Komatsu PC228US-3 PC228USLC-3 Shop Manual 30001 and Up PDF Download

Description

Komatsu PC228US-3 / PC228USLC-3 Shop Manual

This 672-page shop manual provides detailed service-workshop information for Komatsu PC228US-3 and PC228USLC-3 machines with serial numbers 30001 and up. Document number SEBM030506 covers machine structure and function, maintenance standards, testing and adjustment, troubleshooting, component removal and installation, disassembly and assembly, plus hydraulic and electrical circuit diagrams.

Models and Serial Numbers Covered

• PC228US-3 — Serial No. 30001 and up
• PC228USLC-3 — Serial No. 30001 and up
• Engine identified in the manual: SAA6D102E-2

The manual states that the PC228US-3 and PC228USLC-3 mount the SAA6D102E-2 engine. Engine-related service information is included, while the manual directs readers to the 102 Series Engine Shop Manual for detailed engine coverage.

Major Systems and Subjects Included

• Engine-related parts, radiator, oil cooler and aftercooler
• Power train, final drive, swing circle and swing machinery
• Track frame, recoil spring, idler, carrier roller, track roller and track shoe
• Hydraulic tank and hydraulic pump
• LS-EPC valve, control valve, main relief valve and pressure-control valves
• CLSS and self pressure reducing valve
• Swing motor, center swivel joint and travel motor
• Travel and work-equipment PPC valves
• Solenoid valves, accumulator and return oil filter
• Boom hydraulic drift prevention and holding valves
• Hydraulic cylinders and work equipment
• Air conditioner
• Engine control and electronic control systems
• Monitor system and sensors

Testing, Adjustment and Troubleshooting

The manual includes standard-value tables for both the engine and chassis together with procedures for testing, adjustment and fault diagnosis. Coverage includes engine speed, exhaust-gas color, valve clearance, compression and blow-by pressure, fuel-injection timing, engine oil pressure, swing-circle clearance, track tension and hydraulic-system checks.

• Hydraulic pressure checks for work equipment, swing and travel circuits
• Pump PC and LS control circuit pressure inspection and adjustment
• Solenoid and PPC valve output-pressure measurement
• Hydraulic drift and oil-leakage inspection
• Residual hydraulic pressure release and air bleeding
• Monitor-panel service functions
• Electrical-system troubleshooting with connector information and circuit diagrams
• Hydraulic and mechanical troubleshooting charts for power, travel, swing and work-equipment faults

Disassembly, Assembly and Component Service

A substantial section provides removal, installation, disassembly and assembly procedures with precautions, special-tool information, specified tightening torques, fluid quantities and component-handling instructions.

• Engine assembly, front seal and rear seal
• Radiator, hydraulic oil cooler and aftercooler
• Fuel tank
• Center swivel joint
• Travel motor and final drive
• Swing motor and swing machinery
• Revolving frame and swing circle
• Recoil spring, idler, track rollers and track shoes
• Hydraulic tank, hydraulic pump and control valve
• Work-equipment and travel PPC valves
• Hydraulic cylinders and work equipment
• Operator cab and floor frame
• Air-conditioner compressor, condenser and unit
• Counterweights, monitor panel, cab glass and front window

Hydraulic and Electrical Diagrams

The final section includes a dedicated hydraulic circuit diagram and a four-part electrical circuit diagram. These diagrams complement the troubleshooting and system-function sections when tracing hydraulic operation, electrical circuits and machine-control faults.

Why This Manual Is Useful

This manual brings service standards, diagnostic procedures, system explanations and major component repair instructions together in one detailed reference for the covered PC228US-3 and PC228USLC-3 serial range. It is particularly useful when checking operating values, diagnosing hydraulic or electrical faults, identifying component relationships, or carrying out removal, installation and overhaul work according to the procedures and values shown in the document.

Instant PDF Download

Supplied as a digital PDF for immediate access after payment. View it on a computer, tablet or compatible mobile device and keep the complete 672-page manual available when needed.