The Oliver 550 is a 2WD utility tractor manufactured by Oliver in Charles City, Iowa, USA from 1958 to 1975.
The Oliver 550 is equipped with one of two engines: a 2.5 L (155.0 cu·in) four-cylinder gasoline engine or a 2.5 L (155.0 cu·in) four-cylinder diesel engine and a gear-type transmission with 6 forward and 2 reverse gears and dry disc clutch.
This utility tractor used power assist steering, differential mechanical dry disc brakes, an open operator station, and 49.2 liters (13 US gal.; 10.8 Imp. gal) fuel tank.
The tractor could be equipped with the following engines:
- Oliver. It is a 2.5 L, 2,540 cm2, (155.0 cu·in) four-cylinder natural aspirated gasoline engine with 92.0 mm (3.62 in) of the cylinder bore and 95.0 mm (3.74 in) of the piston stroke. The compression ratio rating is 7.75:1. This engine produced 42 PS (30.9 kW; 41.4 HP) at 2,000 rpm of PTO output power.
- Oliver. It is a 2.5 L, 2,540 cm2, (155.0 cu·in) four-cylinder natural aspirated diesel engine. The cylinder bore is 92.0 mm (3.62 in) and the piston stroke is 95.0 mm (3.74 in). The compression ratio rating is 16.0:1. This engine produced 42 PS (30.9 kW; 41.4 HP) at 2,000 rpm of PTO output power.
Oliver 550 Specifications
| General Specifications | |
| Model | Oliver 550 |
| Length | – |
| Width | – |
| Height | – |
| Wheel base | 1,860 mm (73.2 in) |
| Weight (operating) | 1,690 kg (3,726 lbs) |
| Fuel tank capacity | 49.2 liters (13 US gal.; 10.8 Imp. gal) |
| Battery | Two 6V (Diesel), One 12V (gasoline) |
| Cabin type | Open operator station |
| Engine | |
| Engine model | Oliver |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Gasoline |
| Displacement | 2.5 L, 2,540 cm2, (155.0 cu·in) |
| Bore and stroke | 92.0 mm X 95.0 mm (3.62 in X 3.74 in) |
| Compression ratio | 7.75:1 |
| Horsepower | 42 PS (30.9 kW; 41.4 HP) at 2,000 rpm |
| Starter | Electric |
| Engine | |
| Engine model | Oliver |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 2.5 L, 2,540 cm2, (155.0 cu·in) |
| Bore and stroke | 92.0 mm X 95.0 mm (3.62 in X 3.74 in) |
| Compression ratio | 16.0:1 |
| Horsepower | 42 PS (30.9 kW; 41.4 HP) at 2,000 rpm |
| Starter | Electric |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Power assist |
| Brakes | Differential mechanical dry disc |
| Transmission model | – |
| Transmission type | Gear type with dry disc clutch |
| Gears | 6 forward and 2 reverse |
| Speed | Forward: 23.9 kmh (14.9 mph) Reverse: 6.6 kmh (4.1 mph) |
| Transmission oil capacity | 18.9 L (5 US. gal, 4.2 Imp. gal.) |
| Tires | |
| Front tires | Ag: 6.00-16 |
| Rear tires | Ag: 12-26 |
| Three-Point Hitch | |
| Category | I |
| Control type | – |
| Lift capacity (at ends) | – |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent |
| Rear PTO speed | 540/1000 rpm |
| Hydraulic system | |
| Hydraulic type | Open center |
| Hydraulic capacity | 9.5 L (2.5 US. gal, 2.1 Imp. gal.) |
| Pump flow | 5.25 gpm (19.9 lpm) |
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