The David Brown 990 Selectamatic is a 2WD or 4WD utility tractor from the Selectamatic series. This tractor was manufactured by David Brown in Meltham Mills, Huddersfield, England from 1971 to 1980. The David Brown 990 Selectamatic is equipped with a 3.2 L (195.0 cu·in) four-cylinder diesel engine and a partially synchronized transmission with 12 forward and 4 reverse gears and dry disc clutch.
The David Brown 990 Selectamatic utility tractor used the David Brown engine. It is a 3.2 L, 3,195 cm2, (195.0 cu·in) four-cylinder natural aspirated diesel engine with 100.0 mm (3.94 in) of the cylinder bore and 102.0 mm (4.02 in) of the piston stroke. The compression ratio rating is 17.0:1. This engine produced 58.9 PS (43.3 kW; 58.0 HP) at 2,200 rpm of output power.
The David Brown 990 Selectamatic is equipped with hydrostatic power steering, hydraulic drum brakes, a weather frame cab (standard), and 67.8 liters (17.9 US gal.; 14.9 Imp. gal) fuel tank.
David Brown 990 Selectamatic Specifications
| General Specifications | |
| Model | David Brown 990 Selectamatic |
| Length | 3,270 mm (128.7 in) |
| Width | 1,700 mm (66.9 in) |
| Height | – |
| Wheel base | 2,080 mm (81.9 in) |
| Ground clearance |
2WD: 530 mm (20.9 in) 4WD: 380 mm (15 in) |
| Weight |
2WD: 2,610 kg (5,754 lbs) 4WD: 3,040 kg (6,702 lbs) |
| Fuel tank capacity | 67.8 liters (17.9 US gal.; 14.9 Imp. gal) |
| Battery | 12V, 96Ah |
| Cabin type | Weather frame cab (standard) |
| Engine | |
| Engine model | David Brown |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 3.2 L, 3,195 cm2, (195.0 cu·in) |
| Bore and stroke | 100.0 mm X 102.0 mm (3.94 in X 4.02 in) |
| Compression ratio | 17.0:1 |
| Horsepower | 58.9 PS (43.3 kW; 58.0 HP) at 2,200 rpm |
| Starter | Electric |
| Oil capacity: | 7.5 L (7.9 US. qt, 6.6 Imp. qt.) |
| Coolant capacity: | 14.0 L (14.8 US. qt, 12.3 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD or 4×4 MFWD 4WD |
| Steering type | Hydrostatic power |
| Brakes | Hydraulic drum |
| Transmission model | – |
| Transmission type | Partially synchronized with dry disc clutch |
| Gears | 12 forward and 4 reverse |
| Transmission oil capacity | 27.0 L (7.1 US. gal, 5.9 Imp. gal.) |
| Tires | |
| Front tires | Ag: 6.00-19 (2WD), 9.5-24 (4WD) |
| Rear tires | Ag: 12.4-36 |
| Three-Point Hitch | |
| Category | II/I |
| Control type | – |
| Lift capacity (at ends) | 907 kg (2,000 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Transmission or live (option) |
| Rear PTO speed | 540/1000 rpm |
| Hydraulic system | |
| Hydraulic type | Open center |
| Pressure | 2000 psi (137.9 bar) |
| Total flow | 7.4 gpm (28 lpm) |
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