Komatsu PC158US-2 Hydraulic Excavator Shop Manual 10001 and up – PDF DOWNLOAD

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Komatsu PC158US-2 Hydraulic Excavator Shop Manual 10001 and up

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Komatsu PC158US-2 Hydraulic Excavator Shop Manual

Brands: Komatsu
Equipment Type: Hydraulic Excavator
Manuals Type: Shop Manual
Machine Model: PC158US-2
Serial Number: 10001 and up
Book Code: SEBM026504
Language: English
Pages: 521
File Format: Portable Document Format (PDF)

DESCRIPTION:

Komatsu PC158US-2 Hydraulic Excavator Shop Manual

FOREWORD:
GENERAL:

• This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity.
• This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following chapters; these chapters are further divided into the each main group of components.

STRUCTURE AND FUNCTION:
This section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting. In addition, this section may contain hydraulic circuit diagrams, electric circuit diagrams, and maintenance standards.
TESTING AND ADJUSTING:
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at completion of the checks and repairs. Troubleshooting charts correlating “Problems” with “Causes” are also included in this section.
DISASSEMBLY AND ASSEMBLY:
This section explains the procedures for removing, installing, disassembling and assembling each component, as well as precautions for them.
MAINTENANCE STANDARD:
This section gives the judgment standards for inspection of disassembled parts. The contents of this section may be described in STRUCTURE AND FUNCTION.
OTHERS:
This section mainly gives hydraulic circuit diagrams and electric circuit diagrams. In addition, this section may give the specifications of attachments and options together.

TABLE OF CONTENTS:

Komatsu PC158US-2 Hydraulic Excavator Shop Manual

COVER.....................................................................................................................................................  1
CONTENTS..................................................................................................................................................  2
01 GENERAL................................................................................................................................................ 26
	SPECIFICATION DIMENSION DRAWINGS...................................................................................................................... 27
	SPECIFICATIONS........................................................................................................................................ 29
	WEIGHT TABLE.......................................................................................................................................... 32
	LIST OF LUBRICANTS AND WATER.......................................................................................................................... 34
10 STRUCTURE AND FUNCTION................................................................................................................................. 36
	PTO................................................................................................................................................... 37
	RADIATOR AND OIL COOLER............................................................................................................................... 38
	POWER TRAIN........................................................................................................................................... 40
	SWING CIRCLE.......................................................................................................................................... 41
	SWING MACHINERY....................................................................................................................................... 42
	FINAL DRIVE........................................................................................................................................... 43
	TRACK FRAME・RECOIL SPRING............................................................................................................................. 44
	HYDRAULIC COMPONENT LAYOUT............................................................................................................................ 45
	VALVE CONTROL......................................................................................................................................... 47
	HYDRAULIC TANK AND FILTER............................................................................................................................. 49
	HYDRAULIC PUMP (PISTON PUMP).......................................................................................................................... 50
	PC-EPC VALVE.......................................................................................................................................... 71
	CONTROL VALVE......................................................................................................................................... 74
	CLSS.................................................................................................................................................. 84
	SELF PRESSURE REDUCING VALVE..........................................................................................................................121
	CENTER SWIVEL JOINT...................................................................................................................................128
	TRAVEL MOTOR..........................................................................................................................................129
	SWING MOTOR...........................................................................................................................................137
	SOLENOIL VALVE........................................................................................................................................144
	PPC ACCUMULATOR.......................................................................................................................................146
	ACCUMULATOR FOR BREAKER...............................................................................................................................147
	PPC VALVE.............................................................................................................................................148
	WORK EQUIPMENT........................................................................................................................................159
	AIR CONDITIONER PIPING................................................................................................................................160
	ELECTRIC COMPONENT LAYOUT.............................................................................................................................161
	ENEGINE CONTROL.......................................................................................................................................165
	ELECTRIC CONTROL SYSTEM...............................................................................................................................173
	MONITOR SYSTEM........................................................................................................................................189
20 TESTING ANS ADJUSTING..................................................................................................................................194
	STANDARD VALUE TABLE..................................................................................................................................195
		STANDARD VALUE TABLE FOR ENGINE...................................................................................................................195
		STANDARD VALUE TABLE FOR CHASSIS..................................................................................................................196
		STANDARD VALUE TABLE FOR ELECTRICAL PARTS.........................................................................................................204
	TESTING AND ADJUSTING.................................................................................................................................208
		TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING..................................................................................................209
		MEASURING ENGINE SPEED............................................................................................................................210
		MEASURING EXHAUST COLOR...........................................................................................................................211
		ADJUSTING VALVE CLEARANCE.........................................................................................................................212
		MEASURING BLOW-BY PRESSURE........................................................................................................................213
		MEASURING ENGINE OIL PRESSURE.....................................................................................................................214
		TESTING AND ADJUSTING FUEL INJECTION TIMEING......................................................................................................214
		TESTING AND ADJUSTING BELT TENSION FOR AIR CONDITIONER COMPRESSOR.................................................................................215
		ADJUSTING ENGINE SPEED SENSOR.....................................................................................................................215
		ADJUSTING FUEL CONTROL CABLE......................................................................................................................216
		ADJUSTING ENGINE STOP SOLENOLD LINKAGE INSPECTION.................................................................................................217
		TESTING CLEARANCE OF SWING CIRCLE BEARING.........................................................................................................218
		CHECKING WEAR OF SPROCKET.........................................................................................................................219
		INSPECTION AND ADJUSTMENT OF TRACK SHOE TENSION...................................................................................................220
		TESTING AND ADJUSTING HYDRAULIC PRESSURE IN WORK EQUIPMENT, SWING,TRAVEL CIRCUIT..................................................................221
		TESTING AND ADJUSTING OUTPUT PRESSURE OF PC VALVE (SERVO PISTON INPUT PRESSURE)...................................................................224
		TESTING AND ADJUSTING LS VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE) AND LS DIFFERENTIAL PRESSURE.........................................226
		TESTING AND ADJUSTING CONTROL CICUIT OIL PRESSURE.................................................................................................229
		TESTING SOLENIOD VALVE OUTPOUT PRESSURE...........................................................................................................230
		MEASURING PPC VALVE OUTPUT PRESSURE...............................................................................................................231
		ADJUSTING PPC VALVE...............................................................................................................................232
		TESTING AND ADJUSTING TRAVEL DEVIATION............................................................................................................233
		CHECKING LOCATION OF CAUSE OF HYDRAULIC DRIFT OF WORK EQUIPMENT...................................................................................234
		MEASURING OIL LEAKAGE OF SWING MOTOR..............................................................................................................235
		MEASURING OIL LEAKAGE OF TRAVEL MOTOR.............................................................................................................235
		BLEEDING AIR......................................................................................................................................236
		RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT.................................................................................................238
		RELEASING REMAINING PRESSURE IN HYDRAULIC TANK....................................................................................................238
		PROCEDURE FOR CHECKIG DIODE.......................................................................................................................239
		PM CLINIC INSPECTION TABLE........................................................................................................................240
	TROUBLESHOOTING.......................................................................................................................................242
		POINTS TO REMEMBER WHEN TROUBLESHOOTING...........................................................................................................243
		SEQUENCE OF EVENTS IN TROUBLESHOOING..............................................................................................................244
		POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE..................................................................................................245
		CHECEKS BEFORE TROUBLESHOOTING....................................................................................................................253
		CONNECTOR TYPES AND MOUNTING LOCATIONS............................................................................................................254
		CONNECTOR ARRANGEMENT DIAGRAM.....................................................................................................................256
		CONNECTION TABLE FOR CONNECTOR PIN NUMBERS........................................................................................................259
		T-BRANCH BOX AND T-BRANCH TABLE...................................................................................................................281
		METHOD OF USING TROUBLESHOOTING CHARTS............................................................................................................283
		JUDGEMENT TABLE FOR ELECTRICAL SYSTEM, HYDRAULIC AND MECHANICAL SYSTEM............................................................................285
		TROUBLESHOTING OF CONTROLLER, ELECTRICAL SYSTEM...................................................................................................288
			RELATED ELECTRICAL CIRCUIT DIAGRMS FOR ELECTRICAL SYSTEM......................................................................................289
			E-1 ABNORMALITY IN PC-EPC SYSTEM..............................................................................................................292
				a) SPEEDS OF ALL WORK EQUIPMENT, TRAVEL, SWING ARE SLOW OR LACK POWER.....................................................................293
				b) TEERE IS EXCESSIVE DROP IN ENGINE SPEED, OR ENGINE STALLS..............................................................................294
			E-2 ABNORMALITY IN PPC LOCK SOLENOID SYSTEM...................................................................................................296
				a) EVEN WHEN SAFETY LOCK LEVER IS SET TO FREE, NO WORK EQUIPMENT, TRAVEL, SWING MOVE......................................................296
				b) EVEN WHEN SAFETY LOCK LEVER IS SET TO LOCK, WORK EQUIPMENT, TRAVEL, SWING MOVE.........................................................296
			E-3 ABNORMALITY IN SWING LOCK SOLENOID SYSTEM.................................................................................................298
				a) EVEN WHEN SWING LOCK SWITCH IS TURNED OFF, UPPWE STRUCTURE DOSE NOT SWING..............................................................298
				b) EVEN WHEN SWING LOCK SWITCH IS TURNED TO LOCK, UPPER STRUCTURE SWINGS..................................................................299
			E-4 ABNORMALTY TRAVEL SPEED SOLENOID SYSTEM...................................................................................................300
				a) EVEN WHEN TRAVEL SPEED SELECTOR SWITCH IS TURNED TO HI, TRAVEL SPEED DOES NOT CHANGE TO HIGH SPEED.....................................300
				b) EVEN WHEN TRAVEL SPEED SELECTOR SWITCH IS TURNED TO LO, TRACEL SPEED DOES NOT CHANGE TO LOW SPEED......................................301
			E-5 DEFECTIVE RUNNING SPEED AUTO SPEED CHANGE SYSTEM..........................................................................................302
				a) MAIN PUMP PRESSURE SENSOR SYSTEM.......................................................................................................302
				b) ENGINE ROTATION SENSOR SYSTEM..........................................................................................................302
			E-6 DEFECTIVE ENGINE STARTING SYSTEM TROUBLESHOOTING MODE.....................................................................................304
		TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM...................................................................................................308
			TABLE OF FAILURE MODES AND CAUSES.............................................................................................................309
			H-1 SPEEDS OF ALL WORK EQUIPMENT, TRAVEL, SWING ARE SLOW OR LACK POWER........................................................................311
			H-2 THERE IS EXCESSIVE DROP IN ENGINE SPEED, OR ENGINE STALLS.................................................................................312
			H-3 NO WORK EQUIPMENT, TRAVEK, SWING MIVE.....................................................................................................313
			H-4 ABNORMAIL NOISE GENERATED (AROND PUMP)....................................................................................................314
			H-5 FAIN CONTROL ABILITY IS POOR OR RESPONSE IS POOR..........................................................................................314
			H-6 BOOM IS SLOW OR LACKS POWER...............................................................................................................315
			H-7 ARM IS SLOW OR LACKS POWER ...............................................................................................................316
			H-8 BUCKET IS SLOW OR LACKS POWER.............................................................................................................316
			H-9 WORK EQUIPMENT (BOOM, ARM, BUCKET) DOES NOT MOVE..........................................................................................317
			H-10 EXCESSIVE HYDRAULIC DRIFT (BOOM,ARM, OR BUCKET)..........................................................................................317
			H-11 EXCESSIVE TIME LAG (ENGINE AT LOW IDLING)................................................................................................317
			H-12 WHEN WORK EQUIPMENT IS RELIEVED INDEPENDENTLY, OTHER WORK EQUIPMENT MOVES................................................................318
			H-13 IN COMPOUND OPERATIONS, WORK EQUIPMENT WITN LARGER LOAD IS SLOW..........................................................................318
			H-14 IN SWING + BOOM RAISE, BOOM RAISE IS SLOW................................................................................................319
			H-15 IN SWING OR WORK EQUIPMENT + TRAVEL, TRAVEL SPEED DROPS EXCESSIVELY......................................................................319
			H-16 TRAVEL DEVIATION.........................................................................................................................320
				a) DEVIATION IS EXCESSIVE DURING NORMAL TRAVEL............................................................................................320
				b) DEVIATION IS EXCESSIVE WHEN STARTING...................................................................................................320
			H-17 TRAVEL SPEED IS SLOW.....................................................................................................................321
			H-18 STEERING IS DIFFICULT TO TUEN OR LACKS POWER.............................................................................................322
			H-19 TRAVEL SPEED DOES NOT SWITCH.............................................................................................................324
			H-20 TRAVEL DOES DOES NOT MOVE (ONE SIDE ONLY)................................................................................................324
			H-21 UPPER STRUVTURE DOES NOT SWING...........................................................................................................325
				a) DOES NOT SWING IN EITHER DIRECTION (LIFT AND RIGHT)....................................................................................325
				b) DOES NOT SEING IN ONE DIRECTION ONLY (LEFT AND RIGHT)..................................................................................325
			H-22 SWING ACCELERATION IS POOR OR SWING SPEED IS SLOW........................................................................................326
				a) ACCELERATION IS POOR OR SWING SPEED IS SLOW (BOTH LEFT AND RIGHT)......................................................................326
				b) ACCELERATION IS POOR OR SWING SPEED IS SLOW (ONE DIRECTION ONLY).......................................................................326
			H-23 EXCESSIVE OVERRUN WHEN STOPPING SWING....................................................................................................327
				a) EXCESSIVE OVERRUN WHEN STOPPING SWING (BOTH LEFT AND RIGHT) (WHEN OPERATION OF CONTROL VALVE SPOOL, PPC CIRCUIT THROTTLE IS NORMAL)....327
				b) EXCESSIVE OVERRUN WHEN STOPPING SWING (ONE DIRECTION ONLY).............................................................................327
			H-24 EXCESSIVE SHOCK WHEN STOPPING SWING (ONE DIRECTION ONLY).................................................................................328
			H-25 EXCESSIVE ABNORMAL NOISE WHEN STOPPING SWING ............................................................................................328
			H-26 EXCESSIVE HYDRAULIC DRIFT OF SWING.......................................................................................................329
				a) WHEN SWING HOLDING BRAKE IS ACTUATED...................................................................................................329
				b) WHEN SWING HOLDING BRAKE IS RELEASED...................................................................................................329
		TROUBLESHOOTING OF MACHINE MONOTOR SYSTEM.........................................................................................................330
			ELECTRICAL CIRCUIT DIAGRAM FOR MONITOR SYSTEM.................................................................................................331
			M-1 NO DISPLAY APPEARS WHEN STARTING SWITCH IS TURNED ON......................................................................................332
			M-2 DISPLAY DOES NOT GO OUT AFTER COMPLETION OF SELF CHECK (ALL LAMPS LIGHT UP FOR 3 SECONDS) WHEN STARTING SWITCH IS TURNED ON...............333
			M-3 SOME ITEMS DO NOT LIGHT UP DURING DELF CHECK (ALL LAMPS LIGHT UP FOR 3 SECONDS) WHEN STARTING SWITCH IS TURNED ON.........................333
				a) NO GAUGES (FUEL LEVEL, ENGINE WATER TEMPERATURE) LIGTH UP PREHEATING PILOT LAMP DOES NOT LIGHT UP......................................333
				b) CAUTION LAMPS (ENGINE OIL PRESSURE, BATTERLY CHARGE) DO NOT LIGTH UP...................................................................333
			M-4 CHARGE CAUTION LAMP DOES NOT LIGHT UP WHENSTARTING SWITCH IS TURNED ON (BEFORE STARTING ENGINE)...........................................334
			M-5 ENGINE OIL PRESSURE CAUTION LAMP DOES NOT LIGHT UP WHEN STARTING SWITCH IS TURNED ON (BEFORE STARTING ENGINE).............................335
			M-6 PRSHEATING PILOT LAMP DOES NOT LIGHT UP WHEN STARTING SWITCH IS AT HEAT...................................................................336
			M-7 ENGINE OIL PRESSURE CAUTION LAMP LIGHTS UP WHEN WNGINE IS RUNNING.........................................................................337
			M-8 CHARGE CAUTION LAMP LIGHTS UP WHEN ENGINE IS RUNNING......................................................................................338
			M-9 ABNORMALITY IN ENGINE WATER TEMPERATURE GAUGE.............................................................................................339
				a) AFTER ENGINE IS STARTED, TEMPERATURE REMAINS AT BLTTOM LEVEL AND DOES NOT MOVE.........................................................339
				b) AFTER ENGINE IS STARTED, TEMPERATURE IMMEDIATELY GOES UP (THERE IS NO OVERHEATING BUT GAUGE ENTERS RED RANGE)..........................339
			M-10 ABNORMALITY IN FUEL GAUGE................................................................................................................340
				a) NO SEGMENTS ON FUEL GAUGE LIGHT UP.....................................................................................................340
				b) FUEL LEVEL HAS GONE BUT FUEL GAUGE REMAINS AT FULL TANK DISPLAY........................................................................340
				c) EVEN WHEN TANK IS FILLED, FUEL GAUGE DOES NOT GIVE FULL TANK DISPLAY...................................................................341
			M-11 DEFECTIVE OPERATION OF ALARM BUZZER......................................................................................................342
				a) BUZZER DOES NOT SOUND..................................................................................................................342
				b) BUZZER CONTINUES TO SOUND AND DOES NOT STOP............................................................................................342
			M-12 SERVICE METER DOES NOT ADVANCE WHEN ENGINE IS RUNNING....................................................................................343
				a) WHEN BATTERY CHARGE CAUTION LAMP DOES LIGHT UP.........................................................................................343
				b) WHEN BATTERY CHARGE CAUTION LAMP LIGHTS UP.............................................................................................343
			M-13 NIGHT LIGHTING DOES NOT LIGHT UP.........................................................................................................344
				a) GAUGE LIGHTING DOES NOT LIGHT UP.......................................................................................................344
				b) SERVICE METER LIGHTING DOES NOT LIGHT UP...............................................................................................344
			M-14 HEATER DOES NOT WORK.....................................................................................................................345
				a) NEITHER HI NOR LO WORK.................................................................................................................345
				b) ONLY LO DOES NOT WORK..................................................................................................................345
				c) ONLY HI DOES NOT WORK..................................................................................................................345
		TROUBLESHOOTING OF ENGINE (S MODE)................................................................................................................347
			MERHOD OF USING TROUBLESHOOTING CHARTS........................................................................................................348
			S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME).................................................................................352
			S-2 ENGINE DOES NOT START.....................................................................................................................354
				(1) ENGINE DOES NOT TURN..................................................................................................................354
				(2) ENGINE TURN BUT NO EXHAUST SMOKE COMES OUT (FUEL IS NOT BEING INJECTED)...............................................................355
				(3) EXHAUST SMOKE COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)............................................................356
			S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW-UP IS POOR)......................................................................................357
			S-4 ENGINE STOPS DURING OPERATIONS............................................................................................................358
			S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING).................................................................................................359
			S-6 ENGINE LACKS OUTPUT (OR LACKS POWER) .....................................................................................................360
			S-7 EXHAUST SMOKE IS BLACK (INCOMPLETE COMBUSTION)............................................................................................361
			S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE)...................................................................................362
			S-9 OIL BECOMES CONTAMINATED QUICKLY..........................................................................................................363
			S-10 FUEL CONSUMPTION IS EXCESSIVE............................................................................................................364
			S-11 OIL IS IN COOLING WATER, OR WATER SPURTS BACK, OR WATER LEVEL GOES DOWN..................................................................365
			S-12 OIL PRESSURE CAUTION LAMP LIGHTS UP (DROP IN OIL PRESSURE)...............................................................................366
			S-13 OIL LEVEL RISES (WATER, FUEL IN OIL).....................................................................................................367
			S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING).........................................................................................368
			S-15 ABNORMAL NOISE IS MADE...................................................................................................................369
			S-16 VIBRATION IS EXCESSIVE...................................................................................................................370
30 DISASSEMBLY AND ASSEMBLY...............................................................................................................................371
	METHOD OF USING MANUAL................................................................................................................................373
	PRECAUTIONS WHEN CARRYING OUT OPERATION...............................................................................................................374
	SPECIAL TOOL LIST.....................................................................................................................................376
	SKETCHES OF SPECIAL TOOL..............................................................................................................................379
	ENGINE, MAIN PUMP.....................................................................................................................................380
		REMOVAL...........................................................................................................................................380
		INSTALLATION......................................................................................................................................381
	REDIATOR, HYDRAULIC OIL COOLER........................................................................................................................382
		REMOVAL...........................................................................................................................................382
		INSTALLATION......................................................................................................................................383
	FUEL TANK.............................................................................................................................................384
		REMOVAL AND INSTALLATION..........................................................................................................................384
	CENTER SWIVEL JOINT...................................................................................................................................385
		REMOVAL AND INSTALLATION..........................................................................................................................385
		DISASSEMBLY AND ASSEMBLY..........................................................................................................................386
	FINAL DRIVE, TRAVEL MOTOR.............................................................................................................................387
		REMOVAL AND INSTALLATION..........................................................................................................................387
	FINAL DRIVE...........................................................................................................................................388
		DISASSEMBLY.......................................................................................................................................388
		ASSEMBLY..........................................................................................................................................391
	SWING MOTOR, SWING MACHINERY..........................................................................................................................397
		REMOVAL AND INSTALLATION..........................................................................................................................397
	SWING MACHINERY.......................................................................................................................................398
		DISASSEMBLY.......................................................................................................................................398
		ASSEMBLY..........................................................................................................................................401
	REVOLVIND FRAME.......................................................................................................................................405
		REMVOAL...........................................................................................................................................405
		INSTALLATION......................................................................................................................................406
	SWING CIRCLE..........................................................................................................................................407
		REMOVAL AND INSTALATION...........................................................................................................................407
	RECOIL SPRING.........................................................................................................................................408
		DISASSEMBLY.......................................................................................................................................408
		ASSEMBLY..........................................................................................................................................409
	IDLER.................................................................................................................................................410
		ASSEMBLY..........................................................................................................................................410
	TRACK ROLLER..........................................................................................................................................412
		ASSEMBLY..........................................................................................................................................412
	TRACK SHOE............................................................................................................................................414
		REMOVAL AND INSTALLATION..........................................................................................................................414
	HYDRAULIC TANK........................................................................................................................................415
		REMOVAL...........................................................................................................................................415
		INSTALLATION......................................................................................................................................416
	MAIN PUMP.............................................................................................................................................417
		REMOVAL...........................................................................................................................................417
		INSTALLATION......................................................................................................................................418
	CONTROL VALVE.........................................................................................................................................419
		REMOVAL...........................................................................................................................................419
		INSTALLATION......................................................................................................................................420
		DISASSEMBLY.......................................................................................................................................421
		ASSEMBLY..........................................................................................................................................426
	LS SELECTION VALVE....................................................................................................................................431
		DISASSEMBLY AND ASSEMBLY..........................................................................................................................431
	PRESSURE COMPENSATION VALVE...........................................................................................................................432
		DISASSEMBLY.......................................................................................................................................432
		ASSEMBLY..........................................................................................................................................434
	MIAN RELIEF VALVE.....................................................................................................................................436
		DISASSEMBLY.......................................................................................................................................436
		ASSEMBLY..........................................................................................................................................437
	WORK EQUIPMENT PPC VALVE (FOE BOOM, BUCKET, ARM, SWING CONTROL).......................................................................................438
		DISADDEMBLY.......................................................................................................................................438
		ASSEMBLY..........................................................................................................................................439
	TRAVEL PPC VALVE......................................................................................................................................440
		DISASSEMBLY.......................................................................................................................................440
		ASSEMBLY..........................................................................................................................................441
	HYDRAULIC CYLINDER....................................................................................................................................442
		DISASSEMBLY.......................................................................................................................................442
		ASSEMBLY..........................................................................................................................................445
	WORK EQUIPMENT........................................................................................................................................449
		REMOVAL...........................................................................................................................................449
		INSTALLATION......................................................................................................................................450
	OPERATOR CAB..........................................................................................................................................451
		REMOVAL...........................................................................................................................................451
		INSTALLATION......................................................................................................................................452
	OPERATOR'S CAB GLASS (STUCK GLASS)....................................................................................................................453
		REMOVAL...........................................................................................................................................454
		INSTALLATION......................................................................................................................................455
	FRONT WINDOW..........................................................................................................................................465
		REMVOAL AND INSTALLATION..........................................................................................................................465
	FLOOR FRAME...........................................................................................................................................466
		REMOVAL...........................................................................................................................................466
		INSTALLATION......................................................................................................................................467
	AIRCONDITIONER COMPRESSOR.............................................................................................................................468
		REMOVAL AND INSTALLATION..........................................................................................................................468
	AIRCONDITIONER CONDENSER..............................................................................................................................469
		REMOVAL AND INSTALLATION..........................................................................................................................469
	AIRCONDITIONER UNIT...................................................................................................................................470
		REMOVAL...........................................................................................................................................470
		INSTALLATION......................................................................................................................................471
	COUNTERWEIGHT.........................................................................................................................................472
		REMOVAL AND INSTALLATION..........................................................................................................................472
40 MAINTENANCE STANDARD...................................................................................................................................473
	SWING MACHINERY.......................................................................................................................................474
	FINAL DRIVE...........................................................................................................................................476
	SWING CIRCLE..........................................................................................................................................478
	TRACK FRAME, RECOIL SPRING............................................................................................................................479
	IDLER.................................................................................................................................................480
	CARRIER ROLLER .......................................................................................................................................482
	TRACK ROLLER..........................................................................................................................................484
	SPRICKET..............................................................................................................................................486
	TRACK SHOE............................................................................................................................................487
	HYDRAULIC PUMP........................................................................................................................................491
	PC-EPC VALVE..........................................................................................................................................492
	CONTROL VALVE.........................................................................................................................................493
	SELF PRESSURE REDUCTUIN VALVE.........................................................................................................................502
	TRAVEL MOTOR..........................................................................................................................................503
	SWING MOTOR...........................................................................................................................................504
	SOLENOID VALVE........................................................................................................................................505
	CENTER SWIVEL JOINT...................................................................................................................................506
	PPC VALVE.............................................................................................................................................507
	HYDRAULIC CYLINDER....................................................................................................................................510
	WORK EQUIPMENT........................................................................................................................................512
	DIMENSION OF WORK EQUIPMENT...........................................................................................................................514
90 OTHERS.................................................................................................................................................518
	HYDRAULIC CIRCUIT DIAGRAM.............................................................................................................................519
	ELECTRIC CIRCUIT DIAGRAM (1/2)........................................................................................................................520
	ELECTRIC CIRCUIT DIAGRAM (2/2)........................................................................................................................521

KOMATSU PC158US-2 HYDRAULIC EXCAVATOR SHOP MANUAL 10001 AND UP – PDF DOWNLOAD:

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