This manual covers the Liebherr A900C, A904C, A914C, and A924C Litronic EDC Hydraulic Excavator models, specifically for units produced from certain serial numbers onwards. These hydraulic excavators are engineered for demanding construction and industrial applications, representing Liebherr's commitment to robust design, operational efficiency, and long-term reliability. Their advanced Litronic EDC system ensures precise control and optimized performance across a wide range of operational environments. The purpose of this comprehensive service repair factory manual is to provide detailed guidance for the maintenance, servicing, and repair of these Liebherr excavator models. It includes essential information on general procedures, tools, technical data, engine systems, hydraulic components, electrical systems, driveline, steering, braking, and more. This manual serves as an indispensable resource for owners, technicians, and mechanics, enabling them to effectively maintain vehicle integrity and performance throughout its service life.