Komatsu PC78US-10 Install guide

HYDRAULIC
EXCAVATOR
SEN06518-03
PC78US-10
SERIAL NUMBERS
30001
and up

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00 INDEX AND FOREWORD
PC78US-10 00-1
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INDEX
00 INDEX AND FOREWORD ........................................................................................................................ 00-1
ABBREVIATION LIST ........................................................................................................................... 00-15
FOREWORD, SAFETY, BASIC INFORMATION ................................................................................... 00-21
HOW TO READ THE SHOP MANUAL........................................................................................... 00-21
SAFETY NOTICE FOR OPERATION............................................................................................. 00-23
PRECAUTIONS TO PREVENT FIRE............................................................................................. 00-31
ACTIONS IF FIRE OCCURS ......................................................................................................... 00-33
PRECAUTIONS FOR DISPOSING OF WASTE MATERIALS ........................................................ 00-34
PRECAUTIONS FOR HANDLING HYDRAULIC EQUIPMENT ...................................................... 00-35
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF PIPINGS................................ 00-38
PRECAUTIONS FOR HANDLING ELECTRICAL EQUIPMENT..................................................... 00-44
PRECAUTIONS FOR HANDLING FUEL SYSTEM EQUIPMENT .................................................. 00-46
PRECAUTIONS FOR HANDLING INTAKE SYSTEM EQUIPMENT .............................................. 00-47
PRACTICAL USE OF KOMTRAX .................................................................................................. 00-48
DISCONNECT AND CONNECT PUSH-PULL TYPE COUPLER ................................................... 00-49
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF CONNECTORS ..................... 00-53
METHOD FOR DISCONNECTING AND CONNECTING DEUTSCH CONNECTOR ..................... 00-57
METHOD FOR DISCONNECTING AND CONNECTING SLIDE LOCK TYPE CONNECTOR ....... 00-58
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PULL ... 00-60
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PUSH .. 00-61
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH HOUSING TO ROTATE .
................................................................................................................................................... 00-63
HOW TO READ ELECTRICAL WIRE CODE ................................................................................. 00-64
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD.................................................... 00-68
STANDARD TIGHTENING TORQUE TABLE................................................................................. 00-71
CONVERSION TABLE................................................................................................................... 00-78
01 SPECIFICATIONS .................................................................................................................................... 01-1
CONTENTS ............................................................................................................................................ 01-2
ABBREVIATION LIST ............................................................................................................................. 01-3
SPECIFICATIONS .................................................................................................................................. 01-9
SPECIFICATION DRAWING............................................................................................................ 01-9
WORKING RANGE DRAWINGS ....................................................................................................01-11
SPECIFICATIONS ......................................................................................................................... 01-12
WEIGHT TABLE ............................................................................................................................ 01-16
TABLE OF FUEL, COOLANT, AND LUBRICANTS ........................................................................ 01-18
10 STRUCTURE AND FUNCTION ................................................................................................................ 10-1
CONTENTS ............................................................................................................................................ 10-2
ABBREVIATION LIST ............................................................................................................................. 10-5
BOOT-UP SYSTEM ...............................................................................................................................10-11
LAYOUT DRAWING OF BOOT-UP SYSTEM..................................................................................10-11
SYSTEM OPERATING LAMP SYSTEM ........................................................................................ 10-12
BATTERY DISCONNECT SWITCH ............................................................................................... 10-13
ENGINE SYSTEM ................................................................................................................................ 10-15
LAYOUT DRAWING OF ENGINE SYSTEM................................................................................... 10-15
ENGINE CONTROL SYSTEM ....................................................................................................... 10-17
AUTO-DECELERATION SYSTEM................................................................................................. 10-20
ENGINE AUTOMATIC WARM-UP SYSTEM .................................................................................. 10-22
OVERHEAT PREVENTION SYSTEM ............................................................................................ 10-24
TURBOCHARGER PROTECTION SYSTEM................................................................................. 10-25
AUTOMATIC IDLE STOP SYSTEM ............................................................................................... 10-26
COMPONENT PARTS OF ENGINE SYSTEM ............................................................................... 10-29
COOLING SYSTEM.............................................................................................................................. 10-44
LAYOUT DRAWING OF COOLING SYSTEM ................................................................................ 10-44
CONTROL SYSTEM............................................................................................................................. 10-47
LAYOUT DRAWING OF CONTROL SYSTEM ............................................................................... 10-47
MACHINE MONITOR SYSTEM ..................................................................................................... 10-49
INDEX 00 INDEX AND FOREWORD
00-2 PC78US-10
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KOMTRAX SYSTEM...................................................................................................................... 10-50
COMPONENT PARTS OF CONTROL SYSTEM............................................................................ 10-51
HYDRAULIC SYSTEM.......................................................................................................................... 10-78
LAYOUT DRAWING OF HYDRAULIC SYSTEM ............................................................................ 10-78
CLSS ............................................................................................................................................. 10-81
ENGINE AND PUMP COMBINED CONTROL SYSTEM................................................................ 10-84
COMPONENT PARTS OF HYDRAULIC SYSTEM ........................................................................ 10-88
WORK EQUIPMENT SYSTEM ............................................................................................................10-155
LAYOUT DRAWING OF WORK EQUIPMENT SYSTEM ..............................................................10-155
STRUCTURE OF VALVE CONTROL............................................................................................10-158
PPC LOCK SYSTEM ....................................................................................................................10-160
WORK EQUIPMENT AND TRAVEL AUTOMATIC LOCK SYSTEM ..............................................10-161
OVERLOAD CAUTION SYSTEM..................................................................................................10-163
OIL FLOW ADJUSTER SYSTEM FOR ATTACHMENT.................................................................10-165
COMPONENT PARTS OF WORK EQUIPMENT SYSTEM...........................................................10-166
SWING SYSTEM .................................................................................................................................10-195
LAYOUT DRAWING OF SWING SYSTEM ...................................................................................10-195
SWING CONTROL SYSTEM DIAGRAM ......................................................................................10-198
COMPONENT PARTS OF SWING SYSTEM................................................................................10-200
TRAVEL SYSTEM................................................................................................................................10-212
LAYOUT DRAWING OF TRAVEL SYSTEM ..................................................................................10-212
TRAVEL CONTROL SYSTEM DIAGRAM.....................................................................................10-214
COMPONENT PARTS OF TRAVEL SYSTEM ..............................................................................10-216
UNDERCARRIAGE AND FRAME........................................................................................................10-230
LAYOUT DRAWING OF UNDERCARRIAGE ................................................................................10-230
IDLER CUSHION..........................................................................................................................10-232
WORK EQUIPMENT............................................................................................................................10-233
STRUCTURE OF WORK EQUIPMENT ........................................................................................10-233
FUNCTION OF WORK EQUIPMENT ...........................................................................................10-234
WORK EQUIPMENT CLEARANCE ADJUSTMENT SHIM............................................................10-235
BUCKET CLEARANCE ADJUSTMENT SHIM ..............................................................................10-236
CAB AND ITS ATTACHMENTS ...........................................................................................................10-237
ROPS CAB ...................................................................................................................................10-237
CAB MOUNT ................................................................................................................................10-238
TAKE WIRING HARNESS OUT OF CAB......................................................................................10-240
20 STANDARD VALUE TABLE ...................................................................................................................... 20-1
CONTENTS ............................................................................................................................................ 20-2
ABBREVIATION LIST ............................................................................................................................. 20-3
STANDARD VALUE TABLE FOR ENGINE ............................................................................................. 20-9
STANDARD VALUE TABLE FOR ENGINE: PC78US-10 ................................................................. 20-9
STANDARD VALUE TABLE FOR MACHINE......................................................................................... 20-12
STANDARD VALUE TABLE FOR MACHINE: PC78US-10............................................................. 20-12
MACHINE POSTURE AND PROCEDURE FOR MEASURING PERFORMANCE ......................... 20-26
STANDARD VALUE TABLE FOR ELECTRICAL ................................................................................... 20-30
STANDARD VALUE TABLE FOR ELECTRICAL ............................................................................ 20-30
30 TESTING AND ADJUSTING..................................................................................................................... 30-1
CONTENTS ............................................................................................................................................ 30-2
ABBREVIATION LIST ............................................................................................................................. 30-5
RELATED INFORMATION ON TESTING AND ADJUSTING .................................................................30-11
TOOLS FOR TESTING AND ADJUSTING......................................................................................30-11
SKETCH OF TOOLS FOR TESTING AND ADJUSTING ............................................................... 30-16
ENGINE AND COOLING SYSTEM....................................................................................................... 30-17
TEST ENGINE SPEED .................................................................................................................. 30-17
TEST EXHAUST GAS COLOR...................................................................................................... 30-21
TEST AND ADJUST VALVE CLEARANCE .................................................................................... 30-23
TEST COMPRESSION PRESSURE.............................................................................................. 30-25
TEST BLOWBY PRESSURE ......................................................................................................... 30-28
TEST ENGINE OIL PRESSURE .................................................................................................... 30-30
00 INDEX AND FOREWORD INDEX
PC78US-10 00-3
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TEST FUEL PRESSURE ............................................................................................................... 30-32
TEST FUEL RETURN RATE AND LEAKAGE................................................................................ 30-34
BLEED AIR FROM FUEL SYSTEM ............................................................................................... 30-38
TEST FUEL CIRCUIT FOR LEAKAGE .......................................................................................... 30-40
HANDLE CYLINDER CUT-OUT MODE OPERATION.................................................................... 30-42
HANDLE NO-INJECTION CRANKING OPERATION ..................................................................... 30-43
TEST AND ADJUST AIR CONDITIONER COMPRESSOR BELT TENSION ................................. 30-44
TEST ALTERNATOR BELT............................................................................................................ 30-45
TEST AUTOMATIC TENSIONER .................................................................................................. 30-46
WRITE INJECTOR COMPENSATION VALUE TO ENGINE CONTROLLER.................................. 30-49
POWER TRAIN..................................................................................................................................... 30-55
TEST SWING CIRCLE BEARING CLEARANCE ........................................................................... 30-55
UNDERCARRIAGE AND FRAME......................................................................................................... 30-56
TEST AND ADJUST TRACK TENSION......................................................................................... 30-56
HYDRAULIC SYSTEM.......................................................................................................................... 30-58
RELEASE REMAINING PRESSURE FROM HYDRAULIC SYSTEM............................................. 30-58
TEST AND ADJUST OIL PRESSURE IN WORK EQUIPMENT, AND TRAVEL CIRCUITS............ 30-62
TEST AND ADJUST SWING AND BLADE CIRCUIT OIL PRESSURE .......................................... 30-70
TEST OIL PRESSURE OF CONTROL CIRCUIT ........................................................................... 30-74
TEST AND ADJUST OIL PRESSURE IN PUMP PC CONTROL CIRCUIT .................................... 30-76
TEST AND ADJUST OIL PRESSURE IN PUMP LS CONTROL CIRCUIT..................................... 30-81
TEST OUTLET PRESSURE OF SOLENOID VALVE ..................................................................... 30-85
TEST PPC VALVE OUTLET PRESSURE ...................................................................................... 30-88
ADJUST WORK EQUIPMENT AND SWING PPC VALVES ........................................................... 30-90
TEST AND ADJUST TRAVEL DEVIATION .................................................................................... 30-91
TEST THE PARTS CAUSING HYDRAULIC DRIFT IN WORK EQUIPMENT................................. 30-94
TEST OIL LEAKAGE ..................................................................................................................... 30-96
BLEED AIR FROM HYDRAULIC CIRCUIT ...................................................................................30-100
CAB AND ITS ATTACHMENTS ...........................................................................................................30-105
METHOD FOR ADJUSTING MIRRORS .......................................................................................30-105
TEST AND ADJUST ENGINE HOOD CATCHER..........................................................................30-107
ELECTRICAL SYSTEM .......................................................................................................................30-110
SET AND OPERATE MACHINE MONITOR..................................................................................30-110
METHOD FOR STARTING UP KOMTRAX TERMINAL ................................................................30-156
ADJUST REARVIEW CAMERA ANGLE .......................................................................................30-161
HANDLE VOLTAGE CIRCUIT OF ENGINE CONTROLLER .........................................................30-163
HANDLE BATTERY DISCONNECT SWITCH ...............................................................................30-164
TEST DIODES ..............................................................................................................................30-165
Pm CLINIC...........................................................................................................................................30-166
Pm CLINIC SERVICE ...................................................................................................................30-166
40 TROUBLESHOOTING .............................................................................................................................. 40-1
CONTENTS ............................................................................................................................................ 40-2
ABBREVIATION LIST ............................................................................................................................. 40-8
RELATED INFORMATION ON TROUBLESHOOTING ......................................................................... 40-14
GENERAL TROUBLESHOOTING POINTS ................................................................................... 40-14
SEQUENCE OF EVENTS IN TROUBLESHOOTING..................................................................... 40-15
CHECKS BEFORE TROUBLESHOOTING.................................................................................... 40-17
INSPECTION PROCEDURE BEFORE TROUBLESHOOTING ..................................................... 40-19
TESTING IN ACCORDANCE WITH TESTING PROCEDURE....................................................... 40-21
ELECTRICAL SYSTEM TROUBLESHOOTING - PREPARATION................................................. 40-45
PROCEDURE FOR TESTING AND TROUBLESHOOTING .......................................................... 40-52
SYMPTOMS OF FAILURE AND TROUBLESHOOTING NUMBERS ............................................. 40-55
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE.................................................... 40-59
TROUBLESHOOTING METHOD FOR OPEN CIRCUIT IN WIRING HARNESS OF PRESSURE SEN-
SOR SYSTEM............................................................................................................................ 40-61
CONNECTORS LIST AND LAYOUT.............................................................................................. 40-63
CONNECTOR CONTACT IDENTIFICATION ................................................................................. 40-74
T-BRANCH BOX AND T-BRANCH ADAPTER TABLE ..................................................................40-114
INDEX 00 INDEX AND FOREWORD
00-4 PC78US-10
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FUSE LOCATION TABLE .............................................................................................................40-120
FAILURE CODES TABLE .............................................................................................................40-122
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE) .....................................................40-130
FAILURE CODE [879AKA]............................................................................................................40-130
FAILURE CODE [879AKB]............................................................................................................40-132
FAILURE CODE [879BKA]............................................................................................................40-133
FAILURE CODE [879BKB]............................................................................................................40-135
FAILURE CODE [879CKA]............................................................................................................40-137
FAILURE CODE [879CKB]............................................................................................................40-138
FAILURE CODE [879DKZ]............................................................................................................40-139
FAILURE CODE [879EMC] ...........................................................................................................40-141
FAILURE CODE [879FMC] ...........................................................................................................40-142
FAILURE CODE [879GKX] ...........................................................................................................40-143
FAILURE CODE [989L00] .............................................................................................................40-145
FAILURE CODE [989M00] ............................................................................................................40-146
FAILURE CODE [989N00] ............................................................................................................40-147
FAILURE CODE [A900FR]............................................................................................................40-148
FAILURE CODE [A900N6] ............................................................................................................40-149
FAILURE CODE [A900NY]............................................................................................................40-150
FAILURE CODE [AB00KE] ...........................................................................................................40-151
FAILURE CODE [B@BAZG] .........................................................................................................40-153
FAILURE CODE [B@BCNS] .........................................................................................................40-154
FAILURE CODE [CA115] ..............................................................................................................40-155
FAILURE CODE [CA122] ..............................................................................................................40-156
FAILURE CODE [CA123] ..............................................................................................................40-158
FAILURE CODE [CA131] ..............................................................................................................40-160
FAILURE CODE [CA132] ..............................................................................................................40-162
FAILURE CODE [CA144] ..............................................................................................................40-164
FAILURE CODE [CA145] ..............................................................................................................40-166
FAILURE CODE [CA153] ..............................................................................................................40-168
FAILURE CODE [CA154] ..............................................................................................................40-170
FAILURE CODE [CA187] ..............................................................................................................40-172
FAILURE CODE [CA221] ..............................................................................................................40-174
FAILURE CODE [CA222] ..............................................................................................................40-176
FAILURE CODE [CA227] ..............................................................................................................40-178
FAILURE CODE [CA234] ..............................................................................................................40-179
FAILURE CODE [CA238] ..............................................................................................................40-180
FAILURE CODE [CA239] ..............................................................................................................40-182
FAILURE CODE [CA271] ..............................................................................................................40-184
FAILURE CODE [CA272] ..............................................................................................................40-186
FAILURE CODE [CA322] ..............................................................................................................40-187
FAILURE CODE [CA324] ..............................................................................................................40-189
FAILURE CODE [CA331] ..............................................................................................................40-191
FAILURE CODE [CA332] ..............................................................................................................40-193
FAILURE CODE [CA343] ..............................................................................................................40-195
FAILURE CODE [CA351] ..............................................................................................................40-196
FAILURE CODE [CA352] ..............................................................................................................40-197
FAILURE CODE [CA356] ..............................................................................................................40-199
FAILURE CODE [CA357] ..............................................................................................................40-201
FAILURE CODE [CA386] ..............................................................................................................40-203
FAILURE CODE [CA435] ..............................................................................................................40-204
FAILURE CODE [CA441] ..............................................................................................................40-206
FAILURE CODE [CA442] ..............................................................................................................40-208
FAILURE CODE [CA449] ..............................................................................................................40-209
FAILURE CODE [CA451] ..............................................................................................................40-210
FAILURE CODE [CA452] ..............................................................................................................40-212
FAILURE CODE [CA466] ..............................................................................................................40-214
FAILURE CODE [CA515] ..............................................................................................................40-216
00 INDEX AND FOREWORD INDEX
PC78US-10 00-5
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FAILURE CODE [CA516] ..............................................................................................................40-218
FAILURE CODE [CA553] ..............................................................................................................40-220
FAILURE CODE [CA555] ..............................................................................................................40-221
FAILURE CODE [CA556] ..............................................................................................................40-222
FAILURE CODE [CA559] ..............................................................................................................40-223
FAILURE CODE [CA689] ..............................................................................................................40-227
FAILURE CODE [CA691] ..............................................................................................................40-229
FAILURE CODE [CA692] ..............................................................................................................40-231
FAILURE CODE [CA697] ..............................................................................................................40-233
FAILURE CODE [CA698] ..............................................................................................................40-234
FAILURE CODE [CA731] ..............................................................................................................40-235
FAILURE CODE [CA778] ..............................................................................................................40-237
FAILURE CODE [CA1117] ............................................................................................................40-239
FAILURE CODE [CA1695] ............................................................................................................40-240
FAILURE CODE [CA1696] ............................................................................................................40-241
FAILURE CODE [CA1843] ............................................................................................................40-242
FAILURE CODE [CA1844] ............................................................................................................40-244
FAILURE CODE [CA1896] ............................................................................................................40-246
FAILURE CODE [CA1942] ............................................................................................................40-247
FAILURE CODE [CA1961] ............................................................................................................40-248
FAILURE CODE [CA2185] ............................................................................................................40-249
FAILURE CODE [CA2186] ............................................................................................................40-250
FAILURE CODE [CA2249] ............................................................................................................40-252
FAILURE CODE [CA2272] ............................................................................................................40-253
FAILURE CODE [CA2311] ............................................................................................................40-256
FAILURE CODE [CA2349] ............................................................................................................40-257
FAILURE CODE [CA2353] ............................................................................................................40-259
FAILURE CODE [CA2357] ............................................................................................................40-261
FAILURE CODE [CA2765] ............................................................................................................40-262
FAILURE CODE [CA3419] ............................................................................................................40-263
FAILURE CODE [CA3421] ............................................................................................................40-265
FAILURE CODE [CA3724] ............................................................................................................40-267
FAILURE CODE [CA3918] ............................................................................................................40-269
FAILURE CODE [CA3919] ............................................................................................................40-270
FAILURE CODE [CA3921] ............................................................................................................40-271
FAILURE CODE [CA3922] ............................................................................................................40-272
FAILURE CODE [CA3923] ............................................................................................................40-274
FAILURE CODE [D110KB]............................................................................................................40-276
FAILURE CODE [D19JKZ] ............................................................................................................40-278
FAILURE CODE [D811MC] ...........................................................................................................40-281
FAILURE CODE [D862KA]............................................................................................................40-282
FAILURE CODE [D8ALKA] ...........................................................................................................40-283
FAILURE CODE [D8ALKB] ...........................................................................................................40-285
FAILURE CODE [D8AQKR] ..........................................................................................................40-287
FAILURE CODE [DA20MC] ..........................................................................................................40-289
FAILURE CODE [DA22KK] ...........................................................................................................40-290
FAILURE CODE [DA25KP] ...........................................................................................................40-293
FAILURE CODE [DA26KP] ...........................................................................................................40-296
FAILURE CODE [DA29KQ]...........................................................................................................40-298
FAILURE CODE [DA2LKA] ...........................................................................................................40-300
FAILURE CODE [DA2LKB] ...........................................................................................................40-302
FAILURE CODE [DA2QKR] ..........................................................................................................40-304
FAILURE CODE [DA2RKR] ..........................................................................................................40-306
FAILURE CODE [DAF0MB] ..........................................................................................................40-307
FAILURE CODE [DAF0MC] ..........................................................................................................40-308
FAILURE CODE [DAF8KB] ...........................................................................................................40-309
FAILURE CODE [DAF9KQ]...........................................................................................................40-311
FAILURE CODE [DAFGMC] .........................................................................................................40-312
INDEX 00 INDEX AND FOREWORD
00-6 PC78US-10
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FAILURE CODE [DAFLKA] ...........................................................................................................40-313
FAILURE CODE [DAFLKB] ...........................................................................................................40-315
FAILURE CODE [DAFQKR] ..........................................................................................................40-316
FAILURE CODE [DAZ9KQ]...........................................................................................................40-317
FAILURE CODE [DAZQKR] ..........................................................................................................40-318
FAILURE CODE [DB2QKR] ..........................................................................................................40-323
FAILURE CODE [DB2RKR] ..........................................................................................................40-328
FAILURE CODE [DDNRKA]..........................................................................................................40-333
FAILURE CODE [DDNRKY]..........................................................................................................40-335
FAILURE CODE [DDNS00]...........................................................................................................40-337
FAILURE CODE [DGH2KB] ..........................................................................................................40-339
FAILURE CODE [DHPAMA] ..........................................................................................................40-341
FAILURE CODE [DHS3MA] ..........................................................................................................40-343
FAILURE CODE [DHS4MA] ..........................................................................................................40-346
FAILURE CODE [DHS5MA] ..........................................................................................................40-349
FAILURE CODE [DHS8MA] ..........................................................................................................40-351
FAILURE CODE [DHS9MA] ..........................................................................................................40-354
FAILURE CODE [DHSAMA]..........................................................................................................40-357
FAILURE CODE [DHSBMA]..........................................................................................................40-360
FAILURE CODE [DHSCMA] .........................................................................................................40-363
FAILURE CODE [DHSDMA] .........................................................................................................40-366
FAILURE CODE [DKULKA]...........................................................................................................40-369
FAILURE CODE [DKULKB]...........................................................................................................40-371
FAILURE CODE [DKULKY]...........................................................................................................40-373
FAILURE CODE [DV20KB] ...........................................................................................................40-375
FAILURE CODE [DW43KA] ..........................................................................................................40-377
FAILURE CODE [DW43KB] ..........................................................................................................40-379
FAILURE CODE [DW43KY] ..........................................................................................................40-381
FAILURE CODE [DW45KA] ..........................................................................................................40-382
FAILURE CODE [DW45KB] ..........................................................................................................40-385
FAILURE CODE [DW45KY] ..........................................................................................................40-388
FAILURE CODE [DW4CKY]..........................................................................................................40-390
FAILURE CODE [DWJ0KA] ..........................................................................................................40-392
FAILURE CODE [DWJ0KB] ..........................................................................................................40-394
FAILURE CODE [DWJ0KY] ..........................................................................................................40-396
FAILURE CODE [DXA8KA]...........................................................................................................40-397
FAILURE CODE [DXA8KB]...........................................................................................................40-399
FAILURE CODE [DXE4KA]...........................................................................................................40-401
FAILURE CODE [DXE4KB]...........................................................................................................40-403
FAILURE CODE [DXE4KY]...........................................................................................................40-405
FAILURE CODE [DY20KA] ...........................................................................................................40-407
FAILURE CODE [DY20MA]...........................................................................................................40-409
FAILURE CODE [DY2CKB]...........................................................................................................40-411
FAILURE CODE [DY2DKB]...........................................................................................................40-414
FAILURE CODE [DY2EKB]...........................................................................................................40-416
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE) ...........................................................40-418
E-1 ENGINE DOES NOT START (ENGINE DOES NOT CRANK) ................................................40-418
E-2 MANUAL PREHEATING SYSTEM DOES NOT WORK..........................................................40-424
E-3 WHILE PREHEATING IS WORKING, PREHEATING MONITOR DOES NOT LIGHT UP.......40-427
E-4 WHEN STARTING SWITCH IS TURNED TO ON POSITION, MACHINE MONITOR DISPLAYS
NOTHING..................................................................................................................................40-429
E-5 ENGINE COOLANT TEMPERATURE MONITOR LIGHTS UP IN WHITE WHILE ENGINE IS RUN-
NING .........................................................................................................................................40-432
E-6 HYDRAULIC OIL TEMPERATURE MONITOR LIGHTS UP IN WHITE WHILE ENGINE IS RUN-
NING .........................................................................................................................................40-433
E-7 CHARGE LEVEL MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING .................40-434
E-8 FUEL LEVEL MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING........................40-435
00 INDEX AND FOREWORD INDEX
PC78US-10 00-7
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E-9 ENGINE COOLANT TEMPERATURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUN-
NING .........................................................................................................................................40-436
E-10 ENGINE OIL PRESSURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUNNING..40-437
E-11 HYDRAULIC OIL TEMPERATURE MONITOR LIGHTS UP IN RED WHILE ENGINE IS RUN-
NING .........................................................................................................................................40-438
E-12 FUEL GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR MAXIMUM ...................40-439
E-13 DISPLAY OF FUEL GAUGE DIFFERS FROM ACTUAL FUEL LEVEL.................................40-441
E-14 ENGINE COOLANT TEMPERATURE GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM
OR MAXIMUM...........................................................................................................................40-442
E-15 DISPLAY OF ENGINE COOLANT TEMPERATURE GAUGE DIFFERS FROM ACTUAL COOL-
ANT TEMPERATURE................................................................................................................40-443
E-16 HYDRAULIC OIL TEMPERATURE GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR
MAXIMUM .................................................................................................................................40-444
E-17 DISPLAY OF HYDRAULIC OIL TEMPERATURE GAUGE DIFFERS FROM ACTUAL OIL TEM-
PERATURE ...............................................................................................................................40-446
E-18 SOME AREAS OF MACHINE MONITOR SCREEN ARE NOT DISPLAYED ........................40-447
E-19 FUNCTION SWITCH DOES NOT OPERATE .......................................................................40-448
E-20 AUTOMATIC WARM-UP SYSTEM DOES NOT WORK (IN COLD WEATHER)....................40-449
E-21 WHEN AUTO-DECELERATOR SWITCH IS OPERATED, AUTO-DECELERATOR MONITOR
DOES NOT LIGHT UP OR DOES NOT GO OFF ......................................................................40-450
E-22 AUTO-DECELERATOR IS NOT OPERATED OR CANCELED WITH LEVER ......................40-451
E-23 WHEN WORKING MODE SWITCH IS OPERATED, WORKING MODE SELECTION SCREEN IS
NOT DISPLAYED ......................................................................................................................40-453
E-24 WHEN WORKING MODE IS CHANGED, SETTING OF ENGINE AND HYDRAULIC PUMP IS
NOT CHANGED........................................................................................................................40-454
E-25 WHEN TRAVEL SPEED SWITCH IS OPERATED, TRAVEL SPEED MONITOR DOES NOT
CHANGE...................................................................................................................................40-455
E-26 WHEN TRAVEL SPEED SELECTION IS CHANGED, ACTUAL TRAVEL SPEED DOES NOT
CHANGE...................................................................................................................................40-456
E-27 ALARM BUZZER CANNOT BE CANCELED ........................................................................40-457
E-28 SERVICE METER IS NOT DISPLAYED, WHILE STARTING SWITCH IS IN OFF POSITION.........
..................................................................................................................................................40-458
E-29 SERVICE MODE CANNOT BE SELECTED.........................................................................40-459
E-30 ALL OF WORK EQUIPMENTS, SWING, AND TRAVEL MECHANISM DO NOT MOVE ......40-460
E-31 ALL OF WORK EQUIPMENT, SWING, AND TRAVEL MECHANISM DO NOT LOCK..........40-463
E-32 WHEN SWING BRAKE CANCEL SWITCH IS SET TO CANCEL POSITION, MACHINE CANNOT
SWING ......................................................................................................................................40-465
E-33 WHEN SWING BRAKE CANCEL SWITCH IS SET TO NORMAL POSITION, SWING HOLDING
BRAKE DOES NOT OPERATE .................................................................................................40-467
E-34 WORK EQUIPMENT DOES NOT OPERATE WHILE LOCK LEVER AUTOMATIC RELEASE
SWITCH IS IN RELEASE POSITION ........................................................................................40-469
E-35 ALARM DOES NOT SOUND DURING TRAVEL ..................................................................40-471
E-36 ALARM DOES NOT STOP SOUNDING WHILE MACHINE IS STOPPED............................40-473
E-37 HORN DOES NOT SOUND..................................................................................................40-474
E-38 HORN DOES NOT STOP SOUNDING.................................................................................40-476
E-39 WHEN WIPER SWITCH IS OPERATED, WIPER MONITOR DOES NOT LIGHT UP OR GO OFF.
..................................................................................................................................................40-477
E-40 WHEN WIPER SWITCH IS OPERATED, WINDSHIELD WIPER DOES NOT OPERATE.....40-478
E-41 WHEN WINDOW WASHER SWITCH IS OPERATED, WINDOW WASHER DOES NOT OPER-
ATE ...........................................................................................................................................40-480
E-42 BOOM RAISE INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION ...
..................................................................................................................................................40-481
E-43 BOOM LOWER INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION .
..................................................................................................................................................40-482
E-44 ARM OUT INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION..........
..................................................................................................................................................40-483
E-45 ARM IN INDICATOR IS NOT DISPLAYED PROPERLY WITH MONITORING FUNCTION ..40-484
INDEX 00 INDEX AND FOREWORD
00-8 PC78US-10
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