This comprehensive service and repair manual covers the Komatsu PC340LC-7K and PC340NLC-7K hydraulic excavators, specifically for serial numbers K40001 and up. Designed for technicians and mechanics, the manual provides detailed instructions and diagrams to guide you through every aspect of maintenance, repair, and troubleshooting. Within the manual, you will find detailed information on engine systems, hydraulic systems, electrical systems, undercarriage components, operator's cab, and more. This includes step-by-step procedures for disassembly, inspection, repair, and reassembly. The manual also includes extensive troubleshooting guides, wiring diagrams, component specifications, and torque values, ensuring you have all the information needed to effectively address any issues that may arise.

The Komatsu PC340LC-7K and PC340NLC-7K hydraulic excavators are robust, high-performance machines designed for demanding construction and earthmoving applications. These models are part of Komatsu's acclaimed 7-series lineup, known for their advanced technology, fuel efficiency, and operator comfort. Powered by a powerful Komatsu SAA6D107E-3 engine, the PC340LC-7K and PC340NLC-7K boast impressive digging forces and lifting capacities, making them ideal for heavy-duty tasks such as excavation, loading, and material handling. The PC340LC-7K is the standard configuration, while the PC340NLC-7K offers a long-reach boom for enhanced versatility and reach in challenging environments. Both models are equipped with Komatsu's proprietary hydraulic system, renowned for its smooth operation, precise control, and efficiency. The hydraulic system incorporates advanced features like the Komatsu hydraulic control system (KHCS), which optimizes hydraulic flow and pressure for improved performance and reduced fuel consumption. The PC340LC-7K and PC340NLC-7K also feature a spacious and comfortable operator cab with ergonomic controls, a large color monitor, and a comprehensive safety system. These features ensure operator comfort, safety, and productivity. The Komatsu PC340LC-7K and PC340NLC-7K are designed to meet the most stringent emission regulations, employing advanced technology to minimize environmental impact. They are known for their reliability, durability, and low operating costs, making them a wise investment for any construction or earthmoving operation.