This comprehensive manual provides detailed information for maintaining, assembling, disassembling, and servicing your Komatsu PC300LC-5 with KDC 614TA Engine and PC400LC-5 with Cummins LTA-10C Engine Excavators. It is designed to help you achieve peak performance through effective, economical, and safe machine operation and maintenance.

The manual includes two parts: a Service Repair Manual and an Operation & Maintenance Manual. The Service Repair Manual covers a wide range of topics including:

* **General Information:** Provides an overview of the machines, including specifications and important details.
* **Structure and Function:** Explains the design and operation of the various components of the machines.
* **Testing and Adjustment:** Guides you on conducting essential tests and making necessary adjustments to ensure proper functionality.
* **Disassembly and Assembly:** Provides step-by-step instructions for disassembling and reassembling specific components, facilitating repairs.
* **Maintenance Standards:** Outlines the required maintenance procedures and standards for keeping your machines in optimal condition.
* **Metric Conversions:** Includes a helpful conversion guide for metric measurements.


The Operation & Maintenance Manual focuses on the practical aspects of operating and maintaining the machines:

* **Safety Information:** Emphasizes important safety precautions to ensure a safe working environment for operators and maintenance personnel.
* **Introduction and General Information:** Introduces the machines and provides information on identifying serial numbers and relevant locations.
* **Safety Procedures:** Outlines general safety precautions, operating safety, and maintenance safety guidelines.
* **Machine Operation:** Covers detailed information on operating the machines, including transportation, cold weather operation, and long-term storage.
* **Troubleshooting:** Provides guidance on identifying and resolving common issues that may arise during operation.
* **Maintenance Guides:** Offers detailed instructions on routine maintenance procedures, outlines of service, and a list of wear parts.
* **Fuel, Coolant, and Lubricants:** Specifies the proper use of fuel, coolant, and lubricants based on ambient temperature.
* **Tightening Torques:** Provides standard tightening torques for bolts and nuts, ensuring proper assembly and preventing loosening.
* **Safety Critical Parts:** Highlights the importance of and procedures for replacing safety-critical parts at specific intervals.
* **Maintenance Schedule Chart:** Provides a detailed schedule for various maintenance tasks, ensuring timely upkeep.
* **Service Procedures:** Offers step-by-step instructions for performing specific maintenance procedures.
* **Specifications:** Includes comprehensive specifications for both the PC300LC-5 and PC400LC-5 models.
* **Options and Attachments:** Details information on handling optional attachments and operating various accessories like air conditioners and radios.
* **Extending Machine Service Life:** Provides valuable tips and recommendations for maximizing the lifespan of your machines.

This manual is specifically designed for the Komatsu PC300LC-5 with KDC 614TA Engine and PC400LC-5 with Cummins LTA-10C Engine Excavators. It covers machine serial numbers A30001 and up for the PC300LC-5 and A40001 and up for the PC400LC-5.

## Komatsu PC300LC-5 and PC400LC-5 Excavators: Power and Precision in the Construction Industry

The Komatsu PC300LC-5 and PC400LC-5 excavators represent the pinnacle of engineering and performance in the construction industry. These robust machines are renowned for their exceptional power, durability, and fuel efficiency. The PC300LC-5, powered by a Komatsu KDC 614TA engine, boasts impressive digging forces and lifting capacities, making it ideal for a wide range of earthmoving, demolition, and material handling tasks. Its advanced hydraulic system provides smooth and precise control, ensuring efficient operation and operator comfort. Meanwhile, the PC400LC-5, equipped with a Cummins LTA-10C engine, delivers even higher power output and torque, making it suitable for heavier applications like large-scale excavations and rock breaking.

Both models are built with Komatsu's legacy of quality and reliability, incorporating robust components and advanced engineering solutions. The reinforced undercarriage, robust boom and arm, and well-designed hydraulic system ensure optimal performance, longevity, and operator safety. The spacious and ergonomic cab offers excellent visibility and comfort, maximizing operator productivity and reducing fatigue. The PC300LC-5 and PC400LC-5 come equipped with a comprehensive range of features, including advanced monitoring systems, multiple working modes, and optional attachments, allowing operators to customize the machine for specific tasks and maximize efficiency. These features, combined with the renowned Komatsu service and support network, make the PC300LC-5 and PC400LC-5 powerful and reliable assets for construction professionals.