Komatsu PC300LC-6 and PC300HD-6 Hydraulic Excavator Shop Manual (CEBM002901)

CEBM002901 is Komatsu's May 1999 shop manual for the PC300LC-6 and PC300HD-6. These are 30-tonne-plus excavators with twin variable pumps and electronic pump-engine matching, and this book covers both machines in 786 pages.

Fits

PC300LC-6 and PC300HD-6 from serial A83001. Engine: Komatsu SA6D114E-1, 8.27 L six-cylinder, 173 kW at 1,850 rpm. Operating weight is 32,800 kg for the LC and 37,400 kg for the HD.

Quick facts

• Manual Number: CEBM002901
• Models: PC300LC-6, PC300HD-6
• Serial: A83001 and up
• Engine: Komatsu SA6D114E-1, 173 kW
• Operating Weight: 32,800 / 37,400 kg
• Format: PDF, 786 pages

What's in it

It starts with the general specs, weights and dimensions. The structure and function chapter explains the twin variable displacement piston pumps and how the pump and engine control matches hydraulic load to engine output. It also covers the control valve, swing, travel and electrical system. The testing and troubleshooting chapter is the big one, with fault codes, sensor checks and the step-by-step diagnosis for hydraulic and electrical complaints. Disassembly and assembly covers the engine accessories, hydraulics, undercarriage and work equipment. Maintenance standards and circuit diagrams finish it.

The logging version of this machine, the PC300LL-6, has an addendum (CEBM009500) that refers back to this manual.

On a machine this size the electronics and hydraulics are tied together, so a fault code can point to the pump controller, a sensor or the pump itself. The troubleshooting tables are written to sort that out step by step, which is what a field mechanic needs.

Table of contents

• General specs, weights and dimensions
• Structure and function: twin variable displacement piston pumps, pump and engine matching control, control valve, swing and travel, electrical
• Testing, adjusting and troubleshooting with fault codes and sensor checks
• Disassembly and assembly of engine accessories, hydraulics, undercarriage and work equipment
• Maintenance standards, wear limits and circuit diagrams

Before you buy

Check that your serial is A83001 or later and that the machine is an LC or HD model.

PDF, 786 pages, English. Download link straight after checkout. We're an independent seller with no link to Komatsu.