David Brown 850 utility tractor: review and specs

The David Brown 850 is a 2WD utility tractor manufactured by David Brown in Meltham Mills, Huddersfield, England from 1960 to 1965.

The David Brown 850 is equipped with one of two engines: a 2.5 L (154.0 cu·in) four-cylinder diesel engine or a 2.5 L (154.0 cu·in) four-cylinder gasoline engine and unsynchronized gear transmission with 6 forward and 2 reverse gears abd dry disc clutch.

The tractor could be equipped with the following engines:

David Brown. It is a 2.5 L, 2,524 cm², (154.0 cu·in) four-cylinder natural aspirated diesel engine with 89.0 mm (3.5 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 35.5 PS (26.1 kW; 35 HP) at 2,000 rpm of output power.
David Brown. It is a 2.5 L, 2,524 cm², (154.0 cu·in) four-cylinder natural aspirated gasoline engine. The cylinder bore is 89.0 mm (3.5 in) and the piston stroke is 102.0 mm (4.02 in). The compression ratio rating is 6.25:1. This engine produced 35.5 PS (26.1 kW; 35 HP) at 2,000 rpm of output power.

The David Brown 850 is equipped with manual steering, differential mechanical expanding shoe brakes, open operator station, and 40.0 liters (10.6 US gal.; 8.8 Imp. gal) fuel tank.

David Brown 850 Specifications

General Specifications
Model	David Brown 850
Length	2,880 mm (113.4 in)
Width	–
Height (hood)	1,310 mm (51.6 in)
Wheel base	1,910 mm (75.2 in)
Weight (operating)	Gas: 1,860 kg (4,101 lbs) Diesel: 1,895 kg (4,178 lbs)
Fuel tank capacity	40.0 liters (10.6 US gal.; 8.8 Imp. gal)
Battery	Gas: 12V; Diesel: 2x6V
Cabin type	Open operator station
Engine
Engine model	David Brown
Engine type	Four-stroke, liquid-cooled, inline
Cylinders	4
Fuel type	Diesel
Displacement	2.5 L, 2,524 cm², (154.0 cu·in)
Bore and stroke	89.0 mm X 102.0 mm (3.5 in X 4.02 in)
Compression ratio	17.0:1
Horsepower	35.5 PS (26.1 kW; 35 HP) at 2,000 rpm
Starter	Electric
Oil capacity:	9.6 L (10.1 US. qt, 8.4 Imp. qt.)
Coolant capacity:	13.6 L (14.4 US. qt, 12 Imp. qt.)
Engine
Engine model	David Brown
Engine type	Four-stroke, liquid-cooled, inline
Cylinders	4
Fuel type	Gasoline
Displacement	2.5 L, 2,524 cm², (154.0 cu·in)
Bore and stroke	89.0 mm X 102.0 mm (3.5 in X 4.02 in)
Compression ratio	6.25:1
Horsepower	35.5 PS (26.1 kW; 35 HP) at 2,000 rpm
Starter	Electric

Transmission and chassis
Chassis	4×2 2WD
Steering type	Manual
Brakes	Differential mechanical expanding shoe
Final drive	Spur gear
Transmission model
Transmission type	Unsynchronized gear with dry disc clutch
Gears	6 forward and 2 reverse
Speed	Forward: 22.8 kmh (14.2 mph) Reverse: 12.4 (7.7 mph)
Tires
Front tires	Ag: 5.00-15
Rear tires	Ag: 10-28

PTO (Power take-off shaft)
Rear PTO type	Transmission or live (option)
Rear PTO speed	540/1,000 rpm

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