This comprehensive manual provides detailed information for maintaining, assembling, disassembling, and servicing your Komatsu PC400-6, PC400LC-6, PC450-6, and PC450LC-6 hydraulic excavators. It covers a wide range of topics, enabling you to understand the inner workings of your machine and perform repairs efficiently.

The **Service Repair Manual** section includes detailed specifications, diagrams, and real-life photographs to guide you through every step of repair and technical maintenance procedures. This section, with its step-by-step explanations, helps you troubleshoot issues and perform necessary repairs without relying on external service.

The **Operation & Maintenance Manual** section focuses on operating procedures, handling, lubrication, maintenance, inspections, and adjustments. Its purpose is to help operators and maintenance personnel achieve peak performance while ensuring safe and economical operation of the machine.

This manual is a valuable resource for anyone who wants to understand and maintain their Komatsu excavator effectively. You'll find information on:

* **General Information:** Includes an overview of the excavator's structure and function.
* **Testing and Adjusting:** Provides detailed procedures for testing and adjusting various components.
* **Disassembly and Assembly:** Offers step-by-step guidance for disassembling and reassembling key components.
* **Maintenance Standards:** Outlines recommended maintenance practices for optimal performance and longevity.
* **Safety Information:** Emphasizes the importance of safety during operation and maintenance.
* **Operation:** Covers general operation, transportation, cold weather operation, long-term storage, and troubleshooting.
* **Maintenance:** Includes guides to maintenance, service outlines, wear parts lists, lubricant recommendations, standard tightening torques, and a comprehensive maintenance schedule chart.
* **Specifications:** Provides detailed technical specifications for the excavator.
* **Options and Attachments:** Covers handling buckets with hooks, using seat belts, operating the car heater, and information about various attachments.

With its comprehensive coverage and detailed explanations, this manual empowers you to perform repairs and maintain your Komatsu excavator effectively, ensuring optimal performance and extending the machine's lifespan.

The Komatsu PC400-6, PC400LC-6, PC450-6, and PC450LC-6 are powerful hydraulic excavators renowned for their robust construction, high performance, and reliability. Designed for heavy-duty applications in various industries, including construction, mining, and quarrying, these excavators feature a strong and durable chassis, a powerful engine, and a sophisticated hydraulic system. The PC400-6 and PC450-6 models represent the standard configurations, while the PC400LC-6 and PC450LC-6 versions offer long-reach capabilities, ideal for working in confined spaces or reaching distant areas. The machines boast a substantial operating weight, ranging from approximately 40 to 45 metric tons, depending on the specific model and configuration. They are equipped with powerful diesel engines providing ample horsepower for demanding operations.

The hydraulic system is the heart of these excavators, enabling precise and efficient operation of attachments, such as buckets, breakers, and grapples. The Komatsu PC400-6 and PC450-6 series are known for their advanced hydraulic technologies, which optimize power delivery, efficiency, and control. The cabs are designed to provide operators with a comfortable and ergonomically sound work environment, maximizing productivity and minimizing fatigue. Features such as climate control, adjustable seats, and intuitive controls contribute to operator comfort and ease of use. Moreover, the Komatsu PC400-6 and PC450-6 series are equipped with advanced safety features, such as load-sensing hydraulics, overload protection, and comprehensive safety systems, ensuring the well-being of operators and those working around the machines.