This comprehensive workshop service repair manual covers Liebherr Excavator models A900C Litronic, A904C Litronic, A914C Litronic, and A924C Litronic, including their EDC variants. These machines are engineered for demanding operational environments, combining robust construction with advanced hydraulic and electrical systems to deliver exceptional performance and reliability in excavation and construction tasks. Their design prioritizes efficiency and durability, making them a trusted choice for professional use. This manual provides in-depth guidance for the maintenance, repair, and technical understanding of these Liebherr excavators. It details general information, necessary tools, technical data, and maintenance schedules, along with specific sections on the engine, hydraulic system, electrical system, drivetrain components, steering, and braking systems. Furthermore, it covers special attachments, climate control, and undercarriage/uppercarriage elements. This resource is essential for owners, mechanics, and technicians seeking to ensure optimal operation and longevity of their equipment.