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| info | |
| 1951 - 1954, Agricultural Crawler tractor |
| Production | |
| Manufacturer: | Allis Chalmers |
| Factory: | Springfield, Illinois, USA |
| Total built: | 3,100 |
| Capacity | |
| Fuel: | 120 gal [454.2 L] |
| Dimensions & Tires | |
| Weight: | 41000 lbs [18597 kg] |
| Front tire: | tracks |
| Rear tire: | tracks |
| HD20 Serial Numbers | |
| Location: | Steering clutch housing or instrument panel |
| Allis Chalmers HD20 Power | |
| Engine (net): | 175 hp [130.5 kW] |
| Drawbar (claimed): | 117 hp [87.2 kW] |
| Drawbar (tested): | 116.7 hp [87.0 kW] |
| Mechanical | |
| Chassis: | crawler |
| Cab: | Open operator station. |
| Battery | |
| Number: | 2 |
| Volts: | 12 |
| info | |
| Bore/Stroke: | 5.00x5.60 inches [127 x 142 mm] |
| Compression: | 18.0:1 |
| Rated RPM: | 1700 |
| Starter volts: | 24 |
| Coolant capacity: | 60 qts [56.8 L] |
| Engine Detail | |
| General Motors, blower diesel, 6-cylinder, liquid-cooled 2-cycle vertical I-head, 660 ci [10.8 L] |
| Transmission | |
| Type: | torque converter |
| Gears: | 2 forward and 1 reverse |
| Dimensions | |
| Weight: | 41000 lbs [18597 kg] |
| Length: | 191 inches [485 cm] |
| Height: | 95 inches [241 cm] |
| Allis Chalmers HD20 Tires | |
| Ag front: | tracks |
| Ag rear: | tracks |