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Komatsu PC88MR-8 Hydraulic Excavator Shop Manual SEN04329-11 – PDF DOWNLOAD

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Komatsu PC88MR-8 Hydraulic Excavator Shop Manual

SERIAL NUMBERS 5001 and up

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Description

Komatsu PC88MR-8 Hydraulic Excavator Shop Manual

FILE DETAILS:

Komatsu PC88MR-8 Hydraulic Excavator Shop Manual 

Brands: Komatsu
Equipment Type: Hydraulic Excavator
Manuals Type: Shop Manual
Machine Model: PC88MR-8
Serial Number: 5001 and up
Book Code: SEN04329-11
Language: English
Pages: 1065
File Format: Portable Document Format (PDF)

DESCRIPTION:

Komatsu PC88MR-8 Hydraulic Excavator Shop Manual 

How to read the shop manual:

1. Composition of shop manual
This shop manual contains the necessary technical information for services performed in a workshop. For ease of understanding, the manual is divided into the following sections.
00. Index and foreword
This section contains the index, foreword, safety and basic information. If any revision is made, the LIST OF REVISED PAGES will be added.
01. Specification:
This section explains the specifications of the machine.
10. Structure and function:
This section explains the structure and function of each component. It 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:
This section explains the standard values for new machine and judgement criteria for testing, adjusting, and troubleshooting. This standard value table is used to check the standard values in testing and adjusting and to judge parts in troubleshooting.
30. Testing and adjusting:
This section explains measuring tools and measuring methods for testing and adjusting, as well as the adjusting method of each part. The standard values and judgment criteria for “Testing and adjusting” are
explained in “Standard value table”.
40. Troubleshooting:
This section explains how to find out failed parts and how to repair them. The troubleshooting is dividedby failure modes. The “S mode” of the troubleshooting related to the engine may be also explained in the
Chassis volume and Engine volume. In this case, see the Chassis volume.
50. Disassembly and assembly:
This section explains the special tools and procedures for removing, installing, disassembling, and assembling each component, as well as precautions for them. In addition, tightening torque, and quantity and
weight of coating material, oil, grease, and coolant necessary for the work are also explained.
60. Maintenance standard:
This section gives maintenance standard values of each component. The maintenance standard sub-section explains the criteria and remedies for disassembly and service.
80. Appendix:
This section explains the structure, function, testing, adjusting, and troubleshooting for the equipment not classifiable in other sections.
90. Diagrams and drawings (chassis volume) /Repair and replacement of parts (engine volume):

  •  Chassis volume
    This section gives hydraulic circuit diagrams and electrical circuit diagrams.
  •  Engine volume
    This section explains the method of remanufacturing and repairing engine and replacing parts.

TABLE OF CONTENTS:

Komatsu PC88MR-8 Hydraulic Excavator Shop Manual 

COVER
.......................................................................................................   1
00 Index and foreword........................................................................................   0
	100 Index................................................................................................   3
		Composition of shop manual...........................................................................   4
		Table of contents....................................................................................   6
	200 Foreword and general information.....................................................................  15
		Safety notice........................................................................................  16
		How to read the shop manual..........................................................................  21
		Explanation of terms for maintenance standard........................................................  23
		Handling of electric equipment and hydraulic component...............................................  25
		Handling of connectors newly used for engines........................................................  34
		How to read electric wire code.......................................................................  37
		Precautions when carrying out operation..............................................................  40
		Method of disassembling and connecting push-pull type coupler........................................  43
		Standard tightening torque table.....................................................................  46
		Conversion table.....................................................................................  50
01 Specification.............................................................................................   0
	100 Specification and technical data.....................................................................  57
		Specification dimension drawing......................................................................  58
		Working range diagram................................................................................  59
		Specifications.......................................................................................  60
		Weight table.........................................................................................  63
		Table of fuel, coolant and lubricants................................................................  65
10 Structure, function and maintenance standard..............................................................   0
	100 Engine and cooling system............................................................................  67
		Engine mount.........................................................................................  68
		PTO..................................................................................................  69
		Cooling system.......................................................................................  70
	200 Power train..........................................................................................  73
		Power train..........................................................................................  74
		Swing circle.........................................................................................  76
		Swing machinery......................................................................................  78
	300 Undercarriage and frame..............................................................................  81
		Track frame..........................................................................................  82
		Idler cushion........................................................................................  83
		Idler................................................................................................  84
		Track roller.........................................................................................  85
		Carrier roller.......................................................................................  86
		Sprocket.............................................................................................  87
		Track shoe...........................................................................................  88
	410 Hydraulic system, Part 1.............................................................................  95
		Hydraulic equipment layout drawing...................................................................  96
		Valve control........................................................................................  98
		Hydraulic tank and filter............................................................................ 100
		Hydraulic pump....................................................................................... 102
	420 Hydraulic system, Part 2............................................................................. 117
		Control valve........................................................................................ 119
		CLSS................................................................................................. 136
		Functions and operation by valve..................................................................... 140
	430 Hydraulic system, Part 3............................................................................. 171
		PPC valve............................................................................................ 173
		Swing motor.......................................................................................... 185
		Travel motor......................................................................................... 195
		Center swivel joint.................................................................................. 203
		Solenoid valve....................................................................................... 204
		PPC accumulator...................................................................................... 211
		Anti-drop valve...................................................................................... 214
		Multi-control valve.................................................................................. 219
	500 Work equipment....................................................................................... 221
		Work equipment....................................................................................... 222
		Dimensions of components............................................................................. 224
		Work equipment cylinder.............................................................................. 230
	600 Cab and its attachments.............................................................................. 235
		Air conditioner...................................................................................... 236
	700 Electrical system.................................................................................... 249
		Electrical control system............................................................................ 250
		Monitor system....................................................................................... 284
		KOMTRAX system....................................................................................... 298
		Sensor............................................................................................... 249
20 Standard value table......................................................................................   0
	100 Standard service value table......................................................................... 307
		Standard value table for engine related parts........................................................ 308
		Standard value table for chassis..................................................................... 309
30 Testing and adjusting.....................................................................................   0
	110 Testing and adjusting, Part 1........................................................................ 319
		Tools for testing, adjusting, and troubleshooting.................................................... 321
		Testing engine speed................................................................................. 326
		Testing exhaust temperature.......................................................................... 327
		Checking exhaust gas color........................................................................... 328
		Adjusting valve clearance............................................................................ 329
		Testing compression pressure......................................................................... 331
		Testing blow-by pressure............................................................................. 333
		Testing engine oil pressure.......................................................................... 334
		Handling fuel system parts........................................................................... 335
		Releasing residual pressure from fuel system......................................................... 335
		Testing fuel pressure................................................................................ 336
		Testing fuel return rate and fuel leakage............................................................ 337
		Bleeding air from fuel circuit....................................................................... 339
		Checking fuel circuit for leakage.................................................................... 341
		Testing and adjusting alternator belt tension........................................................ 342
		Checking and adjusting air conditioner compressor belt tension....................................... 344
		Testing swing circle bearing clearance............................................................... 345
		Checking and adjusting track shoe tension............................................................ 346
		Testing and adjusting oil pressure in work equipment and travel circuits............................. 348
		Testing and adjusting swing and blade circuit oil pressure........................................... 350
		Testing control circuit basic pressure............................................................... 353
		Testing and adjusting oil pressure in pump PC control circuit........................................ 354
		Testing PC-EPC solenoid output pressure.............................................................. 357
		Testing LS differential pressure and adjusting LS valve.............................................. 358
		Testing solenoid valve output pressure............................................................... 360
		Testing PPC valve output pressure.................................................................... 361
		Adjusting play of work equipment and swing PPC valves................................................ 363
		Checking parts which cause hydraulic drift of work equipment......................................... 364
		Testing and adjusting travel deviation............................................................... 366
		Releasing residual pressure from hydraulic circuit................................................... 368
		Testing oil leakage.................................................................................. 369
		Bleeding air from each part.......................................................................... 372
		Adjusting mirrors.................................................................................... 374
		Testing and adjusting hood catch..................................................................... 375
	120 Testing and adjusting, Part 2........................................................................ 379
		Special functions of machine monitor................................................................. 380
	130 Testing and adjusting, Part 3........................................................................ 431
		Handling voltage circuit of engine controller........................................................ 432
		Preparation work for troubleshooting of electrical system............................................ 433
		Procedure for testing diodes......................................................................... 438
		Pm Clinic service.................................................................................... 439
40 Troubleshooting...........................................................................................   0
	100 Failure code table and fuse locations................................................................ 445
		Failure code table................................................................................... 446
		Fuse locations....................................................................................... 449
	200 General information on troubleshooting............................................................... 453
		Points to remember when troubleshooting.............................................................. 454
		Sequence of events in troubleshooting................................................................ 455
		Checks before troubleshooting........................................................................ 456
		Classification and procedures for troubleshooting.................................................... 457
		Information in troubleshooting table................................................................. 458
		Phenomena looking like troubles and troubleshooting Nos.............................................. 460
		Connection table for connector pin numbers........................................................... 463
		T- branch box and T- branch adapter table............................................................ 499
	310 Troubleshooting by failure code, Part 1.............................................................. 503
		Failure code [989L00] Engine controller lock caution 1............................................... 505
		Failure code [989M00] Engine controller lock caution 2............................................... 506
		Failure code [989N00] Engine controller lock caution 3............................................... 507
		Failure code [AB00KE] Charge voltage low............................................................. 508
		Failure code [B@BAZG] Eng oil press. low............................................................. 511
		Failure code [B@BCNS] Eng coolant overheat........................................................... 512
		Failure code [B@HANS] Hydr. oil overheat............................................................. 512
		Failure code [CA111] ECM critical internal failure................................................... 513
		Failure code [CA115] Eng. Ne and Bkup speed sensor error............................................. 516
		Failure code [CA122] Charge air press sensor high error.............................................. 518
		Failure code [CA123] Charge air press sensor low error............................................... 520
		Failure code [CA131] Throttle sensor high error...................................................... 522
		Failure code [CA132] Throttle sensor low error....................................................... 524
		Failure code [CA144] Coolant temp. sensor high error................................................. 526
		Failure code [CA145] Coolant temp. sensor low error.................................................. 528
		Failure code [CA153] Charge air temp. sensor high error.............................................. 530
		Failure code [CA154] Charge air temp. sensor low error............................................... 532
		Failure code [CA187] Sensor sup. 2 volt. low error................................................... 533
		Failure code [CA221] Ambient air press. sensor high error............................................ 534
		Failure code [CA222] Ambient air press. sensor low error............................................. 536
		Failure code [CA227] Sensor sup. 2 volt. high error.................................................. 537
		Failure code [CA234] Eng. overspeed.................................................................. 538
		Failure code [CA238] Ne speed sensor sup. volt. error................................................ 540
		Failure code [CA271] IMV/PCV1 short error............................................................ 542
		Failure code [CA272] IMV/PCV1 open error............................................................. 543
		Failure code [CA322] Injector #1 (L #1) system open/short error...................................... 544
		Failure code [CA324] Injector #3 (L #3) system open/short error...................................... 546
		Failure code [CA331] Injector #2 (L #2) system open/short error...................................... 548
		Failure code [CA332] Injector #4 (L #4) system open/short error...................................... 550
	320 Troubleshooting by failure code, Part 2.............................................................. 553
		Failure code [CA351] Inj. drive circuit error........................................................ 555
		Failure code [CA352] Sensor sup. 1 volt. low error................................................... 558
		Failure code [CA435] Abnormality in engine oil pressure switch....................................... 562
		Failure code [CA441] Battery voltage low error....................................................... 563
		Failure code [CA442] Battery voltage high error...................................................... 564
		Failure code [CA449] Rail press. very high error..................................................... 565
		Failure code [CA451] Rail press. sensor high error................................................... 566
		Failure code [CA452] Rail press. sensor low error.................................................... 568
		Failure code [CA553] Rail press. high error.......................................................... 568
		Failure code [CA559] Rail press. low error........................................................... 569
		Failure code [CA689] Eng. Ne speed sensor error...................................................... 572
		Failure code [CA731] Eng. Bkup speed sensor phase error.............................................. 574
		Failure code [CA757] All persistent data lost error.................................................. 575
		Failure code [CA778] Eng. Bkup speed sensor error.................................................... 576
		Failure code [CA1633] KOMNET datalink timeout error.................................................. 578
		Failure code [CA2185] Throttle sens. sup. volt. high error........................................... 580
		Failure code [CA2186] Throttle sens. sup. volt. low error............................................ 582
		Failure code [CA2249] Rail press. very low error..................................................... 583
		Failure code [CA2311] Abnormality in IMV solenoid.................................................... 584
		Failure code [D110KB] Battery relay drive short...................................................... 585
		Failure code [D19JKZ] Personal code relay abnormality................................................ 589
		Failure code [D862KA] GPS antenna discon............................................................. 592
		Failure code [DA22KK] Pump solenoid power low error.................................................. 593
		Failure code [DA25KP] 5 V sensor 1 power abnormality................................................. 595
		Failure code [DA26KP] 5 V sensor 2 power abnormality................................................. 598
	330 Troubleshooting by failure code, Part 3.............................................................. 601
		Failure code [DA2RMC] CAN discon (Pump controller detected).......................................... 602
		Failure code [DAFGMC] GPS module error............................................................... 604
		Failure code [DAFRMC] CAN discon (Monitor detected).................................................. 606
		Failure code [DFB1KZ] Service lever pot. 1 abnormality............................................... 608
		Failure code [DFB2KZ] Service lever pot. 2 abnormality............................................... 610
		Failure code [DFB3L8] Service lever1 potentio error.................................................. 612
		Failure code [DFB4L8] Service lever2 potentio error.................................................. 614
		Failure code [DFB5KZ] Service lever sPot. 1 abnormality.............................................. 616
		Failure code [DFB6KZ] Service lever sPot. 2 abnormality.............................................. 618
		Failure code [DGH2KB] Hydr oil sensor short.......................................................... 620
		Failure code [DHPAMA] Pump press sensor abnormality.................................................. 622
		Failure code [DHS5KX] Travel PPC sensor abnormality.................................................. 624
		Failure code [DHSAMA] Swing RH PPC press sensor abnormality.......................................... 626
		Failure code [DHSBMA] Swing LH PPC press sensor abnormality.......................................... 628
		Failure code [DHX1MA] Overload sensor abnormality.................................................... 630
		Failure code [DV20KB] Travel alarm short circuit..................................................... 631
		Failure code [DW43KA] Travel speed sol discon........................................................ 632
		Failure code [DW43KB] Travel speed sol short......................................................... 633
		Failure code [DW45KA] Swing brake sol discon......................................................... 634
		Failure code [DW45KB] Swing brake sol short.......................................................... 636
		Failure code [DWJ0KA] Merge-divider sol discon....................................................... 638
		Failure code [DWJ0KB] Merge-divider sol short........................................................ 639
	340 Troubleshooting by failure code, Part 4.............................................................. 641
		Failure code [DXA8KA] PC-EPC sol discon.............................................................. 642
		Failure code [DXA8KB] PC-EPC sol short............................................................... 644
		Failure code [DXE7KA] Service current EPC2 open circuit.............................................. 646
		Failure code [DXE7KB] Service current EPC2 short circuit............................................. 648
		Failure code [DXE8KA] Service current EPC3 open circuit.............................................. 650
		Failure code [DXE8KB] Service current EPC3 short circuit............................................. 652
		Failure code [DXE9KA] Service current EPC4 open circuit.............................................. 654
		Failure code [DXE9KB] Service current EPC4 short circuit............................................. 656
		Failure code [DXEAKA] Service current EPC1 open circuit.............................................. 658
		Failure code [DXEAKB] Service current EPC1 short circuit............................................. 660
		Failure code [DY20KA] Wiper working abnormality...................................................... 662
		Failure code [DY20MA] Wiper parking abnormality...................................................... 664
		Failure code [DY2CKA] Washer drive open circuit...................................................... 666
		Failure code [DY2CKB] Washer drive short circuit..................................................... 668
		Failure code [DY2DKB] Wiper drive (fwd) short circuit................................................ 670
		Failure code [DY2EKB] Wiper drive (rev) short circuit................................................ 672
	400 Troubleshooting of electrical system (E-mode)........................................................ 675
		Before carrying out troubleshooting of electrical system............................................. 677
		Information in troubleshooting table................................................................. 680
		E-1 When starting switch is turned ON, machine monitor displays nothing.............................. 682
		E-2 Engine does not start (Engine does not turn)..................................................... 684
		E-3 Preheater does not operate....................................................................... 688
		E-4 Automatic warm-up system does not operate (in cold season)....................................... 691
		E-5 All work equipment, swing, and travel mechanism do not move or cannot be locked.................. 692
		E-6 Precaution lights up while engine is running..................................................... 694
		E-7 Emergency stop item lights up while engine is running............................................ 698
		E-8 Engine coolant temperature gauge does not indicate normally...................................... 699
		E-9 Hydraulic oil temperature gauge does not indicate normally....................................... 700
		E-10 Fuel level gauge does not indicate normally..................................................... 703
		E-11 Contents of display by machine monitor are different from applicable machine.................... 705
		E-12 Machine monitor does not display some items..................................................... 705
		E-13 Function switch does not work................................................................... 705
		E-14 Auto-decelerator does not operate normally...................................................... 706
		E-15 Working mode does not change.................................................................... 707
		E-16 Travel speed does not change.................................................................... 708
		E-17 Alarm buzzer cannot be stopped.................................................................. 709
		E-18 Windshield wiper and window washer do not operate............................................... 710
		E-19 Swing holding brake does not operate normally................................................... 714
		E-20 Travel alarm does not sound or does not stop sounding........................................... 716
		E-21 Air conditioner does not operate normally (including air conditioner abnormality record)........ 717
		E-22 While starting switch is in OFF position, service meter is not displayed........................ 730
		E-23 Machine monitor cannot be set in service mode................................................... 731
		E-24 Monitoring function does not display lever control signal normally.............................. 732
		E-25 KOMTRAX system does not operate normally........................................................ 752
	500 Troubleshooting of hydraulic and mechanical system (H-mode).......................................... 755
		Information contained in troubleshooting table....................................................... 757
		System chart for hydraulic and mechanical systems.................................................... 758
		H-1 Speed or power of all work equipment, swing, and travel are low.................................. 760
		H-2 Engine speed sharply drops or engine stalls...................................................... 761
		H-3 No work equipment, travel and swing move......................................................... 762
		H-4 Abnormal noise is heard from around hydraulic pump............................................... 762
		H-5 Fine control performance or response of work equipment and travel is low......................... 763
		H-6 Speed or power of boom is low.................................................................... 764
		H-7 Speed or power of arm is low..................................................................... 765
		H-8 Speed or power of bucket is low.................................................................. 766
		H-9 Speed or power of boom swing is low.............................................................. 767
		H-10 Speed or power of blade is low.................................................................. 768
		H-11 Work equipment does not move in its single operation............................................ 769
		H-12 Hydraulic drift of work equipment is large...................................................... 770
		H-13 Time lag of work equipment is large............................................................. 772
		H-14 Work equipment loaded more is slower during compound operation.................................. 772
		H-15 Boom RAISE speed is low in compound operation of swing + boom RAISE............................. 772
		H-16 Travel speed lowers significantly during compound operation of work equipment/swing + travel.... 773
		H-17 Machine deviates during travel.................................................................. 774
		H-18 Travel speed is low............................................................................. 775
		H-19 Machine cannot be steered easily or steering power is low....................................... 776
		H-20 Travel speed does not change or it is kept low or high.......................................... 777
		H-21 Track does not move (only either side).......................................................... 777
		H-22 Machine does not swing.......................................................................... 778
		H-23 Swing acceleration, swing speed and swing power are low......................................... 779
		H-24 Excessive overrun when stopping swing........................................................... 781
		H-25 When upper structure stops swinging, it makes large shock....................................... 782
		H-26 When upper structure stops swinging, it makes large sound....................................... 782
		H-27 Hydraulic drift of swing is large............................................................... 783
		H-28 Flow rate in attachment circuit cannot be adjusted.............................................. 784
	600 Troubleshooting of engine (S-mode)................................................................... 787
		Method of using troubleshooting chart................................................................ 788
		S-1 Starting performance is poor..................................................................... 792
		S-2 Engine does not start............................................................................ 793
		S-3 Engine does not pick up smoothly................................................................. 796
		S-4 Engine stops during operations................................................................... 797
		S-5 Engine does not rotate smoothly.................................................................. 798
		S-6 Engine lacks output (or lacks power)............................................................. 799
		S-7 Exhaust smoke is black (incomplete combustion)................................................... 800
		S-8 Oil consumption is excessive (or exhaust smoke is blue).......................................... 801
		S-9 Oil becomes contaminated quickly................................................................. 802
		S-10 Fuel consumption is excessive................................................................... 803
		S-11 Oil is in coolant (or coolant spurts back or coolant level goes down)........................... 804
		S-12 Oil pressure drops.............................................................................. 805
		S-13 Oil level rises (Entry of coolant or fuel)...................................................... 806
		S-14 Coolant temperature becomes too high (overheating).............................................. 807
		S-15 Abnormal noise is made.......................................................................... 808
		S-16 Vibration is excessive.......................................................................... 809
50 Disassembly and assembly..................................................................................   0
	100 General information on disassembly and assembly...................................................... 811
		How to read this manual.............................................................................. 812
		Coating materials list............................................................................... 814
		Special tool list.................................................................................... 817
		Sketches of special tools............................................................................ 821
	200 Engine and cooling system............................................................................ 827
		Removal and installation of fuel supply pump assembly................................................ 828
		Removal and installation of fuel injector assembly................................................... 832
		Removal and installation of engine front seal........................................................ 836
		Removal and installation of engine rear seal......................................................... 837
		Removal and installation of cylinder head assembly................................................... 839
		Removal and installation of radiator assembly........................................................ 850
		Removal and installation of aftercooler assembly..................................................... 853
		Removal and installation of hydraulic oil cooler assembly............................................ 855
		Removal and installation of engine and hydraulic pump assembly....................................... 858
		Removal and installation of fuel tank assembly....................................................... 868
		Removal and installation of fuel tank assembly....................................................... 869
	300 Power train.......................................................................................... 873
		Removal and installation of travel motor and final drive assembly.................................... 875
		Disassembly and assembly of travel motor and final drive assembly.................................... 877
		Removal and installation of swing motor and swing machinery assembly................................. 915
		Disassembly and assembly of swing machinery.......................................................... 917
		Removal and installation of swing circle assembly.................................................... 926
	400 Undercarriage and frame.............................................................................. 929
		Disassembly and assembly of track roller assembly.................................................... 930
		Disassembly and assembly of idler assembly........................................................... 933
		Disassembly and assembly of recoil spring assembly................................................... 936
		Spreading and installation of track shoe assembly.................................................... 938
		Removal and installation of sprocket................................................................. 940
		Removal and installation of revolving frame assembly................................................. 941
		Removal and installation of counterweight assembly................................................... 944
	500 Hydraulic system..................................................................................... 949
		Removal and installation of center swivel joint assembly............................................. 950
		Disassembly and assembly of center swivel joint assembly............................................. 952
		Removal and installation of hydraulic tank assembly.................................................. 954
		Removal and installation of hydraulic pump assembly.................................................. 957
		Removal and installation of control valve assembly................................................... 961
		Disassembly and assembly of control valve assembly................................................... 969
		Disassembly and assembly of work equipment PPC valve assembly........................................ 975
		Disassembly and assembly of travel PPC valve assembly................................................ 977
		Removal and installation of boom swing cylinder assembly............................................. 979
		Disassembly and assembly of hydraulic cylinder assembly.............................................. 982
	600 Work equipment....................................................................................... 989
		Removal and installation of work equipment assembly.................................................. 990
		Removal and installation of boom swing bracket....................................................... 993
		Removal and installation of blade assembly........................................................... 997
	700 Cab and its attachments..............................................................................1001
		Removal and installation of operator cab assembly....................................................1002
		Removal and installation of operator's cab glass (Stuck glass).......................................1007
		Removal and installation of front window assembly....................................................1017
		Removal and installation of floor frame assembly.....................................................1018
	800 Electrical system....................................................................................1025
		Removal and installation of air conditioner compressor assembly......................................1026
		Removal and Installation of air conditioner condenser assembly.......................................1027
		Removal and installation of air conditioner unit assembly............................................1028
		Removal and installation of machine monitor assembly.................................................1032
		Removal and installation of pump controller assembly.................................................1034
		Removal and installation of engine controller assembly...............................................1036
		Removal and installation of KOMTRAX terminal assembly................................................1038
90 Diagrams and drawings.....................................................................................   0
	100 Hydraulic diagrams and drawings......................................................................1041
		Hydraulic circuit diagram............................................................................1043
	200 Electrical diagrams and drawings.....................................................................1048
		Electrical circuit diagram...........................................................................1050
		Electrical circuit diagram of the air conditioner unit...............................................1062
		Connector list and stereogram........................................................................1063

KOMATSU PC88MR-8 HYDRAULIC EXCAVATOR SHOP MANUAL SEN04329-11 – PDF DOWNLOAD:

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