Komatsu WA400-5H Wheel Loader Shop Manual VEBM210100 PDF  

Description

Komatsu WA400-5H Wheel Loader Shop Manual VEBM210100 – PDF DOWNLOAD

FILE DETAILS:

Komatsu WA400-5H Wheel Loader Shop Manual VEBM210100 – PDF DOWNLOAD 

Language : English
Pages : 1182
Downloadable : Yes
File Type : PDF

TABLE OF CONTENTS:

Komatsu WA400-5H Wheel Loader Shop Manual VEBM210100 – PDF DOWNLOAD 

MODEL               SERIAL NUMBER
WA400-5H          WA400H50051 AND UP

WA400-5H PART I 1
CONTENTS 2
00 SAFETY / FOREWORD 3
SAFETY NOTICE 3
FOREWORD 5
HOW TO READ THE SHOP MANUAL 6
HOISTING INSTRUCTIONS 7
METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER 8
COATING MATERIALS 10
STANDARD TIGHTENING TORQUE 12
ELECTRIC WIRE CODE 15
CONVERSION TABLE 16
UNITS 22
01 GENERAL 23
GENERAL ASSEMBLY DRAWING 24
SPECIFICATIONS 25
WEIGHT TABLE 29
LIST OF LUBRICANT AND COOLANT 31
10 STRUCTURE AND FUNCTION, MAINTENANCE STANDARD 33
COOLING SYSTEM 34
ENGINE MOUNT, TRANSMISSION MOUNT 35
POWER TRAIN 36
POWER TRAIN SYSTEM DIAGRAM 37
DRIVE SHAFT (PROPELLER SHAFT) 40
TORQUE CONVERTER, TRANSMISSION PIPING 41
TORQUE CONVERTER 42
TRANSMISSION 50
TRANSMISSION CONTROL VALVE 66
AXLE 80
DIFFERENTIAL 82
FINAL DRIVE 93
AXLE MOUNTING, CENTER HINGE PIN 96
STEERING PIPING 100
STEERING COLUMN, ORBIT-ROLL 101
STEERING VALVE 102
ORBIT-ROLL VALVE 117
STOP VALVE 121
STEERING PUMP, SWITCH PUMP 122
EMERGENCY STEERING PUMP (OP) 124
EMERGENCY STEERING MOTOR (OP) 125
STEERING CYLINDER 126
JOYSTICK STEERING LEVER (OP) 128
STEERING LEVER (OP) (FOR JOYSTICK STEERING LEVER) 129
STEERING SWITCH VALVE (OP) (FOR JOYSTICK STEERING LEVER) 131
BRAKE PIPING 132
BRAKE VALVE 134
CHARGE VALVE 141
ACCUMULATOR (FOR BRAKE) 145
BRAKE 147
PARKING BRAKE CONTROL 152
PARKING BRAKE 153
PARKING BRAKE SOLENOID VALVE 155
PARKING BRAKE EMERGENCY RELEASE VALVE 157
HYDRAULIC PIPING 158
WORK EQUIPMENT CONTROL LEVER 161
HYDRAULIC TANK 163
TORQUE CONVERTER CHARGING, WORK EQUIPMENT, AND PILOT CONTROL PUMPS 165
PPC RELIEF VALVE 167
TRAVEL DAMPER VALVE (OP) 169
WORK EQUIPMENT CONTROL VALVE 171
WORK EQUIPMENT PPC VALVE 188
EPC SOLENOID VALVE (OP) 194
SHUT OFF VALVE (OP) 197
ATTACHMENT PPC VALVE (OP) 198
COOLING FAN MOTOR 202
COOLING FAN MOTOR DRIVE PUMP 207
WORK EQUIPMENT LINKAGE 215
BUCKET 217
BUCKET POSITIONER, LIFT ARM KICK-OUT 218
WORK EQUIPMENT CYLINDER 224
CAB 225
AIR CONDITIONER (OP) 226
MACHINE MONITORING SYSTEM 227
MACHINE MONITOR 234
SPEED METER SPECIFICATIONS 234
LOAD METER SPECIFICATION (OPTION) 235
TRANSMISSION CONTROL SYSTEM 294
TRANSMISSION CONTROLLER 318
WORK EQUIPMENT CONTROL SYSTEM (OP) 320
WORK EQUIPMENT CONTROLLER 336
ELECTRIC TRANSMISSION CONTROL 338
KICK DOWN, HOLD SWITCH 342
ENGINE STARTING CIRCUIT 343
ENGINE STOP CIRCUIT 345
PREHEATING CIRCUIT 346
ENGINE POWER MODE SELECTOR CIRCUIT 347
PARKING BRAKE CIRCUIT 348
SENSORS 352
20 TESTING AND ADJUSTING 363
STANDARD VALUE TABLE FOR ENGINE 364
STANDARD VALUE TABLE FOR CHASSIS 365
MEASURING ENGINE SPEED 374
MEASURING EXHAUST COLOR 376
MEASURING EXHAUST TEMPERATURE 377
ADJUSTING VALVE CLEARANCE 378
MEASURING COMPRESSION PRESSURE 380
MEASURING BLOW-BY PRESSURE 381
MEASURING ENGINE OIL PRESSURE 382
MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE) 383
TESTING AND ADJUSTING FUEL INJECTION TIMING 384
ADJUSTING ENGINE SPEED SENSOR 385
BLEEDING AIR FROM FUEL CIRCUIT 386
ADJUSTING ENGINE STOP SOLENOID 387
ADJUSTING ACCELERATOR PEDAL 389
ADJUSTING TRANSMISSION SPEED SENSOR 391
TESTING AND ADJUSTING POWER TRAIN OIL PRESSURE 392
DRAWING OF SPECIAL TOOL 396
PROCEDURE FOR FLUSHING TORQUE CONVERTER, TRANSMISSION HYDRAULIC CIRCUIT 397
PROCEDURE FOR MOVING MACHINE WHEN TRANSMISSION VALVE FAILS 398
TESTING AND ADJUSTING STEERING CONTROL 400
TESTING AND ADJUSTING STEERING OIL PRESSURE 401
TESTING HYDRAULIC FAN 403
MEASURING BRAKE OIL PRESSURE 404
TESTING WEAR OF WHEEL BRAKE DISC 406
BLEEDING AIR FROM BRAKE CIRCUIT 407
TESTING WEAR OF PARKING BRAKE DISC 408
MANUAL RELEASE METHOD FOR PARKING BRAKE 409
TESTING AND ADJUSTING ACCUMULATOR CHARGE PRESSURE 410
TESTING AND ADJUSTING WORKING EQUIPMENT PPC OIL PRESSURE 412
TESTING AND ADJUSTING WORK EQUIPMENT HYDRAULIC PRESSURE 414
TESTING AND ADJUSTING BUCKET POSITIONER 416
TESTING AND ADJUSTING LIFT ARM KICK-OUT 417
CHECKING PROXIMITY SWITCH ACTUATION PILOT LAMP 418
ADJUSTING MACHINE MONITOR 419
TESTING AND ADJUSTING LOAD METER 422
BLEEDING AIR 423
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT 424
RELEASING REMAINING PRESSURE IN TRAVEL DAMPER CIRCUIT 424
20 TROUBLESHOOTING 425
POINTS TO REMEMBER WHEN TROUBLESHOOTING 426
SEQUENCE OF EVENTS IN TROUBLESHOOTING 427
PRECAUTIONS WHEN CARRYING OUT MAINTENANCE 428
CHECKS BEFORE TROUBLESHOOTING 436
EQUIPMENT FOR TROUBLESHOOTING ELECTRICAL SYSTEM 437
SPECIAL FUNCTIONS OF MACHINE MONITOR 438
CATEGORIES, PROCEDURE, AND METHOD OF USING TROUBLESHOOTING CHARTS 473
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS 478
20 TROUBLESHOOTING OF TRANSMISSION CONTROL SYSTEM (TM MODE) 491
CONNECTOR TYPES AND MOUNTING LOCATIONS 493
CONNECTOR LAYOUT DRAWING 502
TRANSMISSION CONTROL SYSTEM DIAGRAM 508
ERROR CODE [1500L1] 511
ERROR CODE [15SAL1] 512
ERROR CODE [15SALH] 513
ERROR CODE [15SBL1] 514
ERROR CODE [15SBLH] 515
ERROR CODE [15SEL1] 516
ERROR CODE [15SELH] 517
ERROR CODE [15SFL1] 518
ERROR CODE [15SFLH] 519
ERROR CODE [15SGL1] 520
ERROR CODE [15SGLH] 521
ERROR CODE [15SHL1] 522
ERROR CODE [15SHLH] 523
ERROR CODE [15SJL1] 524
ERROR CODE [15SJLH] 525
ERROR CODE [989F00] 526
ERROR CODE [989G00] 527
ERROR CODE [B@C7NS] 528
ERROR CODE [D150KA] 529
ERROR CODE [D150KB] 530
ERROR CODE [D160KA] 531
ERROR CODE [D160KB] 532
ERROR CODE [D191KA] 534
ERROR CODE [D191KB] 536
ERROR CODE [D192KA] 538
ERROR CODE [D192KB] 539
ERROR CODE [DAQ0KK] 540
ERROR CODE [DAQ2KK] 541
ERROR CODE [DAQ9KQ] 542
ERROR CODE [DDK3KA] 544
ERROR CODE [DDK3KB] 546
ERROR CODE [DDK4KA] 547
ERROR CODE [DDK4KB] 549
ERROR CODE [DDK5LD] 551
ERROR CODE [DDK6KA] 552
ERROR CODE [DDK6KB] 554
ERROR CODE [DDS5KA] 556
ERROR CODE [DDS5KB] 557
ERROR CODE [DDT0L4] 558
ERROR CODE [DDT4LD] 560
ERROR CODE [DDW9LD] 561
ERROR CODE [DDWLLD] 562
ERROR CODE [DF10KA] 564
ERROR CODE [DF10KB] 566
ERROR CODE [DGF1KX] 568
ERROR CODE [DGR2KA] 569
ERROR CODE [DGR2KB] 570
ERROR CODE [DHT1KX] 571
ERROR CODE [DLE2KA] 572
ERROR CODE [DLE2LC] 573
ERROR CODE [DLT3KA] 574
ERROR CODE [DT20KB] 575
ERROR CODE [DW7BKA] 576
ERROR CODE [DW7BKB] 577
ERROR CODE [DW7CKA] 578
ERROR CODE [DW7CKB] 579
ERROR CODE [DX16KA] 580
ERROR CODE [DX16KB] 581
ERROR CODE [DXH1KA] 582
ERROR CODE [DXH1KB] 583
ERROR CODE [DXH4KA] 584
ERROR CODE [DXH4KB] 585
ERROR CODE [DXH5KA] 586
ERROR CODE [DXH5KB] 587
ERROR CODE [DXH6KA] 588
ERROR CODE [DXH6KB] 589
ERROR CODE [DXH7KA] 590
ERROR CODE [DXH7KB] 591
ERROR CODE [DXH8KA] 592
ERROR CODE [DXH8KB] 593
ERROR CODE [DXHHKA] 594
ERROR CODE [DXHHKB] 595
ERROR CODE [DY30MA] 596
ERROR CODE [DY30MC] 598
ACTION CODE [TM-1] 600
ACTION CODE [TM-2] 601
ACTION CODE [TM-3] 602
ACTION CODE [TM-4] 604
ACTION CODE [TM-5] 606
ACTION CODE [TM-6] 608
ACTION CODE [TM-7] 609
ACTION CODE [TM-8] 610
ACTION CODE [TM-9] 611
ACTION CODE [TM-10-a] 612
ACTION CODE [TM-10-b] 614
ACTION CODE [TM-11] 616
ACTION CODE [TM-12] 618
ACTION CODE [TM-13] 619
ACTION CODE [TM-14] 620
ACTION CODE [TM-15] 621
ACTION CODE [TM-16] 622
ACTION CODE [TM-17] 623
ACTION CODE [TM-18] 624
ACTION CODE [TM-19] 625
ACTION CODE [TM-20] 626
ACTION CODE [TM-21] 627
ACTION CODE [TM-22] 628
ACTION CODE [TM-23] 629
ACTION CODE [TM-24] 630
ACTION CODE [TM-25] 631
ACTION CODE [TM-26] 632
ACTION CODE [TM-27] 633
ACTION CODE [TM-28] 634
ACTION CODE [TM-29] 635
20 TROUBLESHOOTING OF WORK EQUIPMENT CONTROL SYSTEM (WRK MODE) 637
CONNECTOR TYPES AND MOUNTING LOCATIONS 639
CONNECTOR LAYOUT DRAWING 648
WORK EQUIPMENT CONTROL SYSTEM DIAGRAM 654
ERROR CODE [D193KA] 657
ERROR CODE [D193KB] 658
ERROR CODE [DB90KK] 659
ERROR CODE [DB92KK] 660
ERROR CODE [DB95KX] 662
ERROR CODE [DD1ALD] 664
ERROR CODE [DD1BLD] 665
ERROR CODE [DFAOKM] 666
ERROR CODE [DK59KA] 667
ERROR CODE [DK59KY] 668
ERROR CODE [DK59L8] 669
ERROR CODE [DK5AKA] 670
ERROR CODE [DK5AKY] 671
ERROR CODE [DK5BKA] 672
ERROR CODE [DK5BKY] 673
ERROR CODE [DK5BL8] 674
ERROR CODE [DK5CKA] 675
ERROR CODE [DK5CKY] 676
ERROR CODE [DK5DKA] 677
ERROR CODE [DK5DKY] 678
ERROR CODE [DK5DL8] 679
ERROR CODE [DK5EKA] 680
ERROR CODE [DK5EKY] 681
ERROR CODE [DK5FKA] 682
ERROR CODE [DK5FKY] 683
ERROR CODE [DK5FKM] 684
ERROR CODE [DK5FL8] 685
ERROR CODE [DK5GKA] 686
ERROR CODE [DK5GKY] 687
ERROR CODE [DKAOKA] 688
ERROR CODE [DKAOKY] 689
ERROR CODE [DLE2LC] 690
ERROR CODE [DLT3LC] 691
ERROR CODE [DUM1KB] 692
ERROR CODE [DUM2KB] 693
ERROR CODE [DW4PKA] 694
ERROR CODE [DW4PKB] 695
ERROR CODE [DW4QKA] 696
ERROR CODE [DW4QKB] 697
ERROR CODE [DW4RKA] 698
ERROR CODE [DW4RKB] 699
ERROR CODE [DW4SKA] 700
ERROR CODE [DW4SKB] 701
ERROR CODE [DWM1KA] 702
ERROR CODE [DWM1KB] 703
ERROR CODE [DWN6KA] 704
ERROR CODE [DWN6KB] 705
ERROR CODE [DWN7KA] 706
ERROR CODE [DWN7KB] 707
ERROR CODE [DWN8KA] 708
ERROR CODE [DWN8KB] 709
ERROR CODE [DXHJKA] 710
ERROR CODE [DXHJKB] 711
ERROR CODE [DXHKKA] 712
ERROR CODE [DXHKKB] 713
ERROR CODE: [DXHLKA] 714
ERROR CODE: [DXHLKB] 715
ERROR CODE: [DXHMKA] 716
ERROR CODE: [DXHMKB] 717
ACTION CODE: [WRK-1] 718
ACTION CODE: [WRK-2] 719
ACTION CODE: [WRK-3] 720
ACTION CODE: [WRK-4] 722
ACTION CODE: [WRK-5] 724
ACTION CODE: [WRK-6] 726
ACTION CODE: [WRK-7] 728
ACTION CODE: [WRK-8] 729
ACTION CODE: [WRK-9] 730
ACTION CODE: [WRK-10] 732
ACTION CODE: [WRK-11] 734
ACTION CODE: [WRK-12] 735
ACTION CODE: [WRK-13] 736
ACTION CODE: [WRK-14] 737
ACTION CODE: [WRK-15] 738
ACTION CODE: [WRK-16] 739
ACTION CODE: [WRK-17] 740
ACTION CODE: [WRK-18] 741
ACTION CODE: [WRK-19] 742
ACTION CODE: [WRK-20] 743
ACTION CODE: [WRK-21] 744
ACTION CODE: [WRK-22] 745
ACTION CODE: [WRK-23] 746
ACTION CODE: [WRK-24] 747
ACTION CODE: [WRK-25] 748
ACTION CODE: [WRK-26] 750
ACTION CODE: [WRK-27] 752
ACTION CODE: [WRK-28] 754
20 TROUBLESHOOTING OF MONITOR SYSTEM (MON MODE) 757
CONNECTOR TYPES AND MOUNTING LOCATIONS 759
CONNECTOR LAYOUT DRAWING 768
MONITOR SYSTEM DIAGRAM 774
ERROR CODE [2F00KM] 778
ERROR CODE [2G42ZG] 780
ERROR CODE [2G43ZG] 781
ERROR CODE [AA1ANX] 782
ERROR CODE [AB00L6] 784
ERROR CODE [AB00MA] 785
ERROR CODE [B@BAZG] 786
ERROR CODE [B@BAZK] 787
ERROR CODE [B@BCNS] 788
ERROR CODE [B@BCZK] 789
ERROR CODE [B@HANS] 790
ERROR CODE [B@CENS] 791
ERROR CODE [D182KZ] 792
ERROR CODE [D5ZHL6] 794
ERROR CODE [DA80L4] 795
ERROR CODE [DAF3KK] 796
ERROR CODE [DAF5KP] 798
ERROR CODE [DAF6KP] 800
ERROR CODE [DAFBKM] 802
ERROR CODE [DAFSKQ] 803
ERROR CODE [DAQSKR] 804
ERROR CODE [DB2SKR] 805
ERROR CODE [DBQSKR] 806
ERROR CODE [DB9SKR] 807
ERROR CODE [DD15LD] 808
ERROR CODE [DD16LD] 809
ERROR CODE [DD17LD] 810
ERROR CODE [DD17LD] 811
ERROR CODE [DD1CLD] 812
ERROR CODE [DDK3KM] 813
ERROR CODE [DDK4KM] 814
ERROR CODE [DDK6KM] 815
ERROR CODE [DDS5L6] 816
ERROR CODE [DDY0LD] 817
ERROR CODE [DGE2KX] 818
ERROR CODE [DGE3L6] 819
ERROR CODE [DGH2KX] 820
ERROR CODE [DGT1KX] 821
ERROR CODE [DHE4L6] 822
ERROR CODE [DHPCKX] 824
ERROR CODE [DHPDKX] 826
ERROR CODE [DKA0KX] 828
ERROR CODE [DV00KB] 829
ERROR CODE [DY30ME] 830
ACTION CODE [MON-1] 832
ACTION CODE [MON-2] 834
ACTION CODE [MON-3] 835
ACTION CODE [MON-4] 836
ACTION CODE [MON-5] 838
ACTION CODE [MON-6] 839
ACTION CODE [MON-7] 840
ACTION CODE [MON-8] 841
ACTION CODE [MON-10] 843
ACTION CODE [MON-11] 844
ACTION CODE [MON-12] 845
ACTION CODE [MON-13] 846
ACTION CODE [MON-14] 847
ACTION CODE [MON-15] 848
ACTION CODE [MON-16] 849
ACTION CODE [MON-17] 850
ACTION CODE [MON-18] 851
ACTION CODE [MON-19] 852
ACTION CODE [MON-20] 853
20 TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM (H MODE) 855
H-1 The machine does not start 856
H-2 The lock-up clutch is not released 858
H-3 a The travel speed is slow, the thrusting force is weak, the uphill traveling power is weak, and the gear is not shifted 859
H-3 b The torque converter lock-up clutch is not let in (If the lock-up clutch is equipped) 861
H-4 Shocks are large at the times of starting and shifting gear 862
H-5 Time lag is large at the times of starting and shifting gear 864
H-6 The torque converter oil temperature is high 866
H-7 Steering wheel does not turn 866
H-8 Steering does not turn [machine with joystick] 868
H-9 Turning, response of steering is poor 869
H-10 Steering is heavy 870
H-11 Steering wheel shakes or jerks 871
H-12 The brake does not work or does not work well 872
H-13 The brake is not released or is dragged 873
H-14 The brake is not released or dragged 874
H-15 The lift arm does not rise 875
H-16 The lift arm moves slowly or the lift arm rising force is insufficient 876
H-17 When rising, the lift arm comes to move slowly at specific height 877
H-18 The lift arm cylinder cannot hold down the bucket (The bucket rises in the air) 877
H-19 Hydraulic drifts of the boom occur often 877
H-20 The lift arm wobbles during operation 877
H-21 When the control lever is switched from “HOLD” to “RAISE,” the lift arm falls temporarily 878
H-22 The bucket does not tilt back 879
H-23 The bucket moves slowly or the tilting-back force is insufficient 880
H-24 The bucket comes to operate slowly in he midst of tilting-back 881
H-25 The bucket cylinder cannot hold down the bucket 881
H-26 Hydraulic drifts of the bucket occur often 881
H-27 The bucket wobbles during travel with cargo (The work equipment valve is set to “HOLD”) 882
H-28 When the control lever is switched from “HOLD” to “TILT,” the bucket falls temporarily 882
H-29 The control levers of lift arm and bucket do not move smoothly and heavy 883
20 TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE) 885
CONNECTOR TYPES AND MOUNTING LOCATIONS 887
CONNECTOR LAYOUT DRAWING 896
ELECTRICAL SYSTEM DIAGRAM 902
ACTION CODE: [E-1-a] 904
ACTION CODE: [E-1-b] 908
ACTION CODE: [E-2] 910
ACTION CODE: [E-3] 912
ACTION CODE: [E-4] 914
ACTION CODE: [E-5] 916
ACTION CODE: [E-6] 918
ACTION CODE: [E-7] 920
ACTION CODE: [E-8] 923
ACTION CODE: [E-9] 924
ACTION CODE: [E-10] 927
ACTION CODE: [E-11] 928
ACTION CODE: [E-12] 929
ACTION CODE: [E-13] 932
ACTION CODE: [E-14] 935
ACTION CODE: [E-15] 937
ACTION CODE: [E-16] 938
ACTION CODE: [E-17] 940
ACTION CODE: [E-18] 942
WA400-5H PART II 945
DISASSEMBLY AND ASSEMBLY 949
Method of using manual 951
Precautions when carrying out operation 952
Engine assembly 956
Removal 956
Installation 960
Cylinder head assembly 961
Special tool 961
Removal 961
Installation 966
Radiator and fan motor assembly 969
Removal 969
Installation 970
Aftercooler assembly 971
Removal 971
Installation 971
Fuel injection pump 972
Special tool 972
Removal 972
Installation 974
Nozzle holder assembly 977
Removal 977
Installation 979
Fan and fan motor assembly 980
Removal 980
Installation 981
Fuel tank assembly 982
Removal 982
Installation 984
Parking brake disc plate 985
Special tool 985
Removal 985
Installation 988
Sketch of special tool 989
K1 Bracket 989
Torque converter and transmission assembly 990
Removal 990
Installation 995
Bleeding air of brake circuit 995
Transmission assembly 996
Special tool 996
Disassembly 996
Assembly 1003
Sketches of special tools 1012
F1 Lifting tool 1012
F4 Bracket 1012
Transmission clutch pack assembly 1013
Special tools 1013
Disassembly 1013
Disassembly of forward and reverse clutch packs 1013
[Forward clutch side] 1013
[Reverse clutch side] 1015
Disassembly of 1st and 4th clutch pack 1016
[1st clutch side] 1016
[4th clutch side] 1018
Disassembly of 2nd and 3rd clutch pack 1019
[3rd clutch side] 1019
[2nd clutch side] 1021
Assembly of the forward and reverse clutch packs 1022
[Reverse clutch side] 1022
[Forward clutch side] 1024
Assembly of 1st and 4th clutch pack 1026
[4th clutch side] 1026
[1st clutch side] 1028
Assembly of 2nd and 3rd clutch pack 1031
[2nd clutch side] 1031
[3rd clutch side] 1033
Parking brake assembly 1035
Special tools 1035
Disassembly 1035
Assembly 1038
Special tool simplified drawings 1044
F10 Push tool 1044
H1 Bracket 1044
H4 Spacer 1045
H3 Push tool 1045
H6 Push tool 1046
H5 Push tool 1046
H9 Spacer 1047
H8 Push tool 1047
Torque converter assembly (standard specification) 1048
Special tools 1048
Disassembly 1048
Assembly 1051
Torque converter assembly (lock-up specification) 1054
Special tools 1054
Disassembly 1054
Assembly 1058
Rear axle assembly 1062
Removal 1062
Installation 1065
Front axle assembly 1066
Removal 1066
Installation 1067
Axle housing assembly 1068
Special tools 1068
Disassembly 1068
Assembly of rear axle housing 1073
Assembly of front axle housing 1079
Special tool simplified drawings 1084
J1 Spacer (for rear axle housing) 1084
J2 Push tool (for rear axle housing) 1084
J3 Push tool (for rear axle housing) 1085
J1 Push tool (for rear axle housing) 1085
J4-1 Push tool (for front axle housing) 1086
J4-2 Spacer (for front axle housing) 1086
J6-1 Support (for front axle housing) 1087
Differential assembly 1088
Special tools 1088
Disassembly 1088
Assembly 1094
Special tool illustrations 1106
D3-2 Spacer (for rear differential) 1106
D2-1, D3-1 Push tool (for rear differential) 1106
D5-1 Push tool (for rear differential) 1107
D5-2 Push tool (for rear differential) 1107
D4 Push tool (for rear differential) 1108
D1-3 Plate (for front differential) 1108
D2-1, D3-1 Push tool (for front differential) 1109
D3-2 Spacer (for front differential) 1109
D4 Push tool (for front differential) 1110
D5-1 Push tool (for front differential) 1110
Center hinge pin 1111
Special tools 1111
Removal 1111
Installation 1117
Cab assembly 1121
Removal 1121
Installation 1123
Cab and floor frame assembly 1124
Removal 1124
Installation 1127
Transmission, work equipment, and PPC pump assembly 1128
Removal 1128
Installation 1128
Steering, switching, and fan pump assembly 1129
Removal 1129
Installation 1129
Steering demand valve assembly 1130
Removal 1130
Installation 1130
E C S S valve assembly 1131
Removal 1131
Installation 1131
Work equipment valve assembly 1132
Removal 1132
Installation 1133
Hydraulic cylinder assembly (steering, lift, and bucket cylinder assembly) 1134
Special tools 1134
Disassembly 1135
Assembly 1139
Hydraulic tank assembly 1144
Removal 1144
Attachment 1145
Work equipment assembly 1146
Removal 1146
Installation 1150
Counter weight 1152
Removal 1152
Installation 1152
Air conditioner unit assembly 1153
Removal 1153
Installation 1156
Air conditioner compressor assembly 1157
Removal 1157
Installation 1157
90 OTHERS 1159
POWER TRAIN OIL CIRCUIT DIAGRAM (WITHOUT TORQUE CONVERTER LOCKUP CLUTCH) 1161
POWER TRAIN OIL CIRCUIT DIAGRAM (WITH TORQUE CONVERTER LOCKUP CLUTCH) 1163
BRAKE OIL CIRCUIT DIAGRAM 1165
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM 1167
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM (FOR ELECTRIC WORK EQUIPMENT LEVER) 1168
ELECTRIC CIRCUIT DIAGRAM (1/8) 1169
ELECTRIC CIRCUIT DIAGRAM (1/8) 1170
ELECTRIC CIRCUIT DIAGRAM (1/8) 1171
ELECTRIC CIRCUIT DIAGRAM (1/8) 1172
ELECTRIC CIRCUIT DIAGRAM (2/8) 1173
ELECTRIC CIRCUIT DIAGRAM (2/8) 1174
ELECTRIC CIRCUIT DIAGRAM (2/8) 1175
ELECTRIC CIRCUIT DIAGRAM (2/8) 1176
ELECTRIC CIRCUIT DIAGRAM (3/8) 1177
ELECTRIC CIRCUIT DIAGRAM (4/8) 1178
ELECTRIC CIRCUIT DIAGRAM (5/8) 1179
ELECTRIC CIRCUIT DIAGRAM (6/8) 1180
ELECTRIC CIRCUIT DIAGRAM (7/8) 1181
ELECTRIC CIRCUIT DIAGRAM (8/8) 1182

DESCRIPTION:

Komatsu WA400-5H Wheel Loader Shop Manual VEBM210100 – PDF DOWNLOAD 

MODEL               SERIAL NUMBER
WA400-5H          WA400H50051 AND UP

FOREWORD:
GENERAL:
This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an
accurate understanding of the product and by showing him the correct way to perform repairs and make judgements.
Make sure you understand the contents of this manual and use it to full effect at every opportunity.
This shop manual mainly contains the necessary technical information for operations performed in a service
workshop. For ease of understanding, the manual is divided into the following chapters; these chapters are further
divided into the each main group of components.
STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an understanding
of the structure, but also serves as reference material for troubleshooting.
In addition, this section may contain hydraulic circuit diagrams, electric circuit diagrams, and maintenance
standards.
TESTING AND ADJUSTING
This section explains checks to be made before and after performing repairs, as well as adjustments to
be made at completion of the checks and repairs.
Troubleshooting charts correlating “Problems” with “Causes” are also included in this section.
DISASSEMBLY AND ASSEMBLY
This section explains the procedures for removing, installing, disassembling and assembling each component,
as well as precautions for them.
MAINTENANCE STANDARD
This section gives the judgment standards for inspection of disassembled parts.
The contents of this section may be described in STRUCTURE AND FUNCTION.
OTHERS
This section mainly gives hydraulic circuit diagrams and electric circuit diagrams.
In addition, this section may give the specifications of attachments and options together.

IMAGES PREVIEW OF THE MANUAL:

S.V 28/12/24