This service repair workshop manual covers David Brown 770, 870, 970, 1070, 1090, 1170, and 1175 tractor models. These tractors, produced in the United Kingdom from the mid-1960s through the early 1970s, are recognized for their robust construction and reliability in agricultural applications. They feature various David Brown diesel engines, ranging from approximately 30 HP to over 70 HP, and are equipped with David Brown constant mesh gearboxes and the Selectamatic hydraulic transmission system. The manual provides comprehensive information to ensure these dependable machines continue to perform optimally. This extensive manual offers factory-level technical information for all repairs, servicing, and troubleshooting procedures. It covers engine overhaul, fuel and lubrication systems, transmission components, hydraulics, electrical systems, chassis, steering, and operator station. Detailed instructions for routine maintenance, diagnostic troubleshooting, and component repair and reassembly are included, alongside essential technical specifications such as torque values and fluid capacities. This resource is designed to assist David Brown tractor owners, mechanics, agricultural workshops, and restoration specialists in maintaining and repairing their vehicles effectively.