Komatsu PC4000E-6 Workshop Manual

You have a Komatsu PC4000E-6 in the shop? Good. Now get rid of the aftermarket paper. This Workshop Manual is the OEM file from Komatsu Mining Germany GmbH. 832 pages. Serial number 08165 and up. It covers the Fuel system, the hydraulic circuits, the electronic pump regulation – everything the factory built into that machine. I don’t trust aftermarket documentation on principle. This is the real thing.

Komatsu PC4000E-6 Workshop Manual: What the 832 Pages Cover

The manual breaks down into 10 major sections. Section 01 gives you the machine specification – weight, dimensions, hydraulic pressures. Section 10, Structure and Function, is the meat: main assembly groups, the drive system, the hydraulic oil reservoir, the cooling system, and the controlling section with all the electronic adjustments. You get the full hydraulic schematics for the attachment cylinders, the swing gears, and the undercarriage. Every component is labeled with Komatsu part numbers.

Fuel System Information in the Structure and Function Chapter

Chapter 1.1.4 is dedicated to the Fuel Tank. The manual shows the location, the capacity, and the routing of fuel lines. It also integrates the fuel system with the hydraulic oil reservoir and the engine prime drive. If you need to drain or service the fuel tank, the procedure is laid out with the required tools and safety precautions. No guesswork – the factory tells you exactly what to do.

Does This Manual Cover the Electronic Pump Regulation System?

Yes. Section 7 goes into the main hydraulic pumps and the pump regulation system. Subsection 7.2 covers the Electronic Pump Regulation System, including the Electronic Power Module (EPM), the Electronic Signal Rectifier (ESR), and the Microcontroller MC7. You get the checks and adjustments for the MC7, the load limiting control, and the energy efficiency functions. This is critical for diagnosing pump response issues. Without this section, you are flying blind.

Safety Section: How Komatsu Handles Warnings and Environment Protection

The manual opens with a Foreword that includes Safety and Environment Protection. Throughout the chapters, specific warnings are highlighted for high-pressure hydraulic, electrical, and moving parts. The manual also includes a safe operation procedure for the attachment changeover and the boom raising sequence. The factory does not assume you know the dangers – they spell them out.

Specification PC4000: Check Your Machine’s Serial Number

Section 01 lists the specification for the PC4000 model. You need to verify that your machine serial number falls within 08165 and up. The manual is built for that range. If you have an older machine, the specs may differ. The specification table includes the engine model, pump flow rates, and system pressures.

Frequently Asked Questions

Does this manual cover both the Backhoe Attachment (BHA) and Front Shovel Attachment (FSA)?

Yes, Section 1.3 details both attachment types.

What is the publication year of this manual?

The copyright is 2009 by Komatsu Mining Germany GmbH.

Is the manual suitable for a beginner mechanic?

This is a factory workshop manual intended for trained technicians. It assumes you understand hydraulic and electrical systems. If you are new to heavy equipment, you should pair it with the operation and maintenance manual. The manual includes safety warnings and step-by-step procedures, but it does not teach basic theory. Expect detailed schematics, torque specs, and adjustment procedures. You will need to follow the instructions exactly and have the proper tools. Beginners should proceed with caution.

What safety information is included?

The manual opens with a Foreword section that includes Safety and Environment Protection. Throughout the chapters, specific warnings are highlighted for high-pressure hydraulic, electrical, and moving parts. Page references are given for critical procedures.

For other Komatsu models, check out the Komatsu WA65-5 WA70-5 WA80-5 2005 Workshop Manual, Komatsu WH609-1E0 WH613-1E0 WH713-1E0 WH714H-1E0 WH716-1E0 Workshop Manual, and Komatsu PW95R-2 Workshop Manual – 520 Pages of Factory Specs. For a general understanding of mechanical transmissions, see Manual Transmission and Manual Transmission on Wikipedia.

Stop guessing with aftermarket copies. Download the Factory Manual now and get the real specs.