David Brown & Company was established in Huddersfield in 1860 as a gear manufacturer, and precision gears remained its foundation for more than a century. The tractor chapter began in 1936 through a partnership with Harry Ferguson that produced the Ferguson-Brown, followed after their split by tractors built entirely under the David Brown name. The gear business supplied industry worldwide and later expanded into drivelines.

Post-war models built the reputation: the VAK1 wartime tractor, the Cropmaster and the 25D, 30D and 50D diesels, later the 770, 870, 970 and 990 Selectamatics and the larger 1200 and 1410 series. David Brown also owned Aston Martin from 1947 to 1972, and its tractor business was ultimately absorbed into the Case organisation. Selectamatic hydraulics brought fingertip implement control to the range.

Workshop manuals in this section cover the diesel engines in full, including CAV fuel injection pump service and timing, clutch and transmission overhaul, hydraulic lift system testing and adjustment, brakes, steering and electrical circuits, supported by wiring diagrams, torque tables and parts references matched to serial ranges. Tyre sizes and axle settings are tabulated where relevant.

Farmers keeping these tractors in work, collectors restoring a Selectamatic and workshops maintaining classic British machinery all rely on these documents. Correct procedures and genuine specifications keep Huddersfield engineering doing the job it was built for. Many examples remain in daily use on small farms.