The Allis Chalmers 8550 is a four-wheel drive tractor manufactured by Allis Chalmers in from 1978 to 1981. The Allis Chalmers 8550 is equipped with a 12.0 L (731.[ cu·in) six-cylinder diesel engine and a partial power shift transmission with 20 forward and 4 reverse gears.
The Allis Chalmers 8550 tractor used the Allis Chalmers 6120T engine. It is a 12.0 L, 11,980 cm2, (731.0 cu·in) six-cylinder turbocharged diesel engine with 133.0 mm (5.24 in) of the cylinder bore and 159.0 mm (6.26 in) of the piston stroke. The compression ratio rating is 16.25:1. This engine produced 304.2 PS (223.7 kW; 300.0 HP) at 2,500 rpm of output power.
The Allis Chalmers 8550 is equipped with hydrostatic power steering, hydraulic wet discs brakes, Acousta Cab II with heat and air-conditioning, and 643.5 liters (170 US gal.; 141.6 Imp. gal) fuel tank.
Allis Chalmers 8550 Specifications
| General Specifications | |
| Model | Allis Chalmers 8550 |
| Length | 7,230 mm (284.6 in) |
| Width | 2,420 mm (95.3 in) With long axle: 3,030 mm (119.5 in) |
| Height | 3,530 mm (139 in) |
| Wheel base | 3,200 mm (126 in) |
| Ground clearance | 430 mm (16.9 in) |
| Weight | 12,265 kg (27,040 lbs) |
| Fuel tank capacity | 643.5 liters (170 US gal.; 141.6 Imp. gal) |
| Battery | Four 12V |
| Cabin type | Acousta Cab II with heat and air-conditioning. |
| Engine | |
| Engine model | Allis Chalmers 6120T |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 6 |
| Fuel type | Diesel |
| Displacement | 12.0 L, 11,980 cm2, (731.0 cu·in) |
| Bore and stroke | 133.0 mm X 159.0 mm (5.24 in X 6.26 in) |
| Compression ratio | 16.25:1 |
| Horsepower | 304.2 PS (223.7 kW; 300 HP) at 2,500 rpm |
| Starter | Electric |
| Oil capacity: |
With 2 filters: 43.5 L (46.0 US. qt, 38.3 Imp. qt.) With 3 filters: 56.8 L (60.0 US. qt, 50.0 Imp. qt.) |
| Coolant capacity: | 68.1 L (72 US. qt, 59.9 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×4 MFWD 4WD |
| Steering type | Hydrostatic power |
| Brakes | Hydraulic wet discs |
| Transmission model | Power Director |
| Transmission type | Partial power shift |
| Gears | 20 forward and 4 reverse |
| Speed | Forward: 30.1 kmh (18.7 mph) Reverse: 18.7 (11.6 mph) |
| Tires | |
| Front tires | Ag: 18.4×38, |
| Rear tires | Ag: 18.4×38 |
| Three-Point Hitch | |
| Caterogy | IV/III |
| Control type | – |
| Lift capacity (at ends) | – |
| PTO (Power take-off shaft) | |
| Rear PTO type | Independent |
| Rear PTO speed | 1,000 rpm |
| Hydraulic system | |
| Hydraulic type | Closed center |
| Valves | 3 or 4 |
| Pump flow | 74.9 gpm (283.5 lpm) |