This comprehensive Komatsu 72-2 75-2 78-1 84-2 Series Diesel Engine Service Shop Manual provides detailed information, electrical and hydraulic diagrams, and actual real photo illustrations and schemes for repair, servicing, technical maintenance and troubleshooting procedures for your Komatsu machine. This manual offers all the information you need to repair your machine, enabling you to find trouble and understand how to repair and maintain your equipment without needing professional service.

The manual covers a wide range of Komatsu models equipped with the following engines:

* **3D72-2 Diesel Engines:** PC05-5, PC05-6, PC05-7, PC07-1
* **3D75-2 Diesel Engines:** PC10-5, PC10-6
* **3D78-1 Diesel Engines:** PC10-7
* **3D84-2 Diesel Engines:** PC25-1, PC30-7
* **3D84N-2 Diesel Engines:** PC15-3, PC20-7, JV40CW·C·CR·W-2
* **4D84-2 Diesel Engines:** PC40-7, PC45-1

The manual includes detailed information on the following areas:

* **General:** Provides an overview of the engine and its components.
* **Basic Engine:** Covers the fundamental aspects of the engine, including its design, operation, and maintenance.
* **Fuel Injection Equipment:** Explains the fuel injection system, including its components, operation, and troubleshooting.
* **Lubricating System:** Details the lubrication system, including its components, operation, and maintenance procedures.
* **Cooling System:** Covers the cooling system, including its components, operation, and maintenance procedures.
* **Air Induction System and Turbocharger:** Explains the air induction system and turbocharger, including their components, operation, and troubleshooting.
* **Electrical System:** Provides information on the electrical system, including its components, operation, and troubleshooting.
* **Disassembly and Assembly:** Offers detailed instructions on disassembling and assembling the engine components.
* **Testing and Adjusting Data:** Includes comprehensive testing and adjusting data for engine components, ensuring optimal performance.

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The Komatsu 72-2, 75-2, 78-1, and 84-2 Series Engine Service Repair Manual is a comprehensive guide designed for technicians and mechanics working on a wide range of Komatsu construction equipment. This manual covers a variety of models, including the PC05-5, PC05-6, PC05-7, PC07-1, PC10-5, PC10-6, PC10-7, PC25-1, PC30-7, PC15-3, PC20-7, JV40CW·C·CR·W-2, PC40-7, and PC45-1. These models represent a diverse range of Komatsu excavators, from the smaller, compact PC05 series to the larger PC45-1 and JV40CW models. This manual is an essential tool for anyone involved in servicing, maintaining, or repairing these machines, providing detailed instructions and technical specifications for all major engine components.

The manual itself is organized in a logical and user-friendly manner, with sections dedicated to specific engine components and systems. It includes detailed diagrams, exploded views, and step-by-step instructions, making it easy to understand even complex repair procedures. The manual also provides valuable troubleshooting information, covering common problems and their solutions. While the focus is on engine-related work, the manual also includes sections on related systems like fuel, cooling, and electrical systems, ensuring a holistic understanding of the machine's operation. By providing accurate and up-to-date information, this manual helps technicians diagnose problems quickly and efficiently, minimize downtime, and ensure safe and effective operation of Komatsu construction equipment.