Komatsu Bulldozer D375A-6R service & repair manual

Description Komatsu Bulldozer D375A-6R service & repair manual

Komatsu Bulldozer D375A-6R pdf workshop service manual

Serial numbers:
65001 and up

Specifications, testing, troubleshooting, maintenance, technical documentation, electrical diagrams, hydraulic schematics, adjusting, assembly, disassembly, removal, installation instructions and other information

MANUAL CONTENT:
Specifications
Specification drawing
Weight table
Table of fuel, coolant, and lubricants

Structure and function
Engine and cooling system
Engine related parts
KVGT
EGR system piping drawing
EGR system circuit diagram
EGR valve
EGR cooler
KCCV layout drawing
KCCV ventilator
KDPF
Damper
Cooling system
Cooling fan pump
Cooling fan motor
Power train
Power train system
HSS system
Overall drawing of power train unit
Power train mount
Layout of power train hydraulic piping
Transmission, steering, and brake control
Universal joint
Torque converter and PTO
Torque converter control valve
Lockup clutch ECMV
Stator clutch ECMV
Transmission
Transmission ECMV
Main relief valve and torque converter relief valve
Transmission lubrication relief valve
Bevel gear shaft, HSS, and brake
Brake control valve
Brake ECMV
Brake solenoid valve
Sudden stop prevention valve
Final drive
Undercarriage and frame
Main frame
Suspension
Track frame and idler cushion
Hydraulic system
Hydraulic piping drawing
Work equipment control
Hydraulic tank
CLSS
Scavenging pump
Steering lubrication pump and power train pump
Work equipment and HSS pump
HSS motor
Control valve
Quick drop valve
Work equipment lock solenoid valve
Hydraulic oil cooler bypass valve
Accumulator
Self-pressure reducing valve
Work equipment
Cylinder stay
Blade
Ripper
Piston valve
Cab and its attachments
ROPS cab
Function
Cab mount
Electrical system
Engine control
Engine control system
Palm command control system
System operating lamp function
Battery disconnect switch function
Machine monitor system
KOMTRAX system
System component parts
Sensor

Standard value tables
Standard service value table
Standard value table for engine
Standard value table for machine
Standard value table for electrical system

Testing and adjusting
General information on testing and adjusting
Tools for testing and adjusting
Sketch of tools for testing and adjusting
Engine and cooling system
Testing engine speed
Measuring boost pressure
Measuring exhaust gas temperature
Measuring exhaust gas color
Adjusting valve clearance
Measuring compression pressure
Measuring blowby pressure
Measuring engine oil pressure
Measuring EGR valve and KVGT driving oil pressure
Measuring fuel pressure
Measuring fuel delivery, return and leakage
Bleeding air from fuel system
Checking fuel circuit for leakage
Handling cylinder cutout mode operation
Handling no injection cranking operation
Replacing belt for alternator and air conditioner compressor, adjusting belt tension
Adjusting fuel control dial and decelerator pedal
Procedures for cleaning fuel doser
Writing compensation values at replacement of injector and engine controller
Power train
Measuring power train oil pressure
Adjusting transmission output shaft speed sensor (replacement procedure)
Simple test procedure for brake performance
Adjusting brake pedal
Adjusting parking brake lever
Retrieval of disabled machine by using brake release device
Undercarriage and frame
Adjusting idler clearance
Checking and adjusting track shoe tension
Hydraulic system
Releasing remaining pressure in work equipment cylinder
Measuring and adjusting work equipment and HSS oil pressures
Measuring source pressure of control circuit
Measuring work equipment lock solenoid valve output pressure
Isolating the parts causing hydraulic drift in blade and ripper
Checking fan speed
Measuring fan circuit oil pressure
Bleeding air from fan pump
Measuring internal oil leakage of work equipment cylinder
Bleeding air from work equipment cylinders
Emergency operating method when work equipment has trouble
Measuring ripper pin puller solenoid valve output pressure
Work equipment
Adjusting work equipment lock lever
Adjusting blade
Cab and its attachments
Adjusting operator's cab
Electrical system
Special functions of machine monitor
Angle adjustment of rear view camera
Handling voltage circuit of engine controller
Handling battery disconnect switch
Testing diodes
Pm clinic
Pm Clinic service
Check sheet

Troubleshooting
General information on troubleshooting
Troubleshooting points
Sequence of events in troubleshooting
Checks before troubleshooting
Inspection procedure before troubleshooting
Classification and procedures for troubleshooting
Symptom and troubleshooting numbers
Information in troubleshooting table
Connector list and layout
Connector contact identification
T-branch box and T-branch adapter table
Fuse location table
Precautions for KDPF (KCSF and KDOC) Cleaning and Replacement
Fabrication of dummy temperature sensor (for KDOC and KDPF temperature sensors)
Fabrication of short-circuit connector (for CA1883 and CA3135)
Failure codes table
Troubleshooting by failure code (Display of code)

Disassembly and Assembly
General information on disassembly and assembly
Coating materials list
Special tools list
Sketches of special tools
Engine and cooling system
Power train
Undercarriage and frame
Hydraulic system
Work equipment
Cab and its attachments
Electrical system

Maintenance standard
Engine and cooling system
Engine mount
Damper
Cooling system
Cooling fan pump
Cooling fan motor
Power train
Power train mount
Universal joint
Torque converter and PTO
Torque converter control valve
Lockup clutch ECMV
Stator cluch ECMV
Transmission
Transmission ECMV
Main relief valve and torque converter relief valve
Transmission lubrication relief valve
Bevel gear shaft, HSS, and brake
Brake control valve
Brake ECMV
Brake solenoid valve
Sudden stop prevention valve
Final drive
Sprocket
Full-scale drawing of sprocket tooth profile
Undercarriage and frame
Main frame
Suspension
Track frame and idler cushion
Idler
Track roller
Carrier roller
Track shoe
Hydraulic system
Hydraulic tank
Scavenging pump
Steering lubrication pump and power train pump
Work equipment and HSS pump
PC-EPC valve
HSS motor
Control valve
Quick drop valve
Self-pressure reducing valve
Work equipment
Cylinder stay
Blade
Cutting edge and end bit
Ripper
Blade lift cylinder
Blade tilt cylinder
Ripper lift cylinder
Ripper tilt cylinder
Cab and its attachments
Cab mount

Air conditioner components
Precautions for refrigerant
Configuration and function of refrigeration cycle
Outline of refrigeration cycle
Air conditioner unit
Air conditioner controller
Compressor
Condenser
Receiver drier
Sunlight sensor
Outer temperature sensor (outside air temperature sensor)
Procedure for testing and troubleshooting
Circuit diagram and arrangement of connector pins
System diagram
Parts and connectors layout
Testing air leakage (duct)
Testing with self-diagnosis function
Testing vent (mode) changeover
Testing FRESH/RECIRC air changeover
Testing sunlight sensor
Testing (dual) pressure switch for refrigerant
Testing relays
Troubleshooting chart
Information in troubleshooting table
Failure code list related to air conditioner
Failure code [879AKA] A/C Inner Sensor Open Circuit
Failure code [879AKB] A/C Inner Sensor Short Circuit
Failure code [879BKA] A/C Outer Sensor Open Circuit
Failure code [879BKB] A/C Outer Sensor Short Circuit
Failure code [879CKA] Ventilating Sensor Open Circuit
Failure code [879CKB] Ventilating Sensor Short Circuit
Failure code [879DKZ] Sunlight Sensor Open or Short Circuit
Failure code [879EMC] Ventilation Damper Abnormality
Failure code [879FMC] Air Mix Damper Abnormality
Failure code [879GKX] Refrigerant Abnormality
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 FRESH/RECIRC air changeover
Troubleshooting with gauge pressure
Connection of service tool
Precautions for disconnecting and connecting refrigerant piping
Handling of compressor oil

Drawings
Hydraulic circuit diagram
Symbols in hydraulic circuit diagram
Power train hydraulic circuit diagram
Electric circuit diagram
Symbols in electric circuit diagram
Air conditioner electrical circuit diagram

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