This manual covers the JCB 520-40, 524-50, and 527-55 Telescopic Handler models, designed for robust performance in demanding environments. These machines are engineered for reliability and efficiency, offering versatile material handling capabilities. Their construction prioritizes durability and operational excellence, making them a trusted choice for a wide range of industrial and construction applications. The purpose of this Service Repair Workshop Manual is to provide comprehensive guidance for the diagnosis and repair of these JCB telescopic handlers. It includes detailed information on general procedures, care and safety, maintenance schedules, attachments, body and framework, electrical systems, controls, hydraulics, transmissions, brakes, steering, and engine. This resource is intended for dealer technicians and DIY individuals, enabling them to effectively maintain and repair the equipment.