| Production |
| Manufacturer: | David Brown
|
| Type: | Utility tractor
|
| Factory: | Meltham Mills, Huddersfield, England
|
| David Brown 990 Power |
| Engine: | 52 hp
38.8 kW
|
| Drawbar (claimed): | 43 hp
32.1 kW
|
| PTO (claimed): | 48 hp
35.8 kW
|
| Drawbar (tested): | 43.47 hp
32.4 kW
|
| PTO (tested): | 51.60 hp
38.5 kW
|
| Mechanical |
| Chassis: | 4x2 2WD
|
| Differential lock: | mechanical rear
|
| Steering: | manual
|
| | hydrostatic power (optional)
|
| Brakes: | differential mechanical expanding shoe
|
| Cab: | Open operator station.
|
| Transmissions: | 6-speed gear
|
| | 12-speed partially synchronized
|
| Photos |
| | David Brown 990 photos... |
| Hydraulics |
| Type: | open center
|
| Pressure: | 2000 psi
137.9 bar
|
| Total flow: | 7.4 gpm
28.0 lpm
|
| Tractor hitch |
| Rear Type: | II/I
|
| Power Take-off (PTO) |
| Rear PTO: | transmission
|
| | live (optional)
|
| Clutch: | dry disc
|
| Rear RPM: | 540/1000 (1.375)
|
| Engine RPM: | 540@1800 (Low)
540@1100 (High)
1000@2000
|
| Dimensions & Tires |
| Wheelbase: | 76.75 inches
194 cm
|
| Weight: | 4272 to 4312 pounds
|
| Front tire: | 6.00-16
|
| Rear tire: | 11-32
|
| Full dimensions and tires ... |
| 990 Serial Numbers |
| Location: | Frame, right side
|
| 1961: | 440001
|
| 1962: | 441323
|
| 1963: | 450376
|
| 1964: | 460376
|
| 1965: | 472273
|
| 1966: | 483768
|
| 1967: | 496283
|
| 1968: | 504690
|
| 1969: | 808150
|
| 1970: | 818301
|
| 1971: | 826009
|
| 1972: | 850600
|
| 1973: | 854403
|
| 1974: | 859367
|
| 1975: | 863900
|
| 1976: | 11070001
|
| 1977: | 11080236
|
| 1978: | 11089141
|
| 1979: | 11096828
|
| 1980: | 11104577
|
how to read serial numbers...
|
| Electrical |
| Charging system: | generator
|
| Batteries: | 2
|
| Battery volts: | 6
|
|
