The 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 | |
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.) |
Tires | |
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) |