The David Brown 780 is a 2WD utility tractor manufactured by David Brown in Meltham Mills, Huddersfield, England from 1967 to 1971. The David Brown 780 is equipped with a 2.7 L (164.4 cu·in) three-cylinder diesel engine and a sliding gear with dry disc clutch transmission with 12 forward and 4 reverse gears.
The David Brown 780 utility tractor used the David Brown engine. It is a 2.7 L, 2,694 cm2, (164.4 cu·in) three-cylinder natural aspirated diesel engine with 100.0 mm (3.94 in) of the cylinder bore and 114.0 mm (4.49 in) of the piston stroke. The compression ratio rating is 17.0:1. This engine produced 46.6 PS (34.3 kW; 46.0 HP) at 2,000 rpm of output power.
The David Brown 780 is equipped with manual steering, mechanical drum brakes, open operator station, and 36.0 liters (9.5 US gal.; 7.9 Imp. gal) fuel tank.
David Brown 780 Specifications
| General Specifications | |
| Model | David Brown 780 |
| Length | 2,830 mm (111.4 in) |
| Width | 1,620 mm (63.8 in) |
| Height | 2,090 mm (82.3 in) |
| Wheel base | 1,920 mm (75.6 in) |
| Ground clearance | 290 mm (11.4 in) |
| Weight | 1,575 kg (3,472 lbs) |
| Fuel tank capacity | 36.0 liters (9.5 US gal.; 7.9 Imp. gal) |
| Battery | 12V |
| Cabin type | Open operator station |
| Engine | |
| Engine model | David Brown |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 3 |
| Fuel type | Diesel |
| Displacement | 2.7 L, 2,694 cm2, (164.4 cu·in) |
| Bore and stroke | 100.0 mm X 114.0 mm (3.94 in X 4.49 in) |
| Compression ratio | 17.0:1 |
| Horsepower | 46.6 PS (34.3 kW; 46.0 HP) at 2,000 rpm |
| Starter | Electric |
| Oil capacity: | 6.2 L (6.6 US. qt, 5.5 Imp. qt.) |
| Coolant capacity: | 9.5 L (10 US. qt, 8.4 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Manual |
| Brakes | Mechanical drum |
| Transmission model | |
| Transmission type | Sliding gear with dry disc clutch |
| Gears | 12 forward and 4 reverse |
| Transmission oil capacity | 22.7 L (6 US. gal, 5 Imp. gal.) |
| Tires | |
| Front tires | Ag: 6.00-16 |
| Rear tires | Ag: 12.4/11-28 |
| Three-Point Hitch | |
| Caterogy | I |
| Control type | – |
| Lift capacity (at ends) | 1,600 kg (3,530 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Live |
| Rear PTO speed | 540/1,000 rpm |
| Hydraulic system | |
| Hydraulic type | – |
| Pressure | 2000 psi (137.9 bar) |
| Pump flow | 7.4 gpm (28 lpm) |
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