The Allis Chalmers HD6 is an agricultural crawler manufactured by Allis Chalmers in Springfield, Illinois, USA from 1955 to 1974. The Allis Chalmers HD6 is equipped with a 5.6 L (344.0 cu·in) four-cylinder diesel engine and one of two transmissions: a sliding gear transmission with 5 forward and 1 reverse gears or a power shift transmission with 2 forward and 2 reverse gears.
The Allis Chalmers HD6 agricultural crawler used the Allis-Chalmers engine. It is a 5.6 L, 5,637 cm2, (344.0 cu·in) four-cylinder natural aspirated diesel engine with 113.0 mm (4.45 in) of the cylinder bore and 141.0 mm (5.55 in) of the piston stroke. The compression ratio rating is 15.0:1.
Vailable variants:
- HD6A – 44-inch gauge
- HD6B – 60-inch gauge
- HD6E – 5-roller
- HD6G loader
- HD6EP with power shift transmission
- HD6AG with turbocharged engine (91.3 PS (67.1 KW; 90 HP) at 1800 rpm)
Allis Chalmers HD6 Specifications
| General Specifications | |
| Model | Allis Chalmers HD6 |
| Length | 3,220 mm (126.8 in) |
| Width | – |
| Height | 1,670 mm (65.7 in) |
| Wheel base | – |
| Weight | 6,080 kg (13,404 lbs) |
| Fuel tank capacity | 140.0 liters (37 US gal.; 30.8 Imp. gal) |
| Battery | Two 12V |
| Cabin type | Open operator station |
| Engine | |
| Engine model | Allis-Chalmers |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 5.6 L, 5,637 cm2, (344.0 cu·in) |
| Bore and stroke | 113.0 mm X 141.0 mm (4.45 in X 5.55 in) |
| Compression ratio |
Natural aspirated: 15.0:1 Turbocharged: 16.25:1 |
| Horsepower | – |
| Starter | Electric |
| Coolant capacity: | 14.2 L (15 US. qt, 12.5 Imp. qt.) |
| Transmission and chassis | |
| Chassis | Crawler |
| Steering type | – |
| Brakes | – |
| Transmission model | |
| Transmission type | Sliding gear |
| Gears | 5 forward and 1 reverse |
| Transmission model | |
| Transmission type | Power shift |
| Gears | 2 forward and 2 reverse |
| Tires | |
| Type | Tracks |