This workshop service repair manual covers the JCB 500 Series, specifically models 505-19, 505-22, 506-36, 506B, 508-40, and 510-40. These machines are engineered for demanding applications, offering robust performance and reliability. The manual provides comprehensive information for maintaining and repairing these versatile pieces of equipment. The purpose of this document is to serve as a complete guide for owners and technicians. It details essential maintenance procedures, troubleshooting techniques, technical specifications, and safety guidelines across various systems including hydraulics, engine, transmission, brakes, and electrical systems. With this manual, users can ensure their JCB equipment operates at peak efficiency and longevity.