This comprehensive Operation & Maintenance Manual is specifically designed for the Komatsu PC400-5, PC400LC-5, PC400-5 Mighty, PC400LC-5 Mighty, and PC400HD-5 Hydraulic Excavators. It covers models with serial numbers starting from 20603 and up for PC400, 400LC-5, PC400-5 Mighty, and PC400LC-5 Mighty, and from A70501 and up for PC400LC-5. This manual is your complete guide to operating, handling, lubricating, maintaining, checking, and adjusting your Komatsu excavator. It provides detailed instructions to help both operators and maintenance personnel achieve peak performance through efficient, economical, and safe operation and maintenance practices.

The manual is structured to provide a clear and comprehensive understanding of the excavator. It begins with essential safety information followed by an introduction to the machine's intended use, features, and break-in procedures. Detailed sections cover the location of serial number plates, machine components, general operation procedures, transportation guidelines, cold weather operation advice, long-term storage recommendations, and troubleshooting tips.

A major part of the manual focuses on maintenance. It provides guides to routine maintenance, outlines service procedures, and includes a wear parts list. You'll also find information on fuel, coolant, and lubricant usage based on ambient temperature, standard tightening torques for bolts and nuts, a schedule for periodic replacement of safety-critical parts, and a comprehensive maintenance schedule chart.

Beyond the core operation and maintenance procedures, the manual delves into various aspects of the excavator. It covers general precautions for handling attachments, detailed guidance on using buckets with hooks, how to properly use seat belts, and instructions for handling car coolers and air conditioners. A dedicated section provides an overview of different attachments and their operation, ensuring you can utilize your equipment efficiently.

To extend the lifespan of your excavator, the manual includes a section on extending machine service life. For those using the loading shovel attachment, there are dedicated sections covering general locations, instruments and controls, precautions for machine operation, maintenance procedures, transportation guidelines, and specific loading shovel specifications.

The Komatsu PC400-5 series hydraulic excavators represent a pinnacle of heavy construction equipment, renowned for their robust build, powerful performance, and advanced technological features. This series encompasses several models, including the PC400-5, PC400LC-5, PC400-5 Mighty, PC400LC-5 Mighty, and PC400HD-5, each tailored to specific applications. These excavators are designed for heavy-duty digging, loading, and material handling operations in various industries, including mining, quarrying, construction, and demolition. The PC400-5 series utilizes a powerful Komatsu SAA6D140E-5 engine, delivering exceptional power and torque to handle demanding tasks. The hydraulic system is designed for efficiency and precision, offering smooth and responsive operation. Their robust construction, featuring heavy-duty components and reinforced frames, ensures durability and longevity in even the most challenging environments.

The Komatsu PC400-5 series boasts a range of advanced features that enhance operator comfort, safety, and productivity. The spacious and ergonomic cab provides excellent visibility and a comfortable working environment, while the intuitive control system ensures precise operation. The excavators are equipped with sophisticated safety features, including a comprehensive monitoring system and emergency shutdown mechanisms. Additionally, the PC400-5 series incorporates advanced technology, such as Komatsu's integrated operating system (KOMTRAX), which provides real-time performance data, fleet management capabilities, and remote diagnostics. These features contribute to increased efficiency, reduced downtime, and optimized operational costs. The PC400-5 series is a testament to Komatsu's commitment to innovation and excellence in heavy construction equipment, offering a powerful, reliable, and technologically advanced solution for a wide range of demanding applications.