This manual covers the Liebherr A 900 C, A 904 C, A 914 C, and A 924 C Litronic EDC Hydraulic Excavator models, including specific serial number ranges for each. These excavators are engineered for demanding construction and industrial applications, offering robust performance and reliability. The Litronic EDC system enhances operational efficiency and control, making these machines valuable assets for heavy-duty tasks. This comprehensive service repair manual provides detailed, step-by-step instructions for maintenance and repair procedures. It covers all essential systems, including general information, tools, technical data, engine, hydraulic systems, electrical components, drivetrain, steering, braking, and climate control. This resource is designed to assist owners, mechanics, and technicians in effectively maintaining and troubleshooting their Liebherr excavators, ensuring optimal performance and longevity.