This manual covers the Komatsu PC340NLC-7K, a robust excavator designed for demanding construction and earthmoving applications. Featuring a powerful Komatsu SAA6D114E-3 engine with a displacement of 11.04 L and an output of 260 HP, this machine is engineered for efficiency and reliability. Its hydrostatic transmission provides smooth operation and variable travel speeds, while its substantial operating weight of 33,800 kg ensures stability. The PC340NLC-7K adheres to EPA Tier 3 / EU Stage III A emission standards, reflecting a commitment to environmental performance alongside its powerful capabilities. This comprehensive Service Manual and Operating Manual, provided in English, details all essential aspects of the PC340NLC-7K. It includes critical information on maintenance procedures, such as engine oil capacity and change intervals, as well as hydraulic system specifications and filter replacement schedules. Owners, operators, and technicians will find detailed guidance on troubleshooting, technical specifications, and safety protocols. The manual is designed to facilitate proper operation, routine maintenance, and effective repair, ensuring the longevity and optimal performance of your Komatsu equipment.