-20….558
HYDRAULIC PUMP….560
HYDRAULIC CONTROL VALVE ….562
HYDRAULIC CYLINDER….568
WORK EQUIPMENT ….574
90 OTHERS ….581
TRIMMING DOZER….583
CONTENTS ….584
GENERAL ….585
SPECIFICATION DRAWING….585
SPECIFICATIONS ….588
WEIGHT TABLE ….592
TABLE OF FUEL, COOLANT AND LUBRICANTS ….594
STRUCTURE AND FUNCTION ….596
POWER TRAIN HYDRAULIC PIPING ….596
TRANSMISSION CONTROL….598
STEERING CONTROL ….602
PPC VALVE ….604
TRACK FRAME ….616
HYDRAULIC PIPING ….618
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM ….620
WORK EQUIPMENT HYDRAULIC SYSTEM DIAGRAM ….621
WORK EQUIPMENT CONTROL ….622
WORK EQUIPMENT CONTROL VALVE ….624
TRIMMING DOZER….628
ELECTRICAL WIRING DIAGRAM….631
ENGINE CONTROL….632
MAINTENANCE STANDARD ….634
PPC VALVE ….634
TRACK FRAME ….636
IDLER CUSHION ….638
IDLER ….640
TRACK ROLLER ….644
CARRIER ROLLER ….646
TRACK….648
WORK EQUIPMENT CONTROL VALVE ….660
HYDRAULIC CYLINDER ….664
TRIMMING DOZER….666
SEBM01141805 – Bulldozer D31E,P,PL,PLL,S,Q-18, D31P-18A, D37E,P-2 Shop Manual….673
COVER….673
CONTENTS….674
10 ENGINE….693
12 TESTING AND ADJUSTING….693
TESTING AND ADJUSTING DATA….694
TOOL LIST FOR TESTING AND ADJUSTING….696
ADJUSTING VALVE CLEARANCE….697
MEASURING EXHAUST GAS COLOR….698
MEASURING COMPRESSION PRESSURE….699
MEASURING BLOW-BY PRESSURE….700
ADJUSTING FUEL INJECTION TIMING….701
TESTING AND ADJUSTING FAN BELT TENSION….702
BLEEDING AIR FROM FUEL CIRCUIT….702
ADJUSTING FUEL CONTROL LEVER….703
13 DISASSEMBLY AND ASSEMBLY….704
STARTING MOTOR….705
REMOVAL AND INSTALLATION….705
ALTERNATOR….705
REMOVAL AND INSTALLATION….705
WATER PUMP….705
REMOVAL AND INSTALLATION….705
FUEL INJECTION PUMP….707
REMOVAL AND INSTALLATION….707
NOZZLE HOLDER….707
REMOVAL AND INSTALLATION….707
CYLINDER HEAD….709
REMOVAL….709
INSTALLATION….711
RADIATOR GUARD….715
REMOVAL AND INSTALLATION….715
RADIATOR….717
REMOVAL AND INSTALLATION….717
THERMOSTAT….717
REMOVAL AND INSTALLATION….717
ENGINE….719
REMOVAL….719
INSTALLATION….721
20 POWER TRAIN….723
21 STRUCTURE AND FUNCTION….723
GENERAL….724
POWER TRAIN HYDRAULIC SYSTEM (D31E, P, PL, PLL-18, D31P-18A, D37E, P-2)….726
POWER TRAIN HYDRAULIC CIRCUIT DIAGRAM (D31E, P, PL, PLL-18, D31P-18A, D37E,P-2)….727
POWER TRAIN HYDRAULIC SYSTEM (D31S, Q-18)….729
POWER TRAIN HYDRAULIC CIRCUIT DIAGRAM (D31S, Q-18)….730
DAMPER AND UNIVERSAL JOINT….731
HYDROSHIFT TRANSMISSION….732
TRANSMISSION CONTROL….739
HYDROSHIFT TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM….740
TRANSMISSION CONTROL VALVE….742
TRANSMISSION PUMP….749
BEVEL GEAR SHAFT AND STEERING CLUTCH….750
STEERING CONTROL (D31E, P, PL, PLL-18, D31P-18A, D37E,P-2)….752
STEERING CONTROL (D31S, Q-18)….753
STEERING HYDRAULIC PIPING….754
STEERING HYDRAULIC SYSTEM (D31E, P, PL, PLL-18, D31P-18A, D37E,P-2)….757
STEERING HYDRAULIC CIRCUIT DIAGRAM (D31E, P, PL, PLL-18, D31P-18A, D37E,P-2)….757
STEERING HYDRAULIC SYSTEM (D37E, P-2)….758
STEERING HYDRAULIC CIRCUIT DIAGRAM (D37E, P-2)….758
STEERING HYDRAULIC SYSTEM (D31S, Q-18)….759
STEERING HYDRAULIC CIRCUIT DIAGRAM (D31S, Q-18)….759
STEERING CONTROL VALVE (D31E, P, PL, PLL-18, D31P-18A, D37E, P-2)….760
STEERING CONTROL VALVE (D31S, Q-18)….761
STEERING BOOSTER CYLINDER….766
STEERING BRAKE….768
FINAL DRIVE….770
22 TESTING AND ADJUSTING….771
STANDARD FOR TESTING AND ADJUSTING….772
TESTING AND ADJUSTING TOOL LIST….773
MEASURING OIL TEMPERATURE….774
MEASURING OIL PRESSURE….775
ADJUSTING LINKAGE….777
ADJUSTING GEAR SHIFT LEVER CONTROL LINKAGE….777
ADJUSTING INCHING CONTROL LINKAGE….778
ADJUSTING STEERING CONTROL LINKAGE….779
TROUBLESHOOTING….783
1. MACHINE DOES NOT MOVE OFF….784
2. DRAWBAR-PULL IS SMALL OR TRAVEL SPEED IS LOW….785
3. TIME LAG IS EXCESSIVE WHEN MOVING OFF OR GEARSHIFTING….786
4. WHEN ENGINE IS STARTED, MACHINE MOVES….787
5. MACHINE SHOCK IS EXCESSIVE WHEN MOVING OFF OR GEARSHIFTING….787
6. OIL QUANTITY IN TRANSMISSION AND BEVEL GEAR CASE FLUCTUATES….787
23 DISASSEMBLY AND ASSEBMLY….788
DAMPER….789
REMOVAL AND INSTALLATION….789
HYDROSHIFT TRANSMISSION….791
REMOVAL….791
INSTALLATION….793
DISASSEMBLY….795
ASSEMBLY….809
MODULATING VALVE….823
REMOVAL AND INSTALLATION….823
DISASSEMBLY AND ASSEMBLY….825
SELECTOR AND INCHING VALVE….823
REMOVAL AND INSTALLATION….823
DISASSEMBLY AND ASSEMBLY….827
STEERING VALVE….829
REMOVAL AND INSTALLATION….829
DISASSEMBLY AND ASSEMBLY….829
STEERING CLUTCH….831
REMOVAL….831
INSTALLATION….833
DISASSEMBLY….837
ASSEMBLY….839
BEVEL GEAR SHAFT AND BEVEL GEAR….843
REMOVAL….843
INSTALLATION….845
FINAL DRIVE FIRST PINION….849
REMOVAL AND INSTALLATION….849
FINAL DRIVE….851
DISASSEMBLY….851
ASSEMBLY….855
SPROCKET….859
REMOVAL AND INSTALLATION….859
24 MAINTENANCE STANDARD….861
DAMPER AND UNIVERSAL JOINT….862
TRANSMISSION AND STEERING PUMP….863
HYDROSHIFT TRANSMISSION….864
TRANSMISSION CONTROL VALVE….866
BEVEL GEAR SHAFT….868
STEERING CLUTCH….869
STEERING CONTROL VALVE (D31E, P, PL, PLL-18, D31P-18A, D37E, P-2)….871
STEERING CONTROL VALVE (D31S, Q-18)….872
STEERING BOOSTER CYLINDER….873
STEERING BRAKE….875
FINAL DRIVE….876
30 UNDERCARRIAGE….878
31 STRUCTURE AND FUNCTION….878
TRACK (DRY TYPE TRACK LINK) (D31E, P, PL, PLL-18, D31P-18A, D37E, P-2)….879
TRACK (LUBRICATED TRACK LINK) (D31E, P, PL, PLL-18, D31P-18A, D37E, P-2)….880
TRACK (DRY TYPE TRACK LINK) (D31S, Q-18)….881
TRACK (LUBRICATED TRACK LINK) (D31S, Q-18)….882
TRACK GROUP….883
IDLER….886
IDLER CUSHION….887
TRACK ROLLER….889
CARRIER ROLLER….889
MAIN FRAME AND SUSPENSION….890
33 DISASSEMBLY AND ASSEMBLY….892
TRACK FRAME….893
REMOVAL AND INSTALLATION….893
RECOIL SPRING….893
REMOVAL AND INSTALLATION….893
DISASSEMBLY AND ASSEMBLY….895
IDLER….897
REMOVAL AND INSTALLATION….897
CARRIER ROLLER….897
REMOVAL AND INSTALLATION….897
TRACK ROLLER….899
REMOVAL AND INSTALLATION….899
TRACK SHOE….899
REMOVAL AND INSTALLATION….899
34 MAINTENANCE STANDARD….901
TRACK (DRY TYPE TRACK LINK) (D31E, P, PL, PLL-18, D31P-18A, D37E, P-2)….902
TRACK (LUBRICATED TRACK LINK) (D31E, P, PL, PLL-18, D31P-18A, D37E, P-2)….904
TRACK (DRY TYPE TRACK LINK) (D31S, Q-18)….906
TRACK (LUBRICATED TRACK LINK) (D31S, Q-18)….908
TRACK FRAME….910
IDLER CUSHION….912
IDLER….914
TRACK ROLLER….916
CARRIER ROLLER….917
60 HYDRAULIC SYSTEM….918
61 STRUCTURE AND FUNCTION….918
HYDRAULIC PIPING (D31E-18, D31P-18A, D37E, P-2)….919
HYDRAULIC CONTROL (D31E-18, D31P-18A, D37E, P-2)….920
HYDRAULIC CIRCUIT SYSTEM (D31E-18, D31P-18A, D37E, P-2)….921
HYDRAULIC CIRCUIT DIAGRAM (D31E-18, D31P-18A, D37E, P-2)….922
HYDRAULIC PIPING (D31P, PL, PLL-18)….923
HYDRAULIC CONTROL (D31P, PL, PLL-18)….924
HYDRAULIC CIRCUIT SYSTEM (D31P, PL, PLL-18)….925
HYDRAULIC CIRCUIT DIAGRAM (D31P, PL, PLL-18)….926
HYDRAULIC PIPING (D31S, Q-18)….927
HYDRAULIC CONTROL (D31S, Q-18)….928
HYDRAULIC CIRCUIT SYSTEM (D31S, Q-18)….929
HYDRAULIC CIRCUIT DIAGRAM (D31S, Q-18)….930
HYDRAULIC TANK AND FILTER….931
HYDRAULIC PUMP….932
HYDRAULIC CONTROL VALVE (D31E-18, D31P-18A, D37E, P-2)….933
HYDRAULIC CONTROL VALVE (D31P, PL, PLL-18)….935
HYDRAULIC CONTROL VALVE (D31S, Q-18)….937
HYDRAULIC LEVER OPERATION (D31E, P, PL-18, D31P-18A, D37E, P-2)….942
HYDRAULIC LEVER OPERATION (D31S, Q-18)….948
HYDRAULIC CYLINDER (D31E-18, D31P-18A, D37E, P-2)….952
HYDRAULIC CYLINDER (D31P, PL, PLL-18)….954
HYDRAULIC CYLINDER (D31S, Q-18)….956
62 TESTING AND ADJUSTING….958
STANDARD FOR TESTING AND ADJUSTING….959
TESTING AND ADJUSTING TOOL LIST….962
MEASURING AND ADJUSTING OIL PRESSURE….963
MEASURING OIL TEMPERATURE….964
BLEEDING AIR FROM ANGLE CYLINDER CIRCUIT….965
TROUBLESHOOTING….966
1. BLADE LACKS LIFTING POWER AND LIFTING SPEED IS SLOW….967
2. BLADE DOES NOT RISE, THE FRONT OF MACHINE CANNOT BE RAISED OFF GROUND WHEN LOWERING THE BLADE….968
3. HYDRAULIC DRIFT OF BLADE LIFT CYLINDER IS EXCESSIVE….969
4. BLADE MOVES UNSTEADILY WHEN LEVELING THE GROUND. (CONTROL LEVER AT HOLD)….970
5. BLADE LOWERS UNDER THE FOLLOWING CONDITIONS….970
6. BLADE LACKS TILTING POWER, BLADE TILTING SPEED IS SLOW. THE MACHINE CANNOT BE RAISED OFF GROUND BY BLADE TILTING POWER….971
7. BLADE TILT CYLINDER DOES NOT MOVE (TILTING IS IMPOSSIBLE)….972
8. HYDRAULIC DRIFT OF BLADE TILT CYLINDER IS EXCESSIVE….973
9. BLADE LACKS ANGLING POWER, BLADE ANGLING SPEED IS SLOW (FOR POWER ANGLE AND TILTDOZER)….974
10. BLADE ANGLE CYLINDER DOES NOT MOVE (ANGLING IS IMPOSSIBLE) (FOR POWER ANGLE AND TILTDOZER)….975
11. BLADE RETURNS STRAIGHTLY OR MOVES UNSTEADILY WHEN LOADING BY ANGLING (CONTROL LEVER AT HOLD) (FOR POWER ANGLE AND TILTDOZER)….976
12. LIFT ARM LACKS LIFTING POWER AND LIFTING SPEED IS SLOW….977
13. LIFT ARM DOES NOT RISE, THE FRONT OF MACHINE CANNOT BE RAISED OFF GROUND WHEN LOWERING THE BUCKET….978
14. HYDRAULIC DRIFT OF BUCKET LIFT CYLINDER IS EXCESSIVE….979
15. BUCKET LACKS TILT BACK POWER AND BUCKET TILT SPEED IS SLOW….980
16. BUCKET DUMP CYLINDER DOES NOT MOVE (BUCKET TILT BACK IS IMPOSSIBLE)….981
17. BUCKET DUMP CYLINDER DOES NOT MOVE (DUMPING IS IMPOSSIBLE), MACHINE CANNOT BE RAISED OFF GROUND BY THE DUMP CYLINDER….982
18. BUCKET DUMP SPEED IS SLOW….983
19. HYDRAULIC DRIFT OF BUCKET DUMP CYLINDER IS EXCESSIVE….984
20. BUCKET MOVES UP AND DOWN ALONG GROUND AND LIFT ARM MOVES UNSTEADILY WHEN LEVELING THE GROUND. (CONTROL LEVER AT HOLD)….985
21. LIFT ARM LOWERS UNDER THE FOLLOWING CONDITIONS….985
22. BUCKET MOVES UNSTEADILY WHEN LEVELING THE GROUND WITH MACHINE TRAVELING IN REVERSE.(CONTROL LEVER AT HOLD)….985
23. BUCKET DUMPS….985
24. LIFT ARM CANNOT BE RAISED WHEN BUCKET DUMPS FULLY….985
25. OPERATING FORCE OF WORK EQUIPMENT CONTROL LEVER IS HEAVY….986
63 DISASSEMBLY AND ASSEMBLY….987
HYDRAULIC PUMP….988
REMOVAL AND INSTALLATION….988
MAIN RELIEF VALVE….988
REMOVAL AND INSTALLATION….988
HYDRAULIC CONTROL VALVE….988
REMOVAL AND INSTALLATION….988
DISASSEMBLY (D31E-18, D31P-18A, D37E, P-2)….990
ASSEMBLY (D31E-18, D31P-18A, D37E, P-2)….992
DISASSEMBLY (D31P, PL, PLL-18)….994
ASSEMBLY (D31P, PL, PLL-18)….996
DISASSEMBLY (D31S, Q-18)….998
ASSEMBLY (D31S, Q-18)….1000
BLADE LIFT CYLINDER….1002
REMOVAL AND INSTALLATION….1002
BLADE TIFT CYLINDER….1002
REMOVAL AND INSTALLATION….1002
BLADE ANGLE CYLINDER….1004
REMOVAL AND INSTALLATION….1004
BUCKET LIFT CYLINDER….1004
REMOVAL AND INSTALLATION….1004
BUCKET DUMP CYLINDER….1004
REMOVAL AND INSTALLATION….1004
HYDRAULIC CYLINDER….1006
DISASSEMBLY….1006
ASSEMBLY….1006
64 MAINTENANCE STANDARD….1008
HYDRAULIC CONTROL VALVE (3-SPOOL) (D31E-18, D31P-18A, D37E, P-2)….1009
HYDRAULIC CONTROL VALVE (D31P, PL, PLL-18)….1011
HYDRAULIC CONTROL VALVE (D31S, Q-18)….1013
HYDRAULIC CYLINDER (D31P, PL, PLL-18)….1015
HYDRAULIC CYLINDER (D31E-18, D31P-18A, D37E, P-2)….1017
HYDRAULIC CYLINDER (D31S, Q-18)….1019
HYDRAULIC PUMP….1020
70 WORK EQUIPMENT….1021
71 STRUCTURE AND FUNCTION….1021
POWER ANGLE AND TILTDOZER (D31E-18, D31P-18A, D37E, P-2)….1022
STRAIGHT TILTDOZER (D31P, PL, PLL-18)….1024
BUCKET AND LINK (D31S, Q-18)….1026
73 DISASSEMBLY AND ASSEMBLY….1028
WORK EQUIPMENT….1029
REMOVAL AND INSTALLATION….1029
BLADE….1031
REMOVAL AND INSTALLATION….1031
WORK EQUIPMENT….1033
REMOVAL AND INSTALLATION….1033
BUCKET….1033
REMOVAL AND INSTALLATION….1033
74 MAINTENANCE STANDARD….1035
POWER ANGLE AND TILTDOZER (D31E-18, D31P-18A, D37E, P-2)….1036
STRAIGHT TILTDOZER (D31P, PL, PLL-18)….1038
BUCKET LINK (D31S, Q-18)….1040
80 ELECTRICAL SYSTEM….1042
81 STRUCTURE AND FUNCTION….1042
WIRING DIAGRAM….1043
SEBM0114B01 – Bulldozer D31A-16, D31P-16 Shop Manual (SN25001&up)….1044
SEBM0114C04 – Bulldozer D31A,E,P,PL,PLL-17, D31P-17A,B Shop Manual (SN32001&up)….1596
SRBM001007K – Бульдозер D31E,P,PL,PLL,S,Q-20 & D31P-20A & D37E-5 & D37P-5A Заводская инструкция….2000
Komatsu Bulldozers D31A, D31E, D31P, D31PL, D31PLL, D31S, D31Q, D37E, D37P Repair Service Manuals