Shop Manual
WHEEL LOADER
SERIAL NUMBERS C50001 and up
WHEEL LOADER
SEN06413-06 00 Index and foreword
Composition of shop manual
The contents of this shop manual are shown together with Form No. in a list.
Note 1:Always keep the latest version of this manual in accordance with this list and utilize accordingly. The marks shown to the right of Form No. denote the following: Q: New issue (to be filed additionally) q: Revision (to be replaced for each Form No.)
Note 2:This shop manual can be supplied for each Form No.
Note 3:To file this shop manual in the special binder for management, handle it as follows:
•Place a divider on the top of each section in the file after matching the Tub No. with No. indicated next to each Section Name shown in the table below:
•File overview and other materials in sections in the order shown below and utilize them accordingly.
Section Title
Form Number
Shop Manual, contents binder, binder label and tabsSEN06411-06
00 Index and forewordSEN06412-06
Index SEN06413-06 q
Foreword and general informationSEN06414-00
01 Specification
SEN06415-00
Specification and technical dataSEN06416-00
10 Structure, function and maintenance standardSEN06417-02
Engine and cooling systemSEN06418-00
Power train SEN06419-00
Steering systemSEN06420-00
Brake system SEN06421-00
Undercarriage and frameSEN06422-00
Hydraulic system, Part 1SEN06423-00
Hydraulic system, Part 2SEN06424-00
Work equipmentSEN06425-00
Cab and its attachmentsSEN06426-00
Electrical system, Part 1SEN06427-01
Electrical system, Part 2SEN06428-01
Electrical system, Part 3SEN06429-01
20 Standard value tableSEN06430-00
Standard service value tableSEN06431-00
30 Testing and adjustingSEN06432-02
Testing and adjusting, Part 1SEN06433-02
Testing and adjusting, Part 2SEN06434-00
Testing and adjusting, Part 3SEN06435-00
40 TroubleshootingSEN06436-02
Failure code table and fuse locationsSEN06437-01
General information on troubleshootingSEN06438-00
Troubleshooting by failure code (Display of code), Part 1SEN06439-00
Troubleshooting by failure code (Display of code), Part 2SEN06440-01
Troubleshooting by failure code (Display of code), Part 3SEN06441-01
Troubleshooting by failure code (Display of code), Part 4
Troubleshooting by failure code (Display of code), Part 5
Troubleshooting by failure code (Display of code), Part 6
Troubleshooting by failure code (Display of code), Part 7
Troubleshooting by failure code (Display of code), Part 8
Troubleshooting by failure code (Display of code), Part 9
Troubleshooting by failure code (Display of code), Part 10
Troubleshooting of electrical system (E-mode)
Troubleshooting of hydraulic and mechanical system (H-mode)
SEN06442-01
SEN06443-01
SEN06444-00
SEN06445-00
SEN06446-01
SEN06447-00
SEN06448-00
SEN06449-00
SEN06450-00
Troubleshooting of engine (S-mode) SEN06451-00
50 Disassembly and assembly SEN06452-04
General information on disassembly and assembly SEN06453-02 q
Engine and cooling system SEN06454-00
Power train SEN06455-04 q
Steering system SEN06456-01
Brake system SEN06457-00
Undercarriage and frame SEN06458-00
Hydraulic system SEN06459-00
Work equipment SEN06460-00
Cab and its attachments SEN06461-00
Electrical system SEN06462-00
90 Diagrams and drawings
SEN06463-01
Hydraulic diagrams and drawings SEN06464-00
Electrical diagrams and drawings SEN06465-01
Failure code [15SAL1] (ECMV F clutch: When command current is OFF, fill signal is ON).....4
Failure code [15SALH] (ECMV F clutch: When command current is ON, fill signal is OFF)....6
Failure code [15SBL1] (ECMV R clutch: When command current is OFF, fill signal is ON).....8
Failure code [15SBLH] (ECMV R clutch: When command current is ON, fill signal is OFF)....10
Failure code [15SEL1] (ECMV 1st clutch: When command current is OFF, fill signal is ON)...12
Failure code [15SELH] (ECMV 1st clutch: When command current is ON, fill signal is OFF)..14
Failure code [15SFL1] (ECMV 2nd clutch: When command current is OFF, fill signal is ON)..16
Failure code [15SFLH] (ECMV 2nd clutch: When command current is ON, fill signal is OFF).18
Failure code [15SGL1] (ECMV 3rd clutch: When command current is OFF, fill signal is ON)..20
Failure code [15SGLH] (ECMV 3rd clutch: When command current is ON, fill signal is OFF).22
Failure code [15SHL1] (ECMV 4th clutch: When command current is OFF, fill signal is ON)..24
Failure code [15SHLH] (ECMV 4th clutch: When command current is ON, fill signal is OFF).26
Failure code [2F00MA] (Parking brake: Malfunction)................................................................28
Failure code [2G43ZG] (Accumulator: Low oil pressure)..........................................................31
Failure code [44K0L4] (Bucket positioner: ON/OFF signals disagree).....................................35
Troubleshooting by failure code (Display of code), Part 2
Failure code [AA1ANX] (Air cleaner: Clogging).......................................................................4
Failure code [AB00L6] (Alternator: Signal disagrees with operating state of engine)..............7
Failure code [AB00MA] (Alternator: Malfunction)....................................................................11
Failure code [B@BAZG] (Rotation derating by low engine oil pressure).................................15
Failure code [B@BAZK] (Engine oil: Low level)......................................................................16
Failure code [B@BCNS] (Coolant: Overheating).....................................................................17
Failure code [B@BCZK] (Coolant: Low level)..........................................................................19
Failure code [B@BEBF] (Water in fuel error)...
Failure code [b@CENS] (Torque converter oil: Overheating)..................................................24
Failure code [B@CENS] (Torque converter oil: Overheating).................................................27
Failure code [B@HANS] (Hydraulic oil: Overheating).............................................................30
Failure code [CA111] (Abnormality in engine controller)..........................................................32
Failure code [CA115] (Engine Ne or Bkup speed sensor error)..............................................33
Failure code [CA122] (Charge pressure sensor high
Failure code [CA123] (Charge pressure sensor low
Failure code [CA131] (Throttle sensor high error)...................................................................38
Failure code [CA132] (Throttle sensor low error).....................................................................40
Failure code [CA144] (Coolant sensor high
Failure code [CA145] (Coolant sensor low error)....................................................................44
Failure code [CA153] (Charge temperature sensor
[CA154] (Charge temperature sensor
Failure code [CA155] (Derating of speed by abnormally
Failure code [CA187] (Sensor power supply 2 low
Failure code [CA221] (Atmospheric pressure sensor
[CA222] (Atmospheric sensor
code [CA227] (Sensor power supply 2 high
code [CA234] (Engine overspeed)...............................................................................59
Failure code [CA238] (Ne speed sensor power supply
by failure code (Display of code), Part 3
Failure code [CA271] (IMV/PCV1 Short circuit).......................................................................3
Failure code [CA272] (IMV/PCV1 Disconnection) ...................................................................4
Failure code [CA322] (Injector #1 open/short error)................................................................6
Failure code [CA323] (Injector #5 open/short error)................................................................8
Failure code [CA324] (Injector #3 open/short error)................................................................10
Failure code [CA325] (Injector #6 open/short error)................................................................12
Failure code [CA331] (Injector #2 open/short error)................................................................14
Failure code [CA332] (Injector #4 open/short error)................................................................16
Failure code [CA342] (Calibration code inconsistency)...........................................................18
Failure code [CA351] (Injectors drive circuit error)..................................................................20
Failure code [CA352] (Sensor power supply 1 low error)........................................................23
Failure code [CA386] (Sensor power supply 1 high error).......................................................25
Failure code [CA428] (Abnormally high level in water sensor)................................................26
Failure code [CA429] (Abnormally low level in water sensor).................................................27
Failure code [CA431] (Idle
Failure
[CA452] (Common
[CA488] (Derating of
(Supply
Failure code [CA689] (Engine Ne speed sensor
Failure code [CA731] (Engine Bkup speed sensor phase
Failure code [CA757] (All continuous
Failure code [CA778] (Engine Bkup speed sensor error)........................................................58
Failure code [CA1633] (KOMNET datalink timeout error).......................................................61
Failure code [CA2185] (Throttle sensor power supply voltage high error)..............................67
Failure code [CA2186] (Throttle sensor power supply voltage low error)................................68
Troubleshooting by failure code (Display of code), Part 4SEN06442-01
Failure code [CA2249] (Supply pump pressure very low error 2)............................................3
Failure code [CA2311] (Abnormality in IMV solenoid).............................................................4
Failure code [CA2555] (Intake heater relay disconnection error)............................................6
Failure code [CA2556] (Intake heater relay short circuit error)................................................9
Failure code [D150KA] (Emergency steering relay: Disconnection)........................................12
Failure code [D150KB] (Emergency steering relay: Short circuit)...........................................15
Failure code [D150KY] (Emergency steering relay: Short circuit with power supply line).......18
Failure code [D160KA] (Backup lamp relay: Disconnection)...................................................21
Failure code [D160KB] (Backup lamp relay: Short circuit)......................................................24
Failure code [D191KA] (Joystick steering neutral safety relay: Disconnection)......................27
Failure code [D191KB] (Joystick steering neutral safety relay: Short circuit)..........................29
Failure code [D191KY] (Joystick steering neutral safety relay: Short circuit with power supply line).......................................................................................31
Failure code [D192KA] (ECSS solenoid: Disconnection)........................................................33
Failure code [D192KB] (ECSS solenoid: Short circuit)............................................................34
Failure code [D192KY] (ECSS solenoid: Short circuit with power supply line)........................35
Failure code [D193KA] (Joystick steering solenoid cut relay: Disconnection).........................36
Failure code [D193KB] (Joystick steering solenoid cut relay: Short circuit)............................38
Failure code [D193KY] (Joystick steering solenoid cut relay: Short circuit with power supply line).......................................................................................40
Failure code [D5ZHKA] (Terminal C signal: Disconnection)....................................................43
Failure code [D5ZHKB] (Terminal C signal: Short circuit)........................................................49
Failure code [D5ZHKZ] (Terminal C signal: Disconnection or short circuit).............................54
Failure code [D5ZHL6] (Terminal C signal: Signal does not match engine running or stopped state)................................................................................................61
Failure code [DA80L4] (Auto grease controller: ON/OFF signals disagree)............................66
Failure code [DAF3KK] (Machine monitor: Low source voltage (input)...................................68
Failure code [DAF5KP] (Machine monitor: Low output voltage)..............................................72
Failure code [DAFRKR] (CAN communication with machine monitor: Defective communication (Abnormality in target component system)..............................76
Troubleshooting by failure code (Display of code), Part 5SEN06443-01
Failure code [DAQ0KK] (Transmission controller: Low source voltage)..................................4
Failure code [DAQ0KT] (Transmission controller: Abnormality in controller)..........................8
Failure code [DAQ2KK] (Transmission controller load power supply line: Low source voltage (input).................................................................................9
Failure code [DAQ9KQ] (Transmission controller model selection: Disagreement of model selection signals).........................................................12
Failure code [DAQRKR] (CAN communication with transmission controller: Defective communication (Abnormality in target component system)...............13
Failure code [DAQRMA] (Transmission controller option setting: Malfunction).......................19
Failure code [DB2RKR] (CAN communication with engine controller: Defective communication (Abnormality in target component system)...............................20
Failure code [DB90KK] Work equipment controller: Low source voltage (input).....................24
Failure code [DB90KT] Work equipment controller: Abnormality in controller.........................26
Failure code [DB92KK] Work equipment controller load power supply line: Low source voltage (input).................................................................................27
Failure code [DB95KX] Work equipment controller power supply output: Out of input signal range....................................................................................29
Failure code [DB99KQ] (Work equipment controller model selection: Disagreement in model selection signals).........................................................32
Failure code [DB9RKR] CAN communication with work equipment controller: Defective communication (Abnormality in target component system)...............................33
Failure code [DB9RMA] (Work equipment controller option setting: Malfunction)...................35
Failure code [DB9RMC] (CAN communication with transmission controller, engine controller and machine monitor: Defective operation)............................36
Failure code [DD15LD] t switch (Panel switch 1): Switch is kept pressed for long time........40
Failure code [DD16LD] U switch (Panel switch 2): Switch is kept pressed for long time.......43
Failure code [DD17LD] < switch (Panel switch 3): Switch is kept pressed for long time.........46
Failure code [DD18LD] > switch (Panel switch 4): Switch is kept pressed for long time.........49
Failure code [DD1ALD] Remote positioner raise/lower set switch (raise):
Switch is kept pressed for long time...................................................................52
Failure code [DD1BLD] Remote positioner raise/lower set switch (lower):
Switch is kept pressed for long time...................................................................54
Failure code [DD1CLD] Load meter subtotal switch: Switch is kept pressed for long time.....56
Failure code [DD1FLD] Load meter mode selector switch (A/B):
Switch is kept pressed for long time...................................................................58
Failure code [DD1GLD] Load meter mode selector switch (+/–):
Switch is kept pressed for long time...................................................................60
Failure code [DD1HLD] (Load meter display selector switch: Switch is kept pressed for long time).................................................................62
Failure code [DD1NLD] (Fan reverse switch: Switch is kept pressed for long time)...............64
Failure code [DD1NL4] (Fan automatic reverse switch: Switch is kept pressed for long time)66
Failure code [DDB6L4] (Parking brake switch (Neutralizer): ON/OFF signals disagree)........68
Troubleshooting by failure code (Display of code), Part 6
SEN06444-00
Failure code [DDE5MA] (Emergency steering drive switch: Malfunction)................................4
Failure code [DDK3KA] (Right FNR switch: Disconnection)....................................................7
Failure code [DDK4KA] (Joystick steering FNR switch: Disconnection)..................................10
Failure code [DDK5L4] (Joystick steering shift-up/down switch: ON/OFF signals disagree)...13
Failure code [DDK6KA] (FNR lever switch: Disconnection).....................................................15
Failure code [DDK6KB] (FNR lever switch: Short circuit)........................................................22
Failure code [DDS5KA] (Steering pressure switch: Disconnected)..........................................26
Failure code [DDS5KB] (Steering pressure switch: Grounded)...............................................28
Failure code [DDT0L4] (Shift mode selector switch: ON/OFF signals disagree).....................30
Failure code [DDT4LD] (Transmission cut-off set switch: Switch is kept pressed for long time)33
Failure code [DDW9LD] (Kick-down switch: Switch is kept pressed for long time)..................36
Failure code [DDWLLD] (Hold switch: Switch is kept pressed for long time)...........................39
Failure code [DDY0LD] (Load meter cancel switch: Switch is kept pressed for long time).....42
Failure code [DF10KA] (Transmission shift lever switch: Disconnected).................................44
Failure code [DF10KB] (Transmission shift lever switch: Short circuit)....................................48
Failure code [DGF1KA] (Transmission oil temperature sensor: Disconnected).......................51
Failure code [DGF1KB] (Transmission oil temperature sensor: Short circuit).........................54
Failure code [DGH2KX] (Hydraulic oil temperature sensor: Out of input signal range)...........57
Failure code [DGR2KA] (Rear brake oil temperature sensor: Disconnected)..........................59
Failure code [DGR2KX] (Rear brake oil temperature sensor: Out of input signal range)........61
Failure code [DGT1KX] (Torque converter oil temperature sensor: Out of input signal range)63
Failure code [DH21KA] (Loader pump pressure sensor: Disconnection)................................66
Failure code [DH21KB] (Loader pump pressure sensor: Power supply line short)..................68
Troubleshooting by failure code (Display of code), Part 7 SEN06445-00
Failure code [DHPCKX] (Lift arm cylinder bottom pressure sensor: Out of input signal range)4
Failure code [DHPDKX] (Lift arm cylinder head pressure sensor: Out of input signal range).6
Failure code [DHT1KX] (Transmission cut-off pressure sensor: Out of input signal range)....8
Failure code [DHT8KA] (Steering pump pressure sensor: Disconnection)..............................12
Failure code [DHT8KB] (Steering pump pressure sensor: Short circuit).................................14
Failure code [DK59KA] (Lift arm EPC lever potentiometer (Main): Disconnection).................16
Failure code [DK59KY] (Lift arm EPC lever potentiometer (Main): Short circuit with power supply line)...................................................................19
Failure code [DK59L8] (Lift arm EPC lever potentiometer (Main): Analog signals disagree)..22
Failure code [DK5AKA] (Lift arm EPC lever potentiometer (Sub): Disconnection)..................25
Failure code [DK59KY] (Lift arm EPC lever potentiometer (Main): Short circuit with power supply line)...................................................................28
Failure code [DK5BKA] (Bucket EPC lever potentiometer (Main): Disconnection).................31
Failure code [DK5BKY] (Bucket EPC lever potentiometer (Main):
Short circuit with power supply line)...................................................................34
Failure code [DK5BL8] (Bucket EPC lever potentiometer (Main): Analog signals disagree)..37
Failure code [DK5CKA] (Bucket EPC lever potentiometer (Sub): Disconnection)..................40
Failure code [DK5CKY] (Bucket EPC lever potentiometer (Sub): Short circuit with power supply line)...................................................................43
Troubleshooting by failure code (Display of code), Part 8SEN06446-01
Failure code [DK5FKA] (Joystick steering EPC lever potentiometer (Main): Disconnection)..3
Failure code [DK5FKY] (Joystick steering EPC lever potentiometer (Main): Short circuit with power supply line)...................................................................6
Failure code [DK5GKA] (Joystick steering EPC lever potentiometer (Sub): Disconnection)...8
Failure code [DK5GKY] (Joystick steering EPC lever potentiometer (Sub):
Short circuit with power supply line)...................................................................12
Failure code [DK5FL8] (Joystick steering EPC lever potentiometer (Main): Analog signals disagree)....................................................................................14
Failure code [DKA0KA] (Lift arm angle sensor: Disconnection)..............................................18
Failure code [DKA0KX] (Lift arm angle sensor: Out of input signal range).............................20
Failure code [DKA0KY] (Lift arm angle sensor: Short circuit with power supply line)..............22
Failure code [DKA0L0] (Lift arm angle sensor: Dislocation of sensor)....................................24
Failure code [DLT3KA] (Transmission output shaft speed sensor: Disconnection).................26
Failure code [DLT3LC] (Transmission output shaft speed sensor: Out of input signal range).28
Failure code [DT20KB] (Transmission cut-off indicator lamp: Short circuit)............................30
Failure code [DUM1KB] (Remote positioner raise set indicator lamp: Short circuit)...............34
Failure code [DUM2KB] (Remote positioner lower set indicator lamp: Short circuit)..............36
Failure code [DV00KB] (Alarm buzzer: Short circuit)..............................................................38
Failure code [DW4PKA] (Lift arm raise EPC solenoid: Disconnection)...................................40
Failure code [DW4PKB] (Lift arm raise EPC solenoid: Short circuit)......... .................42
Failure code [DW4PKY] (Lift arm raise EPC solenoid: Short circuit with power supply line)...44
Failure code [DW4QKA] (Lift arm lower EPC solenoid: Disconnection)..................................46
Failure code [DW4QKB] (Lift arm lower EPC solenoid: Short circuit)......................................47
Failure code [DW4QKY] (Lift arm lower EPC solenoid: Short circuit with power supply line).48
Failure code [DW4RKA] (Bucket tilt EPC solenoid: Disconnection)........................................50
Failure code [DW4RKB] (Bucket tilt EPC solenoid: Short circuit)............................................51
Failure code [DW4RKY] (Bucket tilt EPC solenoid: Short circuit with power supply line).......52
Troubleshooting by failure code (Display of code), Part 9 SEN06447-00
Failure code [DW4SKA] (Bucket dump EPC solenoid: Disconnection)..... ..............3
Failure code [DW4SKB] (Bucket dump EPC solenoid: Short circuit)......................................4
Failure code [DW4SKY] (Bucket dump EPC solenoid: Short circuit with power supply line)..6
Failure code [DW7BKA] (Fan reverse solenoid: Disconnection). ..............8
Failure code [DW7BKB] (Fan reverse solenoid: Short circuit)...... ...........10
Failure code [DW7BKY] (Fan reverse solenoid: Short circuit with power supply line)............12
Failure code [DWM1KA] (Work equipment neutral lock solenoid: Disconnection)..................14
Failure code [DWM1KB] (Work equipment neutral lock solenoid: Short circuit)......................16
Failure code [DWM1KY] (Work equipment neutral lock solenoid: Short circuit with power supply line)...................................................................18
Failure code [DWN6KA] (Lift arm raise magnet detent solenoid: Disconnection)...................20
Failure code [DWN6KB] (Lift arm raise magnet detent solenoid: Short circuit).......................22
Failure code [DWN6KY] (Lift arm raise magnet detent solenoid: Short circuit with power supply line)...................................................................24
Failure code [DWN7KA] (Lift arm float magnet detent solenoid: Disconnection)....................26
Failure code [DWN7KB] (Lift arm float magnet detent solenoid: Short circuit)........................28
Failure code [DWN7KY] (Lift arm float magnet detent solenoid: Short circuit with power supply line)...................................................................30
Failure code [DWN8KA] (Bucket tilt magnet detent solenoid: Disconnection)........................32
Failure code [DWN8KB] (Bucket tilt magnet detent solenoid: Short circuit)............................34
Failure code [DWN8KY] (Bucket tilt magnet detent solenoid: Shorted with the power source)36
Failure code [DX16KA] (Fan pump EPC solenoid: Disconnection).........................................38
Failure code [DX16KA] (Fan motor EPC solenoid: Disconnection).........................................39
Failure code [DX16KB] (Fan pump EPC solenoid: Short circuit).............................................40
Failure code [DX16KB] (Fan motor EPC solenoid: Short circuit).............................................41
Failure code [DX16KY] (Fan pump EPC solenoid: Short circuit with power supply line).........42
Failure code [DX16KY] (Fan motor EPC solenoid: Short circuit with power supply line)........43
Failure code [DXA1KA] (Loader pump EPC solenoid: Disconnection)....................................44
Failure code [DXA1KB] (Loader pump EPC solenoid: Short circuit).......................................46
Failure code [DXH1KA] (Lockup ECMV solenoid: Disconnection)..........................................48
Failure code [DXH1KB] (Lockup ECMV solenoid: Short circuit)..............................................50
Failure code [DXH1KY] (Lockup ECMV solenoid: Short circuit with power supply line)..........52
Failure code [DXH4KA] (1st clutch ECMV solenoid: Disconnection).......................................54
Failure code [DXH4KB] (1st clutch ECMV solenoid: Short circuit)..........................................56
Failure code [DXH4KY] (1st clutch ECMV solenoid: Short circuit with power supply line)......58
Troubleshooting by failure code (Display of code), Part 10SEN06448-00
Failure code [DXH5KA] (2nd clutch ECMV solenoid: Disconnection).....................................4
Failure code [DXH5KB] (2nd clutch ECMV solenoid: Short circuit).........................................6
Failure code [DXH5KY] (2nd clutch ECMV solenoid: Short circuit with power supply line).....8
Failure code [DXH6KA] (3rd clutch ECMV solenoid: Disconnection)......................................10
Failure code [DXH6KB] (3rd clutch ECMV solenoid: Short circuit)..........................................12
Failure code [DXH6KY] (3rd clutch ECMV solenoid: Short circuit with power supply line)......14
Failure code [DXH7KA] (R clutch ECMV solenoid: Disconnection).........................................16
Failure code [DXH7KB] (R clutch ECMV solenoid: Short circuit)............................................18
Failure code [DXH7KY] (R clutch ECMV solenoid: Short circuit with power supply line)........20
Failure code [DXH8KA] (F clutch ECMV solenoid: Disconnection).........................................22
Failure code [DXH8KB] (F clutch ECMV solenoid: Short circuit).............................................24
Failure code [DXH8KY] (F clutch ECMV solenoid: Short circuit with power supply line).........26
Failure code [DXHHKA] (4th clutch ECMV solenoid: Disconnection)......................................28
Failure code [DXHHKB] (4th clutch ECMV solenoid: Short circuit).........................................30
Failure code [DXHHKY] (4th clutch ECMV solenoid: Short circuit with power supply line).....32
Failure code [DXHLKA] (Joystick steering right EPC solenoid: Disconnection)......................34
Failure code [DXHLKB] (Joystick steering right EPC solenoid: Short circuit)..........................36
Failure code [DXHLKY] (Joystick steering right EPC solenoid: Short circuit with power supply line)...................................................................38
Failure code [DXHMKA] (Joystick steering left EPC solenoid: Disconnection).......................40
Failure code [DXHMKB] (Joystick steering left EPC solenoid: Short circuit)...........................42
Failure code [DXHMKY] (Joystick steering left EPC solenoid: Short
Failure code [DY30MA] Motor-driven emergency steering pump failure (During operation of machine)............................................................................46 Failure code [DY30MC] Motor-driven emergency steering pump failure (Malfunction in manual mode)............................................................................51 Troubleshooting of
E-6
E-7
E-8
E-9
E-10
E-11
E-12
E-13
E-14
E-15
E-16 Transmission is kept in neutral, or brake drags whendirectional lever is operated while parking brake is applied.....................99
E-17 Transmission cut-off mode cannot be set or reset..........................................................102
E-18 Transmission cut-off set cannot be reset ........................................................................105
E-19 FNR switch mode cannot be set or reset ........................................................................108
E-20 Fan reverse function cannot be used or reset................................................................110
E-21 Discharge from loader pump does not rise from minimum level.....................................112
E-22 ECSS function cannot be used or reset..........................................................................114
E-23 When parking brake is turned ON, parking brake indicator lamp does not light up........116
E-24 When emergency brake operates, brake oil pressure caution lamp does not operate...120
E-25 Air cleaner clogging indicator lamp does not light up......................................................124
E-26 Radiator coolant level caution lamp does not light up.....................................................127
E-27 Hydraulic oil temperature gauge does not rise and hydraulic oil temperature caution lamp does not light up...................................129
E-28 Torque converter oil temperature gauge does not rise and torque converter oil temperature caution lamp does not light up.......................131
E-29 Steering oil pressure caution lamp does not light up......................................................133
E-30 Abnormality in t switch (panel switch 1) input...............................................................136
E-31 Abnormality in U switch (panel switch 2) input..............................................................139
E-32 Abnormality in < switch (panel switch 3) input................................................................142
E-33 Abnormality in > switch (panel switch 4) input................................................................145
Troubleshooting of hydraulic and mechanical system (H-mode) SEN06450-00
Method of using troubleshooting chart....................................................................................3 Table of failure modes and causes..........................................................................................6
H-1 The machine does not start..............................................................................................14
H-2 Torque converter lockup is not switched off (engine stalls) [Machine with lockup clutch].............................................................................................16
H-3 Torque converter lockup is not switched on [Machine with lockup clutch]........................17
H-4 The travel speed is slow, the thrusting force is weak, the uphill traveling power is weak, and the gear is not shifted...........................18
H-5 Shocks are large at the times of starting and shifting gear...............................................20
H-6 Time lag is large at the times of starting and shifting gear................................................22
H-7 The torque converter oil temperature is high....................................................................24
H-8 Steering does not turn.......................................................................................................25
H-9 Steering does not turn [Machine with joystick steering]....................................................26
H-10 Steering response is low.................................................................................................27
H-11 Turning, response of steering is poor [machine with joystick steering]...........................28
H-12 Steering is heavy............................................................................................................29
H-13 When machine turns, it shakes or makes large shocks..................................................30
H-14 When machine turns, it shakes or makes large shocks [machine with joystick steering]........................................................................................31
H-15 The wheel brake does not work or does not
H-16 The wheel brake is not released or it drags....................................................................33
H-17
H-18 The parking brake is not released or it drags (including emergency release system)....35
H-19 Lift arm does not rise......................................................................................................36
H-20 Lift arm speed is low or rising force of lift arm is insufficient...........................................37
H-21 When rising, the lift arm comes to move slowly at specific height..................................38
H-22
H-27 The bucket comes to operate slowly in the midst of tilting-back.....................................41
H-29 Hydraulic drifts of the bucket is large..............................................................................41
H-30 The bucket wobbles during travel with cargo (The work equipment valve is set to "HOLD")..................................................................41
H-31
H-32
H-33
H-34
H-35 ECSS does not operate, and pitching, bouncing occur..................................................44
H-36 Fan revolution is abnormal (Fan sound/ vibration is abnormally large or engine overheats).........................................................................................................................45
S-1
S-2
S-3
S-4
S-5
S-6
S-7
S-8
S-11