Komatsu Hydraulic Excavator PC88MR-11 Shop Manual SEN06937-03 PDF
$38.95
Komatsu Hydraulic Excavator PC88MR-11 Shop Manual SEN06937-03 – PDF DOWNLOAD
SERIAL NUMBERS 10001 and up
Description
Komatsu Hydraulic Excavator PC88MR-11 Shop Manual SEN06937-03 – PDF DOWNLOAD
FILE DETAILS:
Komatsu Hydraulic Excavator PC88MR-11 Shop Manual SEN06937-03 – PDF DOWNLOAD
Language : English
Pages :2332
Downloadable : Yes
File Type : PDF
DESCRIPTION:
Komatsu Hydraulic Excavator PC88MR-11 Shop Manual SEN06937-03 – PDF DOWNLOAD
SERIAL NUMBERS 10001 and up
How to Read the Shop Manual
• Some of the attachments and options described in this shop manual may not be available in some areas. If
they are required, consult your Komatsu distributor.
• The materials and specifications are subject to change without notice.
• Shop Manuals are available for “machine part” and “engine part”. For the engine unit, see the shop manual
for the machine which has the same engine model.
• Actual machine may differ from the images which are contained in this manual. A typical model is shown in
the illustrations of this shop manual.
• The caution lamps, pilot lamps, and symbols of the switches on the machine monitor can be different in
accordance with the machine.
• For details of the symbols shown on the machine monitor, see Structure and Operation, “Caution
Lamps Shown on Machine Monitor” and “Pilot Lamps Shown on Machine Monitor”.
• For details of the switches of the machine monitor, see Testing and Adjusting, “Set and Operate Machine
Monitor”.
• For details of the switches, see the “Operation and Maintenance Manual”.
• All “AdBlue/DEF” shown on the machine monitor is referred to as “DEF” in the shop manual. Some machine
monitors installed to the product show “DEF” as “AdBlue/DEF” in the service mode. Thus, be sure to recognize
that “DEF” and “AdBlue/DEF” are the same when you read the shop manual.
REMARK
The illustrations in the shop manual reproduce the display of the machine monitor. They are not always the
same as the terminology in the shop manual.
Composition of the Shop Manual
This shop manual contains technical information necessary to perform services in workshops. It is divided into
the following chapters for the ease of use.
00 Index and Foreword
This section describes the index, foreword, safety, and basic information.
01 Specification
This section describes the specifications of the machine.
10 Structure and Function
This section describes the structure and operation of each component with respect to each system. “Structure
and Function” is helpful in not only understanding the structure of each component but performing troubleshooting.
20 Standard Value Table
This section describes the standard values for new machine and failure criteria for testing and adjusting, and
troubleshooting. Use the standard values table to check the standard values for testing and adjusting, and judge
troubles in troubleshooting.
30 Testing and Adjusting
This section describes the measuring tools and measuring methods for testing and adjusting as well as the adjusting
method of each part. The standard values and repair limit for TESTING AND ADJUSTING are described
in “Standard Value Table”.
40 Troubleshooting
This section describes troubleshooting of failure part and its remedy method on the occurrence of the failure.
Descriptions of troubleshooting are sorted by failure mode.
This section describes the special tools, work procedures, and safety precautions necessary for removal, installation,
disassembly, and assembly of the components and parts. In addition, tightening torques, quantity, and
weight of the coating materials, lubricants, and coolant necessary to these works are shown.
60 Maintenance Standard
This section describes the maintenance standard value of each component. The maintenance standard shows
the criteria and remedies for disassembly and assembly.
80 Others
This section describes the structure and function, testing and adjusting, and troubleshooting for all of the other
components or equipment which cannot be separately classified in the appendix.
90 Circuit Diagrams
This section describes hydraulic circuit diagrams and electrical circuit diagrams.
Symbols
Important safety and quality portions are marked with the following symbols so that shop manual is used effectively.
TABLE OF CONTENTS:
Komatsu Hydraulic Excavator PC88MR-11 Shop Manual SEN06937-03 – PDF DOWNLOAD
SERIAL NUMBERS 10001 and up
Cover 1
00 Index and Foreword 3
Index 4
Foreword, Safety, Basic Information 17
How to Read the Shop Manual 17
Safety Notice for Operation 19
Precautions to Prevent Fire 27
Procedures If Fire Occurs 29
Precautions When You Discard Waste Materials 30
Precautions When You Handle Hydraulic Equipment 31
Precautions When You Disconnect and Connect Pipings 34
Precautions When You Handle Electrical Equipment 41
Precautions When You Handle Fuel System Equipment 43
Precautions When You Handle Intake System Equipment 44
Practical Use of KOMTRAX 45
Disconnect and Connect Push-Pull Type Coupler 46
How to Disconnect and Connect Type 1 Push-Pull Type Coupler 46
How to Disconnect and Connect Type 2 Push-Pull Type Coupler 47
How to Disconnect and Connect Type 3 Push-Pull Type Coupler 48
Precautions for Disconnection and Connection of Connectors 50
How to Disconnect and Connect Deutsch Connector 54
How to Disconnect and Connect Slide Lock Type Connector 55
How to Disconnect and Connect Connector with Lock to Pull 57
How to Disconnect and Connect Connector with Lock to Push 58
How to Disconnect and Connect Connector with Housing to Rotate 60
How to Read the Codes for Electric Cable 61
Explanation of Terms for Maintenance Standard 65
Standard Tightening Torque Table 68
Conversion Table 75
Abbreviation List 80
01 Specifications 87
Table of Contents 88
Specifications 89
Specification Drawing 89
Specification Drawing: PC88MR-11 89
Working Range Drawings 90
Working Range Drawings: PC88MR-11 90
Specifications 91
Specification: PC88MR-11 91
Weight Table 95
Weight Table: PC88MR-11 95
Fuel, Coolant, Lubricants (KAL Specification) 97
How to Use Fuel, Coolant and Lubricants by Ambient Temperature 97
10 Structure and Function 99
Table of Contents 100
Boot-up System 103
Layout Drawing of Boot-up System 103
System Operating Lamp System 104
System Diagram of System Operating Lamp System (Machine with Gateway Function Controller) 104
Function of System Operating Lamp System (Machine with Gateway Function Controller) 104
Battery Disconnect Switch 106
Function of Battery Disconnect Switch 106
Engine System 107
Layout Drawing of Engine System 107
Engine Control System 109
System Diagram of Engine Control 109
Function of Engine Control System 110
Auto-Deceleration System 112
System Diagram of Auto-Deceleration System 112
Function of Auto-Deceleration System 112
Operation of Auto-Deceleration System 113
Engine Automatic Warm-up System 114
System Diagram of Engine Automatic Warm-up System 114
Function of Engine Automatic Warm-up System 115
Overheat Prevention System 116
Function of Overheat Prevention System 116
Turbocharger Protection System 117
Function of Turbocharger Protection System 117
Automatic Idle Stop System 118
System Diagram of Automatic Idle Stop System (Machine with Gateway Function Controller) 118
Function of Automatic Idle Stop System 118
Component Parts of Engine System 121
PTO 121
Turbocharger 122
EGR System 124
EGR Valve 127
EGR Cooler 129
High Efficiency Breather System 130
High Efficiency Breather 131
Exhaust Throttle Valve 133
KDOC 134
Cooling System 136
Layout Drawing of Cooling System 136
Specifications of Cooling System 137
Control System 138
Layout Drawing of Control System 138
Machine Monitor System 140
System Diagram of Machine Monitor System (Machine with Gateway Function Controller) 140
Function of Machine Monitor System 140
KOMTRAX System 142
System Diagram of KOMTRAX System 142
Function of KOMTRAX System 142
Component Parts of Control System 143
Machine Monitor 143
Gateway Function Controller 155
Communication Terminal 158
Pump Controller 160
Resistor for PC-EPC Valve 164
CAN Terminating Resistor 165
Engine Controller 166
Fuel Control Dial 173
Hydraulic System 174
Layout Drawing of Hydraulic System 174
CLSS 177
Structure of CLSS 177
Function of CLSS 178
Engine and Pump Combined Control System 180
Engine and Pump Combined Control System Diagram 180
Function of Engine and Pump Combined Control System 181
Component Parts of Hydraulic System 184
Hydraulic Tank 185
Main Pump 187
Control Valve 202
Work Equipment System 266
Layout Drawing of Work Equipment System 266
PPC Lock System 268
System Diagram of PPC Lock 268
Function of PPC Lock System 268
Work Equipment and Travel Automatic Lock System 269
System Diagram of Lock Lever Automatic Lock System 269
Function of Work Equipment and Travel Automatic Lock System 269
Operation of Lock Lever Automatic Lock System 270
Overload Caution System 271
Overload Caution System Diagram 271
Function of Overload Caution System 271
Attachment Oil Flow Adjuster System 273
Attachment Oil Flow Adjuster System Diagram 273
Function of Attachment Oil Flow Adjuster System 274
Component Parts of Work Equipment System 275
Work Equipment and Swing PPC Valve 275
1st-Line Attachment PPC Valve (with EPC Valve) 280
Attachment Oil Flow Adjuster EPC Valve 286
Blade PPC Valve 287
Boom Swing PPC Valve 289
Solenoid Valve 291
Boom Anti-drop Valve 294
Arm Anti-Drop Valve 299
Multi-Control Valve 304
Pilot Circuit Accumulator 305
Attachment Circuit Accumulator (For Low Pressure Circuit) 306
Swing System 307
Layout Drawing of Swing System 307
Swing Control System Diagram 309
Function of Swing Control System 309
Component Parts of Swing System 311
Swing Motor 311
Swing Machinery 320
Swing Circle 322
Travel System 324
Layout Drawing of Travel System 324
System Diagram of Travel Control System 326
Function of Travel Control System 327
Component Parts of Travel System 329
Travel Motor 329
Travel PPC Valve 338
Center Swivel Joint 342
Undercarriage and Frame 343
Layout Drawing of Undercarriage 343
Specifications of Undercarriage 343
Idler Cushion 345
Structure of Idler Cushion 345
Specifications of Idler Cushion 345
Work Equipment 346
Structure of Work Equipment 346
Function of Work Equipment 347
Work Equipment Clearance Adjustment Shim 348
Function of Work Equipment Clearance Adjustment Shim 348
Bucket Clearance Adjustment Shim 349
Function of Bucket Clearance Adjustment Shim 349
CAB Related Parts 350
ROPS CAB 350
Structure of ROPS CAB 350
Function of ROPS CAB 350
CAB Mount 351
Structure of CAB Mount 351
Function of CAB Mount 352
Remove Wiring Harness Out of Cab 353
20 Standard Value Table 355
Table of Contents 356
Standard Value Table for Engine 357
Standard Value Table for Engine: PC88MR-11 357
Standard Value Table for Machine 359
Standard Value Table for Machine: PC88MR-11 359
Machine Posture and Procedures to Measure Performance 371
30 Testing and Adjusting 377
Table of Contents 378
Precautions Before Work 381
Related Information on Testing and Adjusting 382
Tools for Testing and Adjusting 382
Sketch of Tools for Testing and Adjusting 387
Engine and Cooling System 389
Examine Engine Speed 389
How to Examine Engine Speed 389
Examine Exhaust Gas Color 393
How to Examine Exhaust Gas Color with the Handy Smoke Checker 393
How to Examine Exhaust Gas Color with Smoke Meter 394
Examine and Adjust Valve Clearance 396
How to Examine Valve Clearance 396
How to Adjust Valve Clearance 397
Examine Compression Pressure 398
How to Examine Compression Pressure 398
Examine Blowby Pressure 401
How to Examine Blowby Pressure 401
Examine Engine Oil Pressure 403
How to Examine Engine Oil Pressure 403
Visual Check Inside of EGR Valve 405
How to do the Visual Check Inside of EGR Valve 405
Clean Inside of EGR Valve 407
How to Clean Inside of EGR Valve 407
Examine Fuel Pressure 410
How to Examine Fuel Pressure 410
Examine Fuel Return Rate and Leakage 412
How to Examine Fuel Return Rate and Leakage 414
Bleed Air from Fuel System 417
How to Bleed Air from Fuel System 417
Examine Fuel Circuit for Leakage 419
How to Examine Fuel System for Leakage 419
Handle Cylinder Cut-out Mode Operation 421
Handle No-Injection Cranking Operation 422
Examine Fan Belt 423
How to Examine Fan Belt 423
Examine Automatic Tensioner 424
How to Examine Automatic Tensioner 424
Write Injector Compensation Value to Engine Controller 426
How to Write Injector Compensation Value 426
Power Train 432
Examine Swing Circle Bearing Clearance 432
How to Examine Swing Circle Bearing Clearance 432
Undercarriage and Frame 433
Examine and Adjust Track Tension 433
How to Examine Track Tension 433
How to Adjust Track Tension 433
Hydraulic System 435
Release Remained Pressure in Hydraulic Circuit 435
How to Release Remained Pressure from Hydraulic Tank 435
How to Release Remained Pressure in Hydraulic Cylinder Circuit 435
How to Release Remained Pressure from Swing Motor Circuit 438
How to Release Remained Pressure from Travel Motor Circuit 438
How to Release Remained Pressure from Swing Cylinder Circuit 439
How to Release Remained Pressure from Blade Cylinder 439
Examine and Adjust Oil Pressure in Work Equipment and Travel Circuits 440
How to Examine Oil Pressure in Work Equipment and Travel Circuits 440
How to Adjust Oil Pressure in Work Equipment and Travel Circuits 448
How to Adjust Work Equipment and Travel Relief Pressure 449
Examine and Adjust Swing and Blade Circuit Oil Pressure 450
How to Examine Swing and Blade Relief Pressure 450
How to Adjust Swing Relief Pressure 452
How to Adjust Blade LOWER Relief Pressure 452
How to Adjust Blade RAISE Relief Pressure 453
Examine Oil Pressure of Control Circuit 454
How to Examine Oil Pressure in Control Circuit 454
Examine and adjust oil pressure in pump PC control circuit 456
How to Examine PC Valve Outlet Pressure (Servo Piston Inlet Pressure) 456
How to Examine Source Pressure of PC-EPC Valve 458
How to Examine PC-EPC Valve Output Pressure 459
How to Adjust Oil Pressure in Pump PC Control Circuit 460
Examine and Adjust Oil Pressure in Pump LS Control Circuit 462
How to Examine LS Differential Pressure with Machine Monitor 462
How to Examine LS Differential Pressure by Testing Tool 464
How to Adjust LS Valve 467
Examine Outlet Pressure of Solenoid Valve 468
How to Examine Outlet Pressure of Solenoid Valve 468
Operating Condition of Solenoid Valve 470
Examine PPC Valve Outlet Pressure 471
How to Examine PPC Valve Outlet Pressure 471
Examine and Adjust Travel Deviation 474
How to Examine Travel Deviation 474
How to Adjust Travel Deviation 475
Examine Parts Which Cause Hydraulic Drift of Work Equipment 477
How to Examine Parts Which Cause Hydraulic Drift of Boom Cylinder and Bucket Cylinder 477
How to Examine the Parts Which Cause Hydraulic Drift of Arm Cylinder 477
How to Examine Parts that Cause Hydraulic Drift of PPC Valve 478
Examine Oil Leakage 479
How to Examine Oil Leakage from Boom Cylinder 479
How to Examine Oil Leakage from Arm Cylinder 480
How to Examine Oil Leakage from Bucket Cylinder 480
How to Examine Oil Leakage from Boom Swing Cylinder 481
How to Examine Oil Leakage from Blade Cylinder 482
How to Examine Oil Leakage from Swing Motor 483
How to Examine Oil Leakage from Travel Motor 484
Bleed Air from Hydraulic System 486
How to Bleed Air from Hydraulic System 487
CAB Related Parts 492
How to Adjust Mirrors 492
Adjust Left Front Mirror (A) 492
How to Adjust Left Front Mirror (B) 493
How to Examine and Adjust Slide Door 494
How to Examine and Adjust Slide Door When It is Closed and Locked 494
How to Examine and Adjust Slide Door When It is Open and Locked 506
Electrical System 519
Set and Operate Machine Monitor 519
Operator Mode 522
Function to Show Technician Identification Status Screen 522
Function to Show Operator Identification Input Screen 522
Examine Function by LCD (Liquid Crystal Display) 523
Examine Function of Service Meter 523
Usage Limitation and Maintenance Password Change Function 524
Service Mode 527
How to Operate Service Mode 527
How to See Pre-defined Monitoring Information 529
How to Examine Monitoring Information 533
Abnormality Record Menu 542
How to See Maintenance Record 547
Maintenance Mode Setting 548
How to Set Phone Number Entry 552
Default Setting Menu 554
Testing Menu 564
Adjustment Menu 567
No-Injection Cranking Operation 581
KOMTRAX Settings Menu 584
How to Show Service Message 586
How to Start Up KOMTRAX System 588
Adjust Rearview Camera Angle 595
How to Adjust Rearview Camera Angle 595
Adjust Rightview Camera Angle 598
How to Adjust Right View Camera Angle 598
Set Region of Bluetooth(R) Compatible Radio 601
How to Set Region of Bluetooth(R) Compatible Radio 601
Handle Voltage Circuit of Engine Controller 603
Handle Battery Disconnect Switch 604
Examine Diodes 605
How to Examine Diodes by Digital Tester 605
How to Examine Diodes by Analog Tester 605
Pm Clinic 606
Pm Clinic Service 606
Pm Clinic Check Sheet: PC88MR-11 608
40 Troubleshooting 617
Table of Contents 618
Precautions Before Work 625
Related Information to Troubleshooting 626
General Troubleshooting Points 626
Sequence of Events in Troubleshooting 627
Checks Before Troubleshooting 629
Inspection Procedure Before Troubleshooting 631
Walk-Around Check 631
Test in Accordance with Testing Procedure 633
Examine Fuel Level and Type 633
Examine Fuel Prefilter 634
Examine Water Separator, Drain Water and Sediment 634
How to Replace Fuel Prefilter Cartridge 635
Examine Fuel Main Filter 637
Examine Engine Oil Level (Oil Quantity in Oil Pan) 638
Examine Oil Level in PTO Gear Case 639
Examine Coolant Level (Expansion Tank) 641
Examine Air Cleaner Clogging 642
Clean Outer Element 642
Replace Element 644
Examine Hydraulic Oil Level 645
Examine Hydraulic Oil Strainer 647
Examine Hydraulic Oil Filter 649
Examine Oil Level in Swing Machinery Case 650
Examine Oil Level in Final Drive Case 651
Bleed Air from Fuel System 652
Bleed Air from Hydraulic System 652
How to Examine Electric Equipment 652
Preparation for Troubleshooting of Electrical System 657
Preparation for Troubleshooting of Machine Monitor 657
Preparation for Troubleshooting of Engine Controller 659
Preparation for Troubleshooting of Pump Controller 660
Preparation for Troubleshooting of Gateway Function Controller 660
How to Disconnect and Connect Connector with a Special Lock 661
Procedure for Troubleshooting 665
Symptom and Troubleshooting Numbers 668
Information Shown in Troubleshooting Table 673
How to Diagnose Open Circuit of Hydraulic Pressure Sensor System Wiring Harness 675
Connectors List 678
Connector Layout 684
Connector Contact Connection Table 690
T-Branch Box and T-Branch Adapter Table 737
Fuse Location Table 743
Failure Code Table 746
Troubleshooting by Failure Code (Display of Code) 756
Failure Code [6AZ0ZG] 756
Failure Code [879AKA] 758
Failure Code [879AKB] 759
Failure Code [879BKA] 760
Failure Code [879BKB] 762
Failure Code [879CKA] 764
Failure Code [879CKB] 765
Failure Code [879DKZ] 766
Failure Code [879EMC] 768
Failure Code [879FMC] 769
Failure Code [879GKX] 770
Failure Code [989L00] 772
Failure Code [989M00] 773
Failure Code [989N00] 774
Failure Code [A900FR] 775
Failure Code [A900N6] 776
Failure Code [A900NY] 777
Failure Code [AA10NX] 778
Failure Code [AB00KE] 780
Failure Code [B@BAZG] 782
Failure Code [B@BCNS] 783
Failure Code [B@BCQA] 784
Failure Code [B@BCZK] 786
Failure Code [B@HANS] 788
Failure Code [CA115] 790
Failure Code [CA122] 791
Failure Code [CA123] 793
Failure Code [CA131] 795
Failure Code [CA132] 797
Failure Code [CA144] 799
Failure Code [CA145] 801
Failure Code [CA153] 803
Failure Code [CA154] 806
Failure Code [CA187] 809
Failure Code [CA221] 811
Failure Code [CA222] 813
Failure Code [CA227] 815
Failure Code [CA234] 816
Failure Code [CA238] 817
Failure Code [CA239] 819
Failure Code [CA271] 821
Failure Code [CA272] 823
Failure Code [CA322] 825
Failure Code [CA324] 828
Failure Code [CA331] 831
Failure Code [CA343] 834
Failure Code [CA351] 835
Failure Code [CA352] 836
Failure Code [CA356] 838
Failure Code [CA357] 840
Failure Code [CA386] 843
Failure Code [CA435] 844
Failure Code [CA441] 846
Failure Code [CA442] 848
Failure Code [CA449] 849
Failure Code [CA451] 850
Failure Code [CA452] 852
Failure Code [CA515] 854
Failure Code [CA516] 856
Failure Code [CA553] 858
Failure Code [CA559] 859
Failure Code [CA689] 863
Failure Code [CA691] 865
Failure Code [CA692] 867
Failure Code [CA697] 869
Failure Code [CA698] 870
Failure Code [CA731] 871
Failure Code [CA778] 872
Failure Code [CA1117] 875
Failure Code [CA1896] 876
Failure Code [CA1961] 880
Failure Code [CA2185] 881
Failure Code [CA2186] 883
Failure Code [CA2249] 885
Failure Code [CA2272] 886
Failure Code [CA2311] 889
Failure Code [CA2349] 890
Failure Code [CA2353] 892
Failure Code [CA2357] 894
Failure Code [CA2765] 895
Failure Code [CA2973] 896
Failure Code [CA3419] 897
Failure Code [CA3421] 899
Failure Code [CA3724] 901
Failure Code [CA4264] 902
Failure Code [CA4952] 904
Failure Code [D110KB] 906
Failure Code [D19JKZ] 908
Failure Code [D811MC] 910
Failure Code [D862KA] 911
Failure Code [D8ALKA] 912
Failure Code [D8ALKB] 914
Failure Code [D8AQKR] 916
Failure Code [D8G1KT] 921
Failure Code [D8G6KT] 922
Failure Code [DA20MC] 923
Failure Code [DA22KK] 924
Failure Code [DA25KP] 927
Failure Code [DA26KP] 930
Failure Code [DA29KQ] 932
Failure Code [DA2LKA] 934
Failure Code [DA2LKB] 936
Failure Code [DA2QKR] 938
Failure Code [DA2RKR] 944
Failure Code [DAF0MB] 949
Failure Code [DAF0MC] 950
Failure Code [DAF8KB] 951
Failure Code [DAF9KQ] 953
Failure Code [DAFGMC] 954
Failure Code [DAFLKA] 955
Failure Code [DAFLKB] 957
Failure Code [DAFQKR] 959
Failure Code [DAZ9KQ] 965
Failure Code [DAZQKR] 966
Failure Code [DB2QKR] 970
Failure Code [DB2RKR] 976
Failure Code [DDNRKA] 981
Failure Code [DDNRKY] 984
Failure Code [DDNS00] 986
Failure Code [DFB1KZ] 988
Failure Code [DFB2KZ] 990
Failure Code [DFB3L8] 992
Failure Code [DFB4L8] 994
Failure Code [DFB5KZ] 996
Failure Code [DFB6KZ] 998
Failure Code [DGH2KA]1000
Failure Code [DGH2KB]1002
Failure Code [DHA4KA]1003
Failure Code [DHPAMA]1005
Failure Code [DHS3MA]1007
Failure Code [DHS4MA]1009
Failure Code [DHS5MA]1011
Failure Code [DHS8MA]1013
Failure Code [DHS9MA]1015
Failure Code [DHSAMA]1017
Failure Code [DHSBMA]1019
Failure Code [DHSCMA]1021
Failure Code [DHSDMA]1023
Failure Code [DHSPMA]1025
Failure Code [DHSQMA]1027
Failure Code [DHX1MA]1029
Failure Code [DKULKA]1031
Failure Code [DKULKB]1033
Failure Code [DKULKY]1035
Failure Code [DLM5KA]1037
Failure Code [DLM5MB]1039
Failure Code [DR21KX]1041
Failure Code [DV20KB]1043
Failure Code [DW43KA]1045
Failure Code [DW43KB]1047
Failure Code [DW43KY]1049
Failure Code [DW45KA]1050
Failure Code [DW45KB]1053
Failure Code [DW45KY]1056
Failure Code [DW4CKY]1058
Failure Code [DWA2KA]1060
Failure Code [DWA2KB]1062
Failure Code [DWA2KY]1064
Failure Code [DWJ0KA]1065
Failure Code [DWJ0KB]1067
Failure Code [DWJ0KY]1069
Failure Code [DWN5KA]1070
Failure Code [DWN5KB]1072
Failure Code [DWN5KY]1074
Failure Code [DXA8KA]1076
Failure Code [DXA8KB]1078
Failure Code [DXE7KA]1080
Failure Code [DXE7KB]1082
Failure Code [DXE7KY]1084
Failure Code [DXE8KA]1085
Failure Code [DXE8KB]1087
Failure Code [DXE8KY]1089
Failure Code [DXE9KA]1090
Failure Code [DXE9KB]1092
Failure Code [DXE9KY]1094
Failure Code [DXEAKA]1095
Failure Code [DXEAKB]1097
Failure Code [DXEAKY]1099
Failure Code [DY20KA]1100
Failure Code [DY20MA]1102
Failure Code [DY2CKB]1104
Failure Code [DY2DKB]1106
Failure Code [DY2EKB]1108
Failure code [F311KA]1110
Failure code [F311KB]1112
Failure code [F312KA]1114
Failure code [F312KB]1116
Failure Code [F313KA]1118
Failure Code [F313KB]1119
Failure code [F314KA]1120
Failure code [F314KB]1122
Failure Code [F315KB]1124
Failure Code [F315KY]1126
Failure code [F316KB]1128
Failure code [F316KY]1130
Failure Code [F318KB]1132
Failure Code [F318KY]1133
Failure code [F31AKB]1134
Failure code [F31AKY]1136
Failure Code [F31BKB]1138
Failure Code [F31BKY]1140
Failure Code [F31CKB]1142
Failure Code [F31CKY]1144
Failure Code [F31DKB]1146
Failure Code [F31DKY]1148
Failure Code [F31EKB]1150
Failure Code [F31EKY]1152
Failure Code [FS10ZE]1154
Troubleshooting of Electrical System (E-Mode)1155
Engine Does Not Start (Engine Does Not Crank)1155
Manual Preheating System Does Not Operate1161
While Preheating is in Operation, Preheating Monitor Does Not Come On1164
When Starting Switch is Turned to ON Position, Machine Monitor Shows Nothing1166
Engine Coolant Temperature Monitor Comes On in White While Engine is in Operation1169
Hydraulic Oil Temperature Monitor Comes On in White While Engine is in Operation1170
Charge Level Monitor Comes On in Red While Engine is in Operation1171
Fuel Level Monitor Comes On in Red While Engine is in Operation1172
Engine Coolant Temperature Monitor Comes On in Red While Engine is in Operation1173
Engine Oil Pressure Monitor Comes On in Red While Engine is in Operation1174
Hydraulic Oil Temperature Monitor Comes On in Red While Engine is in Operation1175
Fuel Gauge Does Not Move from Minimum or Maximum1176
Display of Fuel Gauge is Different from Actual Fuel Level1178
Coolant Temperature Gauge Display Does Not Move from Minimum or Maximum1179
Display of Coolant Temperature Gauge is Different from Actual Coolant Temperature1180
Hydraulic Oil Temperature Gauge Does Not Move from Minimum or Maximum1181
Display of Hydraulic Oil Temperature Gauge is Different from Actual Oil Temperature1183
Some Areas of Machine Monitor Screen are Not Shown1184
Function Switch Does Not Operate1185
Automatic Warm-up System Does Not Operate (in Cold Weather)1186
Auto-Deceleration Monitor Does Not Come On or Go Out While Auto-Deceleration Switch is Operated1187
Auto-Decelerator is Not Operated or Canceled with Lever1188
Work Mode Selector Screen is Not Shown While Work Mode Switch is Operated1189
When Working Mode is Changed, Setting of Engine and Hydraulic Pump is Not Changed1190
Travel Speed Monitor Does Not Change While Travel Speed Switch is Operated1191
Travel Speed Does Not Change Even When You Change Travel Speed1192
Alarm Buzzer Does Not Stop1193
Service Meter is Not Shown While Starting Switch is in OFF Position1194
Service Mode Cannot be Selected1195
All Work Equipment, Swing, Travel Do Not Operate1196
All Work Equipment, Swing, Travel Cannot be Locked1199
Machine Does Not Swing While Swing Parking Brake Release Switch is Set to Release Position1201
While Swing Parking Brake Release Switch is Turned on, Swing Brake is Not Operated1203
Work Equipment Does Not Operate While Lock Lever Automatic Release Switch is in Release Position1205
Travel Alarm Does Not Operate During Travel1207
Travel Alarm Does Not Stop When Machine Stops1209
Horn Does Not Sound1210
Horn Does Not Stop1212
Wiper Monitor Does Not Come On or Go Out While Wiper Switch is Operated1213
Windshield Wiper Does Not Operate When Wiper Switch is Operated1214
When Window Washer Switch is Operated, Window Washer Does Not Operate1216
“Boom Raise” is Not Shown Correctly with Monitoring Function1217
“Boom Lower” is Not Shown Correctly with Monitoring Function1218
“Arm OUT” is Not Shown Correctly with Monitoring Function1219
“Arm IN” is Not Shown Correctly with Monitoring Function1220
Bucket DUMP is Not Shown Correctly with Monitoring Function1221
Bucket CURL is Not Shown Correctly with Monitoring Function1222
Boom Swing Left is Not Shown Correctly with Monitoring Function1223
Boom Swing Right is Not Shown Correctly with Monitoring Function1224
Swing is Not Shown Correctly with Monitoring Function1225
Travel is Not Shown Correctly with Monitoring Function1226
Blade RAISE is Not Shown Correctly with Monitoring Function1227
Blade LOWER is Not Shown Correctly with Monitoring Function1229
KOMTRAX System Does Not Operate Correctly1231
Troubleshooting for Hydraulic and Mechanical Systems (H Mode)1232
Information Shown in Troubleshooting Table (H-Mode)1232
Failure Mode and Cause Table1233
All Work Equipment, Swing and Travel Do Not Work1245
All Work Equipment, Swing, and Travel Lack Speed or Power1246
Fine Control Performance or Response is Unsatisfactory1248
Unusual Noise is Heard from Around Hydraulic Pump1249
Engine Speed Drops Largely or Engine Stops1250
Boom Speed or Power is Low1252
Arm Speed or Power is Low1256
Bucket Speed or Power is Low1259
Blade Speed or Power is Low1262
Boom Swing Speed or Power is Low1264
Work Equipment Does Not Move in Single Operation1267
Hydraulic Drift of Boom is Large1268
Hydraulic Drift of Arm is Large1269
Hydraulic Drift of Bucket is Large1270
Hydraulic Drift of Blade is Large1271
When Single Work Equipment is Released Hydraulically, Other Work Equipment Moves1272
Time Lag of Work Equipment is Large1273
Attachment Circuit Cannot be Changed1275
Oil Flow in Attachment Circuit Cannot be Changed1276
In Mixed Operation of Work Equipment, Work Equipment with Heavier Load Moves Slower1277
In Mixed Operation of Work Equipment or Swing and Travel, Travel Speed Falls Largely1278
In Mixed Operation of Swing and Boom RAISE, Boom RAISE Speed is Low1280
Machine Does Not Travel Straight1281
Machine is Not Steered Well or Steering Power is Low1284
Travel Speed is Low1287
One of Tracks Does Not Run1290
Travel Speed Does Not Change, or Travel Speed is Too Slow or Fast1292
Upper Structure Does Not Swing in Two Directions of Right and Left1293
Machine Swings Only in One Direction1295
Swing Acceleration or Swing Speed is Low in Two Directions of Right and Left1296
Swing Acceleration or Swing Speed is Low in Only One Direction1297
Upper Structure Overruns Too Much When It Stops Swing Operation (Right and Left)1298
Upper Structure Overruns Too Much When It Stops Swing Operation (Only One Direction)1299
Shock is Large When Upper Structure Stops Swing Operation1300
Large Unusual Noise is Made When Upper Structure Stops Swing Operation1301
Swing Drift on a Slope is Large (While Swing Parking Brake is Applied)1302
Swing Drift on a Slope is Large (While Swing Parking Brake is Released)1303
Fan Speed is Abnormal (Too High or Low, or Does Not Rotate)1304
Unusual Noise is Heard from Around Fan1305
Troubleshooting of Engine (S-Mode)1306
Information Shown in Troubleshooting Table (S-Mode)1306
Engine Does Not Crank When Starting Switch is Turned to Start Position1307
Engine Cranks but No Exhaust Smoke Comes Out1308
Fuel is Sprayed but Engine Does Not Start (Misfiring: Engine Cranks but Does Not Start)1309
Engine Startability is Unsatisfactory1310
Engine Does Not Pick Up Smoothly1312
Engine Stops During Operation1314
Engine Does Not Rotate Smoothly1316
Engine Lacks Output (or Lacks Power)1317
Exhaust Smoke is Black1319
Engine Oil Consumption is Excessive1321
Engine Oil Becomes Dirty Quickly1322
Fuel Consumption is Excessive1323
Oil is in Coolant (or Coolant Spurts Back or Coolant Level Goes Down)1324
Engine Oil Pressure Drops1325
Fuel Mixes Into Engine Oil1326
Water Mixes Into Engine Oil (Milky)1327
Coolant Temperature Increases Too High (Overheat)1328
Unusual Noise is Heard1329
Vibration is Excessive1330
Air Cannot be Bled from Fuel Circuit1331
50 Disassembly and Assembly1333
Table of Contents1334
Precautions Before Work1338
Related Information on Disassembly and Assembly1339
How to Read This Manual1339
Coating Materials List1340
Special Tool List1345
Sketches of Special Tools1362
Prepare1365
Drain and Add Coolant1365
How to Drain Coolant1366
How to Add Coolant1367
Drain and Add Hydraulic Oil1368
How to Drain Hydraulic Oil1369
How to Add Hydraulic Oil1370
Drain and Add Fuel1372
How to Drain Fuel1373
How to Add Fuel1373
Collect and Refill Refrigerant1375
How to Collect Refrigerant1375
How to Refill Refrigerant1376
Engine and Cooling System1377
Remove and Install Supply Pump Assembly1377
How to Remove Supply Pump Assembly1378
How to Install Supply Pump Assembly1388
Remove and Install Injector Assembly1397
How to Remove Injector Assembly1398
How to Install Injector Assembly1402
Remove and Install Cylinder Head Assembly1409
How to Remove Cylinder Head Assembly1411
How to Install Cylinder Head Assembly1441
Remove and Install EGR Valve Assembly1482
How to Remove EGR Valve Assembly1483
How to Install EGR Valve Assembly1484
Remove and Install EGR Cooler Assembly1487
How to Remove EGR Cooler Assembly1488
How to Install EGR Cooler Assembly1494
Remove and Install Starter Assembly1500
How to Remove Starting Motor Assembly1501
How to Install Starting Motor Assembly1503
Remove and Install Fan Belt1506
How to Remove Fan Belt1507
How to Install Fan Belt1509
Remove and Install Automatic Tensioner1511
How to Remove Auto-Tensioner1511
How to Install Auto-Tensioner1512
Remove and Install Expansion Tank Assembly1513
How to Remove Expansion Tank Assembly1514
How to Install Expansion Tank Assembly1518
Remove and Install Radiator Assembly1523
How to Remove Radiator Assembly1524
How to Install Radiator Assembly1527
Remove and Install Hydraulic Oil Cooler Assembly1530
How to Remove Hydraulic Oil Cooler Assembly1531
How to Install Hydraulic Oil Cooler Assembly1540
Remove and Install Aftercooler Assembly1549
How to Remove Aftercooler Assembly1550
How to Install Aftercooler Assembly1552
Remove and Install Engine and Main Pump Assembly1555
How to Remove Engine and Main Pump Assembly1557
How to Install Engine and Main Pump Assembly1580
Remove and Install Engine Front Oil Seal1606
How to Remove Engine Front Oil Seal1607
How to Install Engine Front Oil Seal1608
Remove and Install Engine Rear Oil Seal1611
How to Remove Engine Rear Oil Seal1612
How to Install Engine Rear Oil Seal1614
Remove and Install Fuel Cooler Assembly1618
How to Remove Fuel Cooler Assembly1619
How to Install Fuel Cooler Assembly1619
Remove and Install Engine Hood Assembly1621
How to Remove Engine Hood Assembly1621
How to Install Engine Hood Assembly1624
Remove and Install KDOC Assembly1627
How to Remove KDOC Assembly1628
How to Install KDOC Assembly1632
Remove and Install Fuel Tank Assembly1637
How to Remove Fuel Tank Assembly1638
How to Install Fuel Tank Assembly1644
Remove and Install Air Cleaner Assembly1650
How to Remove Air Cleaner Assembly1651
How to Install Air Cleaner Assembly1652
Remove and Install Air Conditioner Compressor Assembly1655
How to Remove Air Conditioner Compressor Assembly1656
How to Install Air Conditioner Compressor Assembly1658
Remove and Install Air Conditioner Condenser Assembly1660
How to Remove Air Conditioner Condenser Assembly1661
How to Install Air Conditioner Condenser Assembly1663
Power Train1665
Remove and Install Travel Motor and Final Drive Assembly1665
How to Remove Travel Motor and Final Drive Assembly1666
How to Install Travel Motor and Final Drive Assembly1669
Disassemble and Assemble Travel Motor and Final Drive Assembly1673
How to Disassemble Travel Motor and Final Drive Assembly1682
How to Assemble Travel Motor and Final Drive Assembly1702
Remove and Install Swing Motor and Swing Machinery Assembly1721
How to Remove Swing Motor and Swing Machinery Assembly1722
How to Install Swing Motor and Swing Machinery Assembly1727
Disassemble and Assemble Swing Machinery Assembly1732
How to Disassemble Swing Machinery Assembly1733
How to Assemble Swing Machinery Assembly1738
Remove and Install Swing Circle Assembly1744
How to Remove Swing Circle Assembly1744
How to Install Swing Circle Assembly1745
Undercarriage and Frame1746
Separate and Connect Track Assembly1746
How to Separate Track Assembly1747
How to Install Track Assembly1747
Remove and Install Sprocket1749
How to Remove Sprocket1749
How to Install Sprocket1750
Remove and Install Idler and Idler Cushion Assembly1751
How to Remove Idler and Idler Cushion Assembly1751
How to Install Idler and Idler Cushion Assembly1752
Disassemble and Assemble Idler Assembly1753
How to Disassemble Idler Assembly1753
How to Assemble Idler Assembly1754
Disassemble and Assemble Idler Cushion Assembly1757
How to Disassemble Idler Cushion Assembly1757
How to Assemble Idler Cushion Assembly1758
Disassemble and Assemble Track Roller Assembly1760
How to Disassemble Track Roller Assembly1760
How to Assemble Track Roller Assembly1762
Remove and Install Revolving Frame Assembly1765
How to Remove Revolving Frame Assembly1766
How to Install Revolving Frame Assembly1772
Remove and Install Counterweight Assembly1778
How to Remove Counterweight Assembly1779
How to Install Counterweight Assembly1783
Hydraulic System1788
Remove and Install Center Swivel Joint Assembly1788
How to Remove Center Swivel Joint Assembly1789
How to Install Center Swivel Joint Assembly1794
Disassemble and Assemble Center Swivel Joint Assembly1800
How to Disassemble Center Swivel Joint Assembly1800
How to Assemble Center Swivel Joint Assembly1801
Remove and Install Hydraulic Tank Assembly1802
How to Remove Hydraulic Tank Assembly1803
How to Install Hydraulic Tank Assembly1807
Remove and Install Main Pump Assembly1811
How to Remove Main Pump Assembly1812
How to Install Main Pump Assembly1822
Remove and Install Control Valve Assembly1832
How to Remove Control Valve Assembly1834
How to Install Control Valve Assembly1857
Disassemble and Assemble Control Valve Assembly1880
How to Assemble Control Valve Assembly1880
How to Replace Pressure Reducing Valve Cartridge Assembly1882
Disassemble and Assemble Work Equipment PPC Valve Assembly1885
How to Disassemble Work Equipment PPC Valve Assembly1885
How to Assemble Work Equipment PPC Valve Assembly1886
Disassemble and Assemble Travel PPC Valve Assembly1888
How to Disassemble Travel PPC Valve Assembly1888
How to Assemble Travel PPC Valve Assembly1889
Work Equipment1891
Remove and Install Blade Assembly1891
How to Remove Blade Assembly1892
How to Install Blade Assembly1894
Remove and Install Work Equipment Assembly1897
How to Remove Work Equipment Assembly1899
How to Install Work Equipment Assembly1903
Remove and Install Boom Swing Bracket1908
How to Remove Boom Swing Bracket1909
How to Install Boom Swing Bracket1912
Remove and Install Boom Anti-drop Valve Assembly1916
How to Remove Boom Anti-drop Valve Assembly1917
How to Install Boom Anti-drop Valve Assembly1920
Remove and Install Arm Anti-Drop Valve Assembly1923
How to Remove Arm Anti-Drop Valve Assembly1924
How to Install Arm Anti-Drop Valve Assembly1927
Disassemble and Assemble Anti-Drop Valve Assembly1929
How to Disassemble Anti-Drop Valve Assembly1929
How to Assemble Anti-Drop Valve Assembly1929
Disassemble and Assemble Boom Cylinder Assembly1930
How to Disassemble Boom Cylinder Assembly1930
How to Assemble Boom Cylinder Assembly1932
Disassemble and Assemble Arm Cylinder Assembly1935
How to Disassemble Arm Cylinder Assembly1935
How to Assemble Arm Cylinder Assembly1937
Disassemble and Assemble Bucket Cylinder Assembly1941
How to Disassemble Bucket Cylinder Assembly1941
How to Assemble Bucket Cylinder Assembly1943
Disassemble and Assemble Blade Cylinder Assembly1946
How to Disassemble Blade Cylinder Assembly1946
How to Assemble Blade Cylinder Assembly1948
Disassemble and Assemble Swing Cylinder Assembly1951
How to Disassemble Swing Cylinder Assembly1951
How to Assemble Swing Cylinder Assembly1953
CAB Related Parts1957
Remove and Install Operator Cab Assembly1957
How to Remove Operator Cab Assembly1958
How to Install Operator Cab Assembly1975
Remove and Install Slide Door1991
How to Remove Slide Door1991
How to Install Slide Door1991
Remove and Install Operator Cab Glass (Adhered Glass)1993
How to Remove Operator Cab Glass (Adhered Glass)1994
How to Install Operator Cab Glass (Adhered Glass)1995
Remove and Install Front Window Assembly2004
How to Remove Front Window Assembly2004
How to Install Front Window Assembly2006
Remove and Install Floor Frame Assembly2008
How to Remove Floor Frame Assembly2009
How to Install Floor Frame Assembly2018
Remove and Install Air Conditioner Unit Assembly2028
How to Remove Air Conditioner Unit Assembly2029
How to Install Air Conditioner Unit Assembly2043
Remove and Install Operator Seat2056
How to Remove Operator Seat2057
How to Install Operator Seat2058
How to Remove and Install Seat Belt2061
How to Remove Seat Belt2062
How to Install Seatbelt2062
Remove and Install Front Wiper Assembly2063
How to Remove Front Wiper Assembly2064
How to Install Front Wiper Assembly2070
Electrical System2077
Remove and Install Engine Controller Assembly2077
How to Remove Engine Controller Assembly2078
How to Install Engine Controller Assembly2080
Remove and Install Pump Controller Assembly2083
How to Remove Pump Controller Assembly2084
How to Install Pump Controller Assembly2086
Remove and Install Machine Monitor Assembly2088
How to Remove Machine Monitor Assembly2089
How to Install Machine Monitor Assembly2095
Remove and Install Mass Air Flow and Temperature Sensor2100
How to Remove Mass Air Flow and Temperature Sensor2101
How to Install Mass Air Flow and Temperature Sensor2102
Remove and Install Gateway Function Controller2103
How to Remove Gateway Function Controller2104
How to Install Gateway Function Controller2106
60 Maintenance Standard2109
Table of Contents2110
Engine and Cooling System2111
Maintenance Standard for Engine Mount2111
Maintenance Standard for PTO2112
Maintenance Standard for Cooling System2113
Power Train2114
Maintenance Standard for Swing Circle2114
Maintenance Standard for Swing Machinery2116
Maintenance Standard for Sprocket2118
Undercarriage and Frame2119
Maintenance Standard for Track Frame and Idler Cushion2119
Maintenance Standard for Idler2121
Maintenance Standard for Track Roller2123
Maintenance Standard for Carrier Roller2124
Maintenance Standard for Track Shoes2125
Maintenance Standard for Triple Shoes2128
Maintenance Standard for Rubber Shoes2129
Hydraulic System2130
Maintenance Standard for Hydraulic Tank2130
Maintenance Standard for Main Pump2131
Maintenance Standard for Main Pump Servo Valve2133
Maintenance Standard for PC-EPC Valve2134
Maintenance Standard for Swing Motor2135
Maintenance Standard for Travel Motor2137
Maintenance Standard for Control Valve2138
Maintenance Standard for Boom Anti-Drop Valve2149
Maintenance Standard for Arm Anti-Drop Valve2151
Maintenance Standard for Work Equipment and Swing PPC Valve2153
Maintenance Standard for Blade PPC Valve2156
Maintenance Standard for Boom Swing PPC Valve2158
Maintenance Standard for Travel PPC Valve2160
Maintenance Standard for 1st-Line Attachment PPC Valve (with EPC Valve)2163
Maintenance Standard for EPC Valve of 1st-Line Attachment PPC Valve2164
Maintenance Standard for Solenoid Valve2166
Maintenance Standard for Attachment Oil Flow Adjuster EPC Valve2167
Maintenance Standard for Attachment Circuit Accumulator (For Low Pressure Circuit)2168
Maintenance Standard for Center Swivel Joint2169
Work Equipment2170
Maintenance Standard for Work Equipment Linkage2170
Dimensions of Arm2176
Dimensions of Bucket2178
Maintenance Standard for Boom Cylinder2180
Maintenance Standard for Arm Cylinder2181
Maintenance Standard for Bucket Cylinder2182
Maintenance Standard for Boom Swing Cylinder2183
Maintenance Standard for Blade Cylinder2184
80 Appendix2185
Table of Contents2186
Precautions Before Work2188
Air Conditioner System2189
Precautions for Refrigerant2189
Air Conditioner Component2190
Specifications of Air Conditioner2192
Structure and Function of Refrigeration Cycle2193
Outline of Refrigeration Cycle2194
Component Parts of Air Conditioner System2196
Air Conditioner Unit2196
Configuration Diagram of Air Conditioner Unit2196
Function of Air Conditioner Unit2198
Component Parts of Air Conditioner Unit2199
Function of Evaporator as Air Conditioner Unit Component2200
Function of Heater Core as Air Conditioner Unit Component2200
Function of Evaporator Temperature Sensor as Air Conditioner Unit Component2200
Function of Servo Motor as Air Conditioner Unit Component2201
Structure of Expansion Valve as Air Conditioner Unit Component2202
Function of Expansion Valve as Air Conditioner Unit Component2202
Operate Expansion Valve as Air Conditioner Unit Component2202
Function of Dual Pressure Switch2203
Air Conditioner Controller2204
Structure of Air Conditioner Controller2204
Compressor2205
Structure of Compressor2205
Specifications of Compressor2205
Function of Compressor2205
Condenser2206
Structure of Condenser2206
Specifications of Condenser2206
Function of Condenser2206
Receiver Drier2207
Structure of Receiver Dryer2207
Specifications of Receiver Dryer2207
Function of Receiver Dryer2207
Air Conditioner Related Sensors2208
Structure of Sunlight Sensor2208
Function of Sunlight Sensor2208
Structure of Outside Temperature Sensor2208
Function of Outside Air Temperature Sensor2208
Explanation of Procedure for Test of and Troubleshooting of Air Conditioner2210
Circuit Diagram and Configuration of Connector Pins of Air Conditioner2212
System Diagram of Air Conditioner2214
Input and Output Signals of Air Conditioner Controller2215
Function of Air Conditioner Controller2216
Locations of Air Conditioner Parts and Layout of Connectors2217
Examine Air Leakage (Duct)2223
How to Examine Air Leakage (Duct)2223
Examine Air Conditioner with Self-Diagnosis Function2224
Open the Electrical System Abnormality Record Screen in Service Mode of Machine Monitor2225
Examine Vent (Mode) Changeover2226
How to Examine Vent (Mode) Changeover2226
Examine Fresh/Recirc Air Changeover2227
How to Examine Fresh/Recirc Air Changeover2227
Examine Sunlight Sensor2228
How to Examine Sunlight Sensor2228
Examine Refrigerant (Dual) Pressure Switch2229
How to Examine Refrigerant (Dual) Pressure Switch2229
Examine Relay2231
How to Examine Relay2231
Air Conditioner Troubleshooting Chart 12232
Air Conditioner Troubleshooting Chart 22233
Information Shown in Troubleshooting Table2236
Failure Code [879AKA]2237
Failure Code [879AKB]2238
Failure Code [879BKA]2239
Failure Code [879BKB]2241
Failure Code [879CKA]2243
Failure Code [879CKB]2244
Failure Code [879DKZ]2245
Failure Code [879EMC]2247
Failure Code [879FMC]2248
Failure Code [879GKX]2249
Troubleshooting for Power Supply System (Air Conditioner Does Not Operate)2251
Troubleshooting for Compressor and Refrigerant System (Air is Not Cooled)2253
Troubleshooting for Blower Motor System (No Air Comes Out or Air Flow is Abnormal)2256
Troubleshooting for Fresh/Recirc Air Changeover2258
Troubleshooting by Gauge Pressure2260
Connect Service Tool2263
How to Connect Service Tool2263
Precautions for Disconnection and Connection of Air Conditioner Piping2265
Handle Compressor Oil2267
90 Circuit Diagrams2269
Table of Contents2270
How to Read the Codes for Electric Cable2271
Hydraulic Circuit Diagram2275
Symbols Used in Hydraulic Circuit Diagram2275
Hydraulic Circuit Diagram (1/2)2279
Hydraulic Circuit Diagram (2/2)2281
Hydraulic Circuit Diagram (at Boom RAISE Operation 1/2)2283
Hydraulic Circuit Diagram (at Boom RAISE Operation 2/2)2285
Hydraulic Circuit Diagram (at Left Swing Operation 1/2)2287
Hydraulic Circuit Diagram (at Left Swing Operation 2/2)2289
Hydraulic Circuit Diagram (at Boom RAISE and Left Swing Operation 1/2)2291
Hydraulic Circuit Diagram (at Boom RAISE and Left Swing Operation 2/2)2293
Electrical Circuit Diagram2295
Symbols Used in Electric Circuit Diagram2295
Electrical Circuit Diagram (1/9)2299
Electrical Circuit Diagram (2/9)2301
Electrical Circuit Diagram (3/9)2303
Electrical Circuit Diagram (4/9)2305
Electrical Circuit Diagram (5/9)2307
Electrical Circuit Diagram (6/9)2309
Electrical Circuit Diagram (7/9)2311
Electrical Circuit Diagram (8/9)2313
Electrical Circuit Diagram (9/9)2315
Index2317
IMAGES PREVIEW OF THE MANUAL:
S.M 28/12/24
