The David Brown 1690 Tractor, produced in the early to mid-1980s, represents a robust and reliable machine designed for heavy-duty agricultural and industrial applications. Building on a heritage of British engineering, this tractor is known for its solid construction and dependable performance, making it a valuable asset for demanding tasks. Its typical configuration features a Perkins 4.248.2 diesel engine, a David Brown Tran-Shift transmission offering 12 forward and 4 reverse gears, and a comprehensive hydraulic system, all contributing to its operational efficiency and versatility in various work environments. This comprehensive Factory Service Repair Manual provides essential information for the service and repair of the David Brown 1690 Tractor. It covers a wide range of topics including detailed engine overhaul, transmission and clutch service, hydraulic system diagnostics, and electrical system troubleshooting with wiring diagrams. The manual also includes scheduled maintenance procedures, fluid specifications, and technical data such as torque values and tolerances. Its purpose is to equip owners, mechanics, and technicians with the in-depth knowledge required for effective maintenance, repair, and troubleshooting, ultimately facilitating cost savings and ensuring the longevity of the vehicle.