david brown 990
![]()  | 1961 - 1980
Model year 1961-19651965-19701971-1980
Utility tractor  | 1961 - 1980  | Model year 1961-19651965-19701971-1980  | Utility tractor  | 
|---|---|---|---|---|
1961 - 1980  | ||||
Model year 1961-19651965-19701971-1980  | ||||
Utility tractor  | ||||
1961 - 1980  | |
|---|---|
Model year 1961-19651965-19701971-1980  | |
Utility tractor  | 
Production  | |
|---|---|
Manufacturer  | David Brown  | 
Utility tractor  | |
Built in Meltham Mills, Huddersfield, England  | |
David Brown 990 Engine  | |
|---|---|
David Brown 3.0L 4-cyl diesel  | |
Fuel tank  | 13.74 gal
52.0 L  | 
Engine details ...  | |
David Brown 990 Transmissions  | |
|---|---|
6-speed gear  | |
12-speed partially synchronized  | |
Transmission details ...  | 
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  | 
Performance test details ...  | |
Mechanical  | |
|---|---|
Two-wheel drive  | |
Differential lock  | mechanical rear  | 
Steering  | manual  | 
   | hydrostatic power  (optional)  | 
Differential mechanical expanding shoe brakes  | |
Open operator station.  | |
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 PTO Type  | 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  | 
FAQ: How to read a serial number table.  | |
Electrical  | |
|---|---|
Charging system  | generator  | 
Batteries  | 2  | 
Battery volts  | 6  | 
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