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 dangers, warnings, and important notes. The document structure organizes information into main groups and numbered subgroups for easy reference.