Komatsu D85EX-15EO D85PX-15EO Workshop Manual

Description

Komatsu D85EX-15EO D85PX-15EO Workshop Manual containing 1,246 pages of detailed service, maintenance, testing, troubleshooting and repair information for Komatsu D85EX-15EO and D85PX-15EO bulldozers.

This comprehensive technical manual is intended for professional service engineers, workshop technicians, plant operators, construction companies, machinery owners and experienced mechanics. It provides the information required to perform routine maintenance, diagnose operating faults, repair individual systems and undertake major component overhauls.

The Komatsu D85EX-15EO D85PX-15EO Workshop Manual is divided into clearly organised sections covering the machine’s principal mechanical, hydraulic and electrical systems. Technical explanations, specifications, illustrations, sectional diagrams and step-by-step procedures help the technician understand how each system functions and how it should be repaired.

General service information explains workshop precautions, machine identification and recommended repair practices. Following the correct working procedures can help prevent damage to components and improve the reliability of the finished repair.

Engine sections cover the principal engine assemblies and supporting systems fitted to these bulldozers. Procedures include inspection, testing, adjustment, removal, installation, disassembly and reassembly. This information can assist with routine engine servicing and the diagnosis of poor performance, difficult starting, excessive smoke, overheating, abnormal noise and fluid leakage.

Fuel-system information covers the applicable fuel supply, filtration and injection components. The air intake and exhaust sections explain the arrangement and servicing of the relevant parts. Cooling-system procedures help identify overheating, coolant loss and circulation problems, while lubrication-system information covers components responsible for maintaining the correct engine oil flow and pressure.

Power train coverage explains how power is transmitted from the engine to the tracks. The relevant sections cover the applicable torque converter, transmission, control components, shafts, gears, bearings and housings. Technical data and testing procedures help technicians investigate poor travel performance, loss of drive, overheating, unusual vibration or abnormal operating noise.

Steering and brake systems are covered with descriptions of operation, testing instructions, adjustment procedures and repair information. These sections are useful when diagnosing poor steering response, uneven operation, ineffective braking or other problems affecting machine movement and control.

Final-drive information includes procedures for inspection, removal, dismantling, repair, reassembly and installation. Service measurements and wear standards help determine whether gears, shafts, bearings and related components remain suitable for use or require replacement.

The undercarriage sections cover tracks, rollers, idlers, sprockets, frames and associated components. These parts operate continuously in demanding working conditions and require regular inspection and correct adjustment. The manual provides the technical information needed to evaluate wear and complete the relevant service work.

Correct undercarriage maintenance can extend component life and reduce the risk of excessive wear causing additional damage. The Komatsu D85EX-15EO D85PX-15EO Workshop Manual provides a valuable reference when replacing worn parts or completing a more extensive undercarriage repair.

Hydraulic-system information covers the pumps, control valves, cylinders, tanks, filters, hoses, pipes and connections used to operate the machine’s work equipment. Hydraulic circuit diagrams show how the principal components are connected, while testing procedures provide the pressure and performance specifications required for accurate diagnosis.

The hydraulic sections can help identify weak or slow blade operation, hydraulic drift, pressure loss, overheating, abnormal noise and external or internal oil leakage. Following the correct sequence of tests can prevent unnecessary removal or replacement of expensive hydraulic components.

Work equipment information covers the bulldozer blade, lift and tilt arrangements, frames, linkages, cylinders and associated mounting components. Procedures explain how the relevant assemblies should be inspected, adjusted, removed, repaired and installed.

Electrical-system sections cover the starting and charging circuits, batteries, wiring, switches, sensors, instruments, lighting and monitoring equipment. Wiring diagrams and testing information allow electrical faults to be traced logically and help distinguish between defective components, damaged wiring and poor connections.

Operator station information covers the applicable controls, levers, pedals, instruments, panels and cab equipment. These sections support repairs to components that affect machine operation, monitoring, safety and operator comfort.

Testing and adjustment procedures provide the specifications required to assess machine performance. Depending on the system, these measurements can include operating pressures, speeds, temperatures, clearances and control movement. The tests can be used during diagnosis and repeated after repair to verify correct operation.

Troubleshooting information organises faults according to their symptoms and guides the technician through a systematic sequence of checks. This approach can reduce diagnostic time, prevent unnecessary dismantling and avoid replacing serviceable parts without proper testing.

Detailed disassembly and assembly procedures explain how major components should be removed from the bulldozer, dismantled, inspected, repaired, reassembled and installed. Illustrations show component positions and assembly arrangements, while written instructions provide the correct sequence for completing each operation.

Where applicable, the procedures include service precautions, tightening information, adjustment requirements and recommendations for replacing seals, gaskets and worn components. Following these instructions helps protect repaired assemblies from contamination, incorrect adjustment and premature failure.

Maintenance standards provide dimensions, tolerances and wear limits for important parts. Technicians can compare their measurements with the manufacturer’s stated specifications to decide whether components remain suitable for service.

Machine coverage:

Komatsu D85EX-15EO Bulldozer
Komatsu D85PX-15EO Bulldozer

The EX and PX versions may have differences in their undercarriage configuration, application and related components. This workshop manual contains the applicable technical information for both model variants.

Always check the complete model designation and serial number displayed on the machine identification plate before ordering. The EO designation forms part of the model identification and should not be confused with manuals for the standard D85EX-15 or D85PX-15. Other versions may use different systems, components and repair specifications.

With 1,246 pages of detailed technical information, this workshop manual is an extensive reference for servicing and repairing these Komatsu bulldozers. Using the correct manual can improve fault diagnosis, reduce repair time and help prevent mistakes caused by following procedures intended for another model.

The Komatsu D85EX-15EO D85PX-15EO Workshop Manual is supplied as a digital PDF suitable for viewing on a compatible computer, laptop or tablet. It can be retained as a permanent workshop reference and as part of the machine’s service and maintenance records.