The David Brown 1390 is a robust tractor, manufactured in England during the late 1970s to early 1980s. Known for its strong engineering and reliability, this model represents a significant advancement in David Brown's agricultural machinery, offering increased power and functionality. Designed for demanding agricultural tasks, the 1390 features a Perkins diesel engine, a manual transmission, and a dual-stage clutch for PTO operation, embodying the brand's legacy of producing dependable farm equipment. This comprehensive workshop service and repair manual provides detailed guidance for maintaining and repairing the David Brown 1390 tractor. It covers a wide array of systems, including the engine, transmission, hydraulics, electrical components, cooling, fuel, braking, and steering systems, along with axles and the PTO. The manual includes periodic maintenance schedules, step-by-step repair and overhaul procedures, troubleshooting guides, diagnostic charts, and critical technical specifications such as torque values and timing procedures, making it an essential resource for professional technicians, mechanics, and owners.