Komatsu PC200-6, PC210-6, PC220-6, PC230-6 Excavator Service Manual (P/N SEBM010106)

This 1,278-page PDF is Komatsu shop manual publication SEBM010106, a 2002 printing covering PC200/PC200LC-6, PC210/PC210LC-6, PC220/PC220LC-6, and PC230/PC230LC-6 hydraulic excavators. It is organized around service-shop testing, repair, disassembly/assembly, and maintenance-standard work. Because the procedures assume hydraulic test equipment, electrical checks, heavy-component handling, and dedicated service tools, this manual is best suited to experienced heavy-equipment technicians and mechanics rather than first-time repair work.

• Machine coverage: PC200/PC200LC-6 STD and Hyper GX, S/N 96514 and up; PC210/PC210LC-6 STD, S/N 30980 and up; PC220/PC220LC-6 STD, S/N 52852 and up; and PC230/PC230LC-6 STD, S/N 10177 and up. PC200/PC200LC material also covers rotary-arm, 2-piece-boom, and combined 2-piece-boom/rotary-arm configurations.
• Hydraulic diagnosis and adjustment: Covers work-equipment, swing, and travel pressure testing; PC and LS valve checks; PPC and EPC control pressures; travel-deviation testing; hydraulic-drift diagnosis; oil-leakage measurement; residual-pressure release; swing-circle bearing checks; track-shoe adjustment; and hydraulic air bleeding.
• Major teardown and repair: Includes removal, installation, disassembly, and assembly coverage for the main pump, control valve, final drive, travel motor, swing motor and swing machinery, center swivel joint, recoil spring, idlers and rollers, hydraulic cylinders, boom, arm, bucket, and complete work equipment.
• Hyper GX and electronic-system work: Documents GX controller input/output functions, GX panel background modes, automatic-function checks, swing-back-prevention adjustment through swing teaching mode, custom-bucket dimension input, sensor replacement, and Hyper GX-specific controller and work-equipment component service.
• Factory schematics and section views: Provides hydraulic piping drawings, STD and Hyper GX hydraulic circuit diagrams, actual electric wiring diagrams, electrical circuit diagrams, and detailed sectional drawings of assemblies such as the hydraulic pump, control valve, final drive, and swing machinery.
• Shop data and tooling: Includes component-specific maintenance standards and wear limits, torque tables for common fasteners and hydraulic joints, fuel/coolant/lubricant specifications, component weight tables, electric wire codes, conversion tables, hoisting information, and a dedicated special-tool list with Komatsu part numbers.

Component and System Documentation

The Structure and Function section explains how the machine is built and how the major circuits interact. Coverage runs through the hydraulic pump and its LS/PC control system, CLSS, main control valve, self-reducing pressure valve, PPC valves, EPC and solenoid valves, swing and travel motors, center swivel joint, boom holding valve, breaker filtration, work equipment, electrical controls, machine monitor, sensors, and air-conditioning system.

The engine installation differs by machine family. PC200/PC210 models use the S6D102-1, while PC220/PC230 models use the SA6D102-1. Machine-side engine repair content covers items such as the fuel injection pump, water pump, nozzle holder, turbocharger, thermostat, governor motor, cylinder head, oil cooler, and engine/main-pump removal. Komatsu directs full engine details to the separate 102 Series Engine Shop Manual, so this publication should not be mistaken for the complete internal engine overhaul manual.

Testing, Troubleshooting, and Repair Procedures

The diagnostic section goes beyond basic specifications. It covers engine speed and compression checks, valve-clearance and fuel-injection-timing adjustment, hydraulic control-system testing, monitor-panel functions, connector and wiring inspection, controller fault diagnosis, and symptom-based troubleshooting for engine, pump-control, hydraulic, and electronic systems.

The circuit documentation also reflects production changes. STD hydraulic and electrical diagrams are divided around factory serial breaks at PC200 S/N 102229, PC210 S/N 31425, PC220 S/N 53562, and PC230 S/N 10247. Hyper GX PC200 circuit coverage is likewise separated at S/N 102229, helping prevent the wrong schematic from being used on a later build.

Special-tool tables identify factory tooling by number instead of leaving major repair operations generic. Examples include 790-201-1702, a push-tool kit used in PC200 arm/boom bushing work, and 796-900-1200, listed as part of the tooling for boom foot-pin removal.

There are useful repair cautions buried in the procedures as well. During travel-motor work, Komatsu specifically warns that the shaft must be withdrawn straight to avoid damaging the oil seal. The mechatronics section also warns against pulling wiring by the leads or twisting connectors, since connector housings can break; high-pressure washing can force water into connector terminals and lead to electrical shorts.

Specification, Diagram, and Scope Notes

Reference material includes maintenance standards for the swing machinery, swing circle, final drive, undercarriage components, hydraulic pump, control valve, PPC/EPC valves, travel and swing motors, cylinders, and work-equipment dimensions. Standard tightening data separately covers metric bolts and nuts, flared fittings, split-flange bolts, and O-ring boss piping joints and plugs.

The factory pagination intentionally leaves internal pages 20-26 through 20-101 out of the publication; Testing and Adjusting resumes at 20-102. That numbering gap is part of the original manual structure.

Work involving pressurized hydraulics, recoil components, suspended work equipment, or heavy swing and travel assemblies requires the factory pressure-release, blocking, and hoisting precautions to be reviewed before repair work begins.