This manual provides comprehensive service and repair information for the Liebherr A 900 C-ZW EDC Litronic Hydraulic Excavator, specifically for serial numbers 31354 and up. Engineered for demanding operational environments, this hydraulic excavator is built with Liebherr's renowned precision and durability. Its robust construction and advanced EDC Litronic system ensure efficient performance and reliability across a wide range of construction and industrial applications. The purpose of this manual is to serve as an authoritative guide for maintaining and repairing the Liebherr A 900 C-ZW EDC Litronic Hydraulic Excavator. It details essential procedures, technical specifications, and troubleshooting steps across various systems, including the hydraulic system, drive motor, transmission, braking system, and electrical components. By following the step-by-step instructions, owners and technicians can effectively perform maintenance, diagnostics, and repairs, ensuring the longevity and optimal functionality of the equipment.