Description
Komatsu D155A-6 85001-UP Workshop Manual provides comprehensive service, testing, maintenance, troubleshooting and repair information for Japanese-market D155A-6 bulldozers from serial number 85001 and up.
This extensive 1,179-page workshop manual contains the technical information required to inspect the machine, diagnose faults and complete routine servicing or major repairs. It is suitable for professional engineers, plant repair workshops, fleet maintenance departments and experienced owners maintaining this Komatsu bulldozer.
The manual contains detailed technical specifications, system descriptions, testing procedures, adjustment instructions and step-by-step repair guidance. Illustrations, sectional drawings and diagrams assist with component identification, dismantling, inspection, reassembly and installation.
ENGINE AND ASSOCIATED SYSTEMS
The engine sections provide information for inspecting, testing, servicing and repairing the engine and its supporting systems. Specifications and measurement information can be used to determine component condition and identify excessive wear.
Engine-related information includes:
• Engine specifications and technical data
• Cooling-system inspection and servicing
• Fuel-system components and operation
• Lubrication-system information
• Air-intake and exhaust components
• Engine testing and adjustment
• Component inspection procedures
• Engine removal and installation guidance
POWERTRAIN AND TRANSMISSION
The powertrain sections explain the construction and operation of the components responsible for transferring engine power through the machine. Testing and troubleshooting information can help identify the cause of poor performance, abnormal operation or unusual noise.
Powertrain information includes:
• Torque converter and transmission
• Drive shafts and connecting components
• Steering-system components
• Brake-system components
• Final-drive assemblies
• Powertrain testing procedures
• Adjustment and inspection information
• Component removal and installation
• Dismantling and assembly guidance
HYDRAULIC SYSTEM
Detailed hydraulic information assists engineers with understanding the operating circuits and diagnosing pressure, leakage or performance problems.
Hydraulic subjects include:
• Hydraulic-system specifications
• Hydraulic circuit information
• Pumps and pump-control components
• Main control valves
• Blade lift and tilt circuits
• Hydraulic cylinders and pipework
• Pressure testing and adjustment
• Leakage and performance checks
• Hydraulic troubleshooting procedures
• Component removal and installation
UNDERCARRIAGE AND WORK EQUIPMENT
The undercarriage requires regular inspection because its components operate under demanding conditions. The manual provides information for checking wear, completing adjustments and repairing the track system.
Undercarriage and work-equipment information includes:
• Track frames and track assemblies
• Track chains, shoes and links
• Track rollers and carrier rollers
• Front idlers and sprockets
• Track-tension adjustment
• Wear limits and inspection procedures
• Blade and mounting components
• Work-equipment linkages
• Pins, bushes and related components
• Removal and installation procedures
ELECTRICAL SYSTEM
The electrical sections contain system information and testing procedures for diagnosing electrical faults. Diagrams and component information help engineers trace circuits and identify the correct inspection points.
Electrical information includes:
• Battery and electrical connections
• Starting and charging systems
• Switches, relays and sensors
• Warning and monitoring equipment
• Instruments and gauges
• Wiring and electrical circuits
• Electrical testing procedures
• Fault diagnosis and troubleshooting
• Component removal and installation
TESTING AND ADJUSTMENT
The Komatsu D155A-6 85001-UP Workshop Manual provides testing and adjustment information for checking the operating condition of the machine and its major systems.
Specifications, standard values and wear limits allow measurements to be compared with the manufacturer’s technical information. These procedures help determine whether adjustment, repair or component replacement is required.
Testing and adjustment subjects include:
• Standard service measurements
• Pressure and performance checks
• Inspection standards and wear limits
• Machine operating tests
• Adjustment procedures
• Fault symptoms and possible causes
• Recommended diagnostic checks
• Corrective action guidance
TROUBLESHOOTING AND REPAIR
Troubleshooting information helps engineers follow an organised sequence of checks when investigating mechanical, hydraulic or electrical problems. This can reduce unnecessary dismantling and prevent serviceable components from being replaced.
Repair procedures explain how to remove, inspect, dismantle, assemble and reinstall major components. The correct tools, safe lifting equipment and appropriate workshop procedures should always be used during repair work.
MODEL COVERED
Komatsu D155A-6 Bulldozer
MARKET VERSION
Japan
SERIAL NUMBERS COVERED
S.N. 85001 and up
MANUAL DETAILS
Manual type: Workshop Manual
Format: Digital PDF
Language: English
Number of pages: 1,179
The machine model and serial number should be checked before purchase to confirm that this is the correct manual. The serial number is normally shown on the machine identification plate.
This workshop manual is intended for detailed mechanical diagnosis and repair. The corresponding operation and maintenance manual should also be used for everyday operating instructions, safety information and routine service schedules.
The Komatsu D155A-6 85001-UP Workshop Manual is an essential technical reference for owners, engineers and workshops responsible for this particular D155A-6 production range. It provides the specifications, diagrams and procedures needed to investigate faults and complete repairs correctly.
Download instructions are supplied following purchase, allowing the complete digital PDF manual to be delivered electronically.
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