This manual covers the Nuffield Universal Three 3 Tractor, a robust and reliable machine designed for a variety of agricultural tasks. Engineered for durability and performance, the Nuffield Universal Three 3 Tractor has been a trusted workhorse, offering dependable operation for demanding applications. Its straightforward design and solid construction ensure longevity and ease of maintenance, making it a valuable asset for any operator. This comprehensive workshop service repair manual provides detailed instructions and technical specifications essential for maintaining and repairing the Nuffield Universal Three 3 Tractor. It includes in-depth coverage of general information, engine systems for various configurations, ignition, cooling, fuel, clutch, gearbox, steering, axles, wheels, brakes, electrical systems, drawbar, lubrication, and optional equipment. The manual is structured to guide both experienced mechanics and do-it-yourself owners through every service and repair procedure with clear, step-by-step instructions and helpful illustrations.