This document is a service manual for Liebherr hydraulic excavators that provides technical specifications and maintenance instructions. It contains sections on general information, tools, technical data, the engine, hydraulic and electrical systems, undercarriage components, and other optional equipment. The manual is intended to assist customer support but does not replace proper training. Symbols are used to indicate hazards, warnings, and important notes. Page numbering and an index structure are used to help locate specific information.