Komatsu PC170LC-10 Hydraulic Excavator Shop Manual WENBM00041 PDF

Description

Komatsu PC170LC-10 Hydraulic Excavator Shop Manual WENBM00041 – PDF DOWNLOAD

FILE DETAILS:

Komatsu PC170LC-10 Hydraulic Excavator Shop Manual WENBM00041 – PDF DOWNLOAD 

Language : English
Pages : 1470
Downloadable : Yes
File Type : PDF

IMAGES PREVIEW OF THE MANUAL:

DESCRIPTION:

Komatsu PC170LC-10 Hydraulic Excavator Shop Manual WENBM00041 – PDF DOWNLOAD 

SERIAL NUMBERS PC170LC-10 F30003 and up

How to read the shop manual
Composition of shop manual
• This shop manual describes the technical information required for the services performed in a workshop.
The shop manual is divided into the following chapters for the convenience of use.
00. Index and foreword
• This section includes the index, foreword, safety and basic information.
01. Specification
• This section explains the specifications of the machine.
10. Structure and function
• This section explains the structure and function of the machine. The section of “Structure and function”
serves not only to give an understanding for the structure of each component, but also serves as reference
material for troubleshooting.
20. Standard value table
• The standard values for a new machine and trouble shooting are indicated. This standard value table is
used for testing and adjusting, and determining a failure at troubleshooting.
30. Testing and adjusting
• This section describes the measuring tools and how to measure, and how to adjust various parts. As for the
standard value and failure criterion, see the standard value table.
40. Troubleshooting
• This section describes the troubleshooting in a suspected area when a failure occurs and the remedy for
the failure. Troubleshooting is described by each failure mode.
50. Disassembly and assembly
• This section explains the procedures for removing, installing, disassembling, and assembling each part or
component and the special tools for the works as well as precautions for doing them safely. In addition,
tightening torque, and quantity and weight of coating material, oil, grease, and coolant required for the
works are also explained.
60. Maintenance standard
• This section describes the maintenance standard values for each component. This section gives the criterion
values for each component and required remedy at disassembly or maintenance.
80. Appendix
• The structure and function, testing and adjusting, and troubleshooting for all of the other components or
equipment which can not be separately classified are explained together in the appendix.
90. Diagrams and drawings
• This section gives hydraulic circuit diagrams and electrical circuit diagrams.

TABLE OF CONTENTS:

Komatsu PC170LC-10 Hydraulic Excavator Shop Manual WENBM00041 – PDF DOWNLOAD 

SERIAL NUMBERS PC170LC-10 F30003 and up

00 Index and foreword
Table of contents 2
Foreword, safety and general information 14
Important safety notice 14
Fire prevention 19
Dispose of waste materials 20
How to read the shop manual 21
Explanation of terms for maintenance standard 23
Handling equipment of fuel system devices 25
Handling of intake system parts 26
Handling of hydraulic equipment 27
Method of disconnecting and connecting of push-pull type coupler 29
Handling of electrical equipment 32
How to read electric wire code 40
Precautions when performing operation 43
Practical use of KOMTRAX 48
Standard tightening torque table 49
List of abbreviation 55
Conversion table 60
01 Specification
Table of contents 2
Specifications 3
Specification drawing 3
Working range drawings 4
Specifications 5
Weight table 9
Table of fuel, coolant, and lubricants 10
10 Structure and function
Engine and cooling system 3
Engine related parts 3
Variable flow turbocharger 5
EGR system piping drawing 9
EGR system circuit diagram 11
EGR valve 12
EGR cooler 14
KCCV layout drawing 16
KCCV ventilator 19
KDOC muffler 21
Cooling system 23
Power train 25
Power train system 25
Swing circle 27
Swing machinery 28
Final drive 30
Undercarriage and frame 32
Track frame and idler cushion 32
Hydraulic system 34
Hydraulic component layout 34
00 Index and foreword
Table of contents
PC170LC-10 00-3
Valve control 37
Hydraulic tank 38
CLSS 40
Main pump 44
Control valve 71
Swing motor 126
Travel motor 128
PPC valve 143
Solenoid valve 166
Attachment circuit selector valve (for high pressure circuit) 169
Attachment circuit selector valve (for low pressure circuit) 171
Center swivel joint 174
Accumulator 176
Work equipment 177
Work equipment 177
Work equipment shim 178
Bucket play adjustment shim 179
Cab and its attachments 180
Cab mount and cab tipping stopper 180
ROPS cab 181
Electrical system 182
Electrical control system 182
Machine monitor system 225
KOMTRAX system 246
Sensor 249
20 Standard value tables
Contents 2
Standard service value table 3
Standard value table for engine 3
Standard value table for machine 5
Standard value table for electrical system 22
30 Testing and adjusting
Related information on testing and adjusting 3
Tools for testing and adjusting 3
Sketch of tools for testing and adjusting 6
Engine and cooling system 7
Testing engine speed 7
Testing boost pressure 8
Testing and adjusting valve clearance 11
Testing compression pressure 14
Testing blowby pressure 18
Testing fuel pressure 20
Testing fuel discharge, return and leakage 25
Bleeding air from fuel system 30
Testing fuel circuit for leakage 32
Checking and adjusting air conditioner compressor belt tension 35
Replacing fan belt 36
Power train 37
Testing swing circle bearing clearance 37
Undercarriage and frame 38
00 Index and foreword
Table of contents
00-4 PC170LC-10
Testing and adjusting track tension 38
Hydraulic system 39
Releasing remaining pressure from hydraulic circuit 39
Testing oil pressure of control circuit 40
Testing and adjusting oil pressure in work equipment, swing, and travel circuits 41
Testing and adjusting oil pressure in pump PC control circuit 45
Testing and adjusting oil pressure in pump LS control circuit 48
Testing outlet pressure of solenoid valve 52
Testing PPC valve outlet pressure 55
Adjusting play of work equipment and swing PPC valves 57
Testing pump swash plate sensor 58
Isolating the parts causing hydraulic drift in work equipment 59
Testing and adjusting travel deviation 61
Testing oil leakage 63
Bleeding air from hydraulic circuit 66
Cab and its attachments 68
Checking cab tipping stopper 68
Adjusting mirrors 69
Electrical system 71
Special functions of machine monitor 71
KOMTRAX terminal start-up procedure 129
Adjusting rearview camera angle 132
Handling voltage circuit of engine controller 134
Handling battery disconnect switch 135
Testing diodes 136
Pm Clinic 137
Pm Clinic service 137
40 Troubleshooting
Table of contents 2
Related information on troubleshooting 8
Troubleshooting points 8
Sequence of events in troubleshooting 10
Checks before troubleshooting 12
Inspection procedure before troubleshooting 14
Testing in accordance with testing procedure 15
Preparation work for troubleshooting of electrical system 32
Classification and procedure for troubleshooting 37
Symptom and troubleshooting numbers 40
Information in troubleshooting table 43
Procedure for troubleshooting wiring harness of pressure sensor system for open circuit 45
Connector list and layout 48
Connector contact identification 60
T-branch box and T-branch adapter table 98
Fuse location table 103
Failure codes table 105
Troubleshooting by failure code (Display of code) 112
Failure code [879AKA] A/C Inner Sensor Open Circuit 112
Failure code [879AKB] A/C Inner Sensor Short Circuit 113
Failure code [879BKA] A/C Outer Sensor Open Circuit 114
Failure code [879BKB] A/C Outer Sensor Short Circuit 115
Failure code [879CKA] Ventilating Sensor Open Circuit 116
00 Index and foreword
Table of contents
PC170LC-10 00-5
Failure code [879CKB] Ventilating Sensor Short Circuit) 117
Failure code [879DKZ] Sunlight Sensor Open Or Short Circuit 118
Failure code [879EMC] Ventilation Damper Abnormality 119
Failure code [879FMC] Air Mix Damper Abnormality 120
Failure code [879GKX] Refrigerant Abnormality 121
Failure code [989L00] Engine Controller Lock Caution 1 122
Failure code [989M00] Engine Controller Lock Caution 2 123
Failure code [989N00] Engine Controller Lock Caution 3 124
Failure code [AA10NX] Air Cleaner Clogging 125
Failure code [AB00KE] Charge Voltage Low 127
Failure code [B@BAZG] Eng Oil Press Low 129
Failure code [B@BAZK] Eng Oil Level Low 130
Failure code [B@BCNS] Eng Water Overheat 131
Failure code [B@BCZK] Eng Water Level Low 132
Failure code [B@HANS] Hyd Oil Overheat 134
Failure code [CA115] Eng Ne and Bkup Speed Sens Error 135
Failure code [CA122] Chg Air Press Sensor High Error 136
Failure code [CA123] Chg Air Press Sensor Low Error 138
Failure code [CA131] Throttle Sensor High Error 140
Failure code [CA132] Throttle Sensor Low Error 142
Failure code [CA144] Coolant Temp Sens High Error 144
Failure code [CA145] Coolant Temp Sens Low Error 146
Failure code [CA153] Chg Air Temp Sensor High Error 148
Failure code [CA154] Chg Air Temp Sensor Low Error 150
Failure code [CA187] Sensor 2 Supply Volt Low Error 152
Failure code [CA221] Ambient Press Sensor High Error 154
Failure code [CA222] Ambient Press Sens Low Error 156
Failure code [CA227] Sensor 2 Supply Volt High Error 158
Failure code [CA234] Eng Overspeed 159
Failure code [CA238] Ne Speed Sensor Supply Volt Error 160
Failure code [CA239] Ne Speed Sens Supply Volt High Error 161
Failure code [CA271] IMV/PCV1 Short Error 162
Failure code [CA272] IMV/PCV1 Open Error 164
Failure code [CA295] Ambient Press Sens In Range Error 166
Failure code [CA322] Inj #1(L#1) Open/Short Error 167
Failure code [CA324] Inj #3(L#3) Open/Short Error 169
Failure code [CA331] Inj #2(L#2) Open/Short Error 171
Failure code [CA332] Inj #4(L#4) Open/Short Error 173
Failure code [CA343] ECM Critical Internal Failure 175
Failure code [CA351] Injectors Drive Circuit Error 176
Failure code [CA352] Sensor 1 Supply Volt Low Error 177
Failure code [CA356] Mass Air Flow Sensor High Error 179
Failure code [CA357] Mass Air Flow Sensor Low Error 181
Failure code [CA386] Sensor 1 Supply Volt High Error 183
Failure code [CA428] Water in Fuel Sensor High Error 184
Failure code [CA429] Water in Fuel Sensor Low Error 186
Failure code [CA435] Eng Oil Press Sw Error 188
Failure code [CA441] Battery Voltage Low Error 189
Failure code [CA442] Battery Voltage High Error 191
Failure code [CA449] Rail Press Very High Error 192
Failure code [CA451] Rail Press Sensor High Error 193
Failure code [CA452] Rail Press Sensor Low Error 195
Failure code [CA466] KVGT Motor Driver Position Error 197
Failure code [CA488] Chg Air Temp High Torque Derate 199
00 Index and foreword
Table of contents
00-6 PC170LC-10
Failure code [CA515] Rail Press Sens Sup Volt High Error 200
Failure code [CA516] Rail Press Sens Sup Volt Low Error 202
Failure code [CA553] Rail Press High Error 204
Failure code [CA555] Crankcase Press High Error 1 205
Failure code [CA556] Crankcase Press High Error 2 206
Failure code [CA559] Rail Press Low Error 207
Failure code [CA689] Eng Ne Speed Sensor Error 210
Failure code [CA691] Intake Air Temp Sens High Error 212
Failure code [CA692] Intake Air Temp Sens Low Error 214
Failure code [CA697] ECM Internal Temp Sensor High Error 216
Failure code [CA698] ECM Int Temp Sensor Low Error 217
Failure code [CA731] Eng Bkup Speed Sens Phase Error 218
Failure code [CA778] Eng Bkup Speed Sensor Error 219
Failure code [CA1117] Persistent Data Lost Error 223
Failure code [CA1695] Sensor 5 Supply Volt High Error 224
Failure code [CA1696] Sensor 5 Supply Volt Low Error 225
Failure code [CA1843] Crankcase Press Sens High Error 226
Failure code [CA1844] Crankcase Press Sens Low Error 228
Failure code [CA1896] EGR Valve Stuck Error 230
Failure code [CA1942] Crankcase Press Sens In Range Error 231
Failure code [CA1961] EGR_Motor Driver IC Over Temp Error 232
Failure code [CA2185] Throt Sensor Sup Volt High Error 233
Failure code [CA2186] Throt Sensor Sup Volt Low Error 235
Failure code [CA2249] Rail Press Very Low Error 237
Failure code [CA2272] EGR Valve Pos Sens Low Error 238
Failure code [CA2311] IMV Solenoid Error 240
Failure code [CA2349] EGR Valve Solenoid Open Error 241
Failure code [CA2353] EGR Valve Solenoid Short Error 243
Failure code [CA2357] EGR Valve Servo Error 245
Failure code [CA2373] Exhaust Manifold Press Sens High Error 246
Failure code [CA2374] Exhaust Manifold Press Sens Low Error 248
Failure code [CA2375] EGR Orifice Temp Sens High Error 250
Failure code [CA2376] EGR Orifice Temp Sens Low Error 252
Failure code [CA2554] Exh Manifold Press Sens In Range Error 254
Failure code [CA2555] Grid Htr Relay Volt Low Error 255
Failure code [CA2556] Grid Htr Relay Volt High Error 257
Failure code [CA2961] EGR Orifice Temp High Error 1 259
Failure code [CA2973] Chg Air Press Sensor In Range Error 260
Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error 261
Failure code [CA3421] Mass Air Flow Sensor Sup Volt Low Error 263
Failure code [CA3724] EGR/KVGT Motor Driver Power Low Error 265
Failure code [CA3741] Rail Press Valve Trip Error 267
Failure code [CA3918] KVGT Stuck Error 268
Failure code [CA3919] KVGT Motor Driver IC Over Temp Error 269
Failure code [CA3921] KVGT Servo Error 2 270
Failure code [CA3922] KVGT Motor Driver Open Error 271
Failure code [CA3923] KVGT Motor Driver Short Error 273
Failure code [D110KB] Battery Relay Drive Short Circuit 275
Failure code [D19JKZ] Personal Code Relay Abnormality 277
Failure code [D811MC] KOMTRAX Error 280
Failure code [D862KA] GPS Antenna Open Circuit 281
Failure code [D8ALKA] System Operating Lamp Disconnection (KOMTRAX) 282
Failure code [D8ALKB] System Operating Lamp Short Circuit (KOMTRAX) 284
Failure code [D8AQKR] CAN2 Discon (KOMTRAX) 285
00 Index and foreword
Table of contents
PC170LC-10 00-7
Failure code [DA20MC] Pump Controller Malfunction 287
Failure code [DA22KK] Pump Solenoid Power Low Error 288
Failure code [DA25KP] 5V Sensor 1 Power Abnormality 290
Failure code [DA29KQ] Model Selection Abnormality 293
Failure code [DA2LKA] System Operating Lamp Disconnection (Pump Con) 295
Failure code [DA2LKB] System Operating Lamp Short Circuit (Pump Con) 297
Failure code [DA2QKR] CAN2 Discon (Pump Con) 298
Failure code [DA2RKR] CAN1 Discon (Pump Con) 300
Failure code [DAF0MB] Monitor ROM Abnormality 301
Failure code [DAF0MC] Monitor Error 302
Failure code [DAF8KB] Camera Power Supply Short Circuit 303
Failure code [DAF9KQ] Model Selection Abnormality 305
Failure code [DAFGMC] GPS Module Error 306
Failure code [DAFLKA] Operating Lamp Open Circuit (Monitor) 307
Failure code [DAFLKB] System Operating Lamp Short Circuit (Monitor) 309
Failure code [DAFQKR] CAN2 Discon (Monitor) 310
Failure code [DAZ9KQ] A/C Model Selection Abnormality 311
Failure code [DAZQKR] CAN2 Discon (Aircon ECU) 312
Failure code [DB2QKR] CAN2 Discon (Engine Con) 316
Failure code [DB2RKR] CAN1 Discon (Engine Con) 320
Failure code [DGH2KB] Hyd Oil Sensor Short Circuit 324
Failure code [DHA4KA] Air Cleaner Clogging Sensor Open Circuit 326
Failure code [DHPAMA] F Pump Press Sensor Abnormality 328
Failure code [DHPBMA] R Pump Press Sensor Abnormality 330
Failure code [DHS3MA] Arm Curl PPC Press Sensor Abnormality 332
Failure code [DHS4MA] Bucket Curl PPC Press Sensor Abnormality 334
Failure code [DHS8MA] Boom Raise PPC Press Sensor Abnormality 336
Failure code [DHS9MA] Boom Lower PPC Press Sensor Abnormality 338
Failure code [DHSAMA] Swing RH PPC Press Sensor Abnormality 340
Failure code [DHSBMA] Swing LH PPC Press Sensor Abnormality 342
Failure code [DHSCMA] Arm Dump PPC Press Sensor Abnormality 344
Failure code [DHSDMA] Bucket Dump PPC Press Sensor Abnormality 346
Failure code [DKR0MA] Pump Swash Plate Sensor Abnormality 348
Failure code [DR21KX] Camera 2 Picture Rev Drive Abnormality 350
Failure code [DR31KX] Camera 3 Picture Rev Drive Abnormality 352
Failure code [DV20KB] Travel Alarm Short Circuit 353
Failure code [DW43KA] Travel Speed Sol Open Circuit 355
Failure code [DW43KB] Travel Speed Sol Short Circuit 357
Failure code [DW45KA] Swing Brake Sol Open Circuit 359
Failure code [DW45KB] Swing Brake Sol Short Circuit 362
Failure code [DW91KA] Travel Junction Sol Open Circuit 364
Failure code [DW91KB] Travel Junction Sol Short Circuit 366
Failure code [DWA2KA] Attachment Sol Open Circuit 368
Failure code [DWA2KB] Attachment Sol Short Circuit 370
Failure code [DWJ0KA] Merge-divider Sol Open Circuit 372
Failure code [DWJ0KB] Merge-divider Sol Short Circuit 374
Failure code [DWK0KA] 2-Stage Relief Sol Open Circuit 376
Failure code [DWK0KB] 2-Stage Relief Sol Short Circuit 378
Failure code [DXA8KA] PC-EPC Sol Open Circuit 380
Failure code [DXA8KB] PC-EPC Sol Short Circuit 382
Failure code [DXE4KA] Attachment Flow EPC Open Circuit 384
Failure code [DXE4KB] Attachment Flow EPC Short Circuit) 386
Failure code [DY20KA] Wiper Working Abnormality 387
Failure code [DY20MA] Wiper Parking Abnormality 389
00 Index and foreword
Table of contents
00-8 PC170LC-10
Failure code [DY2CKB] Washer Drive Short Circuit 391
Failure code [DY2DKB] Wiper Drive (Fwd) Short Circuit 393
Failure code [DY2EKB] Wiper Drive (Rev) Short Circuit 395
Troubleshooting of electrical system (E-mode) 397
E-1 Engine does not start (Engine does not crank) 397
E-2 Manual preheating system does not work 403
E-3 Automatic preheating system does not work 406
E-4 While preheating is working, preheating monitor does not light up 408
E-5 When starting switch is turned to ON position, machine monitor displays nothing 410
E-6 While starting switch is turned to ON position (with engine stopped), engine oil level monitor lights up
in yellow 413
E-7 While starting switch is turned to ON position (with engine stopped), radiator coolant level monitor
lights up in yellow 414
E-8 Engine coolant temperature monitor lights up in red while engine is running 415
E-9 Hydraulic oil temperature monitor lights up in red while engine is running 416
E-10 Charge level monitor lights up in red while engine is running 417
E-11 Fuel level monitor lights up in red while engine is running 418
E-12 Air cleaner clogging monitor lights up in yellow while engine is running 419
E-13 Water separator monitor lights up in red while engine is running 420
E-14 Engine coolant temperature monitor lights up in red while engine is running 421
E-15 Hydraulic oil temperature monitor lights up in red while engine is running 422
E-16 Engine oil pressure monitor lights up in red while engine is running 423
E-17 Fuel gauge display does not move from minimum or maximum 424
E-18 Fuel gauge indicates incorrect amount (indicates neither full nor empty) 425
E-19 Engine coolant temperature gauge display does not move from minimum or maximum 426
E-20 Engine coolant temperature gauge indicates incorrect temperature (indicates neither full nor empty)
427
E-21 Hydraulic oil temperature gauge does not move from minimum or maximum 428
E-22 Hydraulic oil temperature gauge indicates incorrect temperature (indicates neither full nor empty)
430
E-23 Contents of display on machine monitor is different from actual machine condition 431
E-24 Some areas of machine monitor screen are not displayed 432
E-25 Function switch does not work 433
E-26 Automatic warm-up system does not operate (in cold season) 434
E-27 Auto-deceleration monitor does not light up, or does not go out, while auto-deceleration switch is
operated 435
E-28 Auto-deceleration function does not operate or is not canceled while lever is operated 436
E-29 Working mode selection screen is not displayed while working mode selector switch is operated
437
E-30 Setting of engine and hydraulic pump is not changed while working mode is changed 438
E-31 Travel speed monitor does not change when travel speed switch is operated 439
E-32 Travel speed does not change while travel speed selection is changed 440
E-33 Alarm buzzer does not stop sounding 441
E-34 Service meter is not displayed, while starting switch is in OFF position 442
E-35 Service mode cannot be selected 443
E-36 Any of work equipment, swing and travel does not work 444
E-37 Any of work equipment, swing and travel cannot be locked 446
E-38 Upper structure does not swing while swing parking brake cancel switch is set to CANCEL position
448
E-39 Swing brake does not operate while swing parking brake cancel switch is set to NORMAL position 450
E-40 One-touch power maximizing function does not operate, or indicator is not displayed on monitor 452
E-41 One-touch power maximizing function cannot be canceled 454
E-42 Alarm does not sound during travel 455
00 Index and foreword
Table of contents
PC170LC-10 00-9
E-43 Alarm does not stop sounding while machine is stopped 456
E-44 Horn does not sound 457
E-45 Horn does not stop sounding 459
E-46 Wiper monitor does not light up, or does not go out, while wiper switch is operated 461
E-47 Wiper does not operate while wiper switch is operated 462
E-48 Window washer does not operate while window washer switch is operated 464
E-49 Boom LOWER is not displayed correctly with monitoring function 465
E-50 Arm OUT is not displayed correctly with monitoring function 466
E-51 Arm IN is not displayed correctly with monitoring function 467
E-52 Boom RAISE is not displayed correctly with monitoring function 468
E-53 Bucket CURL is not displayed correctly with monitoring function 469
E-54 Bucket DUMP is not displayed correctly with monitoring function 470
E-55 Swing is not displayed correctly with monitoring function 471
E-56 Travel is not displayed correctly with monitoring function 472
E-57 Service is not displayed correctly with monitoring function 474
E-58 Attachment hydraulic circuit cannot be changed 476
E-59 KOMTRAX system does not operate normally 477
Troubleshooting of hydraulic and mechanical system (H-mode) 478
Information described in troubleshooting table (H-mode) 478
Failure mode and cause table 481
H-1 All of work equipments, swing and travel operations lack speed or power 485
H-2 Engine speed drops significantly or engine stalls 487
H-3 All work equipment, swing and travel does not work 488
H-4 Unusual sound is heard from around hydraulic pump 489
H-5 Fine control performance or response is poor 490
H-6 Boom speed or power is low 491
H-7 Arm speed or power is low 494
H-8 Bucket speed or power is low 497
H-9 Work equipment does not move in single operation 499
H-10 Hydraulic drift of boom is large 500
H-11 Hydraulic drift of arm is large 501
H-12 Hydraulic drift of bucket is large 502
H-13 Time lag of work equipment is large 503
H-14 When part of work equipment is relieved singly, other parts of work equipment move 505
H-14 When part of work equipment is relieved singly, other parts of work equipment move 505
H-16 In combined operation of work equipment, equipment having heavier load moves slower 507
H-17 In combined operations of swing and boom RAISE, boom rising speed is low 508
H-18 In combined operation of swing and travel, travel speed drops largely 509
H-19 Machine does not travel straight 510
H-20 Travel speed is slow 512
H-21 Machine is hard to steer or travel power is low 514
H-22 Travel speed does not change, or travel speed is too slow or fast 517
H-23 One of tracks does not run 518
H-24 Upper structure does not swing to the right or left 520
H-25 Upper structure swing only to the right or left 521
H-26 Swing acceleration or swing speed is low in both directions (right and left) 522
H-27 Swing acceleration performance is poor or swing speed is slow in only one direction 523
H-28 Upper structure overruns excessively when it stops swinging (both right and left) 524
H-29 Upper structure overruns excessively when it stops swinging (either right or left) 525
H-30 Shock is large when upper structure stops swinging 526
H-31 Large unusual noise is heard when upper structure stops swinging 527
H-32 Swing drift on a slope is large while swing parking brake is applied 528
H-33 Swing drift on a slope is large while swing parking brake is released 529
00 Index and foreword
Table of contents
00-10 PC170LC-10
H-34 Attachment hydraulic circuit cannot be changed while attachment is installed 530
H-35 Oil flow in attachment circuit cannot be controlled 531
Troubleshooting of engine (S-mode) 532
Information mentioned in troubleshooting table (S mode) 532
S-1 Engine does not crank when starting switch is turned to START position 533
S-2 Engine cranks but no exhaust smoke comes out 534
S-3 Fuel is being injected but engine does not start (misfiring: engine cranks but does not start) 535
S-4 Engine startability is poor 536
S-5 Engine does not pick up smoothly 538
S-6 Engine stops during operation 540
S-7 Engine runs rough or is unstable 542
S-8 Engine lacks power 543
S-9 Exhaust smoke is black 545
S-10 Engine oil consumption is excessive 547
S-11 Oil becomes contaminated quickly 548
S-12 Fuel consumption is excessive 549
S-13 Oil is in coolant (or coolant spurts or coolant level goes down) 550
S-14 Oil pressure drops 551
S-15 Fuel mixes into engine oil 552
S-16 Water mixes into engine oil (milky) 553
S-17 Coolant temperature rises too high (overheating) 554
S-18 Unusual noise is heard 555
S-19 Vibration is excessive 556
S-20 Air cannot be bled from fuel circuit 557
50 Disassembly and assembly
Contents 2
Related information on disassembly and assembly 4
How to read this manual 4
Coating materials list 6
Special tools list 10
Sketches of special tools 15
Engine and cooling system 19
Removal and installation of supply pump assembly 19
Removal and installation of injector assembly 23
Removal and installation of cylinder head assembly 29
Removal and installation of radiator assembly 47
Removal and installation of hydraulic oil cooler assembly 49
Removal and installation of aftercooler assembly 52
Removal and installation of engine and main pump assembly 54
Removal and installation of engine front oil seal 61
Removal and installation of engine rear oil seal 65
Removal and installation of fuel cooler assembly 68
Removal and installation of fuel tank assembly 70
Removal and installation of engine hood assembly 72
Removal and installation of KDOC assembly 74
Removal and installation of KCCV assembly 76
Removal and installation of air cleaner assembly 81
Power train 83
Removal and installation of travel motor and final drive assembly 83
Disassembly and assembly of final drive assembly 84
Removal and installation of swing motor and swing machinery assembly 93
00 Index and foreword
Table of contents
PC170LC-10 00-11
Disassembly and assembly of swing machinery assembly 95
Removal and installation of swing circle assembly 102
Undercarriage and frame 103
Removal and installation of sprocket 105
Removal and installation of idler and idler cushion assembly 106
Disassembly and assembly of idler assembly 107
Disassembly and assembly of idler cushion assembly 110
Disassembly and assembly of track roller assembly 112
Disassembly and assembly of carrier roller assembly 114
Removal and installation of revolving frame assembly 117
Removal and installation of counterweight assembly 119
Hydraulic system 121
Removal and installation of center swivel joint assembly 121
Disassembly and assembly of center swivel joint assembly 124
Removal and installation of hydraulic tank assembly 125
Removal and installation of main pump assembly 129
Removal and installation of main pump input shaft oil seal 132
Removal and installation of control valve assembly 133
Disassembly and assembly of control valve assembly 137
Disassembly and assembly of work equipment PPC valve assembly 139
Disassembly and assembly of travel PPC valve assembly 141
Work equipment 143
Removal and installation of work equipment assembly ( 1-piece boom) 143
Removal and installation of work equipment assembly (2-piece boom) 146
Removal and installation of 1st boom assembly 150
Removal and installation of 2nd boom 154
Removal and installation of arm 156
Disassembly and assembly of work equipment cylinder assembly 158
Cab and its attachments 164
Removal and installation of operator’s cab assembly 164
Removal and installation of operator cab glass (adhered glass) 169
Removal and installation of front window assembly 179
Removal and installation of floor frame assembly 185
Removal and installation of air conditioner unit assembly 190
Removal and installation of operator’s seat 194
Removal and installation of seat belt 196
Removal and installation of front wiper assembly 197
Electrical system 204
Removal and installation of air conditioner compressor assembly 204
Removal and installation of air conditioner condenser assembly 206
Removal and installation of engine controller assembly 208
Removal and installation of pump controller assembly 210
Removal and installation of machine monitor assembly 213
Removal and installation of pump swash plate sensor 215
Removal and installation of mass air flow and temperature sensor 216
Removal and installation of KOMTRAX terminal assembly 217
60 Maintenance standard
Contents 2
Engine and cooling system 3
Engine mount 3
Cooling system 4
00 Index and foreword
Table of contents
00-12 PC170LC-10
Power train 5
Swing circle 5
Swing machinery 6
Final drive 7
Sprocket 9
Undercarriage and frame 11
Track frame and idler cushion 11
Idler 13
Track roller 15
Carrier roller 16
Track shoe 17
Triple grouser shoe 20
Hydraulic system 21
Hydraulic tank 21
Main pump 22
Control valve 25
Travel motor 36
Work equipment and swing PPC valve 39
Travel PPC valve 42
1st-line attachment PPC valve (with EPC valve) 45
2-piece boom PPC valve 48
Solenoid valve 50
Attachment circuit selector valve (for high-pressure circuit) 51
Attachment circuit selector valve (for low-pressure circuit) 52
Center swivel joint 53
Work equipment 54
Work equipment 54
Boom cylinder 63
Arm cylinder 64
Bucket cylinder 65
80 Appendix
Table of contents 2
Air conditioner components 3
Precautions for refrigerant 3
Air conditioner component 4
Configuration and function of refrigeration cycle 7
Outline of refrigeration cycle 8
Air conditioner unit 10
Dual pressure switch 17
Air conditioner controller 18
Compressor 19
Air conditioner condenser 20
Sunlight sensor 22
Outer temperature sensor (outside air temperature sensor) 23
Procedure for testing and troubleshooting 24
Circuit diagram and arrangement of connector pins 26
System diagram 28
Input and output signals of the air conditioner controller 29
Parts and connectors layout 31
Testing air leakage 35
Testing with self-diagnosis function 38
00 Index and foreword
Table of contents
PC170LC-10 00-13
Testing vent (mode) changeover 41
Testing FRESH/RECIRC air changeover 43
Testing sunlight sensor 44
Testing (dual) pressure switch for refrigerant 45
Testing relays 46
Troubleshooting chart 1 47
Troubleshooting chart 2 48
Information in troubleshooting table 51
Failure code list related to air conditioner 52
Failure code [879AKA] A/C Inner Sensor Open Circuit 53
Failure code [879AKB] A/C Inner Sensor Short Circuit 54
Failure code [879BKA] A/C Outer sensor Open Circuit 55
Failure code [879BKB] A/C Outer sensor Short Circuit 57
Failure code [879CKA] Ventilating Sensor Open Circuit 59
Failure code [879CKB] Ventilating Sensor Short Circuit 60
Failure code [879DKZ] Sunlight sensor Open or Short Circuit 61
Failure code [879EMC] Ventilation Damper Abnormality 63
Failure code [879FMC] Air Mix Damper Abnormality 64
Failure code [879GKX] Refrigerant Abnormality 65
A-1 Troubleshooting for power supply system (Air conditioner does not operate) 66
A-2 Troubleshooting for compressor and refrigerant system (Air is not cooled) 68
A-3 Troubleshooting for blower motor system (No air comes out or air flow is abnormal) 71
A-4 Troubleshooting for FRESH/RECIRC air changeover 73
Troubleshooting with gauge pressure 75
Connection of service tool 78
Precautions for disconnecting and connecting air conditioner piping 80
Handling of compressor oil 82
Desiccant replacement 84
90 Diagrams and drawings
Hydraulic circuit diagram 3
Symbols in hydraulic circuit diagram 3
Hydraulic circuit diagram (1/2) 7
Hydraulic circuit diagram (2/2) 9
Electric circuit diagram 11
Symbols in hydraulic circuit diagram 3
Electrical circuit diagram (1/7) 15
Electrical circuit diagram (2/7) 17
Electrical circuit diagram (3/7) 19
Electrical circuit diagram (4/7) 21
Electrical circuit diagram (5/7) 23
Electrical circuit diagram (6/7) 25
Electrical circuit diagram (7/7) 27

S.V 12/12/24