This manual covers Liebherr A 934 C Litronic and A 944 C Litronic Hydraulic Excavators, as well as Liebherr A 954 C Litronic Hydraulic Excavators, with specific serial number ranges indicated. These machines are engineered for robust performance in demanding environments, reflecting Liebherr's commitment to quality and reliability. Their advanced Litronic systems offer precise control and efficiency, making them valuable assets for various construction and material handling applications. The purpose of this comprehensive manual is to provide essential information for the operation, maintenance, and repair of these Liebherr excavators. It includes detailed sections on general information, tools, technical data, maintenance guidelines, and specific systems such as the engine, hydraulic system, electrical system, brake system, and undercarriage. By following the procedures and guidelines outlined within, owners, mechanics, and technicians can ensure the optimal performance and longevity of their equipment.