Komatsu GD535-5 1001 & Up SEN06650-02 (Preview)
Cover
Notice of revision
00 Index and foreword
Table of contents
Acronyms
Foreword and general information
Safety notice
How to read the shop manual
Explanation of terms for maintenance standard
Handling of electric equipment and hydraulic components
Handling of connectors newly used for engines
How to read electric wire code
Precautions when carrying out work
Method of disassembling and connecting push-pull type coupler
Standard tightening torque table
Conversion table
01 Specification
Contents
Acronyms
Specifications
Specification drawing
Specifications
Weight table
Table of fuel, coolant, and lubricants
10 Structure and function
Contents
Acronyms
Engine and cooling system
Cooling system
Cooling fan motor
Power train system
Power train system drawing
Power train piping drawing
Transmission control
Torque converter
Transmission
Transmission control valve
ECMV
Main relief valve and torque converter relief valve
Front axle
Rear axle
Differential (Non-differential specification)
Differential (Differential lock specification)
Differential lock solenoid valve
Final drive
Tandem drive
Steering system
Steering piping drawing
Priority valve
Steering valve
Brake system
Hydraulic piping drawing of brake system
Brake valve
Brake circuit accumulator
Brake circuit accumulator charge valve
Wheel brake
Parking brake solenoid valve and lifter lock pin solenoid valve
Parking brake
Undercarriage and frame
Frame
Tire
Hydraulic system
Hydraulic system
Hydraulic piping drawing of work equipment
Work equipment control
Hydraulic tank
Work equipment pump and steering pump
Power train pump
Power train pump and differential lock pump
Brake and cooling fan pump
Control valve
Functions and valve operations
Hydraulic cylinder
Swivel joint
Pilot check valve
Work equipment system
Circle and drawbar
Blade
Lifter
Circle rotation motor
Circle rotation gear
Ripper
Cab and its attachments
ROPS cab
Electrical system
Layout drawing of electrical system
System operating lamp system
Battery disconnect switch
Machine monitor
Automatic gear shift control system
Transmission controller
Engine controller
KOMTRAX system
KOMTRAX terminal
Rearview monitor system
Rearview monitor
Rearview camera
Engine starting circuit
Engine stop circuit
Preheating circuit
Sensors
Engine power mode selector circuit
Cooling fan control system
20 Standard value table
Contents
Acronyms
Standard value table
Standard value table for engine
Standard value table for machine
30 Testing and adjusting
Contents
Acronyms
Tools for testing, adjusting, and troubleshooting
Tools for testing, adjusting, and troubleshooting
Engine and cooling system
Testing engine speed
Testing boost pressure
Testing exhaust gas temperature
Testing exhaust gas color
Adjusting valve clearance
Testing compression pressure
Testing blowby pressure
Testing engine oil pressure
Handling fuel system devices
Releasing remaining pressure from fuel system
Testing fuel pressure
Bleeding air from fuel circuit
Testing fuel circuit for leakage
Handling cylinder cutout mode operation
Handling no-injection cranking operation
Handling voltage circuit of engine controller
Testing muffler (main body) and stacked muffler for looseness and damage
Testing muffler function
Testing installed condition of cylinder heads and manifolds
Testing of engine piping for damage and looseness
Testing fuel discharge, return rate, and leakage
Testing and adjusting air conditioner compressor belt tension
Checking and replacing alternator belt
Checking and replacing auto-tensioner
Power train
Testing power train oil pressure
Adjusting transmission speed sensor
Retrieval of disabled machine due to transmission valve failure
Flushing procedure for torque converter and transmission circuits
Testing and adjusting toe-in
Testing and adjusting differential lock oil pressure (differential lock specification)
Steering system
Testing and adjusting steering oil pressure
Testing oil leakage of steering cylinder
Bleeding air from steering circuit
Brake system
Releasing remaining pressure from brake circuit
Testing and adjusting brake oil pressure
Bleeding air from brake circuit
Testing wear of wheel brake disc
Testing and adjusting parking brake pad
Releasing parking brake manually
Charging brake accumulator with gas
Hydraulic system
Testing work equipment oil pressure
Testing lifter lock pin circuit pressure
Testing cooling fan speed
Testing cooling fan circuit oil pressure
Testing oil leakage of work equipment cylinder
Bleeding air from work equipment circuit
Work equipment
Adjusting drawbar ball joint clearance
Testing and adjusting circle guide clearance
Testing and adjusting slip clutch type circle drive
Electrical system
Procedure for testing diodes
Special functions of machine monitor
Handling high-voltage circuit of engine controller
KOMTRAX terminal start-up procedure
Adjusting rearview camera angle
Handle battery disconnect switch
Preparatory work for troubleshooting of electrical system failure
Pm Clinic
Pm Clinic
40 Troubleshooting
Contents
Acronyms
Information related to troubleshooting
Points to remember when troubleshooting
How to proceed in troubleshooting
Checks before troubleshooting
Inspection procedure before troubleshooting
Troubleshooting procedure
Failure code list
Symptoms and troubleshooting numbers
Information described in troubleshooting table
Diagnosis of open harness in pressure sensor system
Connector list and layout
Connector pin layout
T-box and T-adapter list
Locations of fuses
Troubleshooting by failure code (display of code)
Failure code [1500L0] Double Engagement of T/M Clutches
Failure code [15G0MW] Failure of R-Clutch System
Failure code [15H0MW] Failure of Clutch System (FH)
Failure code [15J0MW] Failure of Clutch System (FL)
Failure code [15K0MW] Failure of Clutch System (1st)
Failure code [15L0MW] Failure of Clutch System (2nd)
Failure code [15M0MW] Failure of Clutch System (3rd)
Failure code [15N0MW] Failure of Clutch System (4th)
Failure code [15SBL1] Release Trouble of ECMV (R)
Failure code [15SBMA] Malfunction of ECMV (R)
Failure code [15SCL1] Release Trouble of ECMV (FH)
Failure code [15SCMA] Malfunction of ECMV (FH)
Failure code [15SDL1] Release Trouble of ECMV (FL)
Failure code [15SDMA] Malfunction of ECMV (FL)
Failure code [15SEL1] Release Trouble of ECMV (1st)
Failure code [15SEMA] Malfunction of ECMV (1st)
Failure code [15SFL1] Release Trouble of ECMV (2nd)
Failure code [15SFMA] Malfunction of ECMV (2nd)
Failure code [15SGL1] Release Trouble of ECMV (3rd)
Failure code [15SGMA] Malfunction of ECMV (3rd)
Failure code [15SHL1] Release Trouble of ECMV (4th)
Failure code [15SHMA] Malfunction of ECMV (4th)
Failure code [15SJMA] Malfunction of ECMV (L/U)
Failure code [15U0NT] Overload of Inching Clutch
Failure code [2G42ZG] Accumulator Oil Pressure Low (Front)
Failure code [2G43ZG] Accumulator Oil Pressure Low (Rear)
Failure code [989L00] Engine Controller Lock Caution 1
Failure code [989M00] Engine Controller Lock Caution 2
Failure code [989N00] Engine Controller Lock Caution 3
Failure code [AB00KE] Charge Voltage Low
Failure code [AB00KY] Hot Short of Alternator R Terminal
Failure code [B@BAZG] Derating in speed due to engine oil pressure drop
Failure code [B@BCNS] Engine Overheat
Failure code [B@CENS] T/C Oil Temp. Overheat
Failure code [B@CKNS] DIFF Oil Temp. Overheat
Failure code [B@HANS] HYD Oil Temp. Overheat
Failure code [CA111] Engine NE, controller internal error
Failure code [CA115] Engine NE, Bkup speed sensor error
Failure code [CA122] Charge pressure sensor high error
Failure code [CA123] Charge pressure sensor low error
Failure code [CA131] Throttle sensor high error
Failure code [CA132] Throttle sensor low error
Failure code [CA144] Coolant sensor high error
Failure code [CA145] Coolant sensor low error
Failure code [CA153] Charge temperature sensor high error
Failure code [CA154] Charge temperature sensor low error
Failure code [CA155] Speed derating error by high charge temperature
Failure code [CA187] Sensor power supply 2 low error
Failure code [CA221] Atmospheric pressure sensor high error
Failure code [CA222] Atmospheric pressure sensor low error
Failure code [CA227] Sensor power supply 2 high error
Failure code [CA234] Engine overspeed
Failure code [CA238] Ne speed sensor power supply error
Failure code [CA271] IMV short-circuit error
Failure code [CA272] IMV open circuit
Failure code [CA322] Injector #1 (L/B #1) open/short
Failure code [CA323] Injector #5 (L/B #5) open/short
Failure code [CA324] Injector #3 (L/B #3) open/short
Failure code [CA325] Injector #6 (L/B #6) open/short
Failure code [CA331] Injector #2 (L/B #2) open/short
Failure code [CA332] Injector #4 (L/B #4) open/short
Failure code [CA342] Data compatibility error in engine controller
Failure code [CA351] Injector drive circuit error
Failure code [CA352] Sensor power supply 1 low error
Failure code [CA386] Sensor power supply 1 high error
Failure code [CA428] Water-in-fuel sensor high error
Failure code [CA429] Water-in-fuel sensor low error
Failure code [CA431] Idle validation switch error
Failure code [CA432] Idle validation action error
Failure code [CA435] Engine oil pressure switch error
Failure code [CA441] Power supply voltage low error
Failure code [CA442] Power supply voltage high error
Failure code [CA449] Common rail pressure high error 2
Failure code [CA451] Common rail pressure sensor high error
Failure code [CA452] Common rail pressure sensor low error
Failure code [CA488] Torque derating error by high charge temperature
Failure code [CA553] Common rail pressure high error 1
Failure code [CA559] Supply pump pressure low error 1
Failure code [CA689] Engine Ne speed sensor error
Failure code [CA731] Engine Bkup speed sensor phase error
Failure code [CA757] All continuous data lost error
Failure code [CA778] Engine Bkup speed sensor error
Failure code [CA1633] KOMNET (CAN communication) error
Failure code [CA2185] Throttle sensor power supply high error
Failure code [CA2186] Throttle sensor power supply low error
Failure code [CA2249] Supply pump pressure low error 2
Failure code [CA2311] Abnormality in IMV (IMA) solenoid
Failure code [CA2555] Intake heater relay open circuit
Failure code [CA2556] Intake heater relay short circuit
Failure code [D160KA] Disconnection of Backup Light Relay
Failure code [D160KB] Ground Fault of Backup Light Relay
Failure code [D160KY] Hot Short of Back Lamp Relay Output
Failure code [D19JKZ] Personal Code Relay Abnormality
Failure code [D19KKZ] Failure of Diff Control Relay
Failure code [D1EHKA] Disconnection of Engine Start Relay
Failure code [D1EHKB] Ground Fault of Engine Start Relay
Failure code [D1EHKY] Hot Short of Engine Start Relay
Failure code [D1FBKB] Ground Fault of Sol. Self-Holding Relay
Failure code [D8AQK4] CAN2 Discon (KOMTRAX) 2
Failure code [D8AQKR] CAN2 Discon (KOMTRAX)
Failure code [DAF0KT] Abnormality of Non-volatile Memory (MON)
Failure code [DAF0MB] Monitor ROM Abnormality
Failure code [DAF0MC] Monitor Error
Failure code [DAF3KK] Controller Power Source Low (MON)
Failure code [DAFLKA] Op Lamp Open Cir (Mon)
Failure code [DAFLKB] Op Lamp Shrt Cir (Mon)
Failure code [DAQ0KK] Controller Power Source Low (T/M)
Failure code [DAQ0KT] Abnormality of Non-volatile Memory (T/M)
Failure code [DAQ0MC] T/M Con Error
Failure code [DAQ1KA] Disconnection of Key SW ACC
Failure code [DAQ2KK] Solenoid Power Source Low (T/M)
Failure code [DAQ9KQ] Inconsistency of Model Selection (T/M)
Failure code [DAQLKA] Op Lamp Open Cir (T/M Cont)
Failure code [DAQLKB] Op Lamp Shrt Cir (T/M Cont)
Failure code [DAQQKR] CAN2 Discon (Transmission Con)
Failure code [DAQRMA] Inconsistency of Option Selection (T/M)
Failure code [DB2QKR] CAN2 Discon (Engine Con)
Failure code [DD1PKB] Abnormality of RPM Switch
Failure code [DD1QKB] Abnormality of RPM Set Mode Switch
Failure code [DDB6L4] Parking brake signal error
Failure code [DDTHKA] Disconnection of Fill Switch (FH)
Failure code [DDTJKA] Disconnection of Fill Switch (FL)
Failure code [DDTKKA] Disconnection of Fill Switch (1st)
Failure code [DDTLKA] Disconnection of Fill Switch (2nd)
Failure code [DDTMKA] Disconnection of Fill Switch (3rd)
Failure code [DDTNKA] Disconnection of Fill Switch (R)
Failure code [DDTPKA] Disconnection of Fill Switch (4th)
Failure code [DF10KA] Disconnection of Shift Lever Input
Failure code [DF10L4] Gear Speed/Travel Direction Signal Error
Failure code [DGF1KX] Out of Range of T/M Oil Temp. Sensor
Failure code [DGH2KB] Ground Fault of Hydraulic Oil Temp. S
Failure code [DGT1KX] Out of Range of T/C Oil Temp. Sensor
Failure code [DGT7KB] Ground Fault of Diff Oil Temp. S.(C)
Failure code [DHT5KX] Out of Range of T/C Input Pressure Sensor
Failure code [DHT5L6] Failure of T/C Oil Press Sensor
Failure code [DJF1KA] Disconnection of Fuel Level Sensor
Failure code [DK70KX] Out of Range of Inching Potentio.
Failure code [DKD0KX] Out of Range of Articulated Angle Sensor
Failure code [DLF1KA] Disconnection of T/M Input Speed Sensor
Failure code [DLF1LC] Failure of T/M Input Speed Sensor
Failure code [DLF2KA] Disconnection of T/M Inter. Speed Sensor
Failure code [DLF2LC] Failure of T/M Intermediate Speed Sensor
Failure code [DLM3KA] Rad Fan Spd Sen Opn/Shrt Cir
Failure code [DLM3LC] Rad Fan Spd Sen Sig Error
Failure code [DLM3MB] Rad Fan Spd Sen Error
Failure code [DLT3KA] Disconnection of T/M output Speed Sensor
Failure code [DW4BKA] Disconnection of Parking Brake Valve
Failure code [DW4BKB] Ground Fault of Parking Brake Valve
Failure code [DW4BKY] Hot Short of Parking Brake Solenoid
Failure code [DW7BKA] Rad Fan R Sol Opn Cir
Failure code [DW7BKB] Rad Fan R Sol Gnd Flt
Failure code [DW7BKY] Rad Fan R Sol Shrt Cir
Failure code [DX16KA] Rad Fan Pump EPC Sol Opn Cir
Failure code [DX16KB] Rad Fan Pump EPC Sol Gnd Flt
Failure code [DX16KY] Rad Fan Pmp EPC Sol Shrt Cir
Failure code [DXH1KA] Disconnection of ECMV Solenoid (Lockup)
Failure code [DXH1KB] Ground Fault of ECMV Solenoid (Lockup)
Failure code [DXH1KY] Hot Short of ECMV Solenoid (Lockup)
Failure code [DXH2KA] Disconnection of ECMV Solenoid (High)
Failure code [DXH2KB] Ground Fault of ECMV Solenoid (High)
Failure code [DXH2KY] Hot Short of ECMV Solenoid (High)
Failure code [DXH3KA] Disconnection of ECMV Solenoid (Low)
Failure code [DXH3KB] Ground Fault of ECMV Solenoid (Low)
Failure code [DXH3KY] Hot Short of ECMV Solenoid (Low)
Failure code [DXH4KA] Disconnection of ECMV Solenoid (1st)
Failure code [DXH4KB] Ground Fault of ECMV Solenoid (1st)
Failure code [DXH4KY] Hot Short of ECMV Solenoid (1st)
Failure code [DXH5KA] Disconnection of ECMV Solenoid (2nd)
Failure code [DXH5KB] Ground Fault of ECMV Solenoid (2nd)
Failure code [DXH5KY] Hot Short of ECMV Solenoid (2nd)
Failure code [DXH6KA] Disconnection of ECMV Solenoid (3rd)
Failure code [DXH6KB] Ground Fault of ECMV Solenoid (3rd)
Failure code [DXH6KY] Hot Short of ECMV Solenoid (3rd)
Failure code [DXH7KA] Disconnection of ECMV Solenoid (Reverse)
Failure code [DXH7KB] Ground Fault of ECMV Solenoid (Reverse)
Failure code [DXH7KY] Hot Short of ECMV Solenoid (Reverse)
Failure code [DXHHKA] Disconnection of ECMV Solenoid (4th)
Failure code [DXHHKB] Ground Fault of ECMV Solenoid (4th)
Failure code [DXHHKY] Hot Short of ECMV Solenoid (4th)
Troubleshooting of electrical system (E-mode)
E-1 Engine does not start (Starting motor does not rotate).
E-2 Manual preheating system does not work
E-3 When starting switch is turned ON, machine monitor displays nothing.
E-4 LCD panel backlight of machine monitor fails (goes out or flickers).
E-5 LCD display failure of machine monitor
E-6 The switch of machine monitor switch panel does not work.
E-7 Two-switch operation of switch panel on machine monitor does not function.
E-8 Machine monitor buzzer does not sound.
E-9 Some gauges or caution lamps of machine monitor do not work normally.
E-10 Rearview monitor does not light up or backlight flickers.
E-11 Rearview monitor images are not displayed clearly
E-12 Rearview monitor brightness cannot be adjusted
E-13 Night lighting lamp of rearview monitor is abnormal
E-14 Speedometer or engine speed display is abnormal.
E-15 Engine coolant temperature is displayed abnormally.
E-16 Articulated meter display is abnormal.
E-17 Torque converter oil temperature is displayed abnormally.
E-18 Fuel gauge is displayed abnormally.
E-19 Centralized warning lamps do not light or do not go out.
E-20 Alarm buzzer does not sound or does not stop sounding.
E-21 Transmission mode cannot be switched.
E-22 Engine mode cannot be switched.
E-23 Differential gear lock function does not operate or is not canceled (for differential gear lock model).
E-24 Cannot be locked or canceled by the lifter lock pin.
E-25 Horn does not sound or does not stop sounding.
E-26 Backup alarm does not sound or does not stop sounding.
E-27 Headlamps, clearance lamps, and tail lamps do not light up or go out.
E-28 Working lamps do not light up or go out.
E-29 Turn indicator light or emergency flashing light does not flash.
E-30 Stop lamp does not light up or does not go out.
E-31 Backup lamp does not light up or does not go out
E-32 All wipers do not operate
E-33 Front wiper does not operate
E-34 Rear wiper does not operate
E-35 Left and right door wiper does not operate
E-36 Left door wiper does not operate
E-37 Right door wiper does not operate
E-38 Front or door washer does not operate
E-39 Rear washer does not operate
E-40 KOMTRAX system does not operate normally.
Troubleshooting of hydraulic and mechanical system (H-mode)
How to use troubleshooting table
H-1 Engine speed drops significantly or engine stalls
H-2 Machine does not move off.
H-3 Gear speed does not shift.
H-4 Travel speed or power is low.
H-5 Torque converter lockup does not operate or is not canceled.
H-6 Machine starts or gear speed shifts with long time lag.
H-7 Torque converter oil temperature is high.
H-8 Differential gear lock function does not operate or is not canceled.
H-9 Steering speed or power is insufficient.
H-10 Steering wheel does not move
H-11 Wheel brakes do not work or are weak
H-12 Wheel brakes are not released or drag
H-13 Parking brake does not work or it is weak
H-14 Parking brake (including emergency release system) is not released or drags
H-15 All work equipment operates slowly or lacks power
H-16 Work equipment does not operate.
H-17 Unusual noise is heard from around hydraulic pump
H-18 Blade lift speed or power is low.
H-19 Hydraulic drift of lifted blade is large.
H-20 Drawbar side shift speed or power is low
H-21 Blade side shift speed or power is low.
H-22 Power tilt speed or power is low.
H-23 Articulate speed or power is low.
H-24 Leaning speed or power is insufficient.
H-25 Hydraulic drift (tilting) of leaning is large.
H-26 Blade does not rotate.
H-27 Lifter lock pin is not locked or is not canceled.
H-28 Fan revolution is abnormal (Fan sound/vibration is abnormally large or engine overheats)
Troubleshooting of engine (S-mode)
How to read matrix
S-1 Engine startability is poor.
S-2 Engine does not start.
S-3 Engine does not pick-up smoothly.
S-4 Engine stops during operation.
S-5 Engine runs rough or is unstable.
S-6 Engine lacks power.
S-7 Exhaust smoke is black (Incomplete combustion)
S-8 Large oil consumption (or blue exhaust gas)
S-9 Oil becomes contaminated early.
S-10 Fuel consumption is excessive.
S-11 Oil is in coolant (or coolant spurts back or coolant level goes down)
S-12 Oil pressure drops.
S-13 Oil amount increases (due to water or fuel mixing).
S-14 Coolant temperature rises too high (overheating).
S-15 Unusual noise is heard.
S-16 Vibration is excessive.
Contents
Acronyms
50 Disassembly and assembly
Contents
Acronyms
Related information on disassembly and assembly
How to read this manual
Coating materials list
Special tool list
Sketches of special tools
Engine and cooling system
Removal and installation of supply pump assembly
Removal and installation of injector assembly
Removal and installation of cylinder head assembly
Removal and installation of air conditioner compressor belt
Removal and installation of alternator belt
Removal and installation of engine front oil seal
Removal and installation of engine rear oil seal
Removal and installation of cooling fan pump assembly
Removal and installation of cooling fan and fan motor assembly
Removal and installation of radiator assembly
Removal and installation of aftercooler assembly
Removal and installation of power train oil cooler assembly
Removal and installation of fuel tank assembly
Removal and installation of engine hood assembly
Removal and installation of air conditioner compressor assembly
Power train
Removal and installation of engine, transmission, and torque converter assembly
Disconnection and connection of engine, transmission, and torque converter assembly
Disassembly and assembly of torque converter assembly
Disassembly and assembly of transmission assembly
Removal and installation of tandem drive and final drive assembly
Disassembly and assembly of tandem drive assembly
Disassembly and assembly of differential assembly
Disassembly and assembly of final drive assembly
Steering system
Removal and installation of Orbitrol valve assembly
Brake system
Disassembly and assembly of wheel brake assembly
Undercarriage and frame
Removal and installation of center hinge pin
Hydraulic system
Removal and installation of hydraulic tank, battery, and frame assembly
Removal and installation of hydraulic tank assembly
Removal and installation of control valve assembly
Disassembly and assembly of hydraulic cylinder assembly
Work equipment
Removal and installation of blade assembly
Removal and installation of circle drawbar assembly
Removal and installation of circle rotation gear assembly
Disassembly and assembly of circle rotation gear assembly
Cab and its attachments
Removal and installation of operator’s cab assembly
Removal and installation of operator cab glass (adhered glass)
Removal and installation of floor frame assembly
Removal and installation of operator’s cab and floor frame assembly
Removal and installation of air conditioner unit assembly
Removal and installation operator’s seat
Removal and installation seat belt
Electrical system
Removal and installation of engine controller assembly
Removal and installation of machine monitor assembly
Removal and installation of transmission controller assembly
Removal and installation of rearview camera
Removal and installation of KOMTRAX terminal assembly
60 Maintenance standard
Contents
Acronyms
Engine and cooling system
Engine mount and transmission mount
Cooling system
Cooling fan motor
Power train system
Torque converter
Transmission
Main relief valve and torque converter relief valve
Front axle
Rear axle
Differential (Non-differential specification)
Differential (Differential lock specification)
Final drive
Differential lock solenoid valve
Tandem drive
Steering system
Steering cylinder
Brake system
Wheel brake
Parking brake
Undercarriage and frame
Frame and center hinge pin
Hydraulic system
Hydraulic tank
Work equipment pump and steering pump
Power train pump
Power train pump and differential lock pump
Parking brake solenoid valve and lifter lock pin solenoid valve
Leaning cylinder
Articulate cylinder
Blade lift cylinder
Drawbar shift cylinder
Blade side shift cylinder
Power tilt cylinder
Scarifier cylinder
Ripper cylinder
Work equipment
Circle and drawbar
Blade
Lifter
Circle rotation gear
Ripper
80 Appendix
Contents
Acronyms
Air conditioner system
Precautions for refrigerant
Air conditioner component
Specifications of air conditioner
Configuration and function of refrigeration cycle
Outline of refrigeration cycle
Component parts of air conditioner system
Air conditioner unit
Component parts of air conditioner unit
Compressor
Condenser
Receiver drier
Explanation of procedure for testing and troubleshooting of air conditioner
Circuit diagram and arrangement of connector pins for air conditioner
Air conditioner system diagram
Input and output signals of air conditioner control panel
Installation locations of air conditioner parts and arrangement of connectors
Testing air leakage (duct)
Method for testing air leakage (duct)
Testing air conditioner using self-diagnosis function
Check temperature control function
Method for checking temperature control function
Testing fresh/recirc air changeover
Method for testing fresh/recirc air changeover
Test evaporator temperature sensor
Method for checking evaporator temperature sensor
Test relays
Method for testing relays
Check blower AMP
Method for checking blower AMP
Air conditioner troubleshooting chart 1
Air conditioner troubleshooting chart 2
Information described in troubleshooting table
A-1 Troubleshooting for power supply system (air conditioner does not operate)
A-2 Troubleshooting for compressor and refrigerant system (air is not cooled)
A-3 Troubleshooting for blower motor system (no air comes out or air flow is abnormal)
A-4 Troubleshooting for temperature control function
A-5 Troubleshooting for fresh/recirc air changeover
A-6 Troubleshooting for hot water cut valve
Troubleshooting using gauge pressure
Connection of service tool
Method for connecting service tool
Precautions for disconnecting and connecting hoses and tubes in air conditioner pipings
Handle compressor oil
90 Diagrams and drawings
Contents
Acronyms
Hydraulic diagrams and drawings
Symbols used in hydraulic circuit diagrams
Hydraulic circuit diagram
Power train hydraulic circuit diagram
Electrical diagrams and drawings
Symbols used in electric circuit diagrams
Chassis electric circuit diagram
Floor electric circuit diagram
Index
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