This comprehensive Komatsu excavator workshop service and repair manual provides detailed information for the PC400-7, PC400LC-7, PC450-7, and PC450LC-7 models. The manual covers a wide range of topics, including general information, structure, function, and maintenance procedures. You'll find detailed instructions for testing and adjusting various systems, as well as comprehensive disassembly and assembly guides. Specific sections are dedicated to the fuel system, cooling system, lubrication system, engine, power train, hydraulics, final drive, swing machinery, wiring and circuit diagrams, and technical specifications. This manual offers a wealth of information to help you maintain and repair your Komatsu excavator efficiently and effectively.

The Komatsu PC400, PC400LC, PC450, and PC450LC excavators are powerful and versatile machines designed for heavy-duty construction, mining, and demolition applications. These models are known for their reliability, durability, and performance, making them popular choices among professionals in various industries. The PC400 and PC450 series share similar features, with the "LC" designation indicating a long-carriage model, providing greater reach and stability for challenging tasks. Both models feature robust, high-capacity engines that deliver impressive power and torque, enabling them to handle demanding workloads with ease. The excavators are equipped with hydraulic systems that provide smooth and precise control over the boom, arm, and bucket, allowing for efficient digging and material handling. Additionally, these models incorporate advanced safety features, including a comprehensive operator safety cabin, emergency shutdown systems, and strategically placed work lights for enhanced visibility and situational awareness. The Komatsu PC400 and PC450 series excavators boast a wide range of configurations and attachments, making them highly adaptable to diverse project requirements. Operators can choose from various bucket sizes and types, rippers, breakers, and other specialized tools to maximize productivity and performance. The robust construction and engineering of these excavators ensure long-term reliability and minimal downtime, contributing to cost-effectiveness and project completion on schedule. These machines are engineered for optimal fuel efficiency, reducing operating costs and minimizing environmental impact. The Komatsu PC400 and PC450 series excavators offer advanced control systems, allowing for precise operation and customization of machine settings for specific applications. These features, combined with the reliable performance and durability that Komatsu is renowned for, make these excavators an indispensable tool for professionals seeking to complete their projects efficiently and safely.