This service repair workshop manual covers JCB 506C, 506(HL), and 508C models. These machines are engineered for demanding operational environments, offering robust performance and reliability. While specific production years are not indicated, this manual applies to serial number ranges starting from 579781 for the 506C and 579569 for the 506(HL) and 508C. The manual provides comprehensive information to ensure these versatile machines operate at peak efficiency. The purpose of this English-language manual is to provide detailed guidance for the maintenance, repair, and technical understanding of the JCB 506C, 506(HL), and 508C. It covers essential areas including general information, care and safety, routine maintenance, attachments, body framework, electrics, controls, hydraulics, transmissions, brakes, steering, and engine systems. With easy-to-read text and high-quality diagrams, this manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain and service their equipment effectively.