1998–Present Komatsu PC60-7 Hydraulic Excavator Shop Manual (P/N SEBM004101)

This Komatsu PC60-7 shop manual, publication SEBM004101 (January 1998 edition), covers hydraulic excavators in Standard and Blade configurations, serial numbers 45001 thru 52373.

Text search, navigation, and diagrams: Text is partially searchable, with section and procedure bookmarks. The legacy Main Menu link requires an external file. Small wiring labels require zooming; some connector pin numbers remain difficult to read when enlarged.

• Engine service: Valve-clearance adjustment, compression and blowby testing, fuel-injection timing, engine removal, and cylinder-head removal and installation.

• Hydraulic repair: Pump-pressure and LS differential-pressure testing, PPC valve checks, control-valve disassembly, hydraulic-cylinder repair, and air-bleeding procedures.

• Swing and travel: Center-swivel-joint service, swing-machinery overhaul, swing-circle bearing checks, travel-motor removal, and travel-deviation diagnosis.

• Undercarriage: Track-tension adjustment, idler and recoil-spring service, track-roller overhaul, and track-frame inspection limits.

• Electrical diagnosis: Electrical wiring diagrams, electrical circuit diagrams, and troubleshooting charts for starting, swing-brake control, travel-speed selection, and the machine monitor.

• Automatic greasing: Controller settings, error-code diagnosis, distributor checks, and air bleeding for the pump and lubrication piping.

Written for service technicians carrying out workshop repairs and diagnosis.

Engine Variants and Repair Coverage

The specifications distinguish the Standard type's 4D95L-1 from the Blade type's 4D95L-1 and 4D95LE-1 options. Separate injection-timing procedures identify the applicable engine, including the dial-gauge method for the 4D95LE-1.

Fuel-injection-pump, nozzle-holder, water-pump, thermostat, and crankshaft-seal removal procedures supplement the engine tests. Radiator and hydraulic-oil-cooler removal are also covered. This chassis manual does not include a complete internal engine overhaul; that work requires the separate engine-series volume.

The engine-stop-solenoid adjustment section warns that incorrect linkage positioning can burn out the solenoid.

CLSS Hydraulics and Valve Variants

The Closed Center Load Sensing System (CLSS) section explains variable-displacement pump operation, TCC/LS control, and pressure compensation. Hydraulic piping drawings and hydraulic circuit diagrams show how the circuits connect.

Valve configurations: The manual describes six-spool control valves and seven- or eight-spool arrangements with added service valves. Blade-specific coverage includes the blade pump, control valve, relief valve, and cylinder.

Service PPC valve: Separate drawings and maintenance standards cover serial numbers 45001–46527 and 46528 and up, within this manual's overall coverage. These distinctions help match the valve design and spring specifications to the machine before evaluating wear or selecting replacement components.

The cylinder-leakage tests help distinguish internal cylinder leakage from control-valve faults when investigating hydraulic drift.

Swing Machinery and Undercarriage Repair

General assembly drawings and power train layouts establish component locations. Swing-machinery procedures cover planetary carriers, bearings, and seals; the special-tool list identifies recoil-spring compressor 791-685-8005 and hydraulic-cylinder repair tooling.

Center-swivel-joint assembly guidance specifically warns against damaging the slipper-seal and oil-seal lips when installing the rotor.

Electrical Controls and Auto-Greasing

The fault-finding sections separate electrical controls (E mode), engine symptoms (S mode), hydraulic and mechanical faults (H mode), machine-monitor faults (M mode), and auto-greasing faults (D mode).

Electrical wire-code charts, connector locations, pin-number tables, and sensor reference values support circuit tracing. Monitor diagnosis covers coolant and fuel gauges, warning lamps, the buzzer, and the service meter.

The auto-greasing sections identify the LC2MP controller and LD05CP motor-operated pump, with checks for pressurization, depressurization, pressure detection, and grease delivery to the work-equipment pins.

Factory Standards and Workshop Precautions

Maintenance standards provide wear limits, clearances, spring data, and pump-performance criteria. Torque tables cover standard bolts, split-flange bolts, and flared nuts in Nm and kgm.

The lubricant tables distinguish specified capacities from refill quantities and list temperature-dependent oil recommendations for the engine, PTO, swing machinery, final drives, and hydraulic system, along with cooling-system capacity.

Always ensure a certified technician reviews the diagnostic data and mounting constraints before working on pressurized hydraulic circuits or mechanical assemblies.

Printable PDF and Included Revision Pages

Supplied as one printable 502-page PDF, including one cover page, three revised-page-list sheets, 13 inserted technical pages, and one manual-revision proposal form. All of these pages are already included in the total.