JCB Loadall 504 and 526 Service Manual (Reference 9803/3610U-4) provides comprehensive technical documentation for maintenance, repair, and troubleshooting of these telehandler models. This PDF manual includes detailed specifications, diagnostic procedures, component assembly instructions, and service intervals. Essential for technicians, operators, and fleet managers requiring authoritative guidance on equipment operation and upkeep. Covers critical systems including hydraulics, engine, transmission, and safety mechanisms to ensure optimal performance and longevity.