Description
Komatsu D61EXi-23 D61PXi-23 Workshop Manual for Japan-specification bulldozers with serial numbers 30324 and up.
This comprehensive 1,938-page manual contains detailed technical information for servicing, maintaining, diagnosing and repairing the Komatsu D61EXi-23 and D61PXi-23 crawler bulldozers. It is suitable for professional mechanics, plant engineers, service technicians and experienced owners responsible for maintaining these machines.
The Komatsu D61EXi-23 D61PXi-23 Workshop Manual explains the construction and operation of the machine’s mechanical, hydraulic, electrical, electronic and intelligent control systems. Detailed specifications, diagrams, illustrations and step-by-step procedures support accurate diagnosis and repair.
This edition specifically covers Japan-market D61EXi-23 and D61PXi-23 machines beginning with serial number 30324. Machines produced for different markets or serial-number ranges may use different components, settings or procedures, so the complete model and serial number should always be confirmed before beginning work.
Workshop manual coverage includes:
Engine and related systems – Detailed information covering the diesel engine, fuel system, lubrication system, cooling equipment, air intake, exhaust system, engine mounting and associated components.
Power train – Technical descriptions and repair procedures for the torque converter, transmission, drive shafts, steering system, brakes, final drives and related power-transmission components.
Undercarriage – Inspection, servicing and repair information for track assemblies, track frames, rollers, carrier rollers, idlers, sprockets, recoil mechanisms, track tension and associated equipment.
Hydraulic system – Structure, operation, testing and repair information for hydraulic pumps, control valves, cylinders, tanks, filters, hoses, pipework and hydraulic circuits.
Work equipment – Detailed service procedures for the blade, lift cylinders, tilt mechanism, linkages, pins, mountings and ripper equipment where fitted.
Electrical system – Information covering batteries, starting, charging, wiring, connectors, switches, sensors, lighting, monitoring equipment and electrical controls.
Electronic control equipment – Explanations and diagnostic procedures for electronic control units, sensors, warning systems, monitors and related machine-control components.
Intelligent machine-control system – Technical information relating to the integrated control equipment fitted to the D61EXi-23 and D61PXi-23 models, including equipment associated with automated blade-control operation.
Operator’s compartment – Removal, installation and servicing information covering the cab, seat, pedals, control levers, display equipment, heating, ventilation and air-conditioning components.
Testing and adjustment – Procedures for measuring hydraulic pressures, operating speeds, electrical values, component clearances and overall machine performance.
Troubleshooting – Symptom-based diagnostic information for locating mechanical, hydraulic, electrical and electronic faults. Possible causes and recommended checks help technicians follow a logical diagnostic sequence.
Disassembly and assembly – Step-by-step instructions for removing, dismantling, inspecting, rebuilding and reinstalling major machine assemblies.
Maintenance standards – Standard dimensions, permissible wear limits, clearances, inspection criteria and other measurements used when deciding whether components remain serviceable.
The Komatsu D61EXi-23 D61PXi-23 Workshop Manual is particularly useful when investigating difficult starting, reduced engine power, overheating, transmission problems, steering difficulties, ineffective braking, hydraulic weakness, slow blade operation, electrical failures or warning indications.
Following the correct testing sequence can help identify the source of a problem before unnecessary dismantling begins. Hydraulic pressures, electrical signals, operating speeds and mechanical clearances can be compared with the manufacturer’s specifications to determine whether a system is functioning correctly.
The structure and function sections explain how individual systems and components operate. This background information is valuable when a fault involves several connected systems, such as an electrical control problem affecting hydraulic operation or an incorrect sensor signal influencing machine performance.
Detailed disassembly and assembly procedures support major workshop repairs involving the engine, transmission, steering and brake equipment, final drives, hydraulic pumps, control valves, cylinders, work equipment and undercarriage assemblies.
Removal and installation instructions show the correct sequence for accessing and replacing major components. Important precautions, measurements and tightening requirements are included to reduce the risk of damage, contamination or incorrect assembly.
The manual can also be used after repairs to confirm that the machine has been correctly adjusted. Repeating the appropriate tests allows technicians to compare the repaired machine with the specified operating standards before it is returned to service.
Preventative maintenance information can help identify developing wear before it causes a serious breakdown. Regular inspection of the tracks, undercarriage, hydraulic components, electrical equipment and work equipment can reduce unexpected downtime and support more effective repair planning.
Workshops can use the Komatsu D61EXi-23 D61PXi-23 Workshop Manual when preparing repair estimates, identifying the equipment required for a job and determining whether components need adjustment, overhaul or replacement.
Machine coverage:
Komatsu D61EXi-23 Japan Bulldozer – Serial Number 30324 and up
Komatsu D61PXi-23 Japan Bulldozer – Serial Number 30324 and up
The EX and PX versions use different track and undercarriage arrangements to suit different ground conditions and operating requirements. Technicians should confirm the exact model before applying specifications or ordering replacement components.
This manual should not be confused with publications for standard D61EX-23 and D61PX-23 machines without the “i” model designation. The intelligent machine-control equipment requires the correct technical information and diagnostic procedures.
With 1,938 pages of detailed service information, the Komatsu D61EXi-23 D61PXi-23 Workshop Manual provides an extensive reference for routine servicing, fault diagnosis, testing, adjustment, component repair and complete machine overhaul.
Supplied as a digital PDF workshop manual for use on a workshop computer, laptop or compatible device.
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