Komatsu PC80MR-5 Hydraulic Excavator Shop Manual WENBM00141 PDF

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Komatsu PC80MR-5 Hydraulic Excavator Shop Manual WENBM00141 – PDF DOWNLOAD

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Komatsu PC80MR-5 Hydraulic Excavator Shop Manual WENBM00141 – PDF DOWNLOAD 

Language : English
Pages : 1096
Downloadable : Yes
File Type : PDF

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DESCRIPTION:

Komatsu PC80MR-5 Hydraulic Excavator Shop Manual WENBM00141 – PDF DOWNLOAD 

SERIAL NUMBERS PC80MR-5 F50003 and up

FOREWORD, SAFETY, BASIC INFORMATION
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.
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 SPECIFICATIONS
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.
50 DISASSEMBLY AND ASSEMBLY
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 THE OTHER INFORMATION
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.

TABLE OF CONTENTS:

Komatsu PC80MR-5 Hydraulic Excavator Shop Manual WENBM00141 – PDF DOWNLOAD 

SERIAL NUMBERS PC80MR-5 F50003 and up

00 INDEX AND FOREWORD 3
INDEX 4
ABBREVIATION LIST 13
FOREWORD, SAFETY, BASIC INFORMATION 19
HOW TO READ THE SHOP MANUAL 19
SAFETY NOTICE FOR OPERATION 21
PRECAUTIONS TO PREVENT FIRE 29
ACTIONS IF FIRE OCCURS 31
PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS 32
PRECAUTIONS FOR HANDLING HYDRAULIC EQUIPMENT 33
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF PIPINGS 36
PRECAUTIONS FOR HANDLING ELECTRICAL EQUIPMENT 43
PRECAUTIONS FOR HANDLING FUEL SYSTEM EQUIPMENT 45
PRECAUTIONS FOR HANDLING INTAKE SYSTEM EQUIPMENT 46
PRACTICAL USE OF KOMTRAX 47
DISCONNECT AND CONNECT PUSH-PULL TYPE COUPLER 48
METHOD FOR DISCONNECTING AND CONNECTING TYPE 1 PUSH-PULL TYPE COUPLER 48
METHOD FOR DISCONNECTING AND CONNECTING TYPE 2 PUSH-PULL TYPE COUPLER 49
METHOD FOR DISCONNECTING AND CONNECTING TYPE 3 PUSH-PULL TYPE COUPLER 50
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF CONNECTORS 52
METHOD FOR DISCONNECTING AND CONNECTING DEUTSCH CONNECTOR 56
METHOD FOR DISCONNECTING AND CONNECTING SLIDE LOCK TYPE CONNECTOR 57
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PULL 59
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PUSH 60
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH HOUSING TO ROTATE 62
HOW TO READ ELECTRICAL WIRE CODE 63
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD 67
STANDARD TIGHTENING TORQUE TABLE 70
CONVERSION TABLE 77
01 SPECIFICATIONS 83
CONTENTS 84
ABBREVIATION LIST 85
SPECIFICATIONS 91
SPECIFICATION DRAWING 91
SPECIFICATION DRAWING (STANDARD BOOM) 91
SPECIFICATION DRAWING (2-PIECE BOOM) 93
WORKING RANGE DRAWINGS 94
WORKING RANGE (STANDARD BOOM) 94
WORKING RANGE (2-PIECE BOOM) 96
SPECIFICATIONS 98
SPECIFICATIONS 98
WEIGHT TABLE 103
WEIGHT TABLE 103
TABLE OF FUEL, COOLANT, AND LUBRICANTS 105
10 STRUCTURE AND FUNCTION 107
CONTENTS 108
ABBREVIATION LIST 110
BOOT-UP SYSTEM 116
LAYOUT DRAWING OF BOOT-UP SYSTEM 116
SYSTEM OPERATING LAMP SYSTEM 118
SYSTEM OPERATING LAMP SYSTEM DIAGRAM 118
FUNCTION OF SYSTEM OPERATING LAMP SYSTEM 118
BATTERY DISCONNECT SWITCH 120
FUNCTION OF BATTERY DISCONNECT SWITCH 120
ENGINE SYSTEM 121
LAYOUT DRAWING OF ENGINE SYSTEM 121
ENGINE CONTROL SYSTEM 122
ENGINE CONTROL SYSTEM DIAGRAM 122
FUNCTION OF ENGINE CONTROL SYSTEM 123
AUTO-DECELERATION SYSTEM 126
AUTO-DECELERATION SYSTEM DIAGRAM 126
FUNCTION OF AUTO-DECELERATION SYSTEM 126
OPERATION OF AUTO-DECELERATION SYSTEM 127
OVERHEAT PREVENTION SYSTEM 128
OVERHEAT PREVENTION SYSTEM DIAGRAM 128
FUNCTION OF OVERHEAT PREVENTION SYSTEM 128
AUTOMATIC IDLE STOP SYSTEM 130
AUTOMATIC IDLE STOP SYSTEM DIAGRAM 130
FUNCTION OF AUTOMATIC IDLE STOP SYSTEM 130
COMPONENT PARTS OF ENGINE SYSTEM 132
PTO 132
COOLING SYSTEM 133
LAYOUT DRAWING OF COOLING SYSTEM 133
SPECIFICATIONS OF COOLING SYSTEM 134
CONTROL SYSTEM 135
LAYOUT DRAWING OF CONTROL SYSTEM 135
MACHINE MONITOR SYSTEM 136
MACHINE MONITOR SYSTEM DIAGRAM 136
KOMTRAX SYSTEM 137
KOMTRAX SYSTEM DIAGRAM 137
FUNCTION OF KOMTRAX SYSTEM 137
COMPONENT PARTS OF CONTROL SYSTEM 138
MACHINE MONITOR 138
KOMTRAX TERMINAL 146
MACHINE CONTROLLER 148
RESISTOR FOR PC-EPC VALVE 152
FUEL CONTROL DIAL 153
HYDRAULIC SYSTEM 155
LAYOUT DRAWING OF HYDRAULIC SYSTEM 155
CLSS 157
STRUCTURE OF CLSS 157
FUNCTION OF CLSS 158
ENGINE AND PUMP COMBINED CONTROL SYSTEM 160
ENGINE AND PUMP COMBINED CONTROL SYSTEM DIAGRAM 160
FUNCTION OF ENGINE AND PUMP COMBINED CONTROL SYSTEM 161
COMPONENT PARTS OF HYDRAULIC SYSTEM 163
HYDRAULIC TANK 163
MAIN PUMP 165
CONTROL VALVE 175
WORK EQUIPMENT SYSTEM 214
LAYOUT DRAWING OF WORK EQUIPMENT SYSTEM 214
STRUCTURE OF VALVE CONTROL 218
PPC LOCK SYSTEM 220
FUNCTION OF PPC LOCK SYSTEM 220
WORK EQUIPMENT AND TRAVEL AUTOMATIC LOCK SYSTEM 221
FUNCTION OF WORK EQUIPMENT AND TRAVEL AUTOMATIC LOCK SYSTEM 221
OPERATION OF WORK EQUIPMENT AND TRAVEL AUTOMATIC LOCK SYSTEM 221
OIL FLOW ADJUSTER SYSTEM FOR ATTACHMENT 222
ATTACHMENT OIL FLOW ADJUSTER SYSTEM DIAGRAM 222
FUNCTION OF OIL FLOW ADJUSTER SYSTEM FOR ATTACHMENT 223
COMPONENT PARTS OF WORK EQUIPMENT SYSTEM 224
WORK EQUIPMENT AND SWING PPC VALVE 224
BLADE PPC VALVE 229
BOOM SWING AND 2-PIECE BOOM PPC VALVE 230
SOLENOID VALVE GROUP 232
PILOT CIRCUIT ACCUMULATOR 234
SWING SYSTEM 235
LAYOUT DRAWING OF SWING SYSTEM 235
COMPONENT PARTS OF SWING SYSTEM 236
SWING MOTOR 236
SWING MACHINERY 244
SWING CIRCLE 246
TRAVEL SYSTEM 248
LAYOUT DRAWING OF TRAVEL SYSTEM 248
TRAVEL CONTROL SYSTEM DIAGRAM 250
FUNCTION OF TRAVEL CONTROL SYSTEM 250
COMPONENT PARTS OF TRAVEL SYSTEM 252
TRAVEL MOTOR 252
TRAVEL PPC VALVE 260
CENTER SWIVEL JOINT 265
UNDERCARRIAGE AND FRAME 266
LAYOUT DRAWING OF UNDERCARRIAGE 266
SPECIFICATIONS OF UNDERCARRIAGE 266
IDLER CUSHION 267
STRUCTURE OF IDLER CUSHION 267
SPECIFICATIONS OF IDLER CUSHION 267
WORK EQUIPMENT 268
STRUCTURE OF WORK EQUIPMENT 268
FUNCTION OF WORK EQUIPMENT 270
WORK EQUIPMENT CLEARANCE ADJUSTMENT SHIM 271
FUNCTION OF WORK EQUIPMENT CLEARANCE ADJUSTMENT SHIM 271
CAB AND ITS ATTACHMENTS 272
ROPS CAB 272
STRUCTURE OF ROPS CAB 272
FUNCTION OF ROPS CAB 272
20 STANDARD VALUE TABLE 273
CONTENTS 274
ABBREVIATION LIST 275
STANDARD VALUE TABLE FOR ENGINE 281
STANDARD VALUE TABLE FOR ENGINE: PC80MR-5 281
STANDARD VALUE TABLE FOR MACHINE 283
STANDARD VALUE TABLE FOR MACHINE: PC80MR-5 283
MACHINE POSTURE AND PROCEDURE FOR MEASURING PERFORMANCE 295
30 TESTING AND ADJUSTING 299
CONTENTS 300
ABBREVIATION LIST 302
RELATED INFORMATION ON TESTING AND ADJUSTING 308
ENGINE AND COOLING SYSTEM 309
TEST ENGINE SPEED 309
METHOD FOR TESTING ENGINE SPEED 309
TEST EXHAUST GAS COLOR 311
METHOD FOR TESTING EXHAUST GAS COLOR BY HANDY SMOKE CHECKER 311
METHOD FOR TESTING EXHAUST GAS COLOR BY SMOKE METER 312
TEST AND ADJUST VALVE CLEARANCE 313
METHOD FOR TESTING VALVE CLEARANCE 313
METHOD FOR ADJUSTING VALVE CLEARANCE 314
TEST COMPRESSION PRESSURE 315
METHOD FOR TESTING COMPRESSION PRESSURE 315
TEST ENGINE OIL PRESSURE 317
METHOD FOR TESTING ENGINE OIL PRESSURE 317
BLEED AIR FROM FUEL SYSTEM 319
METHOD FOR BLEEDING AIR FROM FUEL SYSTEM 319
TEST FUEL CIRCUIT FOR LEAKAGE 320
METHOD FOR TESTING FUEL CIRCUIT FOR LEAKAGE 320
HANDLE CYLINDER CUT-OUT MODE OPERATION 321
TEST AND ADJUST ALTERNATOR BELT TENSION 322
METHOD FOR TESTING ALTERNATOR BELT TENSION 322
METHOD FOR ADJUSTING ALTERNATOR BELT TENSION 322
TEST AND ADJUST AIR CONDITIONER COMPRESSOR BELT TENSION 324
METHOD FOR CHECKING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION 324
POWER TRAIN 326
TEST SWING CIRCLE BEARING CLEARANCE 326
METHOD FOR TESTING SWING CIRCLE BEARING CLEARANCE 326
UNDERCARRIAGE AND FRAME 327
TEST AND ADJUST TRACK TENSION 327
METHOD FOR TESTING TRACK TENSION 327
METHOD FOR ADJUSTING TRACK TENSION 327
HYDRAULIC SYSTEM 329
RELEASE REMAINING PRESSURE FROM HYDRAULIC SYSTEM 329
METHOD FOR RELEASING REMAINING PRESSURE FROM HYDRAULIC TANK 329
METHOD FOR RELEASING REMAINING PRESSURE IN PPC ACCUMULATOR CIRCUIT 329
METHOD FOR RELEASING REMAINING PRESSURE IN HYDRAULIC CYLINDER CIRCUIT 329
METHOD FOR RELEASING REMAINING PRESSURE FROM SWING MOTOR CIRCUIT 334
METHOD FOR RELEASING REMAINING PRESSURE FROM TRAVEL MOTOR CIRCUIT 334
TEST AND ADJUST OIL PRESSURE IN WORK EQUIPMENT, TRAVEL, AND BOOM SWING CIRCUITS 335
METHOD FOR TESTING OIL PRESSURE IN WORK EQUIPMENT, TRAVEL, AND BOOM SWING CIRCUITS 335
343
TEST AND ADJUST SWING AND BLADE CIRCUIT OIL PRESSURE 345
METHOD FOR TESTING SWING AND BLADE CIRCUIT OIL PRESSURE 345
METHOD FOR ADJUSTING SWING AND BLADE CIRCUIT OIL PRESSURE 349
TEST AND ADJUST OIL PRESSURE OF CONTROL CIRCUIT 351
METHOD FOR TESTING OIL PRESSURE OF CONTROL CIRCUIT 351
ADJUST OIL PRESSURE IN PUMP PC CONTROL CIRCUIT 354
METHOD FOR ADJUSTING OIL PRESSURE IN PUMP PC CONTROL CIRCUIT 354
TEST AND ADJUST OIL PRESSURE IN PUMP LS CONTROL CIRCUIT 356
METHOD FOR TESTING LS DIFFERENTIAL PRESSURE BY TESTING TOOL 356
METHOD FOR ADJUSTING LS VALVE 358
TEST OUTLET PRESSURE OF SOLENOID VALVE 359
METHOD FOR TESTING OUTLET PRESSURE OF SOLENOID VALVE BY MACHINE MONITOR 359
METHOD FOR TESTING OUTLET PRESSURE OF SOLENOID VALVE BY TESTING TOOL 360
OPERATING CONDITION OF SOLENOID VALVE 361
TEST PPC VALVE OUTLET PRESSURE 362
METHOD FOR TESTING OUTLET PRESSURE OF PPC VALVE BY MACHINE MONITOR 362
METHOD FOR TESTING OUTLET PRESSURE OF PPC VALVE BY TESTING TOOL 365
ADJUST WORK EQUIPMENT AND SWING PPC VALVES 367
METHOD FOR ADJUSTING PLAY OF WORK EQUIPMENT AND SWING PPC VALVES 367
TEST AND ADJUST TRAVEL DEVIATION 368
METHOD FOR TESTING TRAVEL DEVIATION 368
TEST THE PARTS CAUSING HYDRAULIC DRIFT IN WORK EQUIPMENT 369
METHOD FOR TESTING THE PARTS CAUSING HYDRAULIC DRIFT OF BOOM CYLINDER AND BUCKET CYLINDER 369
METHOD FOR TESTING THE PARTS CAUSING HYDRAULIC DRIFT OF ARM CYLINDER 369
METHOD FOR TESTING THE PARTS CAUSING HYDRAULIC DRIFT OF PPC VALVE 370
TEST OIL LEAKAGE 371
METHOD FOR TESTING OIL LEAKAGE FROM BOOM CYLINDER 371
METHOD FOR TESTING OIL LEAKAGE FROM ARM CYLINDER 371
METHOD FOR TESTING OIL LEAKAGE FROM BUCKET CYLINDER 372
METHOD FOR TESTING OIL LEAKAGE FROM BLADE CYLINDER 372
BLEED AIR FROM HYDRAULIC CIRCUIT 374
METHOD FOR BLEEDING AIR FROM HYDRAULIC CIRCUIT 375
PRESSURIZE HYDRAULIC TANK 379
METHOD FOR PRESSURIZING HYDRAULIC TANK 379
ELECTRICAL SYSTEM 380
SET AND OPERATE MACHINE MONITOR 380
OPERATOR MODE 382
CHECKING FUNCTION BY LCD (LIQUID CRYSTAL DISPLAY) 382
CHECKING FUNCTION OF SERVICE METER 383
METHOD FOR SETTING USAGE LIMITATION AND CHANGING PASSWORD 383
SERVICE MODE 385
METHOD FOR OPERATING SERVICE MODE 385
METHOD FOR CHECKING PRE-DEFINED MONITORING INFORMATION 387
METHOD FOR CHECKING SELF-DEFINE MONITORING INFORMATION 390
ABNORMALITY RECORD MENU 396
METHOD FOR CONFIRMING MAINTENANCE RECORD 400
METHOD FOR OPERATING MAINTENANCE MODE SETTING 401
METHOD FOR OPERATING PHONE NUMBER ENTRY SETTING 405
DEFAULT MENU 406
DIAGNOSTIC TESTS MENU 412
ADJUSTMENT MENU 419
METHOD FOR OPERATING BATTERY DISCONNECT SWITCH SETTING 427
KOMTRAX SETTINGS MENU 428
METHOD FOR DISPLAYING SERVICE MESSAGE 429
METHOD FOR STARTING UP KOMTRAX TERMINAL 431
HANDLE VOLTAGE CIRCUIT OF ENGINE CONTROLLER 436
TEST DIODES 437
METHOD FOR TESTING DIODE USING DIGITAL TESTER 437
METHOD FOR TESTING DIODE USING ANALOG TESTER 437
40 TROUBLESHOOTING 439
CONTENTS 440
ABBREVIATION LIST 444
RELATED INFORMATION ON TROUBLESHOOTING 450
GENERAL TROUBLESHOOTING POINTS 450
SEQUENCE OF EVENTS IN TROUBLESHOOTING 451
CHECKS BEFORE TROUBLESHOOTING 453
INSPECTION PROCEDURE BEFORE TROUBLESHOOTING 455
WALK-AROUND CHECK 455
TESTING IN ACCORDANCE WITH TESTING PROCEDURE 457
CHECK FUEL LEVEL AND TYPE 457
CHECK FUEL PREFILTER 458
WATER SEPARATOR – CHECK / DRAIN WATER AND SEDIMENT 459
CHECK MAIN FILTER 460
CHECK ENGINE OIL LEVEL (OIL AMOUNT IN OIL PAN) 461
CHECK COOLANT LEVEL (RESERVOIR TANK) 463
CHECK CLOGGING OF AIR CLEANER 463
CLEAN AIR CLEANER OUTER ELEMENT 464
REPLACE AIR CLEANER ELEMENT 466
CHECK HYDRAULIC OIL LEVEL 468
CHECK HYDRAULIC OIL STRAINER 470
CHECK HYDRAULIC FILTER 473
CHECK OIL LEVEL IN FINAL DRIVE CASE 474
BLEED AIR FROM FUEL SYSTEM 475
BLEED AIR FROM HYDRAULIC SYSTEM 475
ELECTRICAL EQUIPMENT – CHECK METHOD 475
ELECTRICAL SYSTEM TROUBLESHOOTING – PREPARATION 482
PROCEDURE FOR TESTING AND TROUBLESHOOTING 485
SYMPTOMS OF FAILURE AND TROUBLESHOOTING NUMBERS 488
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE 492
T-BRANCH BOX AND T-BRANCH ADAPTER TABLE 494
FUSE LOCATION TABLE 500
FAILURE CODES TABLE 502
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE) 512
FAILURE CODE [6AZ0ZG] 512
FAILURE CODE [989L00] 514
FAILURE CODE [989M00] 515
FAILURE CODE [989N00] 516
FAILURE CODE [AQ20R1] 517
FAILURE CODE [B@BCNS] 518
FAILURE CODE [D19JKZ] 519
FAILURE CODE [D811MC] 522
FAILURE CODE [D862KA] 523
FAILURE CODE [D8ALKA] 524
FAILURE CODE [D8ALKB] 526
FAILURE CODE [D8AQKR] 528
FAILURE CODE [DAF0KT] 530
FAILURE CODE [DAF0MB] 531
FAILURE CODE [DAF0MC] 532
FAILURE CODE [DAF3KK] 533
FAILURE CODE [DAF9KQ] 535
FAILURE CODE [DAFGMC] 536
FAILURE CODE [DAFLKA] 537
FAILURE CODE [DAFLKB] 539
FAILURE CODE [DAFQKR] 541
FAILURE CODE [DB2QKR] 542
FAILURE CODE [DBH0MC] 546
FAILURE CODE [DBH2KK] 547
FAILURE CODE [DBH5KP] 550
FAILURE CODE [DBHLKA] 552
FAILURE CODE [DBHLKB] 554
FAILURE CODE [DBHQKR] 556
FAILURE CODE [DDNRKA] 561
FAILURE CODE [DDNRKY] 563
FAILURE CODE [DDNS00] 565
FAILURE CODE [DDWLKA] 567
FAILURE CODE [DDWLKB] 569
FAILURE CODE [DFB1KZ] 571
FAILURE CODE [DFB2KZ] 573
FAILURE CODE [DFB3L8] 575
FAILURE CODE [DFB4L8] 577
FAILURE CODE [DFB5KZ] 579
FAILURE CODE [DFB6KZ] 581
FAILURE CODE [DHPAMA] 583
FAILURE CODE [DHX1MA] 585
FAILURE CODE [DKULKA] 587
FAILURE CODE [DKULKB] 589
FAILURE CODE [DKULKY] 591
FAILURE CODE [DV00KB] 593
FAILURE CODE [DV20KB] 594
FAILURE CODE [DV50KB] 596
FAILURE CODE [DV50KY] 598
FAILURE CODE [DW43KA] 600
FAILURE CODE [DW43KB] 602
FAILURE CODE [DW43KY] 604
FAILURE CODE [DW4CKY] 605
FAILURE CODE [DXA8KA] 607
FAILURE CODE [DXA8KB] 609
FAILURE CODE [DXE7KA] 611
FAILURE CODE [DXE7KB] 613
FAILURE CODE [DXE7KY] 615
FAILURE CODE [DXE8KA] 617
FAILURE CODE [DXE8KB] 619
FAILURE CODE [DXE8KY] 621
FAILURE CODE [DXE9KA] 623
FAILURE CODE [DXE9KB] 625
FAILURE CODE [DXE9KY] 627
FAILURE CODE [DXEAKA] 629
FAILURE CODE [DXEAKB] 631
FAILURE CODE [DXEAKY] 633
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE) 635
E-1 ENGINE DOES NOT START (ENGINE DOES NOT CRANK) 635
E-2 ENGINE DOES NOT START (FUEL FEED PUMP SYSTEM) 641
E-3 AUTOMATIC PREHEATING SYSTEM DOES NOT WORK 643
E-4 WHEN STARTING SWITCH IS TURNED TO ON POSITION, MACHINE MONITOR DISPLAYS NOTHING 645
E-5 ENGINE COOLANT TEMPERATURE MONITOR LIGHTS UP IN WHITE WHILE ENGINE IS RUNNING 648
E-6 CHARGE LEVEL MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING 649
E-7 FUEL LEVEL MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING 650
E-8 ENGINE COOLANT TEMPERATURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING 651
E-9 ENGINE OIL PRESSURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING 652
E-10 FUEL GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR MAXIMUM 653
E-11 DISPLAY OF FUEL GAUGE DIFFERS FROM ACTUAL FUEL LEVEL 655
E-12 ENGINE COOLANT TEMPERATURE GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR MAXIMUM 656
E-13 DISPLAY OF ENGINE COOLANT TEMPERATURE GAUGE DIFFERS FROM ACTUAL COOLANT TEMPERATURE 657
E-14 SOME AREAS OF MACHINE MONITOR SCREEN ARE NOT DISPLAYED 658
E-15 FUNCTION SWITCH DOES NOT OPERATE 659
E-16 AUTO-DECELERATOR IS NOT OPERATED OR CANCELED WITH LEVER 660
E-17 WHEN WORKING MODE IS CHANGED, SETTING OF ENGINE AND HYDRAULIC PUMP IS NOT CHANGED 661
E-18 WHEN TRAVEL SPEED SELECTION IS CHANGED, ACTUAL TRAVEL SPEED DOES NOT CHANGE 662
E-19 ALARM BUZZER DOES NOT SOUND 664
E-20 ALARM BUZZER CANNOT BE CANCELED 665
E-21 SERVICE METER IS NOT DISPLAYED, WHILE STARTING SWITCH IS IN OFF POSITION 666
E-22 SERVICE MODE CANNOT BE SELECTED 667
E-23 ALL OF WORK EQUIPMENTS, SWING, AND TRAVEL MECHANISM DO NOT MOVE 668
E-24 ALL OF WORK EQUIPMENT, SWING, AND TRAVEL MECHANISM DO NOT LOCK 670
E-25 ALARM DOES NOT SOUND DURING TRAVEL 672
E-26 ALARM DOES NOT STOP SOUNDING WHILE MACHINE IS STOPPED 674
E-27 HORN DOES NOT SOUND 675
E-28 HORN DOES NOT STOP SOUNDING 677
E-29 NONE OF WORKING LAMP, TRAVEL LAMP, OR ADDITIONAL LAMP DOES NOT LIGHT UP 679
E-30 WHEN WIPER SWITCH IS OPERATED, WINDSHIELD WIPER DOES NOT OPERATE 683
E-31 WHEN WINDOW WASHER SWITCH IS OPERATED, WINDOW WASHER DOES NOT OPERATE 685
E-32 TRAVEL INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION 687
E-33 Swing or Arm IN IS NOT DISPLAYED NORMALLY IN MONITORING FUNCTION 688
E-34 Work equipment IS NOT DISPLAYED NORMALLY IN MONITORING FUNCTION 689
E-35 KOMTRAX SYSTEM DOES NOT OPERATE NORMALLY 691
TROUBLESHOOTING FOR HYDRAULIC AND MECHANICAL SYSTEMS (H MODE) 692
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (H MODE) 692
H-1 ALL WORK EQUIPMENT, TRAVEL, SWING OR BLADE DO NOT OPERATE 693
H-2 ALL WORK EQUIPMENTS OR TRAVEL DOES NOT OPERATE 694
H-3 TRAVEL OR BLADE DOES NOT OPERATE 695
H-4 SWING OR BLADE DOES NOT OPERATE 696
H-5 ALL WORK EQUIPMENT, TRAVEL, SWING AND BLADE SPEED OR POWER IS LOW 697
H-6 ALL WORK EQUIPMENT AND TRAVEL SPEED OR POWER IS LOW 698
H-7 TRAVEL AND BLADE SPEED OR POWER IS LOW 699
H-8 SWING AND BLADE SPEED OR POWER IS LOW 700
H-9 FINE CONTROL PERFORMANCE OR RESPONSE IS POOR 701
H-10 UNUSUAL NOISE IS HEARD FROM AROUND HYDRAULIC PUMP 702
H-11 ENGINE SPEED DROPS LARGELY OR ENGINE STOPS 703
H-12 ALL WORK EQUIPMENTS SPEED OR POWER IS LOW 705
H-13 ALL WORK EQUIPMENTS AND BLADE SPEED OR POWER IS LOW 706
H-14 BLADE DOES NOT OPERATE 707
H-15 ALL WORK EQUIPMENTS DO NOT OPERATE 708
H-16 ALL WORK EQUIPMENTS OR BLADE DO NOT OPERATE 709
H-17 SPEED OR POWER OF BOOM IS LOW 710
H-18 ARM SPEED OR POWER IS LOW 712
H-19 BUCKET SPEED OR POWER IS LOW 713
H-20 BLADE SPEED OR POWER IS LOW 714
H-21 BOOM SWING SPEED OR POWER IS LOW 716
H-22 WORK EQUIPMENT DOES NOT MOVE IN SINGLE OPERATION 717
H-23 HYDRAULIC DRIFT OF BOOM IS LARGE 718
H-24 HYDRAULIC DRIFT OF ARM IS LARGE 719
H-25 HYDRAULIC DRIFT OF BUCKET IS LARGE 720
H-26 HYDRAULIC DRIFT OF BLADE IS LARGE 721
H-27 TIME LAG OF WORK EQUIPMENT IS LARGE 723
H-28 IN COMBINED OPERATION OF WORK EQUIPMENT, EQUIPMENT HAVING HEAVIER LOAD MOVES SLOWER 724
H-29 MACHINE DOES NOT TRAVEL STRAIGHT 725
H-30 MACHINE DOES NOT MOVE OFF STRAIGHT 727
H-31 MACHINE IS NOT STEERED WELL OR STEERING POWER IS LOW 728
H-32 TRAVEL SPEED IS LOW 730
H-33 BOTH SIDES OF CRAWLERS DO NOT MOVE 732
H-34 ONE OF TRACKS DOES NOT RUN 733
H-35 TRAVEL SPEED DOES NOT CHANGE, OR TRAVEL SPEED IS TOO SLOW OR FAST 735
H-36 UPPER STRUCTURE DOES NOT SWING BOTH TO THE RIGHT AND LEFT 736
H-37 SWINGS ONLY IN ONE DIRECTION 738
H-38 SWING ACCELERATION OR SWING SPEED IS LOW IN BOTH DIRECTIONS (RIGHT AND LEFT) 740
H-39 SWING ACCELERATION PERFORMANCE IS POOR OR SWING SPEED IS SLOW IN ONLY ONE DIRECTION 742
H-40 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWINGING (BOTH RIGHT AND LEFT) 743
H-41 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWINGING (ONLY ONE DIRECTION EITHER RIGHT OR LEFT) 744
H-42 SHOCK IS LARGE WHEN UPPER STRUCTURE STOPS SWINGING 745
H-43 LARGE UNUSUAL NOISE IS HEARD WHEN UPPER STRUCTURE STOPS SWINGING 746
H-44 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS APPLIED) 747
H-45 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS RELEASED) 748
TROUBLESHOOTING OF ENGINE (S-MODE) 749
INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (S MODE) 749
S-1 ENGINE DOES NOT CRANK WHEN STARTING SWITCH IS TURNED TO START POSITION 750
S-2 ENGINE CRANKS BUT NO EXHAUST GAS COMES OUT 751
S-3 FUEL IS BEING INJECTED BUT ENGINE DOES NOT START (MISFIRING: ENGINE CRANKS BUT DOES NOT START) 752
S-4 ENGINE STARTABILITY IS POOR 753
S-5 ENGINE DOES NOT PICK UP SMOOTHLY 755
S-6 ENGINE STOPS DURING OPERATION 757
S-7 ENGINE RUNS ROUGH OR IS UNSTABLE 758
S-8 ENGINE LACKS POWER 759
S-9 KDPF GETS CLOGGED IN A SHORT TIME 761
S-10 ENGINE OIL CONSUMPTION IS EXCESSIVE 762
S-11 OIL BECOMES CONTAMINATED QUICKLY 763
S-12 FUEL CONSUMPTION IS EXCESSIVE 764
S-13 OIL IS IN COOLANT (OR COOLANT SPURTS BACK OR COOLANT LEVEL GOES DOWN) 765
S-14 OIL PRESSURE DROPS 766
S-15 FUEL MIXES INTO ENGINE OIL 768
S-16 WATER MIXES INTO ENGINE OIL (MILKY) 769
S-17 COOLANT TEMPERATURE RISES TOO HIGH (OVERHEATING) 770
S-18 UNUSUAL NOISE IS HEARD 771
S-19 VIBRATION IS EXCESSIVE 772
S-20 AIR CANNOT BE BLED FROM FUEL CIRCUIT 773
50 DISASSEMBLY AND ASSEMBLY 775
CONTENTS 776
ABBREVIATION LIST 779
RELATED INFORMATION ON DISASSEMBLY AND ASSEMBLY 785
HOW TO READ THIS MANUAL 785
COATING MATERIALS LIST 787
SPECIAL TOOLS LIST 791
SPECIAL TOOLS LIST 796
ENGINE AND COOLING SYSTEM 802
REMOVE AND INSTALL SUPPLY PUMP ASSEMBLY 802
METHOD FOR REMOVING SUPPLY PUMP ASSEMBLY 802
METHOD FOR INSTALLING SUPPLY PUMP ASSEMBLY 805
REMOVE AND INSTALL STARTER ASSEMBLY 808
METHOD FOR REMOVING STARTER ASSEMBLY 808
METHOD FOR INSTALLING STARTER ASSEMBLY 809
REMOVE AND INSTALL RADIATOR AND OIL COOLER ASSEMBLY 811
METHOD FOR REMOVING RADIATOR AND OIL COOLER ASSEMBLY 811
METHOD FOR INSTALLING RADIATOR AND OIL COOLER ASSEMBLY 814
REMOVE AND INSTALL ENGINE AND MAIN PUMP ASSEMBLY 815
METHOD FOR REMOVING ENGINE AND MAIN PUMP ASSEMBLY 815
METHOD FOR INSTALLING ENGINE AND MAIN PUMP ASSEMBLY 819
REMOVE AND INSTALL ENGINE HOOD ASSEMBLY 822
METHOD FOR REMOVING ENGINE HOOD ASSEMBLY 822
METHOD FOR INSTALLING ENGINE HOOD ASSEMBLY 822
REMOVE AND INSTALL PARTITION COVER ASSEMBLY 824
METHOD FOR REMOVING PARTITION COVER ASSEMBLY 824
METHOD FOR INSTALLING PARTITION COVER ASSEMBLY 828
REMOVE AND INSTALL FUEL TANK ASSEMBLY 830
METHOD FOR REMOVING FUEL TANK ASSEMBLY 830
METHOD FOR INSTALLING FUEL TANK ASSEMBLY 832
REMOVE AND INSTALL AIR CONDITIONER CONDENSER ASSEMBLY 833
METHOD FOR REMOVING AIR CONDITIONER CONDENSER ASSEMBLY 833
METHOD FOR INSTALLING AIR CONDITIONER CONDENSER ASSEMBLY 834
POWER TRAIN 835
REMOVE AND INSTALL TRAVEL MOTOR ASSEMBLY 835
METHOD FOR REMOVING TRAVEL MOTOR ASSEMBLY 835
METHOD FOR INSTALLING TRAVEL MOTOR ASSEMBLY 836
REMOVE AND INSTALL SWING MOTOR AND SWING MACHINERY ASSEMBLY 837
METHOD FOR REMOVING SWING MOTOR AND SWING MACHINERY ASSEMBLY 837
METHOD FOR INSTALLING SWING MOTOR AND SWING MACHINERY ASSEMBLY 839
DISASSEMBLE AND ASSEMBLE SWING MACHINERY ASSEMBLY 840
METHOD FOR DISASSEMBLING SWING MACHINERY ASSEMBLY 840
METHOD FOR ASSEMBLING SWING MACHINERY ASSEMBLY 845
REMOVE AND INSTALL SWING CIRCLE ASSEMBLY 853
METHOD FOR REMOVING SWING CIRCLE ASSEMBLY 853
METHOD FOR INSTALLING SWING CIRCLE ASSEMBLY 853
UNDERCARRIAGE AND FRAME 855
REMOVE AND INSTALL SPROCKET 855
METHOD FOR REMOVING SPROCKET 855
METHOD FOR INSTALLING SPROCKET 855
DISASSEMBLE AND ASSEMBLE IDLER ASSEMBLY 856
METHOD FOR DISASSEMBLING IDLER ASSEMBLY 856
METHOD FOR ASSEMBLING IDLER ASSEMBLY 857
DISASSEMBLE AND ASSEMBLE OF IDLER CUSHION ASSEMBLY 860
METHOD FOR DISASSEMBLING IDLER CUSHION ASSEMBLY 860
METHOD FOR ASSEMBLING IDLER CUSHION ASSEMBLY 861
DISASSEMBLE AND ASSEMBLE TRACK ROLLER ASSEMBLY 863
METHOD FOR DISASSEMBLING TRACK ROLLER ASSEMBLY 863
METHOD FOR ASSEMBLING TRACK ROLLER ASSEMBLY 865
REMOVE AND INSTALL REVOLVING FRAME ASSEMBLY 868
METHOD FOR REMOVING REVOLVING FRAME ASSEMBLY 868
METHOD FOR INSTALLING REVOLVING FRAME ASSEMBLY 870
REMOVE AND INSTALL COUNTERWEIGHT ASSEMBLY 871
METHOD FOR REMOVING COUNTERWEIGHT ASSEMBLY 871
METHOD FOR INSTALLING COUNTERWEIGHT ASSEMBLY 873
HYDRAULIC SYSTEM 874
REMOVE AND INSTALL CENTER SWIVEL JOINT ASSEMBLY 874
METHOD FOR REMOVING CENTER SWIVEL JOINT ASSEMBLY 874
METHOD FOR INSTALLING CENTER SWIVEL JOINT ASSEMBLY 876
DISASSEMBLE AND ASSEMBLE CENTER SWIVEL JOINT ASSEMBLY 878
METHOD FOR DISASSEMBLING CENTER SWIVEL JOINT ASSEMBLY 878
METHOD FOR ASSEMBLING CENTER SWIVEL JOINT ASSEMBLY 879
REMOVE AND INSTALL HYDRAULIC TANK ASSEMBLY 880
METHOD FOR REMOVING HYDRAULIC TANK ASSEMBLY 880
METHOD FOR INSTALLING HYDRAULIC TANK ASSEMBLY 882
REMOVE AND INSTALL MAIN PUMP ASSEMBLY 883
METHOD FOR REMOVING MAIN PUMP ASSEMBLY 883
METHOD FOR INSTALLING MAIN PUMP ASSEMBLY 885
REMOVE AND INSTALL HYDRAULIC GEAR PUMP ASSEMBLY 886
METHOD FOR REMOVING HYDRAULIC GEAR PUMP ASSEMBLY 886
METHOD FOR INSTALLING HYDRAULIC GEAR PUMP ASSEMBLY 887
DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT PPC VALVE ASSEMBLY 889
METHOD FOR DISASSEMBLING WORK EQUIPMENT PPC VALVE ASSEMBLY 889
METHOD FOR ASSEMBLING WORK EQUIPMENT PPC VALVE ASSEMBLY 890
DISASSEMBLE AND ASSEMBLE TRAVEL PPC VALVE ASSEMBLY 892
METHOD FOR DISASSEMBLING TRAVEL PPC VALVE ASSEMBLY 892
METHOD FOR ASSEMBLING TRAVEL PPC VALVE ASSEMBLY 893
WORK EQUIPMENT 895
REMOVE AND INSTALL BUCKET CYLINDER ASSEMBLY 895
METHOD FOR REMOVING BUCKET CYLINDER ASSEMBLY 895
METHOD FOR INSTALLING BUCKET CYLINDER ASSEMBLY 896
REMOVE AND INSTALL BLADE CYLINDER ASSEMBLY 898
METHOD FOR REMOVING BLADE CYLINDER ASSEMBLY 898
METHOD FOR INSTALLING BLADE CYLINDER ASSEMBLY 898
REMOVE AND INSTALL ARM CYLINDER ASSEMBLY 900
METHOD FOR REMOVING ARM CYLINDER ASSEMBLY 900
METHOD FOR INSTALLING ARM CYLINDER ASSEMBLY 901
REMOVE AND INSTALL BOOM CYLINDER ASSEMBLY 903
METHOD FOR REMOVING BOOM CYLINDER ASSEMBLY 903
METHOD FOR INSTALLING BOOM CYLINDER ASSEMBLY 904
REMOVE AND INSTALL WORK EQUIPMENT ASSEMBLY 906
METHOD FOR REMOVING WORK EQUIPMENT ASSEMBLY 906
METHOD FOR INSTALLING WORK EQUIPMENT ASSEMBLY 908
DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT CYLINDER ASSEMBLY 910
METHOD FOR DISASSEMBLING WORK EQUIPMENT CYLINDER ASSEMBLY 911
METHOD FOR ASSEMBLING WORK EQUIPMENT CYLINDER ASSEMBLY 913
REMOVE AND INSTALL SWING BRACKET ASSEMBLY 916
METHOD FOR REMOVING SWING BRACKET ASSEMBLY 916
METHOD FOR INSTALLING SWING BRACKET ASSEMBLY 917
CAB AND ITS ATTACHMENTS 919
REMOVE AND INSTALL OPERATOR’S CAB ASSEMBLY 919
METHOD FOR REMOVING OPERATOR’S CAB ASSEMBLY 919
METHOD FOR INSTALLING OPERATOR’S CAB ASSEMBLY 924
REMOVE AND INSTALL OPERATOR CAB GLASS (ADHERED GLASS) 926
METHOD FOR REMOVING OPERATOR CAB GLASS (ADHERED GLASS) 927
METHOD FOR INSTALLING OPERATOR CAB GLASS (ADHERED GLASS) 928
REMOVE AND INSTALL FRONT WINDOW ASSEMBLY 936
METHOD FOR REMOVING FRONT WINDOW ASSEMBLY 936
METHOD FOR INSTALLING FRONT WINDOW ASSEMBLY 937
REMOVE AND INSTALL OPERATOR’S SEAT 939
METHOD FOR REMOVING OPERATOR’S SEAT 939
METHOD FOR INSTALLING OPERATOR’S SEAT 939
REMOVE AND INSTALL SEAT BELT 941
METHOD FOR REMOVING SEAT BELT 941
METHOD FOR INSTALLING SEAT BELT 941
ELECTRICAL SYSTEM 942
REMOVE AND INSTALL ENGINE CONTROLLER ASSEMBLY 942
METHOD FOR REMOVING ENGINE CONTROLLER ASSEMBLY 942
METHOD FOR INSTALLING ENGINE CONTROLLER ASSEMBLY 943
REMOVE AND INSTALL MACHINE CONTROLLER ASSEMBLY 944
METHOD FOR REMOVING MACHINE CONTROLLER ASSEMBLY 944
METHOD FOR INSTALLING MACHINE CONTROLLER ASSEMBLY 945
REMOVE AND INSTALL MACHINE MONITOR ASSEMBLY 947
METHOD FOR REMOVING MACHINE MONITOR ASSEMBLY 947
METHOD FOR INSTALLING MACHINE MONITOR ASSEMBLY 948
REMOVE AND INSTALL KOMTRAX TERMINAL ASSEMBLY 950
METHOD FOR REMOVING KOMTRAX TERMINAL ASSEMBLY 950
METHOD FOR INSTALLING KOMTRAX TERMINAL ASSEMBLY 950
60 MAINTENANCE STANDARD 953
CONTENTS 954
ABBREVIATION LIST 955
ENGINE AND COOLING SYSTEM 961
MAINTENANCE STANDARD FOR PTO 961
MAINTENANCE STANDARD OF COOLING SYSTEM 962
POWER TRAIN 963
MAINTENANCE STANDARD OF SWING CIRCLE 963
MAINTENANCE STANDARD OF SWING MACHINERY 964
MAINTENANCE STANDARD OF SPROCKET 965
UNDERCARRIAGE AND FRAME 966
MAINTENANCE STANDARD OF TRACK FRAME AND IDLER CUSHION 966
MAINTENANCE STANDARD OF IDLER 967
MAINTENANCE STANDARD OF TRACK ROLLER 969
MAINTENANCE STANDARD OF CARRIER ROLLER 970
MAINTENANCE STANDARD OF TRACK SHOE 971
MAINTENANCE STANDARD OF TRIPLE SHOE 974
MAINTENANCE STANDARD OF ROAD LINER 975
MAINTENANCE STANDARD FOR RUBBER SHOE 976
HYDRAULIC SYSTEM 977
MAINTENANCE STANDARD OF HYDRAULIC TANK 977
MAINTENANCE STANDARD OF MAIN PUMP 978
MAINTENANCE STANDARD OF SWING MOTOR 980
MAINTENANCE STANDARD OF TRAVEL MOTOR 981
MAINTENANCE STANDARD OF CONTROL VALVE 982
MAINTENANCE STANDARD OF WORK EQUIPMENT AND SWING PPC VALVE 993
MAINTENANCE STANDARD OF BLADE PPC VALVE 996
MAINTENANCE STANDARD OF BOOM SWING AND 2-PIECE BOOM PPC VALVE 998
MAINTENANCE STANDARD OF TRAVEL PPC VALVE 1000
Japanese Only 1003
WORK EQUIPMENT 1004
MAINTENANCE STANDARD OF WORK EQUIPMENT LINKAGE 1004
DIMENSIONS OF BUCKET 1013
MAINTENANCE STANDARD OF BOOM CYLINDER 1015
MAINTENANCE STANDARD OF ARM CYLINDER 1016
MAINTENANCE STANDARD OF BUCKET CYLINDER 1017
MAINTENANCE STANDARD OF BLADE CYLINDER 1018
MAINTENANCE STANDARD OF 2-PIECE BOOM CYLINDER 1019
MAINTENANCE STANDARD OF BOOM SWING CYLINDER 1020
80 APPENDIX 1021
CONTENTS 1022
ABBREVIATION LIST 1023
AIR CONDITIONER SYSTEM 1029
PRECAUTIONS FOR REFRIGERANT 1029
CONFIGURATION AND FUNCTION OF REFRIGERATION CYCLE 1030
OUTLINE OF REFRIGERATION CYCLE 1031
COMPONENT PARTS OF AIR CONDITIONER SYSTEM 1033
AIR CONDITIONER UNIT 1033
CONFIGURATION DIAGRAM OF AIR CONDITIONER UNIT 1033
COMPRESSOR 1035
STRUCTURE OF COMPRESSOR 1035
SPECIFICATIONS OF COMPRESSOR 1035
FUNCTION OF COMPRESSOR 1035
CONDENSER 1037
STRUCTURE OF CONDENSER 1037
SPECIFICATIONS OF CONDENSER 1037
FUNCTION OF CONDENSER 1037
RECEIVER DRIER 1038
STRUCTURE OF RECEIVER DRIER 1038
SPECIFICATIONS OF RECEIVER DRIER 1038
FUNCTION OF RECEIVER DRIER 1038
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE 1039
A-1 TROUBLESHOOTING FOR POWER SUPPLY SYSTEM (AIR CONDITIONER DOES NOT OPERATE) 1041
A-2 TROUBLESHOOTING FOR BLOWER MOTOR SYSTEM (NO AIR COMES OUT OR AIR FLOW IS ABNORMAL) 1044
A-3 TROUBLESHOOTING FOR TEMPERATURE CONTROL FUNCTION 1048
A-4 TROUBLESHOOTING FOR AIR CONDITINOER COMPRESSOR AND COOLING SYSTEM (ELECTRICAL SYSTEM) 1051
A-5 TROUBLESHOOTING FOR AIR CONDITINOER COMPRESSOR AND COOLING SYSTEM (MECHANICAL SYSTEMS) 1055
A-6 TROUBLESHOOTING FOR HOT WATER CIRCUIT SYSTEM 1056
A-7 UNUSUAL NOISE IS HEARD FROM AIR CONDITINOER RELATED PARTS 1057
A-8 WATER LEAKS FROM AIR CONDITINOER RELATED PARTS 1058
A-9 TROUBLESHOOTING FOR FRESH/RECIRC AIR CHANGEOVER 1059
PRECAUTIONS FOR DISCONNECTING AND CONNECTING HOSES AND TUBES IN AIR CONDITIONER PIPINGS 1060
HANDLE COMPRESSOR OIL 1062
90 CIRCUIT DIAGRAMS 1063
CONTENTS 1064
ABBREVIATION LIST 1065
HYDRAULIC CIRCUIT DIAGRAM 1071
SYMBOLS USED IN HYDRAULIC CIRCUIT DIAGRAM 1071
HYDRAULIC CIRCUIT DIAGRAM (1/2) 1075
HYDRAULIC CIRCUIT DIAGRAM (2/2) 1077
ELECTRICAL CIRCUIT DIAGRAM 1079
SYMBOLS USED IN ELECTRICAL CIRCUIT DIAGRAM 1079
ELECTRICAL CIRCUIT DIAGRAM (1/2) 1083
ELECTRICAL CIRCUIT DIAGRAM (2/2) 1085
INDEX 1087

S.V 12/12/24