This comprehensive manual provides detailed information for maintaining, assembling, disassembling, and servicing your Komatsu PC340LC-7K and PC340NLC-7K hydraulic excavators. It's designed to help you achieve peak performance through effective, economical, and safe machine operation and maintenance.

The manual is divided into two sections: the Service Repair Manual and the Operation & Maintenance Manual. The Service Repair Manual contains specifications, diagrams, real-life photos, and illustrations that guide you through step-by-step repair, servicing, technical maintenance, and troubleshooting procedures. You'll find in-depth information to help you identify and repair problems without needing to contact a service center.

The Operation & Maintenance Manual covers procedures for operating, handling, lubricating, maintaining, checking, and adjusting your excavator. It's an invaluable resource for both operators and maintenance personnel, providing guidance for achieving peak performance through effective, economical, and safe machine operation and maintenance.

The manual covers machines with serial numbers K40001 and up, and the Komatsu PC340LC/NLC-7K models are equipped with the SAA6D114E engine. For detailed engine information, refer to the separate 114 Series Engine Shop Manual.

**Service Repair Manual Contents:**

* General
* Structure, Function, and Maintenance Standards
* Testing and Adjusting
* Disassembly and Assembly
* Others

**Operation & Maintenance Manual Contents:**

* Foreword
* Safety
* Operation
* Maintenance
* Specifications
* Attachments and Options
* Index

The Komatsu PC340LC-7K and PC340NLC-7K are powerful and versatile hydraulic excavators designed for demanding construction, mining, and material handling applications. The PC340LC-7K is the standard configuration, while the PC340NLC-7K boasts a long undercarriage, offering increased stability and reach for challenging projects. Both models feature a robust and durable construction, incorporating advanced technology and innovative design elements to enhance performance, efficiency, and operator comfort.

Equipped with a powerful Komatsu SAA6D107E-3 engine, the PC340LC-7K and PC340NLC-7K deliver exceptional power and torque for demanding tasks, while their advanced hydraulic system ensures smooth and precise operation. The excavators feature a spacious and ergonomically designed cab, providing operators with optimal visibility, comfort, and control. The intuitive control layout, combined with advanced electronic monitoring systems, contributes to increased productivity and safety. Komatsu's commitment to environmental sustainability is reflected in the excavators' fuel-efficient engines and low emission levels, meeting stringent global environmental regulations. The PC340LC-7K and PC340NLC-7K are further equipped with features like Komatsu's EMMS (Equipment Management Monitoring System) for real-time monitoring of machine performance, allowing for preventative maintenance and maximizing operational uptime. The robust construction, combined with advanced features, ensures these excavators deliver exceptional reliability and durability, making them ideal for a wide range of demanding applications.