This comprehensive Komatsu PC300-7, PC300LC-7, PC350-7, PC350LC-7 Hydraulic Excavator Service Repair Manual provides in-depth information on maintaining, assembling, disassembling, and servicing your Komatsu machine. Covering models with serial numbers PC300-7 - 40001 and up, PC300LC-7 - 40001 and up, PC350-7 - 20001 and up, and PC350LC-7 - 20001 and up, this manual is an essential resource for anyone working with these specific Komatsu excavators.

The manual includes detailed specifications, diagrams, and real photo illustrations, guiding you through every step of repair, diagnosis, servicing, technical maintenance, and troubleshooting procedures. It offers complete instructions to understand the inner workings of your machine and tackle repairs effectively, saving you time and money. Within its 775 pages, the manual is structured into clear sections:

* **General:** This section provides foundational information and an overview of the excavator.
* **Structure, Function, and Maintenance Standard:** This section delves into the machine's design, operation, and recommended maintenance practices.
* **Testing and Adjusting:** Learn how to perform various tests and adjustments on your excavator for optimal performance.
* **Disassembly and Assembly:** Detailed step-by-step instructions are provided for taking apart and putting back together key components of your Komatsu excavator.
* **Others:** This section covers additional important information that is relevant to the specific model.

This manual is a valuable tool for professional mechanics, equipment operators, and anyone looking to learn more about the inner workings of the Komatsu PC300-7, PC300LC-7, PC350-7, and PC350LC-7 Hydraulic Excavator. Its comprehensive nature makes it an indispensable resource for routine maintenance, troubleshooting, and complex repairs.

The Komatsu PC300-7, PC300LC-7, PC350-7, and PC350LC-7 are high-performance hydraulic excavators designed for demanding construction and earthmoving tasks. These models, part of Komatsu's renowned 7 series, are renowned for their powerful engines, robust construction, and advanced technology. The PC300-7 and PC350-7 are standard configurations, while the PC300LC-7 and PC350LC-7 feature long undercarriages for enhanced stability and reach in challenging terrain. These excavators are equipped with powerful Komatsu SAA4D107E-1 engines, providing ample power for heavy lifting and digging. The hydraulic system delivers smooth, efficient operation, while the robust undercarriage, booms, and arms are built to withstand the toughest conditions.

The Komatsu PC300-7 and PC350-7 series incorporates a suite of advanced features that enhance operator comfort, safety, and productivity. These include a spacious and ergonomic cab with intuitive controls, a sophisticated monitoring system that provides real-time performance data, and an advanced hydraulic system that optimizes fuel efficiency and power delivery. The excavators are also designed with a focus on serviceability, featuring easy-access components for quick and efficient maintenance. These factors contribute to the Komatsu PC300-7 and PC350-7 series' reputation for reliability, longevity, and low operating costs. They are popular choices for a wide range of applications, including road construction, infrastructure projects, quarrying, and mining.