Komatsu D150A-1 D155A-1 Bulldozer Shop Manual SEBM0170A07 PDF

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Komatsu D150A-1 D155A-1 Bulldozer Shop Manual SEBM0170A07 – PDF DOWNLOAD

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Komatsu D150A-1 D155A-1 Bulldozer Shop Manual SEBM0170A07 – PDF DOWNLOAD 

Language : English
Pages : 993
Downloadable : Yes
File Type : PDF

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TABLE OF CONTENTS:

Komatsu D150A-1 D155A-1 Bulldozer Shop Manual SEBM0170A07 – PDF DOWNLOAD 

MACHINE MODEL        SERIAL No.
D150A-1                          8408 and up
D155A-1                          15001 and up

COVER 1
CONTENTS 2
GENERAL 18
GENERAL 19
GENERAL VIEWS 20
SPECIFICATIONS 27
GENERAL ASSEMBLY DRAWING 29
ENGINE ASSEMBLY DRAWING 41
ENGINE SPECIFICATIONS 42
WEIGHT TABLE 45
POSITIONS OF SERIAL NUMBERS 51
TABLE OF OIL AND COOLANT QUANTITIES 53
OIL AND WATER FILLING AND DRAIN POINTS 55
ENGINE 58
11 STRUCTURE AND FUNCTION 58
STRUCTURE AND FUNCTION 59
RADIATOR, FAN 60
OIL COOLER 65
P T O (POWER TAKE-OFF) 66
ENGINE CONTROL 67
FUEL PIPING 68
12 TESTING AND ADJUSTING 69
TESTING AND ADJUSTING 70
TESTING AND ADJUSTING TOOL LIST 71
TESTING AND ADJUSTING, TROUBLE SHOOTING CRITERIA 72
GENERAL INSTRUCTIONS 76
MEASURING ENGINE SPEED 76
CRANKING METHOD 77
INTAKE AND EXHAUST SYSTEM 78
CHECKING AIR CLEANER ELEMENT FOR CLOGGING 78
INSPECTION OF TURBOCHARGER 79
ADJUSTMENT OF VALVE CLEARANCE 80
CHECKING EXHAUST COLOR 81
ENGINE BODY 82
MEASURING BLOW-BY 82
MEASURING COMPRESSION PRESSURE 83
LUBRICATION SYSTEM 84
CHECKING OIL 84
MEASURING OIL PRESSURE AND TEMPERATURE 85
FUEL SYSTEM 86
CHECKING FUEL 86
CHECKING FUEL CONTROL LEVER POSITION 86
AIR-BLEEDING OF FUEL CIRCUIT 87
CHECKING FUEL DELIVERY TIMING 87
13 DISASSEMBLY AND ASSEMBLY 89
DISASSEMBLY AND ASSEMBLY 90
DISMOUNTING TURBOCHARGER 91
MOUNTING TURBOCHARGER 93
DISMOUNTING ENGINE OIL COOLER 95
MOUNTING ENGINE OIL COOLER 98
DISMOUNTING TORQUE CONVERTER OIL COOLER 101
MOUNTING TORQUE CONVERTER OIL COOLER 104
DISMOUNTING NOZZLE HOLDER 107
MOUNTING NOZZLE HOLDER 108
DISMOUNTING FUEL INJECTION PUMP 109
MOUNTING FUEL INJECTION PUMP 111
DISMOUNTING AND MOUNTING FAN BELT 114
DISMOUNTING WATER PUMP 115
MOUNTING WATER PUMP 117
DISMOUNTING STARTING MOTOR 119
MOUNTING STARTING MOTOR 120
DISMOUNTING ALTERNATOR 121
MOUNTING ALTERNATOR 122
DISMOUNTING CYLINDER HEAD 123
MOUNTING CYLINDER HEAD 130
DISMOUNTING FUEL TANK 138
MOUNTING FUEL TANK 140
DISMOUNTING RADIATOR GUARD 148
MOUNTING RADIATOR GUARD 152
DISMOUNTING RADIATOR 156
MOUNTING RADIATOR 160
DISMOUNTING ENGINE 170
MOUNTING ENGINE 178
DISMOUNTING CHASSIS RELATED PARTS FROM ENGINE 209
MOUNTING CHASSIS RELATED PARTS ON ENGINE 211
POWER TRAIN 213
21 STRUCTURE AND FUNCTION 213
STRUCTURE AND FUNCTION 214
GENERAL 215
MAIN CLUTCH (D150A) 219
INERTIA BRAKE 223
MAIN CLUTCH HYDRAULIC 224
MAIN CLUTCH HYDRAULIC BOOSTER 225
HYDRAULIC SYSTEM 227
HYDRAULIC CIRCUIT 227
MAIN CLUTCH PUMP 228
TRANSMISSION (D150A) 229
INTERLOCK 234
DOUBLE MESH PREVENTIVE DEVICE 236
TRANSMISSION LUBRICATION VALVE 237
TORQUE CONVERTER (D155A) 238
TRANSMISSION (D155A) 243
POWER TRANSMITTING LINE 249
TORQFLOW HYDRAULIC PIPING 253
TORQFLOW HYDRAULIC SYSTEM 256
TORQFLOW HYDRAULIC CIRCUIT 257
TRANSMISSION LUBRICATION RELIEF VALVE 262
TRANSMISSION CONTROL VALVE 263
TRANSMISSION PUMP 270
TRANSMISSION, STEERING OIL STRAINER 271
TRANSMISSION OIL FILTER 272
BEVEL GEAR SHAFT AND STEERING CLUTCH 273
STEERING AND BRAKE PIPING 276
STEERING HYDRAULIC SYSTEM 280
STEERING HYDRAULIC CIRCUIT 281
BRAKE HYDRAULIC SYSTEM 284
BRAKE HYDRAULIC CIRCUIT 285
STEERING BRAKE AND BOOSTER 288
STEERING CONTROL VALVE 291
STEERING AND BRAKE PIPING 296
STEERING AND BRAKE HYDRAULIC SYSTEM 298
STEERING AND BRAKE HYDRAULIC CIRCUIT 299
STEERING BRAKE AND BOOSTER 300
STEERING CONTROL VALVE 306
STEERING PUMP 311
STEERING OIL FILTER 312
FINAL DRIVE 313
22 TESTING AND ADJUSTING 316
TESTING AND ADJUSTING 317
GENERAL 318
MAIN CLUTCH HYDRAULIC CONTROL 320
TORQFLOW HYDRAULIC CONTROL 322
STEERING HYDRAULIC CONTROL 328
BRAKE HYDRAULIC CONTROL 334
TABLE OF OIL PRESSURE MEASURING POINTS 338
MEASUREMENT OF OIL PRESSURE AND TEMPERATURE 339
PROCEDURE FOR MEASURING OIL PRESSURE AND TEMPERATURE 345
PROCEDURE FOR MEASUREMENT OF LEVER AND PEDAL TRAVEL 351
MEASUREMENT OF OPERATING FORCE 352
ADJUSTMENT PROCEDURE FOR STROKES 355
TABLE OF MAINTENANCE STANDARDS 358
23 DISASSEMBLY AND ASSEMBLY 361
DISASSEMBLY AND ASSEMBLY 362
DISASSEMBLY OF PTO AND FLYWHEEL HOUSING 365
ASSEMBLY OF PTO AND FLYWHEEL HOUSING 369
DISASSEMBLY OF MAIN CLUTCH ASSEMBLY 373
ASSEMBLY OF MAIN CLUTCH ASSEMBLY 376
DISASSEMBLY OF TRANSMISSION ASSEMBLY 381
ASSEMBLY OF TRANSMISSION ASSEMBLY 388
DISMOUNTING TORQUE CONVERTER 398
MOUNTING TORQUE CONVERTER 402
DISASSEMBLY OF TORQUE CONVERTER (1/2),(2/2) 406
ASSEMBLY OF TORQUE CONVERTER (1/2),(2/2) 414
DISMOUNTING TORQUE CONVERTER RELIEF VALVE 430
MOUNTING TORQUE CONVERTER RELIEF VALVE 431
DISMOUNTING TORQUE CONVERTER REGULATOR VALVE 432
MOUNTING TORQUE CONVERTER REGULATOR VALVE 433
DISMOUNTING TORQFLOW TRANSMISSION 434
MOUNTING TORQFLOW TRANSMISSION 442
DISASSEMBLY OF TORQFLOW TRANSMISSION (1/2),(2/2) 450
ASSEMBLY OF TORQFLOW TRANSMISSION (1/2),(2/2) 462
DISMOUNTING TRANSMISSION CONTROL VALVE 484
MOUNTING TRANSMISSION CONTROL VALVE 486
DISASSEMBLY OF TRANSMISSION CONTROL VALVE 488
ASSEMBLY OF TRANSMISSION CONTROL VALVE 490
DISMOUNTING TRANSMISSION LUBRICATION VALVE 493
MOUNTING TRANSMISSION LUBRICATION VALVE 494
DISMOUNTING STEERING CLUTCH 495
MOUNTING STEERING CLUTCH 499
DISASSEMBLY OF STEERING CLUTCH 511
ASSEMBLY OF STEERING CLUTCH 513
DISMOUNTING BEVEL GEAR AND BEVEL GEAR SHAFT 515
MOUNTING BEVEL GEAR AND BEVEL GEAR SHAFT 518
DISMOUNTING FINAL DRIVE 1ST PINION 524
MOUNTING FINAL DRIVE 1ST PINION 526
DISMOUNTING STEERING CONTROL VALVE 529
MOUNTING STEERING CONTROL VALVE 530
DISMOUNTING STEERING BRAKE INTERLOCKING VALVE 531
MOUNTING STEERING BRAKE INTERLOCKING VALVE 532
DISASSEMBLY OF STEERING CONTROL VALVE 533
ASSEMBLY OF STEERING CONTROL VALVE 535
DISASSEMBLY OF STEERING BRAKE INTERLOCKING VALVE 537
ASSEMBLY OF STEERING BRAKE INTERLOCKING VALVE 537
DISMOUNTING BRAKE SAFETY VALVE 539
MOUNTING BRAKE SAFETY VALVE 540
DISASSEMBLY OF BRAKE SAFETY VALVE 541
ASSEMBLY OF BRAKE SAFETY VALVE 541
ADJUSTING MAIN CLUTCH 543
DISMOUNTING STEERING MAIN RELIEF VALVE 544
MOUNTING STEERING MAIN RELIEF VALVE 544
DISASSEMBLY OF STEERING MAIN RELIEF VALVE 545
ASSEMBLY OF STEERING MAIN RELIEF VALVE 545
DISMOUNTING BRAKE BOOSTER 546
MOUNTING BRAKE BOOSTER 547
DISASSEMBLY OF BRAKE BOOSTER 548
ASSEMBLY OF BRAKE BOOSTER 549
DISASSEMBLY OF FINAL DRIVE 550
ASSEMBLY OF FINAL DRIVE 556
DISMOUNTING TORQFLOW PUMP 563
MOUNTING TORQFLOW PUMP 565
DISMOUNTING STEERING PUMP 567
MOUNTING STEERING PUMP 568
DISMOUNTING TORQUE CONVERTER OIL COOLER 569
MOUNTING TORQUE CONVERTER OIL COOLER 572
DISMOUNTING FLOOR FRAME 575
MOUNTING FLOOR FRAME 579
DISMOUNTING FLOOR FRAME 583
MOUNTING FLOOR FRAME 585
DISMOUNTING ROPS CAB 587
MOUNTING ROPS CAB 590
TILTING ROPS CAB 593
RETURNING ROPS CAB ASSEMBLY TO ITS ORIGINAL POSITION 597
DISMOUNTING FUEL TANK 601
MOUNTING FUEL TANK 603
DISMOUNTING RADIATOR 605
MOUNTING RADIATOR 609
DISMOUNTING RADIATOR GUARD 613
MOUNTING RADIATOR GUARD 617
24 MAINTENANCE STANDARD 621
MAINTENANCE STANDARD 623
MAIN CLUTCH 624
(1) PLATE, GEAR, SHAFT 624
(2) MAIN CLUTCH BOOSTER 626
(3) INERTIA BRAKE 627
TORQUE CONVERTER (K1015~3724) 628
(1) TORQUE CONVERTER 628
(2) RELIEF VALVE, REGULATOR VALVE 630
TORQUE CONVERTER (K3725～, K1001～) 631
(1) TORQUE CONVERTER 631
(2) RELIEF VALVE, REGULATOR VALVE 634
TRANSMISSION 635
(1) TRANSMISSION CASE, GEAR 635
(2) GEAR SHIFT LEVER 637
TRANSMISSION 639
(1) TRANSMISSION 639
(2) TRANSMISSION CONTROL VALVE 641
(3) TRANSMISSION CONTROL VALVE SPRING 645
BEVEL GEAR SHAFT AND STEERING SYSTEM 649
(1) BEVEL GEAR SHAFT AND BEVEL GEAR 649
(2) STEERING CLUTCH 651
(3) STEERING BRAKE 653
(4) STEERING CONTROL VALVE 654
(5) BRAKE VALVE AND BRAKE BOOSTER 658
FINAL DRIVE 659
UNDERCARRIAGE 662
31 STRUCTURE AND FUNCTION 662
STRUCTURE AND FUNCTION 663
TRACK (MASTER PIN TYPE) 664
TRACK (MASTER LINK TYPE) 665
TRACK GROUP 668
RECOIL SPRING 669
IDLER 670
TRACK ROLLER, CARRIER ROLLER 671
SUSPENSION 672
33 DISASSEMBLY AND ASSEMBLY 674
DISASSEMBLY AND ASSEMBLY 675
SEPARATION OF TRACK 676
CONNECTION OF TRACK 678
DISMOUNTING CARRIER ROLLER 684
MOUNTING CARRIER ROLLER 685
DISMOUNTING TRACK ROLLER 686
MOUNTING TRACK ROLLER 688
DISMOUNTING IDLER 690
MOUNTING IDLER 692
DISMOUNTING RECOIL SPRING 694
MOUNTING RECOIL SPRING 697
DISASSEMBLY OF RECOIL SPRING 700
ASSEMBLY OF RECOIL SPRING 702
DISMOUNTING TRACK FRAME 704
MOUNTING TRACK FRAME 706
34 MAINTENANCE STANDARD 708
MAINTENANCE STANDARD 710
UNDERCARRIAGE 711
(1) TRACK (MASTER PIN TYPE) 711
(2) TRACK (MASTER LINK TYPE) 713
(2) LDLER 719
(3) TRACK ROLLER 721
(4) CARRIER ROLLER 723
(5) TRACK FRAME 724
(6) RECOIL SPRING 725
HYDRAULIC SYSTEM 726
61 STRUCTURE AND FUNCTION 726
STRUCTURE AND FUNCTION 727
HYDRAULIC CONTROL 728
HYDRAULIC TANK 737
HYDRAULIC CONTROL VALVE 739
RIPPER SELECTOR VALVE AND PILOT CHECK VALVE 742
PIN PULLER VALVE 746
PILOT VALVE 750
ROTARY SERVO VALVE 752
SERVO VALVE HYDRAULIC CONTROL (D150A) 755
SERVO VALVE HYDRAULIC CIRCUIT (D150A) 755
SERVO VALVE HYDRAULIC CONTROL (D155A) 756
SERVO VALVE HYDRAULIC CIRCUIT (D155A) 756
SAFETY VALVE 758
CYLINDER 759
PISTON VALVE 761
QUICK DROP VALVE 762
HYDRAULIC CONTROL 763
PIN PULLER 785
62 TESTING AND ADJUSTING 788
TESTING AND ADJUSTING 789
GENERAL DESCRIPTION 790
HYDRAULIC CONTROL 791
PIN PULLER CONTROL 793
TABLE OF OIL PRESSURE MEASURING POINTS 794
MEASUREMENT OF OIL PRESSURE AND TEMPERATURE 795
MEASUREMENT PROCEDURE OF OIL PRESSURE AND TEMPERATURE 796
MEASURING THE HYDRAULIC PUMP DELIVERY 797
MEASUREMENT OF OPERATING FORCE 799
MEASUREMENT OF HYDRAULIC DRIFT RATE OF WORK EQUIPMENT 800
TABLE OF MAINTENANCE STANDARD 801
63 DISASSEMBLY AND ASSEMBLY 803
DISASSEMBLY AND ASSEMBLY 804
DISMOUNTING HYDRAULIC PUMP 807
MOUNTING HYDRAULIC PUMP 809
DISMOUNTING HYDRAULIC TANK 811
MOUNTING HYDRAULIC TANK 815
DISMOUNTING RIPPER AND BLADE CONTROL VALVE 819
MOUNTING RIPPER AND BLADE CONTROL VALVE 821
DISASSEMBLY OF RIPPER AND BLADE CONTROL VALVE 823
ASSEMBLY OF RIPPER AND BLADE CONTROL VALVE 826
DISASSEMBLY OF BLADE TILT CONTROL VALVE 829
ASSEMBLY OF BLADE TILT CONTROL VALVE 830
DISMOUNTING BLADE LIFT SERVO VALVE 831
MOUNTING BLADE LIFT SERVO VALVE 833
DISMOUNTING BLADE TILT SERVO VALVE 835
MOUNTING BLADE TILT SERVO VALVE 836
DISMOUNTING RIPPER SERVO VALVE 837
MOUNTING RIPPER SERVO VALVE 839
DISMOUNTING RIPPER PIN PULLER VALVE 841
MOUNTING RIPPER PIN PULLER VALVE 843
DISASSEMBLY OF PIN PULLER VALVE 845
ASSEMBLY OF PIN PULLER VALVE 846
DISMOUNTING RIPPER SELECTOR VALVE 847
MOUNTING RIPPER SELECTOR VALVE 850
DISASSEMBLY OF RIPPER SELECTOR VALVE 853
ASSEMBLY OF RIPPER SELECTOR VALVE 858
DISMOUNTING BLADE LIFT CYLINDER 863
MOUNTING BLADE LIFT CYLINDER 864
DISASSEMBLY OF BLADE LIFT CYLINDER 865
ASSEMBLY OF BLADE LIFT CYLINDER 871
DISMOUNTING BLADE TILT CYLINDER 877
MOUNTING BLADE TILT CYLINDER 878
DISASSEMBLY OF BLADE TILT CYLINDER 879
ASSEMBLY OF BLADE TILT CYLINDER 885
DISMOUNTING RIPPER LIFT CYLINDER 891
MOUNTING RIPPER LIFT CYLINDER 892
DISMOUNTING RIPPER TILT CYLINDER 893
MOUNTING RIPPER TILT CYLINDER 894
DISASSEMBLY OF RIPPER CYLINDER 895
ASSEMBLY OF RIPPER CYLINDER 901
DISMOUNTING RIPPER PIN PULLER CYLINDER 907
MOUNTING RIPPER PIN PULLER CYLINDER 908
64 MAINTENANCE STANDARD 909
MAINTENANCE STANDARD 911
HYDRAULIC CONTROL VALVE 912
(1) BLADE LIFT AND RIPPER CONTROL VALVE 912
(2) BLADE LIFT CONTROL VALVE 913
(3) MAIN RELIEF VALVE 914
(4) SUCTION VALVE, SAFETY VALVE 915
(5) RIPPER SELECTOR VALVE 916
(6) RIPPER PIN PULLER VALVE 917
(7) PILOT VALVE 918
CYLINDER 919
(1) BLADE LIFT CYLINDER 919
(2) BLADE TILT CYLINDER 920
(3) RIPPER LIFT CYLINDER AND RIPPER TILT CYLINDER 921
WORK EQUIPMENT 922
71 STRUCTURE AND FUNCTION 922
STRAIGHT TILT DOZER 924
MULTI RIPPER 926
GIANT RIPPER 930
72 TESTING AND ADJUSTING 936
TESTING AND ADJUSTING 937
73 DISASSEMBLY AND ASSEMBLY 940
DISASSEMBLY AND ASSEMBLY 941
DISMOUNTING BLADE 942
MOUNTING BLADE 944
DISASSEMBLY TO BLADE 946
ASSEMBLY OF BLADE 949
DISASSEMBLY OF RIPPER 952
ASSEMBLY OF RIPPER 957
74 MAINTENANCE STANDARD 962
MAINTENANCE STANDARD 964
STRAIGHT TILT DOZER 965
(1) BLADE, FRAME, ARM AND CYLINDER YOKE 965
(2) CUTTING EDGE AND END BIT 967
MULTI RIPPER 968
GIANT RIPPER 970
OTHERS 972
90 ELECTRICAL SYSTEM 972
ELECTRICAL SYSTEM 973
ELECTRICAL CIRCUIT DIAGRAM 974
ELECTRICAL WIRING DIAGRAM 982
WARNING MODULE 985
CORRECTIVE ACTION TO BE TAKEN WHEN WARNING MODULE IS ACTIVATED 986
A P S (AUTOMATIC PRIMING SYSTEM) 988

DESCRIPTION:

Komatsu D150A-1 D155A-1 Bulldozer Shop Manual SEBM0170A07 – PDF DOWNLOAD 

MACHINE MODEL        SERIAL No.
D150A-1                          8408 and up
D155A-1                          15001 and up

GENERAL PRECAUTIONS :

Mistakes in operation are extremely dangerous. Read the OPERATION & MAINTENANCE MANUAL carefully BEFORE operating the machine.

PREPARATIONS FOR WORK:

PRECAUTIONS DURING WORK :

S.V 28/12/24