This comprehensive Service Repair Manual provides in-depth information for the Komatsu PC300LC-5 with KDC 614TA Engine and PC400LC-5 with Cummins LTA-10C Engine Excavators. Covering machine model serial numbers A30001 and up for the PC300LC-5 and A40001 and up for the PC400LC-5, this manual is an essential resource for technicians and owners alike.

Featuring detailed specifications, diagrams, and real photo illustrations, the manual guides you through every step of repair, diagnosis, servicing, technical maintenance, and troubleshooting procedures. With clear and concise instructions, you’ll gain a thorough understanding of your machine’s inner workings and confidently perform maintenance and repairs yourself.

The manual is organized into sections covering a wide range of topics including:

* **General:** Provides an overview of the machines and their components.
* **Structure and Function:** Explains the design and operation of the excavators, including their systems and subsystems.
* **Testing and Adjustment:** Covers procedures for testing and adjusting various components and systems.
* **Disassembly and Assembly:** Provides step-by-step instructions for disassembling and reassembling major machine components.
* **Maintenance Standard:** Outlines recommended maintenance schedules and procedures.
* **Other Metric Conversions:** Includes useful conversion tables for various units of measurement.

This complete and detailed manual empowers you to maintain and repair your Komatsu excavators efficiently and effectively.

The Komatsu PC300LC-5 and PC400LC-5 excavators are heavy-duty construction machines known for their powerful performance and reliability. The PC300LC-5 is equipped with a KDC 614TA engine, while the PC400LC-5 utilizes a Cummins LTA-10C engine. Both excavators boast impressive operating weights and hydraulic systems, making them ideal for a wide range of construction projects. The PC300LC-5 features a maximum digging force of 156 kN and a maximum lifting capacity of 10.3 tons, while the PC400LC-5 boasts even greater capabilities with a maximum digging force of 210 kN and a maximum lifting capacity of 13.8 tons. These excavators are designed for demanding applications, including excavation, loading, and material handling.

The PC300LC-5 and PC400LC-5 excavators are known for their operator comfort and safety features. Both models offer spacious and ergonomic cabs with adjustable seats and comprehensive instrumentation. Advanced hydraulic systems ensure smooth and precise control, while multiple safety features, such as boom down and swing limiters, provide added protection for the operator and the surrounding environment. The excavators are equipped with robust undercarriages and durable components, designed to withstand the rigors of demanding construction sites. The serviceability of these machines is also a key feature, with easily accessible components and comprehensive diagnostic tools for efficient maintenance. These excavators are renowned for their exceptional productivity, reliability, and durability, making them sought-after machines in the construction industry.