This comprehensive Komatsu PC340LC-7K and PC340NLC-7K Hydraulic Excavator Service Repair Workshop Manual provides in-depth technical information for servicing and repairing these powerful machines. Covering serial numbers K40001 and up, this manual offers detailed, step-by-step instructions and numerous illustrations to guide you through every aspect of maintenance and repair. From engine and hydraulic systems to electrical components and operator's cab, this manual equips you with the knowledge to diagnose, troubleshoot, and resolve a wide range of issues. Whether you are a seasoned mechanic or a dedicated DIY enthusiast, this essential resource empowers you to effectively maintain and repair your Komatsu PC340LC-7K or PC340NLC-7K Hydraulic Excavator to ensure optimal performance and longevity.

The Komatsu PC340LC-7K and PC340NLC-7K are powerful hydraulic excavators designed for demanding construction and earthmoving applications. These machines embody Komatsu's commitment to durability, performance, and operator comfort. The PC340LC-7K is the standard configuration, while the PC340NLC-7K features a longer undercarriage for enhanced stability and reach, making it ideal for working in challenging terrain. Both models boast a robust design, incorporating a powerful Komatsu SAA6D140E-7 engine delivering substantial horsepower and torque for efficient operation. This engine is renowned for its fuel efficiency, minimizing operating costs and environmental impact. The hydraulic system is optimized for smooth and precise control, ensuring optimal performance in all working conditions. The operator cab is spacious and ergonomically designed, with intuitive controls and a comfortable seat that reduces fatigue during long work shifts. The cab offers excellent visibility, allowing the operator to maintain situational awareness and operate safely. Advanced technology plays a significant role in enhancing the efficiency and safety of these excavators. The Komatsu EMMS (Equipment Management and Monitoring System) provides real-time data on machine performance, allowing for proactive maintenance and troubleshooting. The optional Komatsu KOMTRAX system facilitates remote monitoring and fleet management, optimizing productivity and reducing downtime. These excavators are engineered for a long service life, with robust components and a comprehensive maintenance program. The PC340LC-7K and PC340NLC-7K represent the pinnacle of Komatsu's expertise in heavy equipment, offering exceptional performance, reliability, and operator comfort to meet the demands of modern construction projects.