David Brown
David Brown 850
The David Brown 850 is a utility tractor produced from 1960 to 1965. It was built in Meltham Mills, Huddersfield, England. The tractor features a 2.5L 4-cylinder engine available in diesel or gasoline versions, producing 35 hp. It has a 6-speed unsynchronized transmission with 2 reverse gears, two-wheel drive, and mechanical expanding shoe brakes. The tractor offers a rear PTO with optional live PTO and a dry disc clutch. Dimensions include a 75.25 inch wheelbase and a weight ranging from 3750 to 4179 pounds depending on configuration.
Power35 hp
Founded1960 - 1965
Model850
Technical Specifications
Detailed specifications and technical data for David Brown 850
Power
| Engine power | 35 hp (26.1 kW) |
|---|---|
| PTO (tested) | 33.56 hp (25.0 kW) |
| PTO (claimed) | 33 hp (24.6 kW) |
| Drawbar (tested) | 30.93 hp (23.1 kW) |
| Drawbar (claimed) | 30 hp (22.4 kW) |
Engine
| Power | 35 hp (26.1 kW) |
|---|---|
| Idle RPM | 700-2000 |
| Rated RPM | 2000 |
| Air cleaner | oil bath |
| Bore/Stroke | 3.50x4.00 inches (89 x 102 mm) |
| Compression | 17:1 |
| Fuel system | direct injection |
| Displacement | 154 ci (2.5 L) |
| Oil capacity | 10.1 qts (9.6 L) |
| Diesel engine | David Brown, diesel, 4-cylinder, liquid-cooled |
| Starter volts | 12 |
| Engine options | David Brown 2.5L 4-cyl diesel, David Brown 2.5L 4-cyl gasoline |
| Gasoline engine | David Brown, gasoline, 4-cylinder, liquid-cooled |
| Coolant capacity | 14.4 qts (13.6 L) |
| Gasoline engine Rated RPM | 2000 |
| Gasoline engine Air cleaner | oil bath |
| Gasoline engine Bore/Stroke | 3.50x4.00 inches (89 x 102 mm) |
| Gasoline engine Compression | 6.25:1 |
| Gasoline engine displacement | 154 ci (2.5 L) |
| Gasoline engine Starter volts | 12 |
Weight
| Shipping | 3750 lbs (1701 kg) |
|---|---|
| Ballasted | 5874 lbs (2664 kg) |
| Gas Operating | 4094 lbs (1857 kg) |
| Diesel Operating | 4179 lbs (1895 kg) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Brakes | Differential mechanical expanding shoe brakes |
| Steering | Manual steering |
| Final drives | spur gear |
| Operator station | Open operator station |
Production
| Type | Utility tractor |
|---|---|
| Built in | Meltham Mills, Huddersfield, England |
| Years produced | 1960 - 1965 |
Transmission
| Type | unsynchronized gear |
|---|---|
| Gears | 6 forward and 2 reverse |
| Clutch | dry disc |
| Gear arrangement | Three gears (1-3) plus reverse (R) in two ranges (low and high) |
Tractor hitch
| Rear Type | I |
|---|
Dimensions & Tires
| Length | 113.5 inches (288 cm) |
|---|---|
| Rear tire | 10-28 |
| Wheelbase | 75.25 inches (191 cm) |
| Front tire | 5.00-15 |
| Rear tread | 52/56/60/64/68/72 inches (132/142/152/162/172/182 cm) |
| Front tread | 52/56/60/64/68/72 inches (132/142/152/162/172/182 cm) |
| Height (hood) | 51.75 inches (131 cm) |
Power Take-off (PTO)
| Clutch | dry disc |
|---|---|
| Live PTO | Optional |
| Rear PTO | transmission |
| Engine RPM | 540@1800, 540@1100, 1000@2000 |
| Rear PTO Type | 540/1000 (1.375) |
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