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
ModelDavid Brown 770 Selectamatic
Length2,850 mm (112.2 in)
Width1,620 mm (63.8 in)
Height2,040 mm (80.3 in)
Wheel base1,900 mm (74.8 in)
Weight1,485 kg (3,274 lbs)
Fuel tank capacity43.0 liters (11.4 US gal.; 9.5 Imp. gal)
Battery12V, 96Ah
Cabin typeOpen operator station
Engine modelDavid Brown AD3/49
Engine typeFour-stroke, liquid-cooled, inline
Fuel typeDiesel
Displacement2.4 L, 2,394 cm2, (146.1 cu·in)
Bore and stroke100.0 mm X 102.0 mm (3.94 in X 4.02 in)
Compression ratio17.0:1
Horsepower36.4 PS (26.8 kW; 36.0 HP) at 2,055 rpm
Torque135.6 N·m (13.8 kg·m, 99.9 ft·lb) at 1,400 rpm
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
Chassis4×2 2WD
Steering typeManual
BrakesMechanical drum
Final driveSpur gear
Differential lockMechanical rear
Transmission typeGear type with dry disc clutch
Gears12 forward and 4 reverse
Speed Forward: 23.8 kmh (14.8 mph) Reverse: 12.9 (8 mph)
Transmission oil capacity27.3 L (7.2 US. gal, 6 Imp. gal.)
Front tiresAg: 6.00-16, 5.50-16
Rear tiresAg: 12.4/11-28, 11.2/10-28
Three-Point Hitch
Control typePosition and draft control
Lift capacity (at ends)
PTO (Power take-off shaft)
Rear PTO typeLive
Rear PTO speed540 rpm
Hydraulic system
Hydraulic typeOpen center
Pressure2000 psi (137.9 bar)
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