This manual covers the Cat 305C CR, a robust piece of equipment engineered for demanding work environments. Powered by a turbocharged, liquid-cooled S4Q2-T diesel engine, this compact radius excavator is designed for versatility and efficiency across a range of construction and material handling applications. Its hydrostatic transmission ensures smooth and precise operation, making it a reliable choice for professionals seeking dependable performance. This Workshop Service Repair Manual provides comprehensive guidance for the maintenance, repair, and technical understanding of the Cat 305C CR. It details essential procedures, troubleshooting steps, and technical specifications necessary for ensuring optimal performance and longevity. Owners, mechanics, and technicians will find this manual an invaluable resource for all aspects of vehicle upkeep, facilitating efficient and accurate service to keep the equipment operating at its peak.