This comprehensive Service Repair Manual provides detailed instructions and high-quality diagrams for servicing and repairing the Komatsu PC400-7, PC400LC-7, PC450-7, and PC450LC-7 Hydraulic Excavators. The manual covers a wide range of topics, including general information, structural details, functional explanations, maintenance standards, testing and adjusting procedures, disassembly and assembly instructions, and other essential information. This manual is an invaluable resource for anyone who needs to perform maintenance or repairs on these specific models of Komatsu excavators. The manual covers models with serial numbers starting from 50001 and up for PC400-7 and PC400LC-7 models, and 20001 and up for PC450-7 and PC450LC-7 models. The manual is written in English and can be accessed on all versions of Windows and Mac computers.

The Komatsu PC400-7, PC400LC-7, PC450-7, and PC450LC-7 are heavy-duty hydraulic excavators renowned for their power, reliability, and versatility. These machines are part of Komatsu's 7th generation excavator series, known for their advanced technological features and enhanced performance. The PC400-7 and PC450-7 models represent the standard configuration, while the PC400LC-7 and PC450LC-7 are the long-reach versions, offering extended digging reach for specific applications. These excavators are equipped with powerful Komatsu engines, delivering exceptional digging force and lifting capacity. They feature robust undercarriages for stability and durability, even in demanding terrain. The hydraulic system ensures smooth and precise operation, allowing for efficient work in a variety of applications.

Komatsu PC400-7 and PC450-7 series excavators are widely used in construction, mining, demolition, and other heavy-duty industries. Their versatility makes them suitable for tasks such as excavation, loading, material handling, and demolition. The PC400-7 and PC450-7 offer a spacious and comfortable operator cab, equipped with advanced controls and safety features. The digital display provides real-time machine information, allowing operators to monitor performance and optimize productivity. The excavator's maintenance features, including easy access points and long service intervals, contribute to its long-term reliability and reduced operating costs. The Komatsu PC400-7 and PC450-7 series excavators are an investment in power, performance, and reliability, designed to withstand the most demanding work environments and contribute to successful project completion.