This comprehensive service manual provides detailed instructions for dismantling, inspecting, and assembling JCB axles and gearboxes for the JCB Loadalls, specifically the side-engined models 507-42, 509-42, and 510-55 with serial numbers 1402000 onwards. The manual is structured in a modular fashion, covering each component separately for clarity and ease of use. It focuses on the transmission assemblies, providing detailed procedures for axle hubs, axle hub swivels, driveshafts, axle integral brakes, axle drive heads, manual gearboxes, powershift gearboxes, and transfer gearboxes. Since various axle sizes and types are built using common sub-assemblies, the manual outlines procedures for these sub-assemblies rather than for complete axle assemblies, ensuring that each procedure appears only once. This approach allows for a more streamlined and efficient service process, minimizing redundancy and maximizing clarity.

The JCB Loadall is a versatile telehandler that combines the features of a forklift and a telescopic boom, offering exceptional lifting capacity and reach. The models 507-42, 509-42, and 510-55, all equipped with side-mounted engines, represent powerful and efficient workhorses within the JCB Loadall range. These machines are designed for a wide range of applications, including construction, agriculture, and industrial operations, where their ability to lift, load, and move materials with precision is invaluable. The D-507-42, 509-42, and 510-55 models boast impressive lifting capacities, ranging from approximately 7,000 to 11,000 pounds, and offer a maximum lifting height of up to 55 feet. Their robust construction and advanced hydraulic systems ensure reliable performance and durability even in demanding conditions. The JCB Loadall's side-mounted engine configuration provides excellent visibility and maneuverability, making it ideal for working in confined spaces. These machines are equipped with a range of features designed to enhance operator comfort and safety, including spacious cabs with ergonomic controls, intuitive operating systems, and comprehensive safety systems. The "ON" service repair manual is an essential resource for technicians and operators, providing detailed instructions and specifications for maintaining, repairing, and troubleshooting the transmissions and other key components of these JCB Loadall models. Understanding the intricacies of the transmission system is crucial for ensuring optimal performance and longevity of these valuable machines. This manual offers insights into the design, operation, and potential issues associated with the transmissions, empowering users to diagnose problems, perform necessary repairs, and maintain the equipment in top condition.