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| info | |
| 1940 - 1950, Agricultural Crawler tractor |
| Production | |
| Manufacturer: | Allis Chalmers |
| Factory: | Springfield, Illinois, USA |
| Total built: | 1,803 |
| Capacity | |
| Fuel: | 31 gal [117.3 L] |
| Dimensions & Tires | |
| Weight: | 14,000 lbs [6350 kg] |
| Front tire: | tracks |
| Rear tire: | tracks |
| HD7W Serial Numbers | |
| Location: | rear of transmission case or plate near instrument panel |
| Allis Chalmers HD7W Power | |
| Drawbar (claimed): | 45 hp [33.6 kW] |
| Belt (claimed): | 60 hp [44.7 kW] |
| Drawbar (tested): | 57.31 hp [42.7 kW] |
| Belt (tested): | 68.68 hp [51.2 kW] |
| Mechanical | |
| Chassis: | crawler |
| Battery | |
| Number: | 2 |
| Volts: | 6 |
| info | |
| Bore/Stroke: | 4.25x5.00 inches [108 x 127 mm] |
| Air cleaner: | oil bath |
| Compression: | 16.0:1 |
| Rated RPM: | 1500 |
| Starter volts: | 12 |
| Coolant capacity: | 23 qts [21.8 L] |
| Engine Detail | |
| General Motors 3-71, blower diesel, 3-cylinder, liquid-cooled 2-cycle vertical I-head, 213 ci [3.5 L] |
| Transmission | |
| Type: | sliding gear |
| Gears: | 4 forward and 1 reverse |
| Dimensions | |
| Weight (operating): | 14,000 lbs [6350 kg] |
| Length: | 128 inches [325 cm] |
| Width: | 81 inches [205 cm] |
| Height: | 69 inches [175 cm] |
| Allis Chalmers HD7W Tires | |
| Ag front: | tracks |
| Ag rear: | tracks |