This comprehensive Komatsu PC340LC-7K and PC340NLC-7K Hydraulic Excavator Service/Repair/Workshop Manual provides detailed information on maintaining and repairing your equipment. This manual covers all serial numbers K40001 and up. The manual includes detailed instructions on a wide range of topics, including: * **General Information:** Provides an overview of the excavator's design and operation, including safety precautions, specifications, and general maintenance procedures. * **Engine:** Covers the engine's operation, maintenance, and troubleshooting, including information on fuel system, cooling system, lubrication system, and more. * **Hydraulic System:** Detailed information on the excavator's hydraulic system, including components, operation, troubleshooting, and repair procedures. This section covers everything from pumps and motors to valves and cylinders. * **Undercarriage:** Comprehensive coverage of the excavator's undercarriage system, including tracks, sprockets, rollers, and idlers. This section includes maintenance and repair procedures for these components. * **Electrical System:** Detailed information about the excavator's electrical system, including wiring diagrams, components, troubleshooting, and repair procedures. * **Cab and Controls:** This section covers the operator's cab, including information on seat adjustments, controls, and safety features. * **Troubleshooting:** Provides a detailed guide for diagnosing and troubleshooting common problems with the excavator, including hydraulic leaks, engine problems, and electrical issues. * **Disassembly and Assembly:** Detailed instructions on disassembling and reassembling various components of the excavator, including the engine, hydraulic system, and undercarriage. * **Parts Identification:** Provides illustrations and descriptions of all major parts of the excavator, making it easier to identify and order replacement components. * **Specifications:** A comprehensive list of the excavator's specifications, including dimensions, weights, engine specifications, and hydraulic system data. This manual is an essential tool for anyone who works on Komatsu PC340LC-7K and PC340NLC-7K Hydraulic Excavators. It will help you to keep your equipment running smoothly and efficiently.

The Komatsu PC340LC-7K and PC340NLC-7K hydraulic excavators are heavy-duty construction machines renowned for their power, efficiency, and versatility. These excavators are designed for a wide range of applications, including earthmoving, demolition, material handling, and infrastructure projects. The PC340LC-7K and PC340NLC-7K models are equipped with a powerful Komatsu SAA6D107E-3 engine, delivering robust performance and fuel efficiency. The engine is paired with a sophisticated hydraulic system that provides precise control and smooth operation even under demanding conditions. The excavators feature a robust undercarriage with durable tracks, ensuring optimal stability and traction on various terrains. Both models incorporate advanced technologies to enhance operator comfort and safety, including a spacious and ergonomically designed cab with a comprehensive instrumentation panel and intuitive controls. The PC340LC-7K and PC340NLC-7K excavators differ primarily in their boom configurations. The PC340LC-7K model features a standard boom, ideal for general excavating and material handling tasks. Conversely, the PC340NLC-7K is equipped with a long reach boom, making it suitable for demolition and other applications requiring extended reach. Both models are designed with a focus on serviceability, featuring easily accessible components for routine maintenance and repairs. These excavators come equipped with Komatsu's advanced monitoring system, providing operators with real-time data on machine performance and potential issues. The Komatsu PC340LC-7K and PC340NLC-7K hydraulic excavators are a testament to Komatsu's commitment to innovation and quality, offering exceptional performance, durability, and operator comfort for a wide range of demanding construction applications.