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KOMATSU D61EX-23 D61PX-23 BULLDOZER SHOP MANUAL SEN06010-10 – PDF DOWNLOAD

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KOMATSU D61EX-23 D61PX-23 BULLDOZER SHOP MANUAL SEN06010-10 – PDF DOWNLOAD

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KOMATSU D61EX-23 D61PX-23 BULLDOZER SHOP MANUAL SEN06010-10 – PDF DOWNLOAD

Language : English
Pages : 1768
Downloadable : Yes
File Type : PDF

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TABLE OF CONTENTS:

KOMATSU D61EX-23 D61PX-23 BULLDOZER SHOP MANUAL SEN06010-10 – PDF DOWNLOAD

Cover...........................................................................................................................................   1
00 Index and foreword ..........................................................................................................................   3
	Index ......................................................................................................................................   4
	Foreword, safety and general information ...................................................................................................  17
		Important safety notice ................................................................................................................  17
		How to read the shop manual ............................................................................................................  24
		Explanation of terms for maintenance standard ..........................................................................................  26
		Handling equipment of fuel system devices ..............................................................................................  28
		Handling of intake system parts ........................................................................................................  29
		Handling of hydraulic equipment ........................................................................................................  30
		Method of disconnecting and connecting of push-pull type coupler .......................................................................  32
		Handling of electrical equipment .......................................................................................................  35
		How to read electric wire code .........................................................................................................  43
		Precautions when performing operation ..................................................................................................  46
		Practical use of KOMTRAX ...............................................................................................................  51
		Standard tightening torque table .......................................................................................................  52
		List of abbreviation ...................................................................................................................  58
		Conversion table .......................................................................................................................  63
01 Specification ...............................................................................................................................  69
	Table of contents ..........................................................................................................................  70
	Specifications .............................................................................................................................  71
		Specification drawing ..................................................................................................................  71
		Specifications .........................................................................................................................  73
		Weight table ...........................................................................................................................  86
		Table of fuel, coolant, and lubricants .................................................................................................  90
10 Structure and function ......................................................................................................................  91
	Table of contents ..........................................................................................................................  92
	Engine and cooling system ..................................................................................................................  93
		Engine related parts ...................................................................................................................  93
		KVGT ...................................................................................................................................  95
		EGR system piping drawing .............................................................................................................. 102
		EGR system circuit diagram ............................................................................................................. 104
		EGR valve .............................................................................................................................. 106
		EGR cooler ............................................................................................................................. 108
		KCCV layout drawing .................................................................................................................... 109
		KCCV ventilator ........................................................................................................................ 111
		KDPF ................................................................................................................................... 113
		Cooling system ......................................................................................................................... 117
		Cooling fan motor ...................................................................................................................... 119
		Oil cooler bypass and HST charge safety valve .......................................................................................... 125
	Power train ................................................................................................................................ 131
		Power train system ..................................................................................................................... 131
		Damper ................................................................................................................................. 134
		Hydraulic component layout of HST ...................................................................................................... 135
		Steering and brake control ............................................................................................................. 136
		HST pump ............................................................................................................................... 138
		HST motor .............................................................................................................................. 153
		Charge pump ............................................................................................................................ 168
		Solenoid valve ......................................................................................................................... 169
		Final drive ............................................................................................................................ 178
	Undercarriage and frame .................................................................................................................... 182
		Main frame ............................................................................................................................. 182
		Suspension ............................................................................................................................. 183
		Track frame and idler cushion .......................................................................................................... 185
	Hydraulic system ........................................................................................................................... 188
		Hydraulic component layout of work equipment ........................................................................................... 188
		Work equipment control system .......................................................................................................... 190
		Hydraulic tank ......................................................................................................................... 192
		CLSS ................................................................................................................................... 194
		Work equipment and cooling fan pump .................................................................................................... 197
		Control valve .......................................................................................................................... 208
		Ripper PPC valve ....................................................................................................................... 230
		Quick drop valve ....................................................................................................................... 235
		Angle control EPC valve ................................................................................................................ 238
		Accumulator ............................................................................................................................ 243
	Work equipment ............................................................................................................................. 245
		Blade .................................................................................................................................. 245
		Ripper ................................................................................................................................. 246
		Piston valve ........................................................................................................................... 247
	Cab and its attachments .................................................................................................................... 248
		ROPS cab ............................................................................................................................... 248
		Cab mount .............................................................................................................................. 250
	Electrical system .......................................................................................................................... 251
		Engine control system .................................................................................................................. 251
		Cooling system control system .......................................................................................................... 254
		HST control system ..................................................................................................................... 256
		Parking brake control system ........................................................................................................... 269
		System operating lamp function ......................................................................................................... 271
		Battery disconnect switch function ..................................................................................................... 272
		Machine monitor system ................................................................................................................. 274
		KOMTRAX system ......................................................................................................................... 297
		System component parts ................................................................................................................. 300
		Sensor ................................................................................................................................. 317
20 Standard value tables ....................................................................................................................... 335
	Table of contents .......................................................................................................................... 336
	Standard service value table ............................................................................................................... 337
		Standard value table for engine ........................................................................................................ 337
		Standard value table for machine ....................................................................................................... 338
		Standard value table for electrical system ............................................................................................. 351
30 Testing and adjusting ....................................................................................................................... 361
	Table of contents .......................................................................................................................... 362
	Related information on testing and adjusting ............................................................................................... 364
		Tools for testing and adjusting ........................................................................................................ 364
		Sketch of tools for testing and adjusting .............................................................................................. 369
	Engine and cooling system .................................................................................................................. 373
		Testing engine speed ................................................................................................................... 373
		Testing boost pressure ................................................................................................................. 375
		Testing exhaust gas color .............................................................................................................. 377
		Testing mass air flow and temperature sensor............................................................................................ 379
		Testing and adjusting valve clearance .................................................................................................. 381
		Testing compression pressure ........................................................................................................... 384
		Testing blowby pressure ................................................................................................................ 388
		Testing engine oil pressure ............................................................................................................ 390
		Testing EGR valve and KVGT oil pressures ............................................................................................... 391
		Testing fuel pressure .................................................................................................................. 392
		Testing fuel discharge, return and leakage ............................................................................................. 397
		Bleeding air from fuel system .......................................................................................................... 402
		Testing fuel circuit for leakage ....................................................................................................... 404
		Handling cylinder cutout mode operation ................................................................................................ 405
		Handling no-injection cranking operation ............................................................................................... 406
		Testing of KDPF and muffler stack for looseness and damage ............................................................................. 407
		Testing of installed condition of cylinder heads and manifolds ......................................................................... 408
		Testing engine piping for damage and looseness ......................................................................................... 409
		Check alternator belt, replace ......................................................................................................... 410
		Check auto-tensioner, replace .......................................................................................................... 412
		Writing compensation amount for soot accumulation caused by ash on engine controller ................................................... 414
	Power train ................................................................................................................................ 416
		Testing and adjusting HST oil pressure ................................................................................................. 416
		Testing output pressure of solenoid valve .............................................................................................. 421
		Testing if machine travels straight .................................................................................................... 425
		Simple test procedure for brake performance ............................................................................................ 426
		Adjusting deceleration/brake pedal ..................................................................................................... 427
		Adjusting parking brake lever .......................................................................................................... 430
		Move disabled machine urgently ......................................................................................................... 432
	Undercarriage and frame .................................................................................................................... 435
		Adjusting idler clearance .............................................................................................................. 435
		Checking sprocket wear ................................................................................................................. 436
		Testing and adjusting track tension .................................................................................................... 437
	Hydraulic system ........................................................................................................................... 438
		Releasing remaining pressure in work equipment cylinder ................................................................................ 438
		Testing and adjusting work equipment oil pressure ...................................................................................... 439
		Testing source pressure of control circuit ............................................................................................. 441
		Testing outlet pressure of work equipment EPC valve and fan EPC valve .................................................................. 442
		Isolating the parts causing hydraulic drift in blade and ripper ........................................................................ 444
		Testing internal oil leakage of work equipment cylinder ................................................................................ 445
		Testing fan speed ...................................................................................................................... 447
		Testing fan circuit oil pressure ....................................................................................................... 448
		Bleeding air from hydraulic circuit .................................................................................................... 449
	Work equipment ............................................................................................................................. 450
		Adjusting work equipment lock lever .................................................................................................... 450
		Adjusting play of blade center ball .................................................................................................... 452
		Testing and adjusting play of blade electric lever...................................................................................... 453
	Electrical system .......................................................................................................................... 461
		Special functions of machine monitor ................................................................................................... 461
		Adjustment method when HST controller has been replaced ................................................................................ 540
		Adjustment method when electric or hydraulic device has been replaced .................................................................. 543
		Adjusting rearview camera angle ........................................................................................................ 544
		Handling voltage circuit of engine controller .......................................................................................... 545
		Handling battery disconnect switch ..................................................................................................... 546
		Testing diodes ......................................................................................................................... 547
	Pm clinic .................................................................................................................................. 548
		Pm Clinic service ...................................................................................................................... 548
		Pm Clinic check sheet .................................................................................................................. 550
40 Troubleshooting ............................................................................................................................. 557
	Table of contents .......................................................................................................................... 558
	Related information on troubleshooting ..................................................................................................... 565
		Troubleshooting points ................................................................................................................. 565
		Sequence of events in troubleshooting .................................................................................................. 567
		Checks before troubleshooting .......................................................................................................... 569
		Inspection procedure before troubleshooting ............................................................................................ 571
		Preparation for troubleshooting of electrical system ................................................................................... 588
		Classification and procedures for troubleshooting ...................................................................................... 592
		Symptom and troubleshooting numbers .................................................................................................... 594
		Information in troubleshooting table ................................................................................................... 597
		Procedure for troubleshooting wiring harness of pressure sensor system for open circuit ................................................ 599
		Connector list and layout .............................................................................................................. 602
		Connector contact identification ....................................................................................................... 614
		T-branch box and T-branch adapter table ................................................................................................ 653
		Fuse location table .................................................................................................................... 658
		Precautions for KDPF (KCSF and KDOC) Cleaning and Replacement .......................................................................... 663
		Preparation of dummy temperature sensor (for KDOC and KDPF temperature sensors) ........................................................ 666
		Preparation of short circuit electrical connector (for failure codes [CA1883] and [CA3135]) ............................................ 667
		Failure codes table .................................................................................................................... 668
	Troubleshooting by failure code (Display of code) .......................................................................................... 679
		Failure code [6091NX] HST Oil Filter Clogging .......................................................................................... 679
		Failure code [989L00] Engine Controller Lock Caution 1 ................................................................................. 681
		Failure code [989M00] Engine Controller Lock Caution 2 ................................................................................. 682
		Failure code [989N00] Engine Controller Lock Caution 3 ................................................................................. 683
		Failure code [A1U0N3] HC Desorb Request 1 .............................................................................................. 684
		Failure code [A1U0N4] HC Desorb Request 2 .............................................................................................. 686
		Failure code [AA10NX] Air Cleaner Clogging ............................................................................................. 688
		Failure code [AB00KE] Charge Voltage Low ............................................................................................... 690
		Failure code [B@BAZG] Eng Oil Press Low ................................................................................................ 692
		Failure code [B@BCNS] Eng Water Overheat ............................................................................................... 693
		Failure code [B@CRNS] HST Oil Overheat ................................................................................................. 694
		Failure code [B@CRZG] HST Charge Press Low ............................................................................................. 695
		Failure code [CA115] Eng Ne and Bkup Speed Sens Error .................................................................................. 696
		Failure code [CA122] Chg Air Press Sensor High Error ................................................................................... 697
		Failure code [CA123] Chg Air Press Sensor Low Error .................................................................................... 699
		Failure code [CA131] Throttle Sensor High Error ........................................................................................ 701
		Failure code [CA132] Throttle Sensor Low Error ......................................................................................... 703
		Failure code [CA144] Coolant Temp Sens High Error ...................................................................................... 705
		Failure code [CA145] Coolant Temp Sens Low Error ....................................................................................... 707
		Failure code [CA153] Chg Air Temp Sensor High Error .................................................................................... 709
		Failure code [CA154] Chg Air Temp Sensor Low Error ..................................................................................... 711
		Failure code [CA187] Sensor 2 Supply Volt Low Error .................................................................................... 713
		Failure code [CA234] Eng Overspeed ..................................................................................................... 715
		Failure code [CA221] Ambient Press Sensor High Error ................................................................................... 716
		Failure code [CA222] Ambient Press Sensor Low Error .................................................................................... 718
		Failure code [CA227] Sensor 2 Supply Volt High Error ................................................................................... 720
		Failure code [CA238] Ne Speed Sensor Supply Volt Error ................................................................................. 721
		Failure code [CA239] Ne Speed Sens Supply Volt High Error .............................................................................. 722
		Failure code [CA271] IMV/PCV1 Short Error .............................................................................................. 723
		Failure code [CA272] IMV/PCV1 Open Error ............................................................................................... 725
		Failure code [CA295] Ambient Pressure Sensor In Range Error ............................................................................ 727
		Failure code [CA322] Inj #1(L#1) Open/Short Error ...................................................................................... 728
		Failure code [CA323] Inj #5(L#5) Open/Short Error ...................................................................................... 730
		Failure code [CA324] Inj #3(L#3) Open/Short Error ...................................................................................... 732
		Failure code [CA325] Inj #6(L#6) Open/Short Error ...................................................................................... 734
		Failure code [CA331] Inj #2(L#2) Open/Short Error ...................................................................................... 736
		Failure code [CA332] Inj #4(L#4) Open/Short Error ...................................................................................... 738
		Failure code [CA343] ECM Critical Internal Failure ..................................................................................... 740
		Failure code [CA351] Injectors Drive Circuit Error ..................................................................................... 741
		Failure code [CA352] Sensor 1 Supply Volt Low Error .................................................................................... 742
		Failure code [CA356] Mass Air Flow Sensor High Error ................................................................................... 744
		Failure code [CA357] Mass Air Flow Sensor Low Error .................................................................................... 746
		Failure code [CA386] Sensor 1 Supply Volt High Error ................................................................................... 748
		Failure code [CA428] Water in Fuel Sensor High Error ................................................................................... 749
		Failure code [CA429] Water in Fuel Sensor Low Error .................................................................................... 751
		Failure code [CA435] Eng Oil Press Sw Error ............................................................................................ 753
		Failure code [CA441] Battery Voltage Low Error ......................................................................................... 754
		Failure code [CA442] Battery Voltage High Error ........................................................................................ 756
		Failure code [CA449] Rail Press Very High Error ........................................................................................ 757
		Failure code [CA451] Rail Press Sensor High Error ...................................................................................... 758
		Failure code [CA452] Rail Press Sensor Low Error ....................................................................................... 760
		Failure code [CA488] Chg Air Temp High Torque Derate ................................................................................... 762
		Failure code [CA515] Rail Press Sens Sup Volt High Error ............................................................................... 763
		Failure code [CA516] Rail Press Sens Sup Volt Low Error ................................................................................ 765
		Failure code [CA553] Rail Press High Error ............................................................................................. 767
		Failure code [CA555] Crankcase Press High Error 2 ...................................................................................... 768
		Failure code [CA556] Crankcase Press High Error 2 ...................................................................................... 769
		Failure code [CA559] Rail Press Low Error .............................................................................................. 770
		Failure code [CA595] Turbo Speed High Error 2 .......................................................................................... 772
		Failure code [CA687] Turbo Speed Low Error ............................................................................................. 773
		Failure code [CA689] Eng Ne Speed Sensor Error ......................................................................................... 775
		Failure code [CA691] Intake Air Temp Sens High Error ................................................................................... 777
		Failure code [CA692] Intake Air Temp Sens Low Error .................................................................................... 779
		Failure code [CA697] ECM Internal Temp Sensor High Error ............................................................................... 781
		Failure code [CA698] ECM Int Temp Sensor Low Error ..................................................................................... 782
		Failure code [CA731] Eng Bkup Speed Sens Phase Error ................................................................................... 783
		Failure code [CA778] Eng Bkup Speed Sensor Error ....................................................................................... 785
		Failure code [CA1117] Persistent Data Lost Error ....................................................................................... 790
		Failure code [CA1664] KDOC Malfunction ................................................................................................. 791
		Failure code [CA1691] Regeneration Ineffective ......................................................................................... 794
		Failure code [CA1695] Sens 5 Supply Volt High Error .................................................................................... 797
		Failure code [CA1696] Sens 5 Supply Volt Low Error ..................................................................................... 798
		Failure code [CA1843] Crankcase Press Sens High Error .................................................................................. 800
		Failure code [CA1844] Crankcase Press Sens Low Error ................................................................................... 802
		Failure code [CA1879] KDPF Delta P Sensor High Error ................................................................................... 804
		Failure code [CA1881] KDPF Delta P Sensor Low Error .................................................................................... 806
		Failure code [CA1883] KDPF Delta P Sens In Range Error ................................................................................. 808
		Failure code [CA1921] KDPF Soot Load High Error 1 ...................................................................................... 812
		Failure code [CA1922] KDPF Soot Load High Error 2 ...................................................................................... 815
		Failure code [CA1942] Crankcase Press Sens In Range Error .............................................................................. 820
		Failure code [CA1993] KDPF Delta Pressure Low Error .................................................................................... 821
		Failure code [CA2185] Throt Sensor Sup Volt High Error ................................................................................. 824
		Failure code [CA2186] Throt Sensor Sup Volt Low Error .................................................................................. 825
		Failure code [CA2249] Rail Press Very Low Error ........................................................................................ 826
		Failure code [CA2271] EGR Valve Pos Sens High Error .................................................................................... 827
		Failure code [CA2272] EGR Valve Pos Sens Low Error ..................................................................................... 829
		Failure code [CA2288] Turbo Speed High Error 1 ......................................................................................... 832
		Failure code [CA2311] IMV Solenoid Error ............................................................................................... 833
		Failure code [CA2349] EGR Valve Solenoid Open Error .................................................................................... 834
		Failure code [CA2353] EGR Valve Solenoid Short Error ................................................................................... 836
		Failure code [CA2357] EGR Valve Servo Error ............................................................................................ 838
		Failure code [CA2373] Exhaust Manifold Press Sens High error ........................................................................... 839
		Failure code [CA2374] Exhaust Manifold Press Sens Low error ............................................................................ 841
		Failure code [CA2375] EGR Orifice Temp Sens High Error ................................................................................. 843
		Failure code [CA2376] EGR Orifice Temp Sens Low Error .................................................................................. 845
		Failure code [CA2381] KVGT Pos Sens High Error ......................................................................................... 847
		Failure code [CA2382] KVGT Pos Sens Low Error .......................................................................................... 849
		Failure code [CA2383] KVGT Solenoid Open Error ......................................................................................... 852
		Failure code [CA2386] KVGT Solenoid Short Error ........................................................................................ 854
		Failure code [CA2387] KVGT Servo Error ................................................................................................. 856
		Failure code [CA2554] Exh Manifold Press Sens In Range Error ........................................................................... 861
		Failure code [CA2555] Grid Htr Relay Volt Low Error .................................................................................... 864
		Failure code [CA2556] Grid Htr Relay Volt High Error ................................................................................... 866
		Failure code [CA2637] KDOC Face Plugging ............................................................................................... 868
		Failure code [CA2639] Manual Stationary Regeneration Request ........................................................................... 870
		Failure code [CA2961] EGR Orifice Temp High Error 1 .................................................................................... 873
		Failure code [CA2973] Chg Air Press Sensor In Range Error .............................................................................. 874
		Failure code [CA3133] KDPF Outlet Press Sens High Error ................................................................................ 875
		Failure code [CA3134] KDPF Outlet Press Sens Low Error ................................................................................. 877
		Failure code [CA3135] KDPF Outlet Press Sens In Range Error ............................................................................ 879
		Failure code [CA3251] KDOC Inlet Temp High Error ....................................................................................... 883
		Failure code [CA3253] KDOC Temp Error - Non Regeneration ............................................................................... 886
		Failure code [CA3254] KDOC Outlet Temp High Error 1 .................................................................................... 890
		Failure code [CA3255] KDPF Temp Error - Non Regeneration ............................................................................... 893
		Failure code [CA3256] KDPF Outlet Temp High Error 1 .................................................................................... 898
		Failure code [CA3311] KDOC Outlet Temp High Error 2 .................................................................................... 901
		Failure code [CA3312] KDPF Outlet Temp High Error 2 .................................................................................... 905
		Failure code [CA3313] KDOC Inlet Temp Sensor Low Error ................................................................................. 909
		Failure code [CA3314] KDOC Inlet Temp Sens High Error .................................................................................. 912
		Failure code [CA3315] KDOC Inlet Temp Sens In Range Error .............................................................................. 916
		Failure code [CA3316] KDOC Outlet Temp Sens Low Error .................................................................................. 920
		Failure code [CA3317] KDOC Outlet Temp Sens High Error ................................................................................. 923
		Failure code [CA3318] KDOC Outlet Temp Sens In Range Error ............................................................................. 927
		Failure code [CA3319] KDPF Outlet Temp Sens High Error ................................................................................. 931
		Failure code [CA3321] KDPF Outlet Temp Sens Low Error .................................................................................. 935
		Failure code [CA3322] KDPF Outlet Temp Sens In Range Error ............................................................................. 938
		Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error ......................................................................... 942
		Failure code [CA3421] Mass Air Flow Sensor Sup Volt Low Error .......................................................................... 944
		Failure code [CA3741] Rail Press Valve Trip Error ...................................................................................... 946
		Failure code [D130KA] Neutral relay Open ............................................................................................... 947
		Failure code [D130KB] Neutral relay Short circuit ...................................................................................... 949
		Failure code [D130KY] Neutral relay: Hot Short ......................................................................................... 951
		Failure code [D19JKZ] Personal Code Relay Abnormality .................................................................................. 953
		Failure code [D811MC] KOMTRAX Error .................................................................................................... 956
		Failure code [D862KA] GPS Antenna Open Circuit ......................................................................................... 957
		Failure code [D8ALKA] Operating Lamp Open Circuit (KOMTRAX) ............................................................................ 958
		Failure code [D8ALKB] Operating Lamp Short Circuit (KOMTRAX) ........................................................................... 960
		Failure code [D8AQKR] CAN2 Discon (KOMTRAX) ............................................................................................ 961
		Failure code [DAF0MB] Monitor ROM Abnormality .......................................................................................... 962
		Failure code [DAF0MC] Monitor Error .................................................................................................... 963
		Failure code [DAF8KB] Camera Power Supply Short Circuit ................................................................................ 964
		Failure code [DAF9KQ] Model Selection Abnormality ...................................................................................... 965
		Failure code [DAFGMC] GPS Module Error ................................................................................................. 966
		Failure code [DAFLKA] Operating Lamp Open Circuit (Monitor) ............................................................................ 967
		Failure code [DAFLKB] Operating Lamp Short Circuit (Monitor) ........................................................................... 969
		Failure code [DAFQKR] CAN2 Discon (Monitor) ............................................................................................ 970
		Failure code [DAJ000] HST controller: Abnormality in controller ........................................................................ 971
		Failure code [DAJ0KQ] HST controller: Type select signal ............................................................................... 972
		Failure code [DAJ0KT] HST controller: Abnormality in controller ........................................................................ 973
		Failure code [DAJ0MC] HST Con Error .................................................................................................... 974
		Failure code [DAJ1KK] HST controller: Source voltage low ............................................................................... 975
		Failure code [DAJ2KK] HST controller: Output voltage low ............................................................................... 977
		Failure code [DAJ5KK] HST: Sensor volt 5V (0) Out of normal range ...................................................................... 979
		Failure code [DAJ6KK] HST: Sensor volt 5V (1) Out of normal range ...................................................................... 981
		Failure code [DAJLKA] Operating Lamp Open Circuit (HST Con) ............................................................................ 983
		Failure code [DAJLKB] Operating Lamp Short Circuit (HST Con) ........................................................................... 985
		Failure code [DAJPMA] Inconsistency of Option Selection (HST) .......................................................................... 986
		Failure code [DAJQKR] CAN2 Discon (HST Con) ............................................................................................ 987
		Failure code [DAJRKR] CAN1 Discon (HST Con) ............................................................................................ 988
		Failure code [DB2QKR] CAN2 Discon (Engine Con) ......................................................................................... 989
		Failure code [DB2RKR] CAN1 Discon (Engine Con) ......................................................................................... 993
		Failure code [DD12KA] Shift up SW: Open ................................................................................................ 997
		Failure code [DD12KB] Shift up SW: Short Circuit ....................................................................................... 999
		Failure code [DD13KA] Shift down SW: Open ..............................................................................................1001
		Failure code [DD13KB] Shift down SW: Short Circuit .....................................................................................1003
		Failure code [DD14KA] Parking lever SW: Open ...........................................................................................1005
		Failure code [DD14KB] Parking lever SW: Short circuit ..................................................................................1007
		Failure code [DDKAKA] Blade float Sw: Open .............................................................................................1009
		Failure code [DDKAKB] Blade float Sw: Short circuit ....................................................................................1011
		Failure code [DDKFL4] Left Angle Sw: Signal mismatch ...................................................................................1013
		Failure code [DDKGL4] Right Angle Sw: Signal mismatch ..................................................................................1015
		Failure code [DDKHKA] iB Sw: Open ......................................................................................................1017
		Failure code [DDKHKB] iB Sw: Short circuit .............................................................................................1019
		Failure code [DDNLKA] Weq lock Sw: Open ................................................................................................1021
		Failure code [DDNLKB] Weq lock Sw: Short circuit .......................................................................................1023
		Failure code [DDP6KA] Brake Pressure Sensor: Open ......................................................................................1025
		Failure code [DDP6KB] Brake Pressure Sensor: Hot Short .................................................................................1027
		Failure code [DDP6MA] Brake pressure sensor: Malfunction ...............................................................................1029
		Failure code [DDU1FS] Parking lever Switch 2: Signal mismatch ..........................................................................1031
		Failure code [DDU1KA] Parking lever Sw2: Open ..........................................................................................1033
		Failure code [DDU1KY] Parking lever Sw2: Hot Short .....................................................................................1035
		Failure code [DFA4KX] Blade lift lever: Main and Sub Error .............................................................................1037
		Failure code [DFA4KZ] Blade lift lever: Main and Sub Error .............................................................................1038
		Failure code [DFA4L8] Blade lift lever: Signal mismatch ................................................................................1039
		Failure code [DFA5KA] Blade lift lever1: Open ..........................................................................................1040
		Failure code [DFA5KB] Blade lift lever1: Hot Short .....................................................................................1043
		Failure code [DFA6KA] Blade lift lever2: Open ..........................................................................................1045
		Failure code [DFA6KB] Blade lift lever2: Hot Short .....................................................................................1047
		Failure code [DFA7KX] Blade tilt lever: Main and Sub Error .............................................................................1049
		Failure code [DFA7KZ] Blade tilt lever: Main and Sub Error .............................................................................1050
		Failure code [DFA7L8] Blade tilt lever: Signal mismatch ................................................................................1051
		Failure code [DFA8KA] Blade tilt lever1: Open ..........................................................................................1052
		Failure code [DFA8KB] Blade tilt lever1: Hot Short .....................................................................................1055
		Failure code [DFA9KA] Blade tilt lever2: Open ..........................................................................................1057
		Failure code [DFA9KB] Blade tilt lever2: Hot Short .....................................................................................1060
		Failure code [DGS1KA] HST oil temp sensor: Open ........................................................................................1062
		Failure code [DGS1KX] HST oil temp sensor: Out of normal range .........................................................................1064
		Failure code [DH21KA] Weq pressure sensor: Open ........................................................................................1065
		Failure code [DH21KB] Weq pressure sensor: Hot Short ...................................................................................1067
		Failure code [DHA4KA] Air Cleaner Clog Sensor Open Circuit .............................................................................1069
		Failure code [DHH7KA] LF HST Pressure Sensor: Open .....................................................................................1071
		Failure code [DHH7KB] LF HST Pressure Sensor: Hot Short ................................................................................1073
		Failure code [DHH8KA] RF HST Pressure Sensor: Open .....................................................................................1075
		Failure code [DHH8KB] RF HST Pressure Sensor: Hot Short ................................................................................1077
		Failure code [DHH9KA] LR HST Pressure Sensor: Open .....................................................................................1079
		Failure code [DHH9KB] LR HST Pressure Sensor: Hot Short ................................................................................1081
		Failure code [DHHAKA] RR HST Pressure Sensor: Open .....................................................................................1083
		Failure code [DHHAKB] RR HST Pressure Sensor: Hot Short ................................................................................1085
		Failure code [DK30KA] ST lever1: Open ..................................................................................................1087
		Failure code [DK30KB] ST lever1: Hot Short .............................................................................................1089
		Failure code [DK30KX] ST lever: Main and Sub Error .....................................................................................1091
		Failure code [DK30KZ] ST lever: Main and Sub Error .....................................................................................1092
		Failure code [DK30L8] ST lever: Signal mismatch ........................................................................................1093
		Failure code [DK31KA] ST lever2: Open ..................................................................................................1094
		Failure code [DK31KB] ST lever2: Hot Short .............................................................................................1096
		Failure code [DK40KA] Decel/Brake potentiometer: Open ..................................................................................1098
		Failure code [DK40KB] Decel/Brake potentiometer: Hot Short .............................................................................1101
		Failure code [DK55KX] FR lever: Main and Sub Error .....................................................................................1103
		Failure code [DK55KZ] FR lever: Main and Sub Error .....................................................................................1104
		Failure code [DK55L8] FR lever: Signal mismatch ........................................................................................1105
		Failure code [DK56KA] FR lever1: Open ..................................................................................................1106
		Failure code [DK56KB] FR lever1: Hot Short .............................................................................................1108
		Failure code [DK57KA] FR lever2: Open ..................................................................................................1110
		Failure code [DK57KB] FR lever2: Hot Short .............................................................................................1112
		Failure code [DLM0KX] HST Motor Speed Sensor: Left/Right Error .........................................................................1114
		Failure code [DLM1KA] Left HST motor speed sensor: Open ................................................................................1115
		Failure code [DLM1KB] Left HST motor speed sensor: Short circuit .......................................................................1117
		Failure code [DLM1MA] Left HST motor speed sensor: Malfunction .........................................................................1119
		Failure code [DLM2KA] Right HST motor speed sensor: Open ...............................................................................1120
		Failure code [DLM2KB] Right HST motor speed sensor: Short circuit ......................................................................1122
		Failure code [DLM2MA] Right HST motor speed sensor: Malfunction ........................................................................1124
		Failure code [DLM3KA] Fan rev. sensor: Open ............................................................................................1125
		Failure code [DLM3KB] Fan rev. sensor: Short circuit ...................................................................................1127
		Failure code [DLM3MB] Fan control: Mismatch ............................................................................................1129
		Failure code [DN21FS] Decel/Brake pedal SW: Signal mismatch ............................................................................1130
		Failure code [DR21KX] Camera 2 Picture Rev. Drive Abnormality ..........................................................................1132
		Failure code [DR31KX] Camera 3 Picture Rev. Drive Abnormality ..........................................................................1133
		Failure code [DV20KB] Back-up alarm: Short circuit .....................................................................................1134
		Failure code [DW4BKA] Parking brake solenoid: Open .....................................................................................1136
		Failure code [DW4BKB] Parking brake solenoid: Short circuit ............................................................................1138
		Failure code [DW4BKY] Parking brake solenoid: Hot Short ................................................................................1140
		Failure code [DW7BKA] Fan reverse solenoid: Open .......................................................................................1142
		Failure code [DW7BKB] Fan reverse solenoid: Short circuit ..............................................................................1144
		Failure code [DW7EKA] Slow brake solenoid: Open ........................................................................................1145
		Failure code [DW7EKB] Slow brake solenoid: Short circuit ...............................................................................1147
		Failure code [DW7EKY] Slow brake solenoid: Hot Short ...................................................................................1149
		Failure code [DWN5KA] Fan EPC: Open ....................................................................................................1151
		Failure code [DWN5KB] Fan EPC: Short circuit ...........................................................................................1153
		Failure code [DWN5KY] Fan EPC: Hot Short ...............................................................................................1154
		Failure code [DXA4KA] LF HST pump EPC: Open ............................................................................................1156
		Failure code [DXA4KB] LF HST pump EPC: Short circuit ...................................................................................1158
		Failure code [DXA4KY] LF HST pump EPC: Hot Short .......................................................................................1159
		Failure code [DXA5KA] LR HST pump EPC: Open ............................................................................................1161
		Failure code [DXA5KB] LR HST pump EPC: Short circuit ...................................................................................1163
		Failure code [DXA5KY] LR HST pump EPC: Hot Short .......................................................................................1165
		Failure code [DXA6KA] RF HST pump EPC: Open ............................................................................................1167
		Failure code [DXA6KB] RF HST pump EPC: Short circuit ...................................................................................1169
		Failure code [DXA6KY] RF HST pump EPC: Hot Short .......................................................................................1170
		Failure code [DXA7KA] RR HST pump EPC: Open ............................................................................................1172
		Failure code [DXA7KB] RR HST pump EPC: Short circuit ...................................................................................1174
		Failure code [DXA7KY] RR HST pump EPC: Hot Short .......................................................................................1175
		Failure code [DXHRKA] Blade lift up EPC: Open ..........................................................................................1177
		Failure code [DXHRKB] Blade lift up EPC: Short circuit .................................................................................1179
		Failure code [DXHRKY] Blade lift up EPC: Hot short .....................................................................................1180
		Failure code [DXHSKA] Blade lift down EPC: Open ........................................................................................1182
		Failure code [DXHSKB] Blade lift down EPC: Short circuit ...............................................................................1184
		Failure code [DXHSKY] Blade lift down EPC: Hot short ...................................................................................1185
		Failure code [DXHTKA] Blade tilt left EPC: Open ........................................................................................1187
		Failure code [DXHTKB] Blade tilt left EPC: Short circuit ...............................................................................1189
		Failure code [DXHTKY] Blade tilt left EPC: Hot short ...................................................................................1190
		Failure code [DXHUKA] Blade tilt right EPC: Open .......................................................................................1192
		Failure code [DXHUKB] Blade tilt right EPC: Short circuit ..............................................................................1194
		Failure code [DXHUKY] Blade tilt right EPC: Hot short ..................................................................................1195
		Failure code [DXJ4KA] Weq lock Sol.: Open ..............................................................................................1197
		Failure code [DXJ4KB] Weq lock Sol.: Short circuit .....................................................................................1199
		Failure code [DXJCKA] Blade angle left EPC: Open .......................................................................................1201
		Failure code [DXJCKB] Blade angle left EPC: Short circuit ..............................................................................1202
		Failure code [DXJCKY] Blade angle left EPC: Hot short ..................................................................................1203
		Failure code [DXJDKA] Blade angle right EPC: Open ......................................................................................1205
		Failure code [DXJDKB] Blade angle right EPC: Short circuit .............................................................................1206
		Failure code [DXJDKY] Blade angle right EPC: Hot short .................................................................................1207
		Failure code [DXK1KA] Left HST motor EPC: Open .........................................................................................1209
		Failure code [DXK1KB] Left HST motor EPC: Short circuit ................................................................................1211
		Failure code [DXK1KY] Left HST motor EPC: Hot Short ....................................................................................1212
		Failure code [DXK2KA] Right HST motor EPC: Open ........................................................................................1214
		Failure code [DXK2KB] Right HST motor EPC: Short circuit ...............................................................................1216
		Failure code [DXK2KY] Right HST motor EPC: Hot Short ...................................................................................1217
	Troubleshooting of electrical system (E-mode) ..............................................................................................1219
		E-1 Engine does not start (Engine does not crank) ......................................................................................1219
		E-2 Manual preheating system does not work .............................................................................................1225
		E-3 Automatic preheating system does not work ..........................................................................................1228
		E-4 While preheating is working, preheating monitor does not light up ..................................................................1230
		E-5 When starting switch is turned to ON position, machine monitor displays nothing ....................................................1232
		E-6 When starting switch is turned to ON position (with engine stopped), basic check monitor lights up .................................1235
		E-7 Air cleaner clogging monitor lights up in yellow while engine is running ...........................................................1236
		E-8 Charge level monitor lights up in red while engine is running ......................................................................1237
		E-9 Engine coolant temperature monitor lights up in red while engine is running ........................................................1238
		E-10 Engine oil pressure monitor lights up in red while engine is running ..............................................................1239
		E-11 HST charge pressure monitor lights up in red while engine is running ..............................................................1240
		E-12 Hydraulic oil temperature monitor lights up in red while engine is running ........................................................1241
		E-13 HST oil filter clogging monitor lights up in red while engine is running ..........................................................1242
		E-14 Fuel level gauge does not indicate correct level ..................................................................................1243
		E-15 Engine coolant temperature gauge does not indicate correct temperature ............................................................1246
		E-16 Hydraulic oil temperature gauge does not indicate correct temperature .............................................................1247
		E-17 Operation mode does not change ....................................................................................................1248
		E-18 Service mode cannot be selected ...................................................................................................1249
		E-19 Operating customize switch does not display customize screen ......................................................................1250
		E-20 Modifying setting on customize screen does not change setting of machine ..........................................................1251
		E-21 Service meter is not displayed, while starting switch is in OFF position ..........................................................1252
		E-22 Work equipment does not operate ...................................................................................................1253
		E-23 Foot heater does not operate ......................................................................................................1255
		E-24 Horn does not sound ...............................................................................................................1260
		E-25 Horn does not stop sounding .......................................................................................................1262
		E-26 Backup alarm does not sound .......................................................................................................1263
		E-27 Backup alarm does not stop sounding ...............................................................................................1264
		E-28 Headlamp does not light up ........................................................................................................1265
		E-29 Rear lamp does not light up .......................................................................................................1268
		E-30 No wiper operates continuously or intermittently ..................................................................................1271
		E-31 Front wiper does not operate ......................................................................................................1273
		E-32 Rear wiper does not operate .......................................................................................................1275
		E-33 Left door wiper does not operate (failed in both continuous and intermittent operations) ..........................................1277
		E-34 Right door wiper does not operate (failed in both continuous and intermittent operations) .........................................1281
		E-35 Front washer does not operate .....................................................................................................1285
		E-36 Rear washer does not operate ......................................................................................................1287
		E-37 Left door washer does not operate .................................................................................................1289
		E-38 Right door washer does not operate ................................................................................................1291
		E-39 KOMTRAX system does not operate normally ..........................................................................................1293
	Troubleshooting of hydraulic and mechanical system (H-mode) ................................................................................1295
		Information described in troubleshooting table (H-mode) ................................................................................1295
		System chart of hydraulic and mechanical systems .......................................................................................1296
		Failure mode and cause table ...........................................................................................................1298
		H-1 Neither RH nor LH of tracks does not travel forward nor reverse (None of the travel system operates) ...............................1302
		H-2 Either RH or LH of track does not travel forward nor reverse (Only RH or LH of travel system operates) .............................1304
		H-3 Either RH or LH of track travel only forward or reverse (Only forward or reverse of RH or LH of travel system does not operate) ....1305
		H-4 Travel speed or power is low .......................................................................................................1307
		H-5 Travel speed range does not change .................................................................................................1308
		H-6 Shock is large when machine starts or stops ........................................................................................1309
		H-7 Machine deviates largely ...........................................................................................................1310
		H-8 Machine drift on a slope is large ..................................................................................................1312
		H-9 Engine stalls during travel or engine speed drops significantly ....................................................................1313
		H-10 Unusual noise is heard from around HST pump or motor ..............................................................................1314
		H-11 All work equipment do not operate .................................................................................................1315
		H-12 All work equipment operates slowly or lacks power .................................................................................1317
		H-13 Blade lift speed or power is low ..................................................................................................1318
		H-14 Blade tilt speed or power is low ..................................................................................................1319
		H-15 Blade angle speed or power is low .................................................................................................1320
		H-16 Time lag of blade lift is large ...................................................................................................1321
		H-17 Hydraulic drift of lifted blade is large ..........................................................................................1322
		H-18 Hydraulic drift of tilted blade is large ..........................................................................................1323
		H-19 Unusual noise is heard from around work equipment pump or control valve ...........................................................1324
		H-20 HST oil temperature (hydraulic oil temperature) rises too high ....................................................................1325
		H-21 Fans speed is abnormal (high, low, or no rotation) ................................................................................1327
		H-22 Unusual noise is heard from around fan ............................................................................................1329
	Troubleshooting of engine (S-mode) .........................................................................................................1330
		Information described in troubleshooting table (S mode) ................................................................................1330
		S-1 Engine does not crank when starting switch is turned to START position .............................................................1331
		S-2 Engine cranks but no exhaust smoke comes out .......................................................................................1332
		S-3 Fuel is being injected but engine does not start (misfiring: engine cranks but does not start) .....................................1333
		S-4 Engine startability is poor ........................................................................................................1334
		S-5 Engine does not pick up smoothly ...................................................................................................1336
		S-6 Engine stops during operation ......................................................................................................1338
		S-7 Engine runs rough or is unstable ...................................................................................................1340
		S-8 Engine lacks power .................................................................................................................1341
		S-9 KDPF gets clogged in a short time ..................................................................................................1343
		S-10 Engine oil consumption is excessive ...............................................................................................1345
		S-11 Engine oil becomes contaminated early .............................................................................................1346
		S-12 Fuel consumption is excessive .....................................................................................................1347
		S-13 Oil is in coolant (or coolant spurts or coolant level goes down) ..................................................................1348
		S-14 Oil pressure drops ................................................................................................................1349
		S-15 Fuel mixes into engine oil ........................................................................................................1350
		S-16 Water mixes into engine oil (milky) ...............................................................................................1351
		S-17 Coolant temperature rises too high (overheating) ..................................................................................1352
		S-18 Unusual noise is heard ............................................................................................................1353
		S-19 Vibration is excessive ............................................................................................................1354
		S-20 Air cannot be bled from fuel circuit ..............................................................................................1355
		S-21 Active regeneration is executed frequently ........................................................................................1356
		S-22 Active regeneration takes time ....................................................................................................1357
		S-23 White smoke is exhausted during active regeneration ...............................................................................1358
50 Disassembly and assembly ....................................................................................................................1359
	Table of contents ..........................................................................................................................1360
	Related information on disassembly and assembly ............................................................................................1362
		How to read this manual ................................................................................................................1362
		Coating materials list .................................................................................................................1364
		Special tools list .....................................................................................................................1368
		Sketches of special tools ..............................................................................................................1374
	Engine and cooling system ..................................................................................................................1387
		Removal and installation of supply pump assembly .......................................................................................1387
		Removal and installation of fuel injector assembly .....................................................................................1392
		Removal and installation of cylinder head assembly .....................................................................................1400
		Removal and installation of radiator assembly ..........................................................................................1416
		Removal and installation of aftercooler assembly .......................................................................................1420
		Removal and installation of hydraulic oil cooler assembly ..............................................................................1423
		Removal and installation of cooling fan drive assembly .................................................................................1426
		Removal and installation of cooling fan motor assembly .................................................................................1429
		Removal and installation of engine assembly ............................................................................................1431
		Disassembly and assembly of damper assembly ............................................................................................1438
		Removal and installation of engine front oil seal ......................................................................................1439
		Removal and installation of engine rear oil seal .......................................................................................1441
		Removal and installation of engine hood assembly .......................................................................................1444
		Removal and installation of fuel tank assembly .........................................................................................1447
		Removal and installation of KDPF assembly ..............................................................................................1451
		Disassembly and assembly of KDPF assembly ..............................................................................................1454
		Removal and installation of KCCV assembly ..............................................................................................1463
		Removal and installation of KVGT assembly ..............................................................................................1464
		Removal and installation of EGR (Exhaust Gas Recirculation) cooler assembly ............................................................1467
		Removal and installation of EGR (Exhaust Gas Recirculation) valve assembly .............................................................1470
		Removal and installation of belt for alternator and air conditioner compressor .........................................................1471
		Removal and installation of air cleaner assembly .......................................................................................1472
	Power train ................................................................................................................................1474
		Removal and installation of HST pump assembly ..........................................................................................1474
		Removal and installation of HST motor and final drive assembly .........................................................................1476
		Disassembly and assembly of final drive ................................................................................................1479
	Undercarriage and frame ....................................................................................................................1489
		Removal and installation of track frame assembly .......................................................................................1489
		Removal and installation of idler assembly .............................................................................................1493
		Disassembly and assembly of idler ......................................................................................................1495
		Removal and installation of recoil spring assembly .....................................................................................1499
		Disassembly and assembly of recoil spring ..............................................................................................1500
		Removal and installation of track roller assembly ......................................................................................1504
		Disassembly and assembly of track roller assembly ......................................................................................1506
		Removal and installation of carrier roller assembly ....................................................................................1509
		Disassembly and assembly of carrier roller assembly ....................................................................................1511
		Removal and installation of segment teeth ..............................................................................................1513
		Separation and connection of track shoe assembly (Standard type track shoe) ............................................................1514
		Separation and connection of track shoe assembly (PLUS type track shoe) ................................................................1519
		Overall disassembly and assembly of track shoe assembly (Standard type track shoe) .....................................................1520
		Overall disassembly and assembly of track shoe assembly (PLUS type track shoe) .........................................................1536
		Disassembly and assembly of one track link assembly in field (Standard type track shoe) ................................................1543
		Disassembly and assembly of one track link assembly in field (PLUS type track shoe) ....................................................1549
		Removal and installation of pivot shaft assembly .......................................................................................1554
		Removal and installation of equalizer bar assembly .....................................................................................1556
		Removal and installation of equalizer bar side bushing .................................................................................1558
	Hydraulic system ...........................................................................................................................1559
		Removal and installation of hydraulic tank assembly ....................................................................................1559
		Removal and installation of control valve assembly .....................................................................................1563
		Disassembly and assembly of hydraulic cylinder assembly ................................................................................1566
	Work equipment .............................................................................................................................1570
		Removal and installation of work equipment assembly ....................................................................................1570
		Removal and installation of blade assembly .............................................................................................1572
		Removal and installation of U-frame assembly ...........................................................................................1574
	Cab and its attachments ....................................................................................................................1576
		Removal and installation of ROPS cab assembly ..........................................................................................1576
		Removal and installation of operator's cab glass (adhesion glass) ......................................................................1580
		Removal and installation of operator's seat ............................................................................................1586
		Removal and installation of seat belt ..................................................................................................1587
		Removal and installation of foot heater assembly .......................................................................................1588
		Disassembly and assembly of foot heater assembly .......................................................................................1590
		Removal and installation of air conditioner unit assembly ..............................................................................1591
		Removal and installation of air conditioner compressor assembly ........................................................................1595
	Electrical system ..........................................................................................................................1597
		Removal and installation of machine monitor assembly ...................................................................................1597
		Removal and installation of engine controller assembly .................................................................................1598
		Removal and installation of HST controller assembly ....................................................................................1600
		Removal and installation of mass air flow and temperature sensor .......................................................................1601
		Removal and installation of KOMTRAX terminal ...........................................................................................1602
60 Maintenance standard ........................................................................................................................1603
	Table of contents ..........................................................................................................................1604
	Engine and cooling system ..................................................................................................................1605
		Engine mount ...........................................................................................................................1605
		Cooling fan motor ......................................................................................................................1606
		Oil cooler bypass and HST charge safety valve ..........................................................................................1608
	Power train ................................................................................................................................1609
		Damper .................................................................................................................................1609
		HST pump ...............................................................................................................................1610
		HST motor ..............................................................................................................................1612
		Charge pump ............................................................................................................................1613
		Solenoid valve .........................................................................................................................1614
		Final drive ............................................................................................................................1615
		Sprocket ...............................................................................................................................1616
		Full-scale drawing of sprocket tooth profile ...........................................................................................1617
	Undercarriage and frame ....................................................................................................................1619
		Suspension .............................................................................................................................1619
		Track frame and idler cushion ..........................................................................................................1621
		Idler ..................................................................................................................................1623
		Track roller ...........................................................................................................................1625
		Carrier roller .........................................................................................................................1629
		Track shoe .............................................................................................................................1631
	Hydraulic system ...........................................................................................................................1637
		Hydraulic tank .........................................................................................................................1637
		Work equipment and cooling fan pump ....................................................................................................1638
		Control valve ..........................................................................................................................1641
		Ripper PPC valve .......................................................................................................................1648
		Quick drop valve .......................................................................................................................1650
		Angle control EPC valve ................................................................................................................1652
	Work equipment .............................................................................................................................1653
		Blade ..................................................................................................................................1653
		Cutting edge and end bit ...............................................................................................................1656
		Ripper .................................................................................................................................1657
		Lift cylinder ..........................................................................................................................1659
		Tilt cylinder ..........................................................................................................................1660
		Angle cylinder .........................................................................................................................1661
		Ripper cylinder ........................................................................................................................1662
	Cab and its attachments ....................................................................................................................1663
		Cab mount ..............................................................................................................................1663
	Electrical system ..........................................................................................................................1664
		Electric steering lever ................................................................................................................1664
80 Appendix ....................................................................................................................................1665
	Table of contents ..........................................................................................................................1666
	Air conditioner components .................................................................................................................1667
		Precautions for refrigerant ............................................................................................................1667
		Air conditioner component ..............................................................................................................1668
		Configuration and function of refrigeration cycle ......................................................................................1671
		Outline of refrigeration cycle .........................................................................................................1672
		Air conditioner unit ...................................................................................................................1674
		Dual pressure switch ...................................................................................................................1678
		Pressure switch ........................................................................................................................1679
		Compressor .............................................................................................................................1680
		Condenser ..............................................................................................................................1681
		Receiver drier .........................................................................................................................1683
		Procedure for testing and troubleshooting ..............................................................................................1684
		Electrical circuit diagram .............................................................................................................1687
		System diagram .........................................................................................................................1688
		Parts and connectors layout ............................................................................................................1690
		Testing relays .........................................................................................................................1695
		Troubleshooting chart 1 ................................................................................................................1697
		Troubleshooting chart 2 ................................................................................................................1698
		Information described in troubleshooting table .........................................................................................1700
		A-1 Troubleshooting for condenser fan ..................................................................................................1701
		A-2 Troubleshooting for compressor and refrigerant system (Air is not cooled) ..........................................................1704
		A-3 Troubleshooting for blower motor system (No air comes out or air flow is abnormal) .................................................1708
		A-4 Troubleshooting for temperature control ............................................................................................1710
		Troubleshooting with gauge pressure ....................................................................................................1713
		Connection of service tool .............................................................................................................1716
		Precautions for disconnecting and connecting hoses and tubes in air conditioner circuit ................................................1718
		Handling of compressor oil .............................................................................................................1720
90 Diagrams and drawings .......................................................................................................................1723
	Table of contents ..........................................................................................................................1724
	Hydraulic circuit diagram ..................................................................................................................1725
		Symbols in hydraulic circuit diagram ...................................................................................................1725
		Hydraulic circuit diagram ..............................................................................................................1729
	Electric circuit diagram ...................................................................................................................1731
		Symbols in electric circuit diagram ....................................................................................................1731
		Electrical circuit diagram .............................................................................................................1735
INDEX...........................................................................................................................................1757

DESCRIPTION:

KOMATSU D61EX-23 D61PX-23 BULLDOZER SHOP MANUAL SEN06010-10 – PDF DOWNLOAD

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

S.S 26/12/24

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