Komatsu ARTICULATED DUMP TRUCK HM400-3 Shop Manual SEN05632-21 PDF

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Komatsu ARTICULATED DUMP TRUCK HM400-3 Shop Manual SEN05632-21 – PDF DOWNLOAD

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Komatsu ARTICULATED DUMP TRUCK HM400-3 Shop Manual SEN05632-21 – PDF DOWNLOAD

Language : English
Pages :2556
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Komatsu ARTICULATED DUMP TRUCK HM400-3 Shop Manual SEN05632-21 – PDF DOWNLOAD

SERIAL NUMBERS 3001 and up

Foreword, safety and general information 
Important safety notice
• Appropriate servicing and repair are extremely important to ensure safe operation of the machine. The
shop manual describes the effective and safe servicing and repair methods recommended by Komatsu.
Some of these methods require the use of the special tools designed by Komatsu for the specific purpose.
• The symbol mark k is used for such matters that require special cautions during the work. The work
indicated by the caution mark should be performed according to the instructions with special attention to
the cautions. Should hazardous situation occur or be anticipated during such work, be sure to keep safe
first and take every necessary measure.

General precautions

Inappropriate handling causes an extreme danger. Read and understand what is described in the operation and maintenance manual before operating the machine. Read and understand what is described in this manual before starting the work.

• Before performing any greasing or repairs, read all the safety labels stuck to the machine. For the locations of the safety labels and detailed explanation of precautions, see the operation and maintenance manual.
• Locate a place in the repair workshop to keep the tools and removed parts. Always keep the tools and parts in their correct places. Always keep the work area clean and make sure that there is no dirt, water or oil on the floor. Smoke only in the areas provided for smoking. Never smoke while working.
• When performing any work, always wear the safety shoes and helmet. Do not wear loose work cloths, or clothes with buttons missing. 1. Always wear the protective eyeglasses when hitting parts with a hammer. 2. Always wear the protective eyeglasses when grinding parts with a grinder, etc.
• When performing any work with 2 or more workers, always agree on the working procedure before starting. While working, always keep conversations of the work between your fellow workers and your self on any step of the work. During the work, hang the warning tag of “UNDER WORKING” in the operator’s compartment.
• Only the approved personnel can do the work in a closed environment or in a prohibited area.
• Only qualified workers must perform the work and operation which require license or qualification.
• Keep the tools in good condition. And learn the correct way to use the tools, and use the proper ones among them. Before starting the work, thoroughly check the tools, lift truck, service vehicle, etc.
• If welding repairs is required, always have a trained and experienced welder with good knowledge of welding perform the work. When performing welding work, always wear welding gloves, apron, shielding goggles, cap, etc.
• Before starting work, warm up your body thoroughly to start work under good condition.
• Avoid continuing work for long hours and take rests with proper intervals to keep your body in good condition. Take a rest in a specified safe place.
• When you work in high places, use a platform.
• Before you start the work, use the personal fallarrest equipment to prevent falling. There is a danger of personal accident that you fall by slipping.
• Always do the work correctly. If you find the unsafe behavior of co-worker, give him/her a notice and stop it.
• Because there is a danger that you are caught, be very careful when the work is done in dangerous areas such as: when you go in the range where the lifted load possibly falls, or when you stand directly in front of tire, or when you are near the sliding parts.

TABLE OF CONTENTS:

Komatsu ARTICULATED DUMP TRUCK HM400-3 Shop Manual SEN05632-21 – PDF DOWNLOAD

SERIAL NUMBERS 3001 and up

Cover 1
00 Index and foreword 3
Index 4
Foreword, safety and general information 19
Important safety notice 19
How to read the shop manual 26
Explanation of terms for maintenance standard 28
Handling equipment of fuel system devices 30
Handling of intake system parts 31
Handling of hydraulic equipment 32
Method of disconnecting and connecting of push-pull type coupler 34
Handling of electrical equipment 37
How to read electric wire code 45
Precautions when performing operation 48
Practical use of KOMTRAX 53
Standard tightening torque table 54
List of abbreviation 60
Conversion table 65
01 Specification 71
Table of contents 72
Specifications 73
Specification drawing 73
Specifications 75
Weight table 81
Table of fuel, coolant, and lubricants 82
10 Structure and function 85
Table of contents 86
Engine and cooling system 88
Engine related parts 88
Output shaft 90
VGT 91
EGR system piping drawing 97
EGR system circuit diagram 99
EGR valve 100
EGR cooler 102
KCCV layout drawing 104
KCCV ventilator 106
KDPF 108
Cooling system 114
Radiator fan pump 116
Aftercooler fan motor 125
Radiator fan motor 136
Center brake cooling remote motor 145
Center brake cooling remote pump 149
Oil cooler bypass valve 150
Power train 151
Power train system 151
Drive shaft 153
Torque converter and transmission hydraulic piping 154
Torque converter 155
Transmission 161
Transmission control valve 186
Forward and reverse clutch ECMV and gear speed clutch ECMV 189
Lockup clutch ECMV 196
Differential lock clutch ECMV 200
Main relief valve, torque converter relief valve, and main flow selector valve 204
Axle 210
Differential 213
Final drive 217
Steering system 220
Layout of steering devices 220
Steering column 221
Flow amplifier valve 222
Steering valve 226
Emergency steering pump 231
Brake system 233
Layout of brake parts 233
Parking brake solenoid and accumulator charge valve 235
Accumulator 241
Shut off solenoid valve 242
Brake valve 243
Proportional pressure reducing valve 248
Slack adjuster 250
Brake 254
Brake system tank 257
Parking brake 258
Undercarriage and frame 261
Suspension 261
Suspension cylinder 265
Oscillation hitch 268
Hydraulic system 269
Hydraulic component layout 269
Dump body control 271
Hydraulic tank 272
Steering and hoist pump 273
Hoist valve 284
Steering pump selector solenoid valve 290
Dump EPC valve 291
Center brake cooling remote motor 293
Front brake cooling relief valve 302
Center brake cooling relief valve 303
Cab and its attachments 304
ROPS cab 304
Cab tilt 305
Electrical system 306
Electrical control system 306
Machine monitor system 335
Rear view monitor system 358
KOMTRAX system 362
System component parts 366
Sensor 393
20 Standard value tables 441
Table of contents 442
Standard service value table 443
Standard value table for engine 443
Standard value table for machine 445
30 Testing and adjusting 453
Table of contents 454
Precautions before work 456
Related information on testing and adjusting 458
Tools for testing and adjusting 458
Sketch of tools for testing and adjusting 464
Engine and cooling system 467
Testing engine speed 467
Testing boost pressure 468
Testing exhaust gas temperature 470
Testing exhaust gas color 472
Test mass air flow and temperature sensor 474
Adjusting valve clearance 476
Testing compression pressure 478
Testing blowby pressure 480
Testing engine oil pressure 482
Testing EGR valve and VGT driving oil pressure 484
Testing fuel pressure 485
Handling cylinder cutout mode operation 486
Handling no‐injection cranking operation 487
Testing fuel return rate and leakage 488
Bleeding air from fuel circuit 491
Testing fuel circuit for leakage 492
Testing radiator fan and aftercooler fan speed 493
Replacing and adjusting belt for alternator and air conditioner compressor 494
Procedures for cleaning fuel doser 495
Writing compensation values at replacement of injector and engine controller 498
Writing compensation amount for soot accumulation caused by ash onengine controller 502
Power train 506
Testing torque converter stall speed 506
Testing power train oil pressure 508
Adjusting transmission speed sensor 519
Adjusting transmission controller 522
Retrieval of disabled machine that resulted from a trouble in electrical system 523
Retrieval of disabled machine due to traction control system (KTCS) failure 527
Steering system 529
Testing and adjusting steering circuit oil pressure 529
Bleed air from the steering cylinder circuit 531
Testing and adjusting articulate angle sensor 533
Brake system 535
Testing and adjusting brake oil pressure 535
Testing accumulator nitrogen gas pressure and charging procedure for accumulator nitrogen gas 539
Testing braking performance 547
Releasing remaining pressure in brake circuit 548
Bleeding air from brake circuit 550
Testing wear of wheel brake disc 551
Parking brake emergency releasing procedure 552
Testing wear of parking brake pad and adjusting clearance 553
Hydraulic system 555
Testing and adjusting suspension cylinder 555
Testing and adjusting dump circuit oil pressure 560
Work equipment 563
Adjusting dump body positioner sensor 563
Testing and adjusting body mount 565
Cab and its attachments 567
Cab tilt-up procedure 567
Adjusting steering wheel tilt locklever 571
Electrical system 573
Setting and adjusting each equipment 573
Special functions of machine monitor 584
KOMTRAX terminal start-up procedure 659
Adjusting optical axis of headlamps 663
Handling voltage circuit of engine controller 667
Handling battery disconnect switch 668
Pm clinic 669
Pm Clinic service 669
40 Troubleshooting 677
Table of contents 678
Precautions before work 687
Related information on troubleshooting 689
Troubleshooting points 689
Sequence of events in troubleshooting 691
Check before troubleshooting 693
Inspection procedure before troubleshooting 695
Classification and procedures for troubleshooting 714
Symptom and troubleshooting numbers 717
Information in troubleshooting table 720
Preparation for troubleshooting of electrical system 722
Connector list and layout 728
Connector contact identification 744
T-branch box and T-branch adapter table 783
Fuse location table 788
Precautions for KDPF (KCSF and KDOC) Cleaning and Replacement 792
Precautions on troubleshooting of machine monitor 795
Processing procedure of harness checker for troubleshooting of machine monitor LCD unit 797
Preparation of dummy temperature sensor (for KDOC and KDPF temperature sensors) 802
Preparation of short circuit electrical connector (for failure codes [CA1883] and [CA3135]) 803
Failure codes table 804
Troubleshooting by failure code (Display of code) 826
Failure code [1500L0] Double Engagement of T/M Clutches 826
Failure code [15B0NX] Transmission Oil Filter Clogging 827
Failure code [15F0KM] Abuse 1 of Gear Shifting from R to F 828
Failure code [15F0MB] Abuse 2 of Gear Shifting from R to F 829
Failure code [15F7KM] Abuse of TM Forward Clutch Disk 830
Failure code [15G0MW] Failure of Clutch (Reverse) 831
Failure code [15G7KM] Abuse of TM Reverse Clutch Disk 834
Failure code [15H0MW] Failure of Clutch (High) 835
Failure code [15J0MW] Failure of Clutch (Low) 838
Failure code [15K0MW] Failure of Clutch (1st) 841
Failure code [15L0MW] Failure of Clutch (2nd) 844
Failure code [15M0MW] Failure of Clutch (3rd) 847
Failure code [15SBL1] Release Trouble of ECMV (Reverse) 850
Failure code [15SBMA] Malfunction of ECMV (Reverse) 853
Failure code [15SCL1] Release Trouble of ECMV (High) 854
Failure code [15SCMA] Malfunction of ECMV (High) 857
Failure code [15SDL1] Release Trouble of ECMV (Low) 858
Failure code [15SDMA] Malfunction of ECMV (Low) 861
Failure code [15SEL1] Release Trouble of ECMV (1st) 862
Failure code [15SEMA] Malfunction of ECMV (1st) 865
Failure code [15SFL1] Release Trouble of ECMV (2nd) 866
Failure code [15SFMA] Malfunction of ECMV (2nd) 869
Failure code [15SGL1] Release Trouble of ECMV (3rd) 870
Failure code [15SGMA] Malfunction of ECMV (3rd) 873
Failure code [15SJMA] Malfunction of ECMV (Lockup) 874
Failure code [15SKMA] Malfunction of ECMV (Inter-Axle Diff) 876
Failure code [2F00KM] Dragging of Parking Brake 878
Failure code [2G42ZG] Accumulator Oil Pressure Low (Front) 880
Failure code [2G43ZG] Accumulator Oil Pressure Low (Rear) 881
Failure code [879AKA] A/C Inner Sensor Open Circuit 882
Failure code [879AKB] A/C Inner Sensor Short Circuit 883
Failure code [879BKA] A/C Outer Sensor Open Circuit 884
Failure code [879BKB] A/C Outer Sensor Short Circuit 885
Failure code [879CKA] Ventilating Sensor Open Circuit 886
Failure code [879CKB] Ventilating Sensor Short Circuit 887
Failure code [879EMC] Ventilation Damper Abnormality 888
Failure code [879FMC] Air Mix Damper Abnormality 889
Failure code [879GKX] Refrigerant Abnormality 890
Failure code [989D00] Tilt Caution 891
Failure code [989L00] Engine Controller Lock Caution1 892
Failure code [989M00] Engine Controller Lock Caution2 893
Failure code [989N00] Engine Controller Lock Caution3 894
Failure code [A1U0N3] HC Desorb Request 1 895
Failure code [A1U0N4] HC Desorb Request 2 897
Failure code [AA10NX] Air Cleaner Clogging 899
Failure code [AB00KE] Charge Voltage Low 901
Failure code [AB00KY] Hot Short of Alternator R Terminal 903
Failure code [B@BAZG] Eng Oil Press Low 905
Failure code [B@BAZK] Engine Oil Level Low 906
Failure code [B@BCNS] Eng Water Overheat 907
Failure code [B@BCZK] Eng Water Level Low 908
Failure code [B@C6NS] Retarder Oil Overheat (Front) 910
Failure code [B@C8NS] Retarder Oil Overheat (Center) 911
Failure code [B@CENS] T/C Oil Temp Overheat 912
Failure code [B@JANS] Steering Oil Overheat 913
Failure code [CA115] Eng Ne and Bkup Speed Sens Error 914
Failure code [CA122] Chg Air Press Sensor High Error 915
Failure code [CA123] Chg Air Press Sensor Low Error 917
Failure code [CA131] Throttle Sensor High Error 919
Failure code [CA132] Throttle Sensor Low Error 921
Failure code [CA135] Eng Oil Press Sensor High Error 924
Failure code [CA141] Eng Oil Press Sensor Low Error 926
Failure code [CA144] Coolant Temp Sens High Error 928
Failure code [CA145] Coolant Temp Sens Low Error 930
Failure code [CA153] Chg Air Temp Sensor High Error 932
Failure code [CA154] Chg Air Temp Sensor Low Error 934
Failure code [CA187] Sensor 2 Supply Volt Low Error 936
Failure code [CA221] Ambient Press Sens High Error 938
Failure code [CA222] Ambient Press Sens Low Error 940
Failure code [CA227] Sensor 2 Supply Volt High Error 942
Failure code [CA234] Eng Overspeed 943
Failure code [CA238] Ne Speed Sensor Supply Volt Error 944
Failure code [CA239] Ne Speed Sens Supply Volt High Error 945
Failure code [CA271] IMV/PCV1 Short Error 946
Failure code [CA272] IMV/PCV1 Open Error 947
Failure code [CA273] PCV2 Short Error 948
Failure code [CA274] PCV2 Open Error 949
Failure code [CA322] Inj #1(L#1) Open/Short Error 950
Failure code [CA323] Inj #5(L#5) Open/Short Error 952
Failure code [CA324] Inj #3(L#3) Open/Short Error 954
Failure code [CA325] Inj #6(L#6) Open/Short Error 956
Failure code [CA331] Inj #2(L#2) Open/Short Error 958
Failure code [CA332] Inj #4(L#4) Open/Short Error 960
Failure code [CA343] ECM Critical Internal Failure 962
Failure code [CA351] Injectors Drive Circuit Error 963
Failure code [CA352] Sensor 1 Supply Volt Low Error 964
Failure code [CA356] Mass Air Flow Sensor High Error 966
Failure code [CA357] Mass Air Flow Sensor Low Error 968
Failure code [CA386] Sensor 1 Supply Volt High Error 970
Failure code [CA431] Idle Validation Sw Error 971
Failure code [CA432] Idle Validation Process Error 974
Failure code [CA441] Battery Voltage Low Error 977
Failure code [CA442] Battery Voltage High Error 979
Failure code [CA449] Rail Press Very High Error 980
Failure code [CA451] Rail Press Sensor High Error 981
Failure code [CA452] Rail Press Sensor Low Error 983
Failure code [CA515] Rail Press Sens Sup Volt High Error 985
Failure code [CA516] Rail Press Sens Sup Volt Low Error 987
Failure code [CA553] Rail Press High Error 989
Failure code [CA555] Crankcase Press High Error 1 990
Failure code [CA556] Crankcase Press High Error 2 991
Failure code [CA559] Rail Press Low Error 992
Failure code [CA595] Turbo Speed High Error 2 996
Failure code [CA687] Turbo Speed Low Error 997
Failure code [CA689] Eng Ne Speed Sensor Error 999
Failure code [CA691] Intake Air Temp Sens High Error 1001
Failure code [CA692] Intake Air Temp Sens Low Error 1003
Failure code [CA697] ECM Internal Temp Sensor High Error 1005
Failure code [CA698] ECM Int Temp Sensor Low Error 1006
Failure code [CA731] Eng Bkup Speed Sens Phase Error 1007
Failure code [CA778] Eng Bkup Speed Sensor Error 1008
Failure code [CA1117] Persistent Data Lost Error 1010
Failure code [CA1664] KDOC Malfunction 1011
Failure code [CA1691] Regeneration Ineffective 1014
Failure code [CA1695] Sensor 5 Supply Volt High Error 1017
Failure code [CA1696] Sensor 5 Supply Volt Low Error 1019
Failure code [CA1843] Crankcase Press Sens High Error 1021
Failure code [CA1844] Crankcase Press Sens Low Error 1023
Failure code [CA1879] KDPF Delta P Sensor High Error 1025
Failure code [CA1881] KDPF Delta P Sensor Low Error 1027
Failure code [CA1883] KDPF Delta P Sens In Range Error 1029
Failure code [CA1921] KDPF Soot Load High Error 1 1034
Failure code [CA1922] KDPF Soot Load High Error 2 1037
Failure code [CA1923] Dosing Fuel Valve 1 High Error 1042
Failure code [CA1924] Dosing Fuel Valve 1 Low Error 1044
Failure code [CA1925] Dosing Fuel Valve 1 In Range Error 1046
Failure code [CA1927] Dosing Fuel Press Sens High Error 1048
Failure code [CA1928] Dosing Fuel Press Sens Low Error 1050
Failure code [CA1942] Crankcase Press Sens In Range Error 1052
Failure code [CA1963] Dosing Fuel Valve 1 Servo Error 1053
Failure code [CA1977] Fuel Doser Open/Short Error 1057
Failure code [CA1993] KDPF Delta Pressure Low Error 1059
Failure code [CA2185] Throt Sensor Sup Volt High Error 1063
Failure code [CA2186] Throt Sensor Sup Volt Low Error 1065
Failure code [CA2249] Rail Press Very Low Error 1067
Failure code [CA2265] Fuel Feed Pump Open Error 1068
Failure code [CA2266] Fuel Feed Pump Short Error 1070
Failure code [CA2271] EGR Valve Pos Sens High Error 1072
Failure code [CA2272] EGR Valve Pos Sens Low Error 1074
Failure code [CA2349] EGR Valve Solenoid Open Error 1076
Failure code [CA2353] EGR Valve Solenoid Short Error 1078
Failure code [CA2357] EGR Valve Servo Error 1080
Failure code [CA2381] KVGT Pos Sens High Error 1081
Failure code [CA2382] KVGT Pos Sens Low Error 1083
Failure code [CA2383] KVGT Solenoid Open Error 1085
Failure code [CA2386] KVGT Solenoid Short Error 1087
Failure code [CA2387] KVGT Servo Error 0
Failure code [CA2555] Grid Htr Relay Volt Low Error 1094
Failure code [CA2556] Grid Htr Relay Volt High Error 1096
Failure code [CA2637] KDOC Face Plugging 1098
Failure code [CA2639] Manual Stationary Regeneration Request 1100
Failure code [CA2732] Dosing Fuel Valve 2 High Error 1103
Failure code [CA2733] Dosing Fuel Valve 2 Low Error 1105
Failure code [CA2741] Dosing Fuel Valve Swap Error 1107
Failure code [CA2765] Inj Trim Data Error 1108
Failure code [CA2878] Dosing Fuel Valve 2 Servo Error 1109
Failure code [CA2881] Dosing Fuel Pressure Low Error 1 1112
Failure code [CA3133] KDPF Outlet Press Sens High Error 1117
Failure code [CA3134] KDPF Outlet Press Sens Low Error 1119
Failure code [CA3135] KDPF Outlet Press Sens In Range Error 1121
Failure code [CA3167] Fuel Doser Degradation 1125
Failure code [CA3251] KDOC Inlet Temp High Error 1128
Failure code [CA3253] KDOC Temp Error – Non Regeneration 1131
Failure code [CA3254] KDOC Outlet Temp High Error 1 1134
Failure code [CA3255] KDPF Temp Error – Non Regeneration 1137
Failure code [CA3256] KDPF Outlet Temp High Error 1 1141
Failure code [CA3311] KDOC Outlet Temp High Error 2 1144
Failure code [CA3312] KDPF Outlet Temp High Error 2 1147
Failure code [CA3313] KDOC Inlet Temp Sensor Low Error 1150
Failure code [CA3314] KDOC Inlet Temp Sens High Error 1153
Failure code [CA3315] KDOC Inlet Temp Sens In Range Error 1157
Failure code [CA3316] KDOC Outlet Temp Sens Low Error 1162
Failure code [CA3317] KDOC Outlet Temp Sens High Error 1165
Failure code [CA3318] KDOC Outlet Temp Sens In Range Error 1169
Failure code [CA3319] KDPF Outlet Temp Sens High Error 1174
Failure code [CA3321] KDPF Outlet Temp Sens Low Error 1178
Failure code [CA3322] KDPF Outlet Temp Sens In Range Error 1181
Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error 1186
Failure code [CA3421] Mass Air Flow Sensor Sup Volt Low Error 1188
Failure code [D150KB] Ground Fault of Emerg Steering Relay 1190
Failure code [D150KZ] Failure of Emerg Steering Relay 1191
Failure code [D151KB] Ground Fault of Emerg Steering Relay 2 1192
Failure code [D151KZ] Failure of Emerg Steering Relay 2 1193
Failure code [D164KY] Hot Short of Head Light High Selector 1194
Failure code [D19HKZ] Failure of Stop Lamp (R&L) 1195
Failure code [D19JKZ] Personal Code Relay Abnormality 1197
Failure code [D1EHKA] Disconnection of Engine Start Relay 1198
Failure code [D1EHKB] Ground Fault of Engine Start Relay 1199
Failure code [D1EHKY] Hot Short of Engine Start Relay 1200
Failure code [D1EMKA] Disconnection of Parking Interlock Relay 1201
Failure code [D1EMKB] Ground Fault of Parking Interlock Relay 1202
Failure code [D1EMKY] Hot Short of Parking Interlock Relay 1203
Failure code [D1FBKB] Ground Fault of Sol Self-Holding Relay 1204
Failure code [D5ZHL6] Disconnection of Key SW C 1205
Failure code [D811MC] KOMTRAX Error 1207
Failure code [D862KA] GPS Antenna Open Circuit 1208
Failure code [D8ALKA] Operating Lamp Open Circuit (KOMTRAX) 1209
Failure code [D8ALKB] Operating Lamp Short Circuit (KOMTRAX) 1211
Failure code [D8AQK4] CAN2 Discon (KOMTRAX) 2 1213
Failure code [D8AQKR] CAN2 Discon (KOMTRAX) 1214
Failure code [DAF0KT] Abnormality of Non-volatile Memory (MON) 1215
Failure code [DAF0MB] Monitor ROM Abnormality 1216
Failure code [DAF0MC] Monitor Error 1217
Failure code [DAF3KK] Controller Power Source Low (MON) 1218
Failure code [DAF8KB] Camera Power Supply Short Circuit 1220
Failure code [DAFDKB] Monitor 12V Power Output Short Circuit 1221
Failure code [DAFGMC] GPS Module Error 1223
Failure code [DAFLKA] Operating Lamp Open Circuit (MON) 1224
Failure code [DAFLKB] Operating Lamp Short Circuit (MON) 1226
Failure code [DAFQKR] CAN2 Discon (Monitor) 1228
Failure code [DAQ0KK] Controller Power Source Low (T/M) 1229
Failure code [DAQ0KT] Abnormality of Non-volatile Memory (T/M) 1231
Failure code [DAQ0MC] T/M Con Error 1232
Failure code [DAQ1KA] Disconnection of Key SW ACC (T/M) 1233
Failure code [DAQ2KK] Solenoid Power Source Low (T/M) 1235
Failure code [DAQ9KQ] Inconsistency of Model Selection (T/M) 1237
Failure code [DAQLKA] Operating Lamp Open Circuit (T/M) 1238
Failure code [DAQLKB] Operating Lamp Short Circuit (T/M) 1240
Failure code [DAQQKR] CAN2 Discon (Transmission Con) 1242
Failure code [DAQRKR] CAN1 Discon (Transmission Con) 1243
Failure code [DAQRMA] Inconsistency of Option Selection (T/M) 1244
Failure code [DAZ9KQ] A/C Model Selection Abnormality 1245
Failure code [DAZQKR] CAN2 Discon (Aircon ECU) 1246
Failure code [DB10KT] Abnormality of Non-volatile Memory (RHC) 1247
Failure code [DB10MC] RHC Error 1248
Failure code [DB11KA] Disconnection of Key SW ACC (RHC) 1249
Failure code [DB12KK] Solenoid Power Source Low (RHC) 1251
Failure code [DB13KK] Controller Power Source Low (RHC) 1253
Failure code [DB19KQ] Inconsistency of Model Selection (RHC) 1255
Failure code [DB1LKA] Disconnection of System Ope Lamp (RHC) 1256
Failure code [DB1LKB] Short Circuit of System Ope Lamp (RHC) 1258
Failure code [DB1QKR] CAN2 Discon (Retarder Hoist Con) 1260
Failure code [DB1QMA] Inconsistency of Option Selection (RHC) 1261
Failure code [DB1RKR] CAN1 Discon (Retarder Hoist Con) 1262
Failure code [DB2QKR] CAN2 Discon (Engine Con) 1263
Failure code [DB2RKR] CAN1 Discon (Engine Con) 1268
Failure code [DBSQKR] CAN2 Discon (PLM) 1273
Failure code [DBSQKQ] Inconsistency of Model Selection (PLM) 1277
Failure code [DD1ML4] Failure of ARAC SW 1278
Failure code [DDAAL6] Discon of Engine Shutdown Secondary Switch 1281
Failure code [DDTHKA] Disconnection of Fill Switch (High) 1283
Failure code [DDTJKA] Disconnection of Fill Switch (Low) 1285
Failure code [DDTKKA] Disconnection of Fill Switch (1st) 1287
Failure code [DDTLKA] Disconnection of Fill Switch (2nd) 1289
Failure code [DDTMKA] Disconnection of Fill Switch (3rd) 1291
Failure code [DDTNKA] Disconnection of Fill Switch (Reverse) 1293
Failure code [DF10KA] Disconnection of Shift Lever Input 1295
Failure code [DF10KB] Ground Fault of Shift Lever Input 1298
Failure code [DGF1KX] Out of Range of T/M Oil Temp Sensor 1302
Failure code [DGR3KB] Ground Fault of Retarder Oil Temp S(C) 1304
Failure code [DGR3L8] Failure of Retarder Oil Temp Sensor (C) 1305
Failure code [DGR4KB] Ground Fault of Retarder Oil Temp S(F) 1306
Failure code [DGR4L8] Failure of Retarder Oil Temp Sensor (F) 1307
Failure code [DGR6KB] Ground Fault of Steering Oil Temp S 1309
Failure code [DGR6L8] Failure of Steering Oil Temp Sensor 1310
Failure code [DGR7KX] Out of Range of Piston Pump Oil Temp S 1312
Failure code [DGT1KX] Out of Range of T/C Oil Temp Sensor 1314
Failure code [DHP4KY] Hot Short of Suspension Press S (FR) 1316
Failure code [DHP4KZ] Failure of Suspension Press S (FR) 1318
Failure code [DHP5KY] Hot Short of Suspension Press S (FL) 1320
Failure code [DHP5KZ] Failure of Suspension Press S (FL) 1322
Failure code [DHP6KY] Hot Short of Suspension Press S (RR) 1324
Failure code [DHP6KZ] Failure of Suspension Press S (RR) 1326
Failure code [DHP7KY] Hot Short of Suspension Press S (RL) 1328
Failure code [DHP7KZ] Failure of Suspension Press S (RL) 1330
Failure code [DHQ2KX] Out of Range of Main Flow Sel Valve S 1332
Failure code [DHT5KX] Out of Range of T/C Input Pressure Sensor 1334
Failure code [DHT5L6] Failure of T/C Oil Press Sensor 1336
Failure code [DHT8KX] Out of Range of Steering Oil Press S 1338
Failure code [DHT8ZG] Steering Oil Pressure Low 1340
Failure code [DHU2KX] Out of Range of Acc Oil Press S (F) 1341
Failure code [DHU3KX] Out of Range of Acc Oil Press S (R) 1343
Failure code [DHUAKX] Out of Range of Retarder Press S (CR) 1345
Failure code [DHUBKX] Out of Range of Retarder Press S (FR) 1347
Failure code [DHUCKX] Out of Range of Parking Brake Press S 1349
Failure code [DHUDKX] Out of Range of Emerg Steering Press S1 1351
Failure code [DHUEKX] Out of Range of Emerg Steering Press S2 1353
Failure code [DHUQKX] Out of Range of Retarder Press S (FL) 1355
Failure code [DHURKX] Out of Range of Retarder Press S (CL) 1357
Failure code [DJF1KA] Disconnection of Fuel Level Sensor 1359
Failure code [DK30KX] Out of Range of Steering Angle Pot 1361
Failure code [DK51L5] Failure of Retarder Lever Pot and RVS 1363
Failure code [DK52KX] Out of Range of Hoist Lever Potentio 1366
Failure code [DK53L8] Failure of Hoist Lever Potentio 1368
Failure code [DK54KX] Out of Range of Body Potentio 1369
Failure code [DK60KX] Out of Range of Acceleration Sensor 1371
Failure code [DKH0KX] Out of Range of Inclination Angle Sensor 1373
Failure code [DKH1KX] Out of Range of Long Inclination Angle S 1375
Failure code [DLF1KA] Disconnection of T/M Input Speed Sensor 1377
Failure code [DLF1LC] Failure of T/M Input Speed Sensor 1379
Failure code [DLF2KA] Disconnection of T/M Inter Speed Sensor 1381
Failure code [DLF2LC] Failure of T/M Intermediate Speed Sensor 1383
Failure code [DLF400] T/M Diff Overrun Prevention Activated 1385
Failure code [DLF4KA] Disconnection of T/M Diff Speed Sensor 1386
Failure code [DLF4LC] Failure of T/M Diff Speed Sensor 1388
Failure code [DLF6LC] Failure of Wheel Speed Sensor (FR) 1390
Failure code [DLF7LC] Failure of Wheel Speed Sensor (FL) 1392
Failure code [DLFDLC] Failure of Wheel Speed Sensor (CR) 1394
Failure code [DLFELC] Failure of Wheel Speed Sensor (CL) 1396
Failure code [DLFFLC] Failure of Wheel Speed Sensor (Front) 1398
Failure code [DLFGLC] Failure of Wheel Speed Sensor (Center) 1399
Failure code [DLM3KA] Disconnection of Radiator Fan Speed Sensor 1400
Failure code [DLM3LC] Failure of Radiator Fan Speed Sensor 1402
Failure code [DLM3MB] Radiator Fan Control Mismatch 1404
Failure code [DLM4KA] Disconnection of CAC Fan Speed Sensor 1405
Failure code [DLM4LC] Failure of CAC Fan Speed Sensor 1407
Failure code [DLM4MB] CAC Fan Control Mismatch 1409
Failure code [DLT3KA] Disconnection of Output Speed Sens (Main) 1410
Failure code [DLT3LC] Failure of Output Speed Sensor (Main) 1412
Failure code [DPQ1KR] LIN Discon (Switch Panel) 1414
Failure code [DPQ2KR] LIN Discon (LED Unit) 1417
Failure code [DPQ3KR] LIN Discon (Rear View Monitor) 1420
Failure code [DSJ0KR] CAN2 Discon (Meter Unit) 1423
Failure code [DV00KB] Ground Fault of Buzzer Output 1424
Failure code [DW2BKA] Disconnection of Main Flow Selector Sol 1426
Failure code [DW2BKB] Ground Fault of Main Flow Selector Sol 1427
Failure code [DW2BKY] Hot Short of Main Flow Selector Sol 1428
Failure code [DW2BL1] Release Trouble of Main Flow Sel Valve 1429
Failure code [DW2BLH] Malfunction of Main Flow Selector Valve 1430
Failure code [DW4BK4] Release Trouble of Parking Brake Valve 1431
Failure code [DW4BMA] Malfunction of Parking Brake Valve 1433
Failure code [DW72KZ] Failure of Kick out Solenoid 1434
Failure code [DW73KA] Disconnection of Hoist Selector Sol 1436
Failure code [DW73KB] Ground Fault of Hoist Selector Sol 1438
Failure code [DW73KY] Hot Short of Hoist Selector Sol 1440
Failure code [DW7BKB] Ground Fault of Radiator Fan Rev Sol 1442
Failure code [DW7BKY] Hot Short of Radiator Fan Rev Sol 1444
Failure code [DW7BKZ] Failure of Radiator Fan Rev Sol 1445
Failure code [DW7LKB] Ground Fault of CAC Fan Rev Sol 1447
Failure code [DW7LKY] Hot Short of CAC Fan Rev Sol 1448
Failure code [DW7LKZ] Failure of CAC Fan Rev Sol 1449
Failure code [DW7NKZ] Failure of Steering Pump Selector Sol 1450
Failure code [DWNJKZ] Failure of TCS Shut off Sol (Front) 1452
Failure code [DWNKKZ] Failure of TCS Shut off Sol (Center) 1454
Failure code [DX13KA] Disconnection of Hoist EPC Solenoid 1456
Failure code [DX13KB] Ground Fault of Hoist EPC Solenoid 1458
Failure code [DX13KY] Hot Short of Hoist EPC Solenoid 1460
Failure code [DX16KA] Disconnection of Rad Fan Pump EPC Sol 1462
Failure code [DX16KB] Ground Fault of Rad Fan Pump EPC Sol 1463
Failure code [DX16KY] Hot Short of Radiator Fan Pump EPC Sol 1465
Failure code [DX29KA] Disconnection of CAC Fan Pump EPC Sol 1466
Failure code [DX29KB] Ground Fault of CAC Fan Pump EPC Sol 1467
Failure code [DX29KY] Hot Short of CAC Fan Pump EPC Sol 1468
Failure code [DX30K4] Release Trouble of Retarder EPC Valve(FL) 1469
Failure code [DX30KA] Disconnection of Retarder EPC Sol (FL) 1471
Failure code [DX30KB] Ground Fault of Retarder EPC Sol (FL) 1473
Failure code [DX30KY] Hot Short of Retarder EPC Sol (FL) 1475
Failure code [DX30MA] Malfunction of Retarder EPC Valve (FL) 1477
Failure code [DX31K4] Release Trouble of Retarder EPC Valve(CR) 1479
Failure code [DX31KA] Disconnection of Retarder EPC Sol (CR) 1481
Failure code [DX31KB] Ground Fault of Retarder EPC Sol (CR) 1483
Failure code [DX31KY] Hot Short of Retarder EPC Sol (CR) 1485
Failure code [DX31MA] Malfunction of Retarder Valve (CR) 1487
Failure code [DX32K4] Release Trouble of Retarder EPC Valve(CL) 1489
Failure code [DX32KA] Disconnection of Retarder EPC Sol (CL) 1491
Failure code [DX32KB] Ground Fault of Retarder EPC Sol (CL) 1493
Failure code [DX32KY] Hot Short of Retarder EPC Sol (CL) 1495
Failure code [DX32MA] Malfunction of Retarder EPC Valve (CL) 1497
Failure code [DX33K4] Release Trouble of Retarder EPC Valve (FR) 1499
Failure code [DX33KA] Disconnection of Retarder EPC Sol (FR) 1501
Failure code [DX33KB] Ground Fault of Retarder EPC Sol (FR) 1503
Failure code [DX33KY] Hot Short of Retarder EPC Sol (FR) 1505
Failure code [DX33MA] Malfunction of Retarder EPC Valve (FR) 1507
Failure code [DX34KA] Disconnection of Remote Cooling EPC Sol 1509
Failure code [DX34KB] Ground Fault of Remote Cooling EPC Sol 1510
Failure code [DX34KY] Hot Short of Remote Cooling EPC Sol 1512
Failure code [DXH0KA] Disconnection of ECMV (Inter-Axle Diff) 1513
Failure code [DXH0KB] Ground Fault of ECMV (Inter-Axle Diff) 1515
Failure code [DXH0KY] Hot Short of ECMV (Inter-Axle Diff) 1517
Failure code [DXH1KA] Disconnection of ECMV Solenoid (Lockup) 1519
Failure code [DXH1KB] Ground Fault of ECMV Solenoid (Lockup) 1521
Failure code [DXH1KY] Hot Short of ECMV Solenoid (Lockup) 1523
Failure code [DXH2KA] Disconnection of ECMV Solenoid (High) 1525
Failure code [DXH2KB] Ground Fault of ECMV Solenoid (High) 1527
Failure code [DXH2KY] Hot Short of ECMV Solenoid (High) 1529
Failure code [DXH3KA] Disconnection of ECMV Solenoid (Low) 1530
Failure code [DXH3KB] Ground Fault of ECMV Solenoid (Low) 1532
Failure code [DXH3KY] Hot Short of ECMV Solenoid (Low) 1534
Failure code [DXH4KA] Disconnection of ECMV Solenoid (1st) 1537
Failure code [DXH4KB] Ground Fault of ECMV Solenoid (1st) 1539
Failure code [DXH4KY] Hot Short of ECMV Solenoid (1st) 1541
Failure code [DXH5KA] Disconnection of ECMV Solenoid (2nd) 1544
Failure code [DXH5KB] Ground Fault of ECMV Solenoid (2nd) 1546
Failure code [DXH5KY] Hot Short of ECMV Solenoid (2nd) 1548
Failure code [DXH6KA] Disconnection of ECMV Solenoid (3rd) 1551
Failure code [DXH6KB] Ground Fault of ECMV Solenoid (3rd) 1553
Failure code [DXH6KY] Hot Short of ECMV Solenoid (3rd) 1555
Failure code [DXH7KA] Disconnection of ECMV Solenoid (Reverse) 1558
Failure code [DXH7KB] Ground Fault of ECMV Solenoid (Reverse) 1560
Failure code [DXH7KY] Hot Short of ECMV Solenoid (Reverse) 1562
Failure code [DY30MA] Malfunction 1 of Emerg Steering Motor 1565
Failure code [DY30MC] Malfunction 2 of Emerg Steering Motor 1568
Failure code [DY30ME] Emerg Steering Long-Time Activated 1571
Failure code [DY32MC] Malfunction 2 of Emerg Steering Motor 2 1573
Troubleshooting of electrical system (E-mode) 1576
E-1 Engine does not start (Engine does not rotate) 1576
E-2 Manual preheating system does not work 1582
E-3 Automatic preheating system does not work 1585
E-4 While preheating is working, preheating pilot lamp does not light up 1587
E-5 All of LCD unit, LED unit and meter unit on machine monitor display nothing 1589
E-6 LCD unit on machine monitor displays nothing 1592
E-7 Backlight of LCD unit on machine monitor is abnormal (Backlight goes out or flickers) 1594
E-8 LCD on machine monitor does not display properly 1596
E-9 Meter unit display on machine monitor is abnormal 1598
E-10 Night lighting lamp of meter unit on machine monitor is abnormal 1601
E-11 LED unit lamp on machine monitor is abnormal 1604
E-12 Night lighting lamp of switch panel on machine monitor is abnormal or switches does not operate properly 1606
E-13 2 switches operation of switch panel on machine monitor does not function 1608
E-14 Switch panel buzzer of machine monitor is abnormal 1610
E-15 Rear view monitor does not light up or backlight flickers 1612
E-16 Rear view monitor images are not displayed clearly 1614
E-17 Rear view monitor brightness cannot be adjusted 1617
E-18 Night lighting lamp of rear view monitor is abnormal 1620
E-19 Rearview monitor does not display images while reverse linked display function is enabled 1622
E-20 Guide line on rear view monitor is not displayed while guide line is set 1625
E-21 Some items of gauges and caution lamps on machine monitor are not displayed properly 1627
E-22 Fuel level gauge does not indicate correct level 1628
E-23 Seat belt caution lamp indication is abnormal 1630
E-24 Machine monitor cannot be operated when starting switch is in OFF position 1631
E-25 Alarm buzzer does not sound 1632
E-26 Alarm buzzer does not stop sounding 1634
E-27 Engine mode selector function does not operate properly 1636
E-28 AISS function does not operate properly 1637
E-29 Hoist lever does not operate properly 1638
E-30 Turn signal lamp and winker lamp (hazard lamp) do not operate properly 1640
E-31 None of headlamp, clearance lamp, and tail lamp lights 1644
E-32 Clearance lamp does not light up 1646
E-33 Tail lamp does not light up 1648
E-34 Low beam of headlamp does not light up 1650
E-35 High beam of headlamp does not light up 1652
E-36 Neither Low beam nor High beam of headlamp lights up 1654
E-37 High beams do not light up while passing switch is operated 1656
E-38 KOMTRAX does not operate properly 1658
E-39 Fuel feed pump does not operate or does not stop automatically1659
Troubleshooting of hydraulic and mechanical system (H-mode) 1663
Information described in troubleshooting table (H-mode) 1663
System chart of hydraulic and mechanical systems 1664
Failure mode and cause table 1666
H-1 Machine does not start 1670
H-2 Machine does not travel smoothly (engine hunts) 1672
H-3 Lockup clutch is not disengaged 1673
H-4 Abnormally large shocks result from starting of machine and gear shifting 1674
H-5 Machine does not upshift 1675
H-6 Machine lacks travel speed or power during travel in lockup drive mode through all gear speeds 1677
H-7 Machine lacks travel speed or power during travel in torque converter drive mode 1678
H-8 Machine lacks travel speed or power during travel in specific gear speed 1679
H-9 Machine starts or gear speed shifts with long time lag 1680
H-10 Torque converter oil temperature is high 1682
H-11 Torque converter oil pressure is low 1683
H-12 Front brake does not work sufficiently 1684
H-13 Center brake does not work sufficiently 1685
H-14 Steering wheel is heavy to turn 1686
H-15 Steering wheel does not move 1687
H-16 Steering wheel swings 1688
H-17 Dump body raise speed or power is slow 1689
H-18 Dump body does not move 1691
H-19 Hydraulic drift of dump body is large 1692
H-20 Radiator fan speed is abnormal (high, low, or stationary) 1693
H-21 Aftercooler fan speed is abnormal (high, low, or stationary) 1694
H-22 Unusual noise is heard from around radiator fan 1695
H-23 Unusual noise is heard from around aftercooler fan 1696
Troubleshooting of engine (S-mode) 1697
Information mentioned in troubleshooting table (S mode) 1697
S-1 When starting switch is turned to START position, engine is not cranked 1698
S-2 The engine cranks but exhaust smoke does not come out 1699
S-3 Fuel is injected but engine does not start (incomplete combustion, engine seems to start but does not) 1700
S-4 Engine startability is poor 1701
S-5 Engine does not pick-up smoothly 1703
S-6 Engine stops during operation 1705
S-7 Engine runs rough or is unstable 1707
S-8 Engine lacks power 1708
S-9 KDPF gets clogged in a short time 1710
S-10 Engine oil consumption is excessive 1712
S-11 Engine oil becomes contaminated early 1713
S-12 Fuel consumption is excessive 1714
S-13 Oil is in coolant (or coolant spurts or coolant level goes down) 1715
S-14 Oil pressure drops 1716
S-15 Fuel mixes into engine oil 1717
S-16 Water mixes into engine oil (milky) 1718
S-17 Coolant temperature rises too high (overheating) 1719
S-18 Unusual noise is heard 1720
S-19 Vibration is excessive 1721
S-20 Air cannot be bled from fuel circuit 1722
S-21 Active regeneration is executed frequently 1723
S-22 Active regeneration takes a long time 1724
S-23 White smoke is exhausted during active regeneration 1725
50 Disassembly and assembly 1727
Table of contents 1728
Precautions before work1730
Related information on disassembly and assembly1732
How to read this manual1732
Coating materials list1734
Special tools list1739
Sketches of special tools1761
Engine and cooling system1787
Removal and installation of supply pump assembly1787
Removal and installation of injector assembly1791
Removal and installation of cylinder head assembly1813
Removal and installation of radiator assembly1841
Removal and installation of cooling fan and fan motor assembly for radiator1850
Removal and installation of aftercooler assembly1859
Removal and installation of cooling fan and fan motor assembly for aftercooler1864
Removal and installation of engine assembly1867
Removal and installation of engine front oil seal1879
Removal and installation of engine rear oil seal1883
Removal and installation of output shaft assembly1891
Disassembly and assembly of output shaft assembly1898
Removal and installation of KDPF assembly1901
Disassembly and assembly of KDPF assembly1906
Removal and installation of KCCV assembly1918
Removal and installation of air cleaner assembly1921
Power Train1924
Removal and installation of transmission and front differential assembly1924
Disconnection and connection of front differential assembly and transmissionassembly1946
Disassembly and assembly of front differential assembly1949
Disassembly and assembly of torque converter assembly1984
Disassembly and assembly of transmission assembly1995
Removal and installation of center differential assembly2059
Disassembly and assembly of center differential assembly2065
Removal and installation of rear differential assembly2099
Disassembly and assembly of rear differential assembly2103
Removal and installation of front final drive and brake assembly2122
Disassembly and assembly of front final drive and brake assembly2126
Removal and installation of center final drive and brake assembly2159
Disassembly and assembly of center final drive and brake assembly2164
Removal and installation of rear final drive assembly2193
Disassembly and assembly of rear final drive assembly2198
Removal and installation of center axle assembly2207
Removal and installation of rear axle assembly2213
Steering system2217
Disassembly and assembly of steering cylinder assembly2217
Disassembly and assembly of steering valve2226
Undercarriage and frame2238
Removal and installation of front suspension cylinder assembly2238
Removal and installation of rear suspension cylinder assembly2240
Disassembly and assembly of suspension cylinder assembly2242
Removal and installation of equalizer bar assembly2244
Removal and installation of front wheel assembly2248
Removal and installation of rear (front side) wheel assembly2258
Removal and installation of rear (rear side) wheel assembly2259
Removal and installation of hitch frame assembly2260
Disassembly and assembly of hitch frame assembly2271
Hydraulic system2277
Removal and installation of flow amplifier valve assembly2277
Removal and installation of hoist valve assembly2282
Disassembly and assembly of hoist valve assembly2288
Disassembly and assembly of hoist cylinder assembly2291
Body2299
Removal and installation of dump body assembly2299
Cab and its attachments2303
Removal and installation of operator’s cab assembly2303
Removal and installation of operator’s cab glass (adhered glass)2309
Removal and installation of operator’s seat assembly (GRAMMER)2317
Removal and installation of operator’s seat assembly (SEARS)2319
Removal and installation of seat belt2322
Electrical system2323
Removal and installation of machine monitor assembly2323
Removal and installation of engine controller assembly2326
Removal and installation of retarder and hoist controller assembly2328
Removal and installation of transmission controller assembly2330
Removal and installation of mass air flow and temperature sensor2332
Removal and installation of KOMTRAX terminal assembly2334
Air conditioner system2335
Removal and installation of air conditioner unit assembly2335
Removal and installation of air conditioner compressor assembly2343
60 Maintenance standard 2347
Table of contents 2348
Engine and cooling system 2349
Engine mount 2349
Output shaft 2350
Radiator fan pump 2351
Radiator fan motor 2353
Aftercooler fan motor 2354
Power train 2356
Drive shaft 2356
Torque converter and transmission mount 2358
Torque converter 2359
Transmission 2362
Transmission control valve 2370
Forward and reverse clutch ECMV and gear speed clutch ECMV 2371
Lockup clutch ECMV 2372
Differential lock clutch ECMV 2373
Main relief valve, torque converter relief valve, and main flow selector valve 2374
Differential 2376
Axle 2379
Final drive 2381
Steering system 2386
Steering column 2386
Steering cylinder 2387
Emergency steering pump 2388
Brake system 2389
Slack adjuster 2389
Brake 2391
Parking brake 2394
Undercarriage and frame 2396
Suspension 2396
Suspension cylinder 2400
Oscillation hitch 2402
Hydraulic system 2404
Steering and hoist pump 2404
Pump for driving torque converter, transmission, aftercooler fan, and center brake cooling motors 2407
Center brake cooling pump 2409
Brake charge pump 2410
Center brake cooling remote pump 2411
Center brake cooling remote motor 2412
Hoist valve 2414
Hoist cylinder 2416
80 Appendix 2417
Table of contents 2418
Precautions before work2419
Air conditioner components 2421
Precautions for refrigerant 2421
Air conditioner component 2422
Configuration and function of refrigeration cycle 2425
Outline of refrigeration cycle 2426
Air conditioner unit 2428
Dual pressure switch 2433
Air conditioner controller 2434
Compressor 2435
Condenser 2436
Receiver drier 2437
Outer temperature sensor (outside air temperature sensor) 2438
Procedure for testing and troubleshooting 2439
Circuit diagram and arrangement of connector pins 2441
System diagram 2443
Input and output signals of the air conditioner controller 2444
Parts and connectors layout 2446
Testing air leakage (duct) 2451
Testing with self-diagnosis function 2454
How to open the electrical system abnormality record screen in service mode of the machine monitor 2455
Testing vent (mode) changeover 2457
Testing FRESH/RECIRC air changeover 2458
Testing (dual) pressure switch for refrigerant 2459
Testing relays 2461
Troubleshooting chart 1 2463
Troubleshooting chart 2 2464
Information in troubleshooting table 2467
Failure code list related to air conditioner 2468
Failure code [879AKA] A/C Inner sensor Open Circuit 2469
Failure code [879AKB] A/C Inner sensor Short Circuit 2470
Failure code [879BKA] A/C Outer sensor Open Circuit 2471
Failure code [879BKB] A/C Outer sensor Short Circuit 2473
Failure code [879CKA] Ventilating sensor Open Circuit 2475
Failure code [879CKB] Ventilating sensor Short Circuit 2476
Failure code [879EMC] Ventilating Damper Abnormality 2477
Failure code [879FMC] Air Mix Damper Abnormality 2478
Failure code [879GKX] Refrigerant Abnormality 2479
A-1 Troubleshooting for power supply system (Air conditioner does not operate) 2481
A-2 Troubleshooting for compressor and refrigerant system (Air is not cooled) 2483
A-3 Troubleshooting for blower motor system (No air comes out or air flow is abnormal) 2486
A-4 Troubleshooting for FRESH/RECIRC air changeover 2488
Troubleshooting with gauge pressure 2490
Connection of service tool 2493
Precautions for disconnecting and connecting air conditioner piping 2495
Handling of compressor oil 2497
90 Diagrams and drawings 2499
Table of contents 2500
Hydraulic circuit diagram 2501
Symbols in hydraulic circuit diagram 2501
Power train hydraulic circuit diagram2505
Hydraulic circuit diagram2507
Electric circuit diagram 2509
Symbols in electric circuit diagram 2509
Inside cab electric circuit diagram2513
Outside cab electrical circuit diagram2527
Circuit diagram related to payload meter2541
INDEX2543

S.M 30/12/24