Description
Komatsu D85EX-15 D85PX-15 Workshop Manual containing 935 pages of detailed service, maintenance, testing, troubleshooting and repair information for Komatsu D85EX-15 and D85PX-15 bulldozers.
This comprehensive workshop manual is intended for professional service engineers, workshop technicians, construction companies, machinery owners and experienced mechanics. It provides the technical information required for routine servicing, systematic fault diagnosis, component repair and major machine overhaul work.
The Komatsu D85EX-15 D85PX-15 Workshop Manual is arranged into logical sections covering the bulldozer’s principal mechanical, hydraulic and electrical systems. Technical explanations, illustrations, sectional diagrams, specifications and step-by-step procedures help technicians understand how each system operates and how it should be repaired correctly.
General information explains important service precautions, machine identification details and the correct approach to workshop repairs. Following the stated procedures and safety information can help prevent accidental damage to components during dismantling, inspection and reassembly.
Engine sections cover the principal engine assemblies and their supporting systems. The procedures include inspection, testing, adjustment, removal, installation, dismantling and assembly. This information is valuable when carrying out normal engine servicing or investigating faults such as difficult starting, loss of power, overheating, abnormal noise, excessive smoke or fluid leakage.
Fuel-system coverage includes information for the applicable fuel supply and injection components. Air intake and exhaust sections explain the arrangement and servicing of the relevant components. Cooling-system information helps technicians investigate overheating, coolant loss and circulation problems, while lubrication sections cover the parts responsible for maintaining the correct oil flow and pressure.
The power train sections explain how engine power is transferred through the machine to the tracks. Coverage includes the applicable torque converter, transmission, shafts, gears, bearings, housings and related control components. Technical specifications and testing procedures help diagnose poor travel performance, loss of drive, overheating, vibration and abnormal operating noise.
Steering and brake systems are covered with operating explanations, testing instructions, adjustment procedures and repair information. These sections assist with diagnosing poor steering response, uneven operation, brake problems and other faults affecting machine control.
Final-drive information includes the procedures needed to inspect, remove, disassemble, repair, reassemble and install the applicable components. Measurements and maintenance standards help establish whether gears, bearings, shafts and related parts remain within acceptable service limits.
Undercarriage sections cover the tracks, rollers, idlers, sprockets, frames and associated components. These parts operate in demanding conditions and are subject to regular wear. Correct inspection and adjustment can help extend component life and prevent excessive wear from causing damage elsewhere in the undercarriage.
The Komatsu D85EX-15 D85PX-15 Workshop Manual provides service data and repair guidance for assessing the condition of undercarriage components. The information is useful when planning routine maintenance, replacing worn parts or undertaking a larger undercarriage rebuild.
Hydraulic-system coverage includes pumps, control valves, cylinders, tanks, filters, hoses, pipes and connections. Hydraulic circuit diagrams show the relationship between the principal components, while testing procedures provide pressure and performance specifications for accurate diagnosis.
These hydraulic sections help investigate weak or slow blade operation, drifting equipment, overheating, unusual noise, pressure loss and oil leakage. Following a logical testing sequence can identify the cause of a problem before expensive hydraulic components are removed or replaced.
Work equipment information covers the bulldozer blade, lifting and tilting mechanisms, frames, linkages, cylinders and related mounting components. Procedures include inspection, adjustment, removal, repair and installation of the applicable assemblies.
Electrical-system sections cover the starting and charging circuits, batteries, wiring, switches, instruments, lights, sensors and monitoring equipment. Wiring diagrams and diagnostic information help technicians locate faulty connections, damaged wiring and defective electrical components.
Operator station information covers the applicable controls, levers, pedals, instruments, panels and cab equipment. These sections support repairs to components that affect machine control, safety, monitoring and operator comfort.
Testing and adjustment procedures provide the specifications required to measure machine performance. Depending on the system, these checks can include operating pressures, speeds, clearances, temperatures and control movement. Tests can be completed during diagnosis and repeated after repair to confirm that the machine operates within the required limits.
Troubleshooting sections organise faults by their visible or reported symptoms. Each section directs the technician through a systematic sequence of possible causes and checks. This structured method can reduce diagnostic time, prevent unnecessary dismantling and avoid replacing serviceable parts.
Detailed disassembly and assembly procedures explain how major components should be removed, dismantled, inspected, repaired, reassembled and installed. Illustrations show the position and relationship of individual parts, while the written instructions provide the correct sequence of work.
Where applicable, the procedures include important precautions, tightening information, adjustment requirements, special working instructions and recommendations for replacing seals or worn components. Using the correct information helps protect repaired assemblies from premature failure.
Maintenance standards provide dimensions, tolerances and wear limits for important parts. These specifications allow technicians to compare measured components with the manufacturer’s stated standards and decide whether they are suitable for continued use or require replacement.
Machine coverage:
Komatsu D85EX-15 Bulldozer
Komatsu D85PX-15 Bulldozer
The EX and PX versions may have differences in their undercarriage configuration, operating application and related equipment. This workshop manual contains the applicable information for both models.
Always check the complete model designation and serial number shown on the machine identification plate before ordering. Komatsu produced several versions of the D85 bulldozer, and manuals for other production ranges may contain different components, specifications or repair procedures.
With 935 pages of technical information, this manual provides a valuable reference for maintaining and repairing these Komatsu bulldozers. Having the correct workshop information available can improve diagnostic accuracy, reduce repair time and help prevent mistakes caused by using procedures intended for another model.
The Komatsu D85EX-15 D85PX-15 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 maintenance and repair records.
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