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Komatsu WA470-6, WA480-6 Wheel Loader Shop Manual SEN00783-07 – PDF DOWNLOAD
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Description
Komatsu WA470-6, WA480-6 Wheel Loader Shop Manual
FILE DETAILS:
Komatsu WA470-6, WA480-6 Wheel Loader Shop Manual
Brands: Komatsu
Equipment Type: Wheel Loader
Manuals Type: Shop Manual
Machine Model: WA470-6, WA480-6
Serial Number: 85001 and up
Book Code: SEN00783-07
Language: English
Pages: 1765
File Format: Portable Document Format (PDF)
DESCRIPTION:
Komatsu WA470-6, WA480-6 Wheel Loader Shop Manual
How to read the shop manual:
1. Composition of shop manual:
This shop manual contains the necessary technical information for services performed in a workshop. For ease of understanding, the manual is divided into the following sections.
00. Index and foreword:
This section explains the shop manuals list, table of contents, safety, and basic information.
01. Specification:
This section explains the specifications of the machine.
10. Structure, function and maintenance standard:
This section explains the structure, function, and maintenance standard values of each component. The structure and function sub-section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting. The maintenance standard sub-section explains the criteria and remedies for disassembly and service.
20. Standard value table:
This section explains the standard values for new machine and judgement criteria for testing, adjusting, and troubleshooting. This standard value table is used to check the standard values in testing and adjusting and to judge parts in troubleshooting.
30. Testing and adjusting:
This section explains measuring instruments and measuring methods for testing and adjusting, and method of adjusting each part. The standard values and judgement criteria for testing and adjusting are explained in Testing and adjusting.
40. Troubleshooting:
This section explains how to find out failed parts and how to repair them. The troubleshooting is divided by failure modes. The “S mode” of the troubleshooting related to the engine may be also explained in the Chassis volume and Engine volume. In this case, see the Chassis volume.
50. Disassembly and assembly:
This section explains the special tools and procedures for removing, installing, disassembling, and assembling each component, as well as precautions for them. In addition, tightening torque and quantity and weight of coating material, oil, grease, and coolant necessary for the work are also explained.
90. Diagrams and drawings (chassis volume)/Repair and replacement of parts (engine volume):
- Chassis volume
This section gives hydraulic circuit diagrams and electrical circuit diagrams. - Engine volume
This section explains the method of reproducing, repairing, and replacing parts.
TABLE OF CONTENTS:
Komatsu WA470-6, WA480-6 Wheel Loader Shop Manual
COVER.................................................................................................................................................... 1 00 Index and foreword.................................................................................................................................... 0 Index................................................................................................................................................ 3 Composition of shop manual....................................................................................................................... 4 Table of contents................................................................................................................................ 6 Foreword and general information..................................................................................................................... 21 Safety notice.................................................................................................................................... 22 How to read the shop manual...................................................................................................................... 27 Explanation of terms for maintenance standard.................................................................................................... 29 Handling of electric equipment and hydraulic component........................................................................................... 31 Handling of connectors newly used for engines.................................................................................................... 40 How to read electric wire code................................................................................................................... 43 Precautions when carrying out operation.......................................................................................................... 46 Method of disassembling and connecting push-pull type coupler.................................................................................... 49 Standard tightening torque table................................................................................................................. 52 Conversion table................................................................................................................................. 56 01 Specification......................................................................................................................................... 0 Specification and technical data..................................................................................................................... 63 Specification dimension drawing.................................................................................................................. 65 Specifications................................................................................................................................... 66 Weight table..................................................................................................................................... 70 Table of fuel, coolant and lubricants............................................................................................................ 72 10 Structure, function and maintenance standard.......................................................................................................... 0 Engine and cooling system............................................................................................................................ 75 Engine mount and transmission mount.............................................................................................................. 76 Cooling system................................................................................................................................... 77 Cooling fan pump................................................................................................................................. 78 Cooling fan motor................................................................................................................................ 86 Power train.......................................................................................................................................... 93 Power train...................................................................................................................................... 95 Power train system diagram....................................................................................................................... 96 Drive shaft...................................................................................................................................... 98 Power train piping diagram....................................................................................................................... 99 Torque converter................................................................................................................................. 100 Transmission..................................................................................................................................... 108 Flow control valve............................................................................................................................... 125 Transmission control valve....................................................................................................................... 126 ECMV............................................................................................................................................. 130 Main relief valve and torque converter relief valve.............................................................................................. 136 Axle............................................................................................................................................. 138 Differential..................................................................................................................................... 142 Limited slip differential........................................................................................................................ 147 Final drive...................................................................................................................................... 154 Steering system...................................................................................................................................... 161 Steering piping diagram.......................................................................................................................... 162 Steering column.................................................................................................................................. 163 Steering pump.................................................................................................................................... 164 Steering valve................................................................................................................................... 177 Orbit-roll valve................................................................................................................................. 192 Stop valve....................................................................................................................................... 200 Steering relief valve............................................................................................................................ 201 Steering cylinder................................................................................................................................ 202 Emergency steering motor......................................................................................................................... 204 Emergency steering pump.......................................................................................................................... 205 Joystick steering lever linkage.................................................................................................................. 206 Steering electric lever.......................................................................................................................... 207 Joystick EPC valve............................................................................................................................... 208 Brake system......................................................................................................................................... 211 Brake piping diagram............................................................................................................................. 212 Charge valve..................................................................................................................................... 213 Brake valve...................................................................................................................................... 220 Accumulator (for brake).......................................................................................................................... 225 Slack adjuster................................................................................................................................... 226 Brake............................................................................................................................................ 228 Parking brake control............................................................................................................................ 233 Parking brake.................................................................................................................................... 234 Parking brake solenoid valve..................................................................................................................... 236 Emergency parking brake release valve............................................................................................................ 238 Undercarriage and frame.............................................................................................................................. 241 Axle mount and center hinge pin.................................................................................................................. 242 Tires............................................................................................................................................ 246 Hydraulic system, Part 1............................................................................................................................. 249 Hydraulic piping diagram......................................................................................................................... 250 Work equipment control lever linkage............................................................................................................. 253 Hydraulic tank................................................................................................................................... 256 Power train pump................................................................................................................................. 258 Work equipment pump.............................................................................................................................. 260 Work equipment control valve..................................................................................................................... 280 CLSS............................................................................................................................................. 291 Each function and operation of each valve........................................................................................................ 296 Hydraulic system, Part 2............................................................................................................................. 311 PPC valve........................................................................................................................................ 312 Accumulator (for PPC circuit).................................................................................................................... 318 Accumulator (for ECSS)........................................................................................................................... 319 Work equipment PPC cut-off solenoid valve........................................................................................................ 320 Work equipment....................................................................................................................................... 323 Work equipment linkage........................................................................................................................... 324 Bucket........................................................................................................................................... 327 Bucket positioner and boom kick-out.............................................................................................................. 328 Work equipment cylinder.......................................................................................................................... 334 Cab and its attachments.............................................................................................................................. 337 Cab.............................................................................................................................................. 339 Air conditioner.................................................................................................................................. 340 Electrical system, Part 1............................................................................................................................ 359 Machine monitor system........................................................................................................................... 360 Machine monitor.................................................................................................................................. 364 Electrical system, Part 2............................................................................................................................ 397 Electrical system (Transmission controller system)............................................................................................... 398 Transmission controller.......................................................................................................................... 430 Electrical system (Work equipment controller system)............................................................................................. 432 Work equipment controller........................................................................................................................ 438 Electrical system, Part 3............................................................................................................................ 441 Electric transmission control.................................................................................................................... 444 Combination switch............................................................................................................................... 446 Kickdown switch and hold switch.................................................................................................................. 448 Loadmeter cancel switch and loadmeter subtotal switch............................................................................................ 448 Multi-function knob.............................................................................................................................. 449 Joystick steering knob........................................................................................................................... 450 KOMTRAX system................................................................................................................................... 452 Engine starting circuit.......................................................................................................................... 454 Engine stopping circuit.......................................................................................................................... 456 Preheating circuit............................................................................................................................... 457 Engine power mode selector circuit............................................................................................................... 458 Engine output derating function.................................................................................................................. 459 Automatic warm-up function....................................................................................................................... 459 Parking brake circuit............................................................................................................................ 460 Sensor........................................................................................................................................... 462 20 Standard value table.................................................................................................................................. 0 Standard service value table......................................................................................................................... 473 Standard value table for engine.................................................................................................................. 474 Standard value table for chassis................................................................................................................. 475 30 Testing and adjusting................................................................................................................................. 0 Testing and adjusting, Part 1........................................................................................................................ 485 Tools for testing, adjusting, and troubleshooting................................................................................................ 487 Testing engine speed............................................................................................................................. 492 Testing exhaust gas color........................................................................................................................ 494 Testing exhaust temperature...................................................................................................................... 495 Adjusting valve clearance........................................................................................................................ 497 Testing compression pressure..................................................................................................................... 499 Testing blow-by pressure......................................................................................................................... 501 Testing engine oil pressure...................................................................................................................... 502 Testing EGR valve drive pressure................................................................................................................. 503 Testing intake air (boost) pressure.............................................................................................................. 504 Handling fuel system equipment................................................................................................................... 505 Releasing residual pressure in fuel system....................................................................................................... 505 Testing fuel pressure............................................................................................................................ 506 Testing fuel return and leak amount.............................................................................................................. 507 Bleeding air from fuel circuit................................................................................................................... 510 Testing fuel circuit for leakage................................................................................................................. 513 Handling of reduced cylinder mode operation...................................................................................................... 514 Handling of no injection cranking operation...................................................................................................... 514 Handling controller voltage circuit.............................................................................................................. 515 Check of muffler and muffler stack for looseness and damage...................................................................................... 516 Check of muffler function........................................................................................................................ 516 Check of installed condition of cylinder head and manifolds...................................................................................... 517 Check of engine piping for damage and looseness.................................................................................................. 517 Testing and adjusting air conditioner compressor belt tension.................................................................................... 518 Testing and adjusting alternator belt tension.................................................................................................... 519 Adjusting transmission speed sensor.............................................................................................................. 520 Adjusting directional lever length............................................................................................................... 521 Adjusting gear shift lever length................................................................................................................ 521 Testing directional lever........................................................................................................................ 522 Testing and adjusting power train oil pressure................................................................................................... 524 Procedure for flushing torque converter and transmission hydraulic circuit....................................................................... 539 Method of moving machine when transmission valve is broken....................................................................................... 540 Check of axle final drive for oil leakage........................................................................................................ 542 Check of drive shafts for looseness, play and damage............................................................................................. 542 Testing and adjusting steering stop valve........................................................................................................ 543 Testing and adjusting steering wheel............................................................................................................. 545 Testing steering oil pressure.................................................................................................................... 547 Bleeding air from steering circuit............................................................................................................... 550 Testing and adjusting, Part 2........................................................................................................................ 553 Testing hydraulic drive fan...................................................................................................................... 555 Bleeding air from hydraulic drive fan circuit.................................................................................................... 557 Testing brake pedal.............................................................................................................................. 559 Testing and adjusting brake pedal linkage........................................................................................................ 560 Testing brake performance........................................................................................................................ 561 Testing and adjusting accumulator charge pressure................................................................................................ 562 Testing wheel brake oil pressure................................................................................................................. 563 Testing wear of wheel brake disc................................................................................................................. 565 Bleeding air from wheel brake circuit............................................................................................................ 566 Releasing residual pressure in brake accumulator circuit......................................................................................... 567 Testing parking brake performance................................................................................................................ 567 Testing parking brake oil pressure............................................................................................................... 568 Testing wear of parking brake disc............................................................................................................... 570 Manual release method for parking brake.......................................................................................................... 571 Testing and adjusting work equipment control lever............................................................................................... 572 Testing and adjusting work equipment PPC oil pressure............................................................................................ 573 Testing and adjusting work equipment oil pressure................................................................................................ 576 Bleeding air from work equipment circuit......................................................................................................... 580 Releasing residual pressure in work equipment circuit............................................................................................ 581 Procedure for testing of nitrogen gas pressure and charging of nitrogen gas of ECSS (Electronically Controlled Suspension System) accumulator.... 582 Procedure for testing of nitrogen gas pressure and charging of nitrogen gas of brake accumulator................................................. 588 Testing and adjusting bucket positioner.......................................................................................................... 593 Testing and adjusting boom kick-out.............................................................................................................. 595 Checking proximity switch operation pilot lamp................................................................................................... 596 Procedure for testing diodes..................................................................................................................... 597 Preparation work for troubleshooting for electrical system....................................................................................... 598 Starting KOMTRAX terminal operations............................................................................................................. 603 Indicator lamps of KOMTRAX terminal.............................................................................................................. 608 Testing and adjusting, Part 3........................................................................................................................ 613 Adjusting machine monitor........................................................................................................................ 614 Adjusting replaced, reassembled or added sensor, controller, etc. with machine monitor........................................................... 615 Special functions of machine monitor (EMMS)...................................................................................................... 617 Pm-clinic inspection table....................................................................................................................... 680 40 Troubleshooting....................................................................................................................................... 0 Failure code table and fuse locations................................................................................................................ 685 Failure code table............................................................................................................................... 686 Fuse locations................................................................................................................................... 698 General information on troubleshooting............................................................................................................... 703 Points to remember when troubleshooting.......................................................................................................... 704 Sequence of events in troubleshooting............................................................................................................ 705 Testing before troubleshooting................................................................................................................... 706 Classification and procedures of troubleshooting................................................................................................. 707 Information contained in troubleshooting table................................................................................................... 711 Connection table for connector pin numbers....................................................................................................... 713 T- branch box and T- branch adapter table........................................................................................................ 749 Troubleshooting by failure code (Display of code), Part 1............................................................................................ 753 Failure code [1500L0] (TORQFLOW transmission: Double meshing).................................................................................... 755 Failure code [15SAL1] (ECMV F clutch: When command current is OFF, fill signal is ON)............................................................ 756 Failure code [15SALH] (ECMV F clutch: When command current is ON, fill signal is OFF)............................................................ 758 Failure code [15SBL1] (ECMV R clutch: When command current is OFF, fill signal is ON)............................................................ 760 Failure code [15SBLH] (ECMV R clutch: When command current is ON, fill signal is OFF)............................................................ 762 Failure code [15SEL1] (ECMV 1st clutch: When command current is OFF, fill signal is ON).......................................................... 764 Failure code [15SELH] (ECMV 1st clutch: When command current is ON, fill signal is OFF).......................................................... 766 Failure code [15SFL1] (ECMV 2nd clutch: When command current is OFF, fill signal is ON).......................................................... 768 Failure code [15SFLH] (ECMV 2nd clutch: When command current is ON, fill signal is OFF).......................................................... 770 Failure code [15SGL1] (ECMV 3rd clutch: When command current is OFF, fill signal is ON).......................................................... 772 Failure code [15SGLH] (ECMV 3rd clutch: When command current is ON, fill signal is OFF).......................................................... 774 Failure code [15SHL1] (ECMV 4th clutch: When command current is OFF, fill signal is ON).......................................................... 776 Failure code [15SHLH] (ECMV 4th clutch: When command current is ON, fill signal is OFF).......................................................... 778 Failure code [2F00MA] (Parking brake: Malfunction)............................................................................................... 780 Failure code [2G43ZG] (Accumulator: Low oil pressure)............................................................................................ 782 Failure code [44K0L4] (Bucket positioner: ON/OFF signals disagree)............................................................................... 784 Troubleshooting by failure code (Display of code), Part 2............................................................................................ 789 Failure code [AA1ANX] (Air cleaner: Clogging).................................................................................................... 792 Failure code [AB00L6] (Alternator: Signal disagrees with operating state of engine).............................................................. 794 Failure code [AB00MA] (Alternator: Malfunction).................................................................................................. 796 Failure code [B@BAZG] (Rotation derating by low engine oil pressure)............................................................................. 798 Failure code [B@BAZK] (Engine oil: Low level).................................................................................................... 801 Failure code [B@BCNS] (Coolant: Overheating)..................................................................................................... 802 Failure code [B@BCZK] (Coolant: Low level)....................................................................................................... 804 Failure code [B@C7NS] (Brake oil: Overheating)................................................................................................... 806 Failure code [b@CENS] (Torque converter oil: Overheating)........................................................................................ 808 Failure code [B@CENS] (Torque converter oil: Overheating)........................................................................................ 810 Failure code [B@HANS] (Hydraulic oil: Overheating)............................................................................................... 812 Failure code [CA111] (Abnormality in engine controller).......................................................................................... 814 Failure code [CA115] (Engine Ne or Bkup speed sensor error)...................................................................................... 817 Failure code [CA122] (Charge pressure sensor high error)......................................................................................... 818 Failure code [CA123] (Charge pressure sensor low error).......................................................................................... 820 Failure code [CA131] (Throttle sensor high error)................................................................................................ 822 Failure code [CA132] (Throttle sensor low error)................................................................................................. 824 Failure code [CA135] (Engine oil pressure sensor high error)..................................................................................... 826 Failure code [CA141] (Engine oil pressure sensor low error)...................................................................................... 828 Failure code [CA144] (Coolant sensor high error)................................................................................................. 830 Failure code [CA145] (Coolant sensor low error).................................................................................................. 832 Failure code [CA153] (Charge temperature sensor high error)...................................................................................... 834 Failure code [CA154] (Charge temperature sensor low error)....................................................................................... 836 Failure code [CA187] (Sensor power supply 2 low error)........................................................................................... 838 Failure code [CA221] (Atmospheric pressure sensor high error).................................................................................... 839 Failure code [CA222] (Atmospheric pressure sensor low error)..................................................................................... 841 Failure code [CA227] (Sensor power supply 2 high error).......................................................................................... 842 Failure code [CA234] (Engine overspeed).......................................................................................................... 844 Failure code [CA238] (Ne speed sensor power supply error)........................................................................................ 846 Troubleshooting by failure code (Display of code), Part 3............................................................................................ 849 Failure code [CA263] (Fuel temperature sensor high error)........................................................................................ 852 Failure code [CA265] (Fuel temperature sensor low error)......................................................................................... 854 Failure code [CA271] (PCV1 Short circuit)........................................................................................................ 856 Failure code [CA272] (PCV1 Disconnection)........................................................................................................ 858 Failure code [CA273] (PCV2 Short circuit)........................................................................................................ 860 Failure code [CA274] (PCV2 Disconnection)........................................................................................................ 862 Failure code [CA322] (Injector #1 open/short error).............................................................................................. 864 Failure code [CA323] (Injector #5 open/short error).............................................................................................. 866 Failure code [CA324] (Injector #3 open/short error).............................................................................................. 868 Failure code [CA325] (Injector #6 open/short error).............................................................................................. 870 Failure code [CA331] (Injector #2 open/short error).............................................................................................. 872 Failure code [CA332] (Injector #4 open/short error).............................................................................................. 874 Failure code [CA342] (Calibration code inconsistency)............................................................................................ 876 Failure code [CA351] (Injectors drive circuit error)............................................................................................. 877 Failure code [CA352] (Sensor power supply 1 low error)........................................................................................... 879 Failure code [CA386] (Sensor power supply 1 high error).......................................................................................... 880 Failure code [CA431] (Idle validation switch error).............................................................................................. 882 Failure code [CA432] (Idle validation action error).............................................................................................. 884 Failure code [CA441] (Battery voltage low error)................................................................................................. 886 Failure code [CA442] (Battery voltage high error)................................................................................................ 889 Failure code [CA449] Common rail pressure high error 2........................................................................................... 891 Failure code [CA451] (Common rail pressure sensor high error).................................................................................... 892 Failure code [CA452] (Common rail pressure sensor low error)..................................................................................... 894 Failure code [CA553] (Common rail pressure high error 1)......................................................................................... 895 Failure code [CA554] (Common rail pressure sensor in-range error)................................................................................ 896 Failure code [CA559] (Supply pump pressure very low error)....................................................................................... 897 Failure code [CA689] (Engine Ne speed sensor error).............................................................................................. 901 Failure code [CA731] (Engine Bkup speed sensor phase error)...................................................................................... 903 Failure code [CA757] (All continuous data lost error)............................................................................................ 903 Failure code [CA778] (Engine Bkup speed sensor error)............................................................................................ 904 Failure code [CA1228] (EGR valve servo error 1).................................................................................................. 906 Failure code [CA1625] (EGR valve servo error 2).................................................................................................. 907 Failure code [CA1633] (KOMNET datalink timeout error)............................................................................................ 908 Failure code [CA2185] (Throttle sensor supply voltage high error)................................................................................ 910 Failure code [CA2186] (Throttle sensor power supply low error)................................................................................... 911 Troubleshooting by failure code (Display of code), Part 4............................................................................................ 913 Failure code [CA2249] (Supply pump pressure very low error 2).................................................................................... 915 Failure code [CA2271] (EGR valve lift sensor high error)......................................................................................... 916 Failure code [CA2272] (EGR valve lift sensor low error).......................................................................................... 918 Failure code [CA2351] (EGR valve solenoid operation short circuit)............................................................................... 919 Failure code [CA2352] (EGR valve solenoid operation disconnect).................................................................................. 921 Failure code [CA2555] (Intake heater relay disconnection error).................................................................................. 922 Failure code [CA2556] (Intake heater relay short circuit error).................................................................................. 924 Failure code [D150KA] (Emergency steering relay: Disconnection).................................................................................. 926 Failure code [D150KB] (Emergency steering relay: Short circuit).................................................................................. 928 Failure code [D150KY] (Emergency steering relay: Short circuit with power supply line)........................................................... 930 Failure code [D160KA] (Backup lamp relay: Disconnection)......................................................................................... 932 Failure code [D160KB] (Backup lamp relay: Short circuit)......................................................................................... 934 Failure code [D191KA] (Joystick steering neutral safety relay: Disconnection).................................................................... 936 Failure code [D191KB] (Joystick steering neutral safety relay: Short circuit).................................................................... 938 Failure code [D191KY] (Joystick steering neutral safety relay: Short circuit with power supply line)............................................. 940 Failure code [D192KA] (ECSS solenoid: Disconnection)............................................................................................. 942 Failure code [D192KB] (ECSS solenoid: Short circuit)............................................................................................. 943 Failure code [D192KY] (ECSS solenoid: Short circuit with power supply line)...................................................................... 944 Failure code [D193KA] (Joystick steering solenoid cut-off relay: Disconnection).................................................................. 946 Failure code [D193KB] (Joystick steering solenoid cut-off relay: Short circuit).................................................................. 948 Failure code [D193KY] (Joystick steering solenoid cut-off relay: Short circuit with power supply line)........................................... 950 Failure code [D5ZHKA] (Terminal C signal: Disconnection)......................................................................................... 953 Failure code [D5ZHKB] (Terminal C signal: Short circuit)......................................................................................... 957 Failure code [D5ZHKZ] (Terminal C signal: Disconnection or short circuit)........................................................................ 960 Failure code [D5ZHL6] (Terminal C signal: Signal does not match engine running or stopped state)................................................. 965 Failure code [DA80L4] (Auto grease controller: ON/OFF signals disagree).......................................................................... 968 Failure code [DAF3KK] (Machine monitor: Low source voltage (input)).............................................................................. 970 Failure code [DAF5KP] (Machine monitor: Low output voltage)...................................................................................... 972 Failure code [DAFRKR] (CAN communication with machine monitor: Defective communication (Abnormality in target component system))................. 976 Troubleshooting by failure code (Display of code), Part 5............................................................................................ 979 Failure code [DAQ0KK] (Transmission controller: Low source voltage) ............................................................................. 981 Failure code [DAQ0KT] (Transmission controller: Abnormality in controller)....................................................................... 983 Failure code [DAQ1KA] (Terminal ACC input: Disconnection)........................................................................................ 985 Failure code [DAQ2KK] (Transmission controller load power supply line: Low source voltage (input))............................................... 988 Failure code [DAQ9KQ] (Transmission controller model selection: Disagreement of model selection signals)......................................... 990 Failure code [DAQRKR] (CAN communication with transmission controller: Defective communication (Abnormality in target component system))......... 991 Failure code [DAQRMA] (Transmission controller option setting: Malfunction)...................................................................... 993 Failure code [DB2RKR] (CAN communication with engine controller: Defective communication (Abnormality in target component system)................ 994 Failure code [DB90KK] Work equipment controller: Low source voltage (input)...................................................................... 996 Failure code [DB90KT] Work equipment controller: Abnormality in controller....................................................................... 998 Failure code [DB92KK] Work equipment controller load power supply line: Low source voltage (input)............................................... 999 Failure code [DB95KX] Work equipment controller power supply output: Out of input signal range...................................................1001 Failure code [DB99KQ] (Work equipment controller model selection: Disagreement in model selection signals).......................................1004 Failure code [DB9RKR] CAN communication with work equipment controller: Defective communication (Abnormality in target component system).........1005 Failure code [DB9RMA] (Work equipment controller option setting: Malfunction)....................................................................1007 Failure code [DB9RMC] (CAN communication with transmission controller: Defective operation)......................................................1008 Failure code [DD15LD] ■ switch (Panel switch 1): Switch is kept pressed for long time............................................................1012 Failure code [DD16LD] ◇ switch (Panel switch 2): Switch is kept pressed for long time............................................................1014 Failure code [DD17LD] < switch (Panel switch 3): Switch is kept pressed for long time............................................................1016 Failure code [DD18LD] > switch (Panel switch 4): Switch is kept pressed for long time............................................................1018 Failure code [DD1ALD] Remote positioner raise/lower set switch (raise): Switch is kept pressed for long time.....................................1020 Failure code [DD1BLD] Remote positioner raise/lower set switch (lower): Switch is kept pressed for long time.....................................1022 Failure code [DD1CLD] Load meter subtotal switch: Switch is kept pressed for long time...........................................................1024 Failure code [DD1FLD] Load meter mode selector switch (A/B): Switch is kept pressed for long time................................................1026 Failure code [DD1GLD] Load meter mode selector switch (+/–): Switch is kept pressed for long time................................................1028 Failure code [DD1HLD] (Load meter display selector switch: Switch is kept pressed for long time).................................................1030 Failure code [DD1NLD] (Fan reverse switch: Switch is kept pressed for long time).................................................................1032 Failure code [DD1NL4] (Fan automatic reverse switch: Switch is kept pressed for long time).......................................................1034 Failure code [DDB6L4] (Parking brake switch (Neutralizer): ON/OFF signals disagree)..............................................................1036 Failure code [DDD1LD] (Remote positioner bucket angle set switch: Switch is kept pressed for long time)..........................................1040 Troubleshooting by failure code (Display of code), Part 6............................................................................................1043 Failure code [DDE5MA] (Emergency steering drive switch: Malfunction).............................................................................1046 Failure code [DDK3KA] (Right FNR switch: Disconnection)..........................................................................................1048 Failure code [DDK4KA] (Joystick steering FNR switch: Disconnection)..............................................................................1051 Failure code [DDK5L4] (Joystick steering shift-up/down switch: ON/OFF signals disagree)..........................................................1054 Failure code [DDK6KA] (FNR lever switch: Disconnection)..........................................................................................1056 Failure code [DDK6KB] (FNR lever switch: Short circuit)..........................................................................................1060 Failure code [DDS5KA] (Steering pressure switch: Disconnected)...................................................................................1062 Failure code [DDS5KB] (Steering pressure switch: Short circuit)..................................................................................1064 Failure code [DDS5L6] (Steering: Low oil pressure)...............................................................................................1066 Failure code [DDT0L4] (Shift mode selector switch: ON/OFF signals disagree)......................................................................1068 Failure code [DDT4LD] (Transmission cut-off set switch: Switch is kept pressed for long time)....................................................1070 Failure code [DDW9LD] (Kick-down switch: Switch is kept pressed for long time)...................................................................1072 Failure code [DDWLLD] (Hold switch: Switch is kept pressed for long time)........................................................................1074 Failure code [DDY0LD] (Load meter cancel switch: Switch is kept pressed for long time)...........................................................1076 Failure code [DF10KA] (Transmission shift lever switch: Disconnected)............................................................................1078 Failure code [DF10KB] (Transmission shift lever switch: Short circuit)...........................................................................1082 Failure code [DGF1KA] (Transmission oil temperature sensor: Disconnected)........................................................................1084 Failure code [DGF1KB] (Transmission oil temperature sensor: Short circuit).......................................................................1086 Failure code [DGH2KX] (Hydraulic oil temperature sensor: Out of input signal range)..............................................................1088 Failure code [DGR2KA] (Rear brake oil temperature sensor: Disconnected)..........................................................................1090 Failure code [DGR2KX] (Rear brake oil temperature sensor: Out of input signal range).............................................................1092 Failure code [DGT1KX] (Torque converter oil temperature sensor: Out of input signal range).......................................................1094 Failure code [DH21KA] (Loader pump pressure sensor: Disconnection)...............................................................................1096 Failure code [DH21KB] (Loader pump pressure sensor: Power supply line short).....................................................................1098 Troubleshooting by failure code (Display of code), Part 7............................................................................................1101 Failure code [DHPCKX] (Lift arm cylinder bottom pressure sensor: Out of input signal range)......................................................1104 Failure code [DHPDKX] (Lift arm cylinder head pressure sensor: Out of input signal range)........................................................1106 Failure code [DHT1KX] (Transmission cut-off pressure sensor: Out of input signal range)..........................................................1108 Failure code [DHT8KA] (Steering pump pressure sensor: Disconnection).............................................................................1110 Failure code [DHT8KB] (Steering pump pressure sensor: Short circuit).............................................................................1112 Failure code [DK59KA] (Lift arm EPC lever potentiometer (Main): Disconnection)...................................................................1114 Failure code [DK59KY] (Lift arm EPC lever potentiometer (Main): Short circuit with power supply line)............................................1117 Failure code [DK59L8] (Lift arm EPC lever potentiometer (Main): Analog signals disagree).........................................................1120 Failure code [DK5AKA] (Lift arm EPC lever potentiometer (Sub): Disconnection)....................................................................1123 Failure code [DK5AKY] (Lift arm EPC lever potentiometer (Sub): Short circuit with power supply line).............................................1126 Failure code [DK5BKA] (Bucket EPC lever potentiometer (Main): Disconnection).....................................................................1129 Failure code [DK5BKY] (Bucket EPC lever potentiometer (Main): Short circuit with power supply line)..............................................1132 Failure code [DK5BL8] (Bucket EPC lever potentiometer (Main): Analog signals disagree)...........................................................1135 Failure code [DK5CKA] (Bucket EPC lever potentiometer (Sub): Disconnection)......................................................................1138 Failure code [DK5CKY] (Bucket EPC lever potentiometer (Sub): Short circuit with power supply line)...............................................1141 Troubleshooting by failure code (Display of code), Part 8............................................................................................1145 Failure code [DK5FKA] (Joystick steering EPC lever potentiometer (Main): Disconnection)..........................................................1147 Failure code [DK5FKY] (Joystick steering EPC lever potentiometer (Main): Short circuit with power supply line)...................................1150 Failure code [DK5GKA] (Joystick steering EPC lever potentiometer (Sub): Disconnection)...........................................................1152 Failure code [DK5GKY] (Joystick steering EPC lever potentiometer (Sub): Short circuit with power supply line)....................................1155 Failure code [DK5FL8] (Joystick steering EPC lever potentiometer (Main): Analog signals disagree)................................................1157 Failure code [DKA0KA] (Lift arm angle sensor: Disconnection).....................................................................................1160 Failure code [DKA0KY] (Lift arm angle sensor: Short circuit with power supply line)..............................................................1162 Failure code [DKA0L0] (Lift arm angle sensor: Double meshing)....................................................................................1164 Failure code [DLT3KA] (Transmission output shaft speed sensor: Disconnection)....................................................................1166 Failure code [DLT3LC] (Transmission output shaft speed sensor: Out of input signal range)........................................................1168 Failure code [DT20KB] (Transmission cut-off indicator lamp: Short circuit).......................................................................1170 Failure code [DUM1KB] (Remote positioner raise set indicator lamp: Short circuit)................................................................1172 Failure code [DUM2KB] (Remote positioner lower set indicator lamp: Short circuit)................................................................1174 Failure code [DV00KB] (Alarm buzzer: Short circuit)..............................................................................................1176 Failure code [DW4PKA] (Lift arm raise EPC solenoid: Disconnection)...............................................................................1178 Failure code [DW4PKB] (Lift arm raise EPC solenoid: Short circuit)...............................................................................1180 Failure code [DW4PKY] (Lift arm raise EPC solenoid: Short circuit with power supply line)........................................................1182 Failure code [DW4QKA] (Lift arm lower EPC solenoid: Disconnection)...............................................................................1184 Failure code [DW4QKB] (Lift arm lower EPC solenoid: Short circuit)...............................................................................1185 Failure code [DW4QKY] (Lift arm lower EPC solenoid: Short circuit with power supply line)........................................................1186 Failure code [DW4RKA] (Bucket tilt EPC solenoid: Disconnection)..................................................................................1188 Failure code [DW4RKB] (Bucket tilt EPC solenoid: Short circuit)..................................................................................1189 Failure code [DW4RKY] (Bucket tilt EPC solenoid: Short circuit with power supply line)...........................................................1190 Troubleshooting by failure code (Display of code), Part 9............................................................................................1193 Failure code [DW4SKA] (Bucket dump EPC solenoid: Disconnection)..................................................................................1195 Failure code [DW4SKB] (Bucket dump EPC solenoid: Short circuit)..................................................................................1196 Failure code [DW4SKY] (Bucket dump EPC solenoid: Short circuit with power supply line)...........................................................1197 Failure code [DW7BKA] (Fan reverse solenoid: Disconnection)......................................................................................1199 Failure code [DW7BKB] (Fan reverse solenoid: Short circuit)......................................................................................1200 Failure code [DW7BKY] (Fan reverse solenoid: Short circuit with power supply line)...............................................................1201 Failure code [DW7DKA] (Hydraulic drive fan neutral solenoid: Disconnection)......................................................................1203 Failure code [DW7DKB] (Hydraulic drive fan neutral solenoid: Short circuit)......................................................................1204 Failure code [DW7DKY] (Hydraulic drive fan neutral solenoid: Short circuit with power supply line)...............................................1205 Failure code [DWM1KA] (Work equipment neutral lock solenoid: Disconnection)......................................................................1206 Failure code [DWM1KB] (Work equipment neutral lock solenoid: Short circuit)......................................................................1208 Failure code [DWM1KY] (Work equipment neutral lock solenoid: Short circuit with power supply line)...............................................1210 Failure code [DWN6KA] (Lift arm raise magnet detent solenoid: Disconnection).....................................................................1212 Failure code [DWN6KB] (Lift arm raise magnet detent solenoid: Short circuit).....................................................................1214 Failure code [DWN6KY] (Lift arm raise magnet detent solenoid: Short circuit with power supply line)..............................................1216 Failure code [DWN7KA] (Lift arm float magnet detent solenoid: Disconnection).....................................................................1218 Failure code [DWN7KB] (Lift arm float magnet detent solenoid: Short circuit).....................................................................1220 Failure code [DWN7KY] (Lift arm float magnet detent solenoid: Short circuit with power supply line)..............................................1222 Failure code [DWN8KA] (Bucket tilt magnet detent solenoid: Disconnection)........................................................................1224 Failure code [DWN8KB] (Bucket tilt magnet detent solenoid: Short circuit)........................................................................1226 Failure code [DWN8KY] (Bucket tilt magnet detent solenoid: Shorted with the power source)........................................................1228 Failure code [DX16KA] (Fan pump EPC solenoid: Disconnection).....................................................................................1230 Failure code [DX16KB] (Fan pump EPC solenoid: Short circuit).....................................................................................1231 Failure code [DX16KY] (Fan pump EPC solenoid: Short circuit with power supply line)..............................................................1232 Failure code [DXH1KA] (Lockup ECMV solenoid: Disconnection)......................................................................................1234 Failure code [DXH1KB] (Lockup ECMV solenoid: Short circuit)......................................................................................1236 Failure code [DXH1KY] (Lockup ECMV solenoid: Short circuit with power supply line)...............................................................1238 Failure code [DXH4KA] (1st clutch ECMV solenoid: Disconnection)..................................................................................1240 Failure code [DXH4KB] (1st clutch ECMV solenoid: Short circuit)..................................................................................1242 Failure code [DXH4KY] (1st clutch ECMV solenoid: Short circuit with power supply line)...........................................................1244 Troubleshooting by failure code (Display of code), Part 10...........................................................................................1247 Failure code [DXH5KA] (2nd clutch ECMV solenoid: Disconnection)..................................................................................1250 Failure code [DXH5KB] (2nd clutch ECMV solenoid: Short circuit)..................................................................................1252 Failure code [DXH5KY] (2nd clutch ECMV solenoid: Short circuit with power supply line)...........................................................1254 Failure code [DXH6KA] (3rd clutch ECMV solenoid: Disconnection)..................................................................................1256 Failure code [DXH6KB] (3rd clutch ECMV solenoid: Short circuit)..................................................................................1258 Failure code [DXH6KY] (3rd clutch ECMV solenoid: Short circuit with power supply line)...........................................................1260 Failure code [DXH7KA] (R clutch ECMV solenoid: Disconnection)....................................................................................1262 Failure code [DXH7KB] (R clutch ECMV solenoid: Short circuit)....................................................................................1264 Failure code [DXH7KY] (R clutch ECMV solenoid: Short circuit with power supply line).............................................................1266 Failure code [DXH8KA] (F clutch ECMV solenoid: Disconnection)....................................................................................1268 Failure code [DXH8KB] (F clutch ECMV solenoid: Short circuit)....................................................................................1270 Failure code [DXH8KY] (F clutch ECMV solenoid: Short circuit with power supply line).............................................................1272 Failure code [DXHHKA] (4th clutch ECMV solenoid: Disconnection)..................................................................................1274 Failure code [DXHHKB] (4th clutch ECMV solenoid: Short circuit)..................................................................................1276 Failure code [DXHHKY] (4th clutch ECMV solenoid: Short circuit with power supply line)...........................................................1278 Failure code [DXHLKA] (Joystick steering right EPC solenoid: Disconnection)......................................................................1280 Failure code [DXHLKB] (Joystick steering right EPC solenoid: Short circuit)......................................................................1282 Failure code [DXHLKY] (Joystick steering right EPC solenoid: Short circuit with power supply line)...............................................1284 Failure code [DXHMKA] (Joystick steering left EPC solenoid: Disconnection).......................................................................1286 Failure code [DXHMKB] (Joystick steering left EPC solenoid: Short circuit).......................................................................1288 Failure code [DXHMKY] (Joystick steering left EPC solenoid: Short circuit with power supply line)................................................1290 Failure code [DY30MA] Motor-driven emergency steering pump failure (During operation of machine).................................................1292 Failure code [DY30MC] Motor-driven emergency steering pump failure (Malfunction in manual mode)..................................................1295 Failure code [DY30ME] Emergency steering: Operating for more than 1 minute.......................................................................1298 Troubleshooting of electrical system (E-mode)........................................................................................................1303 Installing positions of fuses....................................................................................................................1305 Information in troubleshooting table.............................................................................................................1308 E-1 Engine does not start........................................................................................................................1310 E-2 Wiper does not operate.......................................................................................................................1316 E-3 Windshield washer does not operate...........................................................................................................1320 E-4 Headlamp, clearance lamp, tail lamp, and license lamp do not light up or go off..............................................................1323 E-5 Working lamp does not light up or go off.....................................................................................................1331 E-6 Turn signal lamp and hazard lamp do not light up or go off...................................................................................1336 E-7 Brake lamp does not light or it keeps lighting up............................................................................................1342 E-8 Backup lamp does not light or it keeps lighting up...........................................................................................1344 E-9 Backup buzzer does not sound or it keeps sounding............................................................................................1346 E-10 Horn does not sound or it keeps sounding....................................................................................................1348 E-11 Alarm buzzer does not sound or it keeps sounding............................................................................................1350 E-12 Air conditioner does not operate or stop....................................................................................................1352 E-13 The KOMTRAX system does not work properly...................................................................................................1355 E-14 When kick-down switch is turned ON, kick-down operation does not start......................................................................1358 E-15 When hold switch is pressed, holding operation does not start...............................................................................1360 E-16 Transmission is kept in neutral, or brake drags when directional lever is operated while parking brake is applied...........................1362 E-17 Transmission cut-off mode cannot be set or reset............................................................................................1364 E-18 Transmission cut-off set cannot be reset....................................................................................................1366 E-19 FNR switch mode cannot be set or reset......................................................................................................1368 E-20 Fan reverse function cannot be used or reset................................................................................................1370 E-21 Discharge from loader pump does not rise from minimum level.................................................................................1372 E-22 ECSS function cannot be used or reset.......................................................................................................1374 E-23 When parking brake is turned ON, parking brake indicator lamp does not light up.............................................................1376 E-24 When emergency brake operates, brake oil pressure caution lamp does not operate.............................................................1380 E-25 Air cleaner clogging indicator lamp does not light up.......................................................................................1382 E-26 Radiator coolant level caution lamp does not light up.......................................................................................1384 E-27 Hydraulic oil temperature gauge does not rise and hydraulic oil temperature caution lamp does not light up..................................1385 E-28 Torque converter oil temperature gauge does not rise and torque converter oil temperature caution lamp does not light up....................1386 E-29 Steering oil pressure caution lamp does not light up........................................................................................1388 E-30 Abnormality in ■ switch (panel switch 1) input..............................................................................................1390 E-31 Abnormality in ◇ switch (panel switch 2) input..............................................................................................1392 E-32 Abnormality in < switch (panel switch 3) input..............................................................................................1394 E-33 Abnormality in > switch (panel switch 4) input..............................................................................................1396 Troubleshooting of hydraulic and mechanical system (H-mode)..........................................................................................1399 Method of using troubleshooting chart............................................................................................................1401 Table of failure modes and causes................................................................................................................1404 H-1 The machine does not start...................................................................................................................1408 H-2 Torque converter lockup is not switched off (engine stalls) [Machine with lockup clutch (if equipped)].......................................1410 H-3 Torque converter lockup is not switched on [Machine with lockup clutch (if equipped)]........................................................1411 H-4 The travel speed is slow, the thrusting force is weak, the uphill traveling power is weak, and the gear is not shifted.......................1412 H-5 Shocks are large at the times of starting and shifting gear..................................................................................1414 H-6 Time lag is large at the times of starting and shifting gear.................................................................................1416 H-7 The torque converter oil temperature is high.................................................................................................1418 H-8 Steering does not turn.......................................................................................................................1419 H-9 Steering does not turn [Machine with joystick steering (if equipped)]........................................................................1420 H-10 Steering response is poor...................................................................................................................1421 H-11 Turning, response of steering is poor [machine with joystick steering (if equipped)]........................................................1422 H-12 Steering is heavy...........................................................................................................................1423 H-13 When machine turns, it shakes or makes large shocks.........................................................................................1424 H-14 When machine turns, it shakes or makes large shocks [machine with joystick steering (if equipped)]..........................................1425 H-15 The wheel brake does not work or does not work well.........................................................................................1426 H-16 The wheel brake is not released or it drags.................................................................................................1427 H-17 The parking brake does not work or does not work well.......................................................................................1428 H-18 The parking brake is not released or it drags (including emergency release system)..........................................................1429 H-19 Lift arm does not rise......................................................................................................................1430 H-20 Lift arm speed is low or rising force of lift arm is insufficient...........................................................................1431 H-21 When rising, the lift arm comes to move slowly at specific height...........................................................................1432 H-22 The lift arm cylinder cannot hold down the bucket (Bucket floats)...........................................................................1432 H-23 Hydraulic drifts of the lift arm is large...................................................................................................1432 H-24 The lift arm wobbles during operation.......................................................................................................1432 H-25 Bucket does not tilt back...................................................................................................................1433 H-26 Bucket speed is low or tilting back force is insufficient...................................................................................1434 H-27 The bucket comes to operate slowly in the midst of tilting-back.............................................................................1435 H-28 The bucket cylinder cannot hold down the bucket.............................................................................................1435 H-29 Hydraulic drifts of the bucket is large.....................................................................................................1435 H-30 The bucket wobbles during travel with cargo (The work equipment valve is set to “HOLD”).....................................................1435 H-31 Lift arm and bucket control levers do not move smoothly and are heavy.......................................................................1436 H-32 During operation of the machine, engine speed lowers remarkably or engine stalls............................................................1437 H-33 Large shock is made when work equipment starts and stops....................................................................................1437 H-34 When work equipment circuit is relieved singly, other work equipment moves..................................................................1437 H-35 ECSS does not operate, and pitching, bouncing occur.........................................................................................1438 Troubleshooting of engine (S-mode)...................................................................................................................1441 Method of using troubleshooting chart............................................................................................................1443 S-1 Starting performance is poor.................................................................................................................1446 S-2 Engine does not start........................................................................................................................1448 S-3 Engine does not pick up smoothly.............................................................................................................1452 S-4 Engine stops during operation................................................................................................................1453 S-5 Engine does not rotate smoothly..............................................................................................................1454 S-6 Engine lacks output (or lacks power).........................................................................................................1455 S-7 Exhaust smoke is black (Incomplete combustion)...............................................................................................1456 S-8 Oil is consumed much (or exhaust gas color is blue)..........................................................................................1457 S-9 Engine oil becomes contaminated quickly......................................................................................................1458 S-10 Fuel consumption is excessive...............................................................................................................1459 S-11 Coolant contains oil (blows back or reduces)................................................................................................1460 S-12 Oil pressure drops..........................................................................................................................1461 S-13 Oil level rises (Water, fuel in oil)........................................................................................................1462 S-14 Coolant temperature rises too high (Overheating)............................................................................................1464 S-15 Abnormal noise is made......................................................................................................................1465 S-16 Vibration is excessive......................................................................................................................1466 50 Disassembly and assembly.............................................................................................................................. 0 General information on disassembly and assembly......................................................................................................1469 How to read this manual..........................................................................................................................1470 Coating materials list...........................................................................................................................1472 Special tools list...............................................................................................................................1475 Sketches of special tools........................................................................................................................1479 Engine and cooling system............................................................................................................................1493 Removal and installation of engine assembly......................................................................................................1494 Removal and installation of hood.................................................................................................................1498 Removal and installation of radiator assembly....................................................................................................1501 Removal and installation of aftercooler assembly.................................................................................................1504 Removal and installation of oil cooler assembly..................................................................................................1506 Removal and installation of cooling fan and drive motor assembly.................................................................................1508 Removal and installation of fuel supply pump assembly............................................................................................1512 Removal and installation of fuel injector assembly...............................................................................................1518 Removal and installation of cylinder head assembly...............................................................................................1524 Removal and installation of engine front oil seal................................................................................................1532 Removal and Installation of engine rear oil seal.................................................................................................1535 Removal and installation of fuel tank assembly...................................................................................................1540 Power train, Part 1..................................................................................................................................1545 Removal and installation of torque converter and transmission assembly...........................................................................1546 Disassembly and assembly of torque converter assembly (Standard specification)...................................................................1552 Disassembly and assembly of torque converter assembly (Lockup specification).....................................................................1556 Disassembly and assembly of transmission assembly................................................................................................1563 Disassembly and assembly of transmission clutch pack assembly....................................................................................1577 Disassembly and assembly of parking brake assembly...............................................................................................1594 Power train, Part 2..................................................................................................................................1603 Removal and installation of front axle assembly..................................................................................................1604 Removal and installation of rear axle assembly...................................................................................................1606 Disassembly and assembly of axle housing assembly................................................................................................1612 Disassembly and assembly of differential assembly................................................................................................1621 Undercarriage and frame..............................................................................................................................1641 Removal and installation of center hinge pin.....................................................................................................1642 Removal and installation of counterweight........................................................................................................1650 Hydraulic system.....................................................................................................................................1653 Removal and installation of steering demand valve assembly.......................................................................................1654 Removal and installation of work equipment valve assembly........................................................................................1657 Removal and installation of brake charge valve assembly..........................................................................................1660 Removal and installation of hydraulic tank assembly..............................................................................................1661 Removal and installation of steering and power train pump assembly...............................................................................1663 Removal and installation of work equipment and cooling fan pump assembly.........................................................................1665 Work equipment.......................................................................................................................................1669 Removal and installation of work equipment assembly..............................................................................................1670 Cab and its attachments..............................................................................................................................1675 Removal and installation of operator's cab and floor frame assembly..............................................................................1676 Removal and installation of operator's cab glass (stuck glass)...................................................................................1680 Disassembly and assembly of operator's seat assembly (Standard specification)....................................................................1688 Disassembly and assembly of operator’s seat assembly (Manufactured by GRAMMER)...................................................................1697 Electrical system....................................................................................................................................1731 Removal and installation of air conditioner unit assembly........................................................................................1732 Removal and installation of engine controller assembly...........................................................................................1736 Removal and installation of transmission controller assembly.....................................................................................1737 Removal and installation of KOMTRAX controller assembly..........................................................................................1738 90 Diagrams and drawings.................................................................................................................................1741 Hydraulic diagrams and drawings......................................................................................................................1741 Hydraulic diagrams and drawings..................................................................................................................1742 Power train hydraulic circuit diagram........................................................................................................1742 Hydraulic circuit diagram....................................................................................................................1744 Electrical diagrams and drawings.....................................................................................................................1746 Electrical circuit diagram (1/14)................................................................................................................1748 Electrical circuit diagram (2/14)................................................................................................................1749 Electrical circuit diagram (3/14)................................................................................................................1750 Electrical circuit diagram (4/14)................................................................................................................1751 Electrical circuit diagram (5/14)................................................................................................................1752 Electrical circuit diagram (6/14)................................................................................................................1753 Electrical circuit diagram (7/14)................................................................................................................1754 Electrical circuit diagram (8/14)................................................................................................................1755 Electrical circuit diagram (9/14)................................................................................................................1756 Electrical circuit diagram (10/14)...............................................................................................................1757 Electrical circuit diagram (11/14)...............................................................................................................1758 Electrical circuit diagram (12/14)...............................................................................................................1759 Electrical circuit diagram (13/14)...............................................................................................................1760 Electrical circuit diagram (14/14)...............................................................................................................1761 Work equipment controller system electrical circuit diagram......................................................................................1762 Connector arrangement diagram....................................................................................................................1763
KOMATSU WA470-6, WA480-6 WHEEL LOADER SHOP MANUAL SEN00783-07 – PDF DOWNLOAD:
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