This comprehensive service repair manual covers the Liebherr R934C, R944C, and R954C Hydraulic Excavator models. Designed for machines with specific serial number ranges, this manual provides detailed information, including specifications, diagrams, and photographic illustrations. It is an essential resource for understanding the engineering quality and reliability of these robust excavators, intended for demanding construction and industrial applications. The purpose of this manual is to guide owners, mechanics, and technicians through all aspects of machine maintenance and repair. It includes step-by-step instructions for disassembly, assembly, diagnosis, servicing, and troubleshooting. Key areas covered include the engine, hydraulic system, electrical system, drive components, and specialized attachments. The manual's structured format, with indexing and bookmarking, ensures quick access to information, facilitating efficient and accurate upkeep of the equipment.