Description

Komatsu PC200, PC200LC, PC210, PC220, PC230 2002 Service Manual

You’ve been burned by a manual that skips the torque values for hydraulic lines. Or one that tells you to “adjust valve clearance” without giving the feeler gauge spec. This 2002 Komatsu PC200, PC200LC, PC210, PC220, PC230 2002 Service Manual runs 1278 pages of factory-printed data that came off the Komatsu press in Japan. It covers the S6D102-1 engine in the PC200/210 and the S6D102E-6 in the PC220/230. No aftermarket guesswork. No scanned reprints missing pages.

1278 Pages of Factory Data

Page count matters when you’re tearing into a final drive or chasing an electrical gremlin. This manual has three major sections: GENERAL (machine specs, fuel and lubricant charts starting page 01-1), STRUCTURE AND FUNCTION (covers everything from the hydraulic pump to the swing motor and the entire CLSS system), and TESTING AND ADJUSTING (page 20-1 onward). Each section is split into sub-sections you can find fast because the bookmark list in the PDF mirrors the printed index.

Fuel specifications are listed in the General section with the exact API service categories and viscosity grades for your climate. If you are working in a San Antonio summer, you need the correct oil weight. It’s right there in the “Fuel, Coolant and Lubricants” table.

Engine and Fuel System Coverage

The engine chapter inside “Structure and Function” walks through the S6D102’s components – cylinder head, piston cooling jets, timing gear train. But the real meat is in Testing and Adjusting. You get a procedure for measuring compression pressure, blow-by pressure, and engine oil pressure. Fuel injection timing adjustment is listed step-by-step with the dial indicator setup. Valve clearance adjustment comes with the cold clearance spec for intake and exhaust. No “use a feeler gauge and tighten until it feels right.”

Torque values for the cylinder head bolts and fuel injection pump mounting are in the “Standard Tightening Torque” table in the Foreword. That table covers bolts from M6 to M24 with grade designations. You will not find a single “tighten securely” anywhere.

Does This Manual Cover the Hydraulics?

Yes, every valve, motor, and line. The “Hydraulic Piping Drawing” and “Hydraulic Circuit Diagram” sections show the exact routing for the PC200 through PC230 models. The Pump section explains the swashplate angle and cutoff settings. The Control Valve section includes the self-reducing pressure valve specs. There is a full breakdown of the CLSS (Closed-center Load Sensing System) with test pressures. The swing motor and travel motor disassembly procedures are in the back, but the Theory of Operation part in “Structure and Function” is what you need before you crack a fitting.

If you need a companion for the undercarriage rebuild, grab the Komatsu PC200 PC200LC Workshop Manual. For parts callouts, the KOMATSU PC200 PC210 Hydraulic Excavator Parts Catalog matches this service manual. And if you are working on a newer model, check the Komatsu PC200 PC220-7 Service Manual.

Torque Specs: Where to Find Them

Open the Foreword. There is a table called “Standard Tightening Torque” that lists bolt diameter, pitch, and torque in foot-pounds (ft·lbf). It covers both coarse and fine thread bolts. This is the same table that Komatsu factory techs use. Hydraulic line fittings have separate torque values in the Hydraulic Piping section downstream. Never reuse a copper washer without checking the spec – the manual tells you the tightening angle for banjo bolts.

Also in the Foreword: the “Conversion Table” for metric to Imperial. You don’t need to guess. Page 00-7 in the revised pages list has the updated conversion chart for 2002 models.

Source Validity: OEM vs Aftermarket

This is a genuine Komatsu shop manual, printed in 2002 and distributed through Komatsu dealers. The PDF file name ends with “35309007218.pdf” – that is the Komatsu part number. Every page carries the copyright and revision list. Aftermarket manuals often omit the “Electrical Circuit Diagram” for specific serial number ranges, like PC220-6 STD serial numbers 96514-102228 and PC230-6 STD 10177-10246. This manual includes those exact diagrams. The troubleshooting charts are model-specific, not generic. You get the “N Mode” communication abnormality troubleshooting (code N-1/E218).

If you want to understand how the hydraulic motor drives the final reduction gears, you might also reference a separate Manual Transmission document, but for the Komatsu powertrain, this manual has the internal diagrams and shim selection tables.

FAQ

Does this manual cover the PC230LC-6?

Yes, it includes PC230-6 STD serial number 10177 and up. The engine specs and electrical diagrams are specific to that model.

What kind of troubleshooting charts are included?

The “Testing and Adjusting” section devotes over 100 pages to troubleshooting. There is a “Judgement Table” where you look up symptom codes, then follow a flow chart that checks sensors, actuator resistance, and controller signals. For example, the “Engine Throttle – Pump Controller (Governor)” fault tree walks you through measuring the EPC solenoid output pressure and checking the governor motor lever stroke. The manual also includes connector pin number tables and mounting locations for all major harness connectors. If the machine displays a code E218 (communications abnormality), the N-1 procedure tells you exactly which wires to check and with what ohm range. This is not a generic list of possible causes – it is a step-by-step elimination process with pass/fail values.

Related Manuals

• Komatsu PC200 PC200LC Workshop Manual”>Komatsu PC200 PC200LC Workshop Manual
• KOMATSU PC200 PC210 Hydraulic Excavator Parts Catalog”>KOMATSU PC200 PC210 Hydraulic Excavator Parts Catalog
• Komatsu PC200 PC220-7 Service Manual”>Komatsu PC200 PC220-7 Service Manual
• Manual Transmission”>Manual Transmission (external reference)

Stop wasting time on third-party manuals that leave out the critical bolt torque for the boom holding valve. Access the Factory Manual and get the exact tolerance tables, hydraulic drift test locations, and the GX controller input/output structure. Your excavator will run better, and you will not be chasing leaks from under-torqued fittings.