David Brown 770 Selectamatic

David Brown 770 SelectamaticThe David Brown 770 Selectamatic is a 2WD utility tractor from the Selectamatic series. This tractor was manufactured by David Brown in Meltham Mills, Huddersfield, England from 1965 to 1970. The David Brown 770 is equipped with a 2.4 L (146.1 cu·in) three-cylinder diesel engine and a gear type transmission with 12 forward and 4 reverse gears and dry disc clutch.

The David Brown 770 Selectamatic utility tractor used the David Brown AD3/49 engine. It is a 2.4 L, 2,394 cm2, (146.1 cu·in) three-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 36.4 PS (26.8 kW; 36.0 HP) at 2,055 rpm of output power.

The David Brown 770 Selectamatic is equipped with manual steering, mechanical drum brakes, open operator station and 43.0 liters (11.4 US gal.; 9.5 Imp. gal) fuel tank.

David Brown 770 Selectamatic Specifications

General Specifications
Model David Brown 770 Selectamatic
Length 2,850 mm (112.2 in)
Width 1,620 mm (63.8 in)
Height 2,040 mm (80.3 in)
Wheel base 1,900 mm (74.8 in)
Weight 1,485 kg (3,274 lbs)
Fuel tank capacity 43.0 liters (11.4 US gal.; 9.5 Imp. gal)
Battery 12V, 96Ah
Cabin type Open operator station
Engine model David Brown AD3/49
Engine type Four-stroke, liquid-cooled, inline
Cylinders 3
Fuel type Diesel
Displacement 2.4 L, 2,394 cm2, (146.1 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 36.4 PS (26.8 kW; 36.0 HP) at 2,055 rpm
Torque 135.6 N·m (13.8 kg·m, 99.9 ft·lb) at 1,400 rpm
Starter Electric
Oil capacity: 7.4 L (7.8 US. qt, 6.5 Imp. qt.)
Coolant capacity: 11.4 L (12 US. qt, 10 Imp. qt.)
Transmission and chassis
Chassis 4×2 2WD
Steering type Manual
Brakes Mechanical drum
Final drive Spur gear
Differential lock Mechanical rear
Transmission type Gear type with dry disc clutch
Gears 12 forward and 4 reverse
Speed Forward: 23.8 kmh (14.8 mph) Reverse: 12.9 (8 mph)
Transmission oil capacity 27.3 L (7.2 US. gal, 6 Imp. gal.)
Front tires Ag: 6.00-16, 5.50-16
Rear tires Ag: 12.4/11-28, 11.2/10-28
Three-Point Hitch
Caterogy I
Control type Position and draft control
Lift capacity (at ends)
PTO (Power take-off shaft)
Rear PTO type Live
Rear PTO speed 540 rpm
Hydraulic system
Hydraulic type Open center
Pressure 2000 psi (137.9 bar)
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