2001 Komatsu PC03-2 Hydraulic Excavator Operation & Maintenance Manual (P/N SEAM040600)

The Komatsu PC03-2 Operation & Maintenance Manual, publication SEAM040600, covers hydraulic excavators with serial numbers 21587 and up and the 2D68E-3A diesel engine. This April 2001 edition covers operation, scheduled maintenance and basic troubleshooting.

Search and navigation: OCR text supports searching, with some recognition gaps. Section bookmarks are included, though some interval labels in the bookmarks and contents differ from the service pages. MAIN MENU points to a separate file. Small booster-cable connection labels require zooming.

• Operation and safety: Control-lever and pedal functions, prestart inspections, cold-weather starting, machine transport, safety-label locations and bucket-with-hook precautions.

• Engine and cooling: Engine-oil and filter changes, fuel-filter replacement and air bleeding, air-cleaner service, cooling-system flushing and fan-belt adjustment.

• Rubber tracks and final drives: Rubber-shoe inspection, tension adjustment and replacement, plus oil-level checks and oil changes for the final-drive gear cases.

• Hydraulic maintenance: Filter-cartridge replacement, tank-oil changes, strainer cleaning and service-interval charts for machines operating a hydraulic breaker.

• Electrical troubleshooting: Fuse-circuit identification, fusible-link checks, battery care and booster-cable connection diagrams, with fault charts for starting and warning-lamp problems.

• Work equipment and attachments: Bucket replacement, swing-circle and linkage lubrication, optional buckets and long-arm specifications, and one-way/two-way auxiliary piping controls.

This manual is intended for trained, authorized operators and maintenance personnel responsible for the PC03-2's operation and upkeep.

Operation, Work Equipment and Attachments

This manual details operating procedures from the controls and daily walk-around inspections to jobsite hazards, including high-voltage lines. Control-lever views show boom, arm, bucket and blade functions, with precautions for boom-cylinder contact with the blade and checks for seat-belt mountings.

The attachment sections distinguish one-way hydraulic flow for a breaker from two-way flow for an auger or crusher. They also cover the special bucket with hook and direct lifting-limit checks to the capacity table attached to the machine.

Bucket replacement illustrations identify the bushing seals and O-rings that can be damaged during removal or installation.

Scheduled Maintenance and Undercarriage Care

Factory schedules distinguish initial services from recurring maintenance. Breaker-use charts relate hydraulic-oil and filter replacement intervals to the proportion of time spent using the breaker, helping plan maintenance for attachment work instead of applying the standard bucket-digging schedule.

Rubber-shoe illustrations cover lug wear, exposed or broken steel cords, missing cores and cracking, with criteria for repair or replacement. Track-tension inspection and shoe replacement are specified as two-person jobs.

Reference tables cover lubricant selection, specified versus refill capacities and standard tightening torques. The wear-parts list identifies filters, bucket teeth, fuses and the battery; the tool list includes hydraulic-filter wrench 09019-10080 and fuel-filter wrench YM171051-92760.

Engine and Cooling-System Service

Cooling-system coverage includes radiator reserve-tank checks, antifreeze mixing tables and radiator-fin cleaning. The manual warns that an air jet too close to the radiator can damage the fins and lead to leakage or overheating.

Valve-clearance adjustment, fuel-injection pump or nozzle work, and alternator or starter inspection and repair are referred to a Komatsu distributor. This operation and maintenance manual does not provide internal engine overhaul procedures.

Electrical Checks and Fault Charts

The six-circuit fuse table lists fuse ratings for the work lamp, solenoid/horn circuit, warning lamp, additional light, beacon and travel alarm. Electrical illustrations include booster-cable connections; full machine wiring schematics are outside this manual's scope.

Engine, chassis and electrical troubleshooting tables link symptoms to likely causes and identify repair work assigned to the distributor. A separate section explains normal behavior, such as momentary arm-speed changes and swing brake-valve noise, that can otherwise be mistaken for a fault.

Always wait for the engine and hydraulic oil to cool down before opening pressurized systems.

PDF Contents and Included Pages

This is one printable 210-page PDF: 205 pages of manual sections, including dividers and three memo pages; one front cover; three preliminary warning, emissions-warranty and engine-dataplate pages; and one publication back page. All are included in the total. Operating and maintenance content is in English; the emissions-warranty and engine-dataplate pages also include French.