Production | |
| Manufacturer: | Allis Chalmers |
| Type: | Standard-tread tractor |
| Factory: | West Allis, Wisconsin, USA |
| Total built: | 2,426 |
Allis Chalmers 25-40 Power | |
| Drawbar (claimed): | 27 hp 20.1 kW |
| Belt (claimed): | 42.6 hp 31.8 kW |
| Drawbar (tested): | 33.82 hp 25.2 kW |
| Belt (tested): | 47.00 hp 35.0 kW |
Mechanical | |
| Chassis: | 4x2 2WD |
| Steering: | manual |
| Cab: | Open operator station. |
| Transmission: | 2-speed gear |
25-40 Serial Numbers | |
| Location: | front of shifter on transmission case |
| 1930: | 24186 |
| 1931: | 24843 |
| 1932: | 24972 |
| 1933: | 25024 |
| 1934: | 25062 |
| 1935: | 25309 |
| 1936: | 25582 |
| Final: | 25611 |
Engine Detail | |
| Allis Chalmers | |
| gasoline | |
| 4-cylinder | |
| liquid-cooled vertical I-head | |
| Displacement: | 510.5 ci 8.4 L |
| Bore/Stroke: | 5.00x6.50 inches 127 x 165 mm |
| Rated RPM: | 1000 |
| Coolant capacity: | 40 qts 37.9 L |
Transmission | |
| Type: | gear |
| Gears: | 2 forward and 1 reverse |
Dimensions | |
| Length: | 152 inches 386 cm |
| Width: | 76 inches 193 cm |
| Height: | 65 inches 165 cm |
| Weight: | 7,000 lbs 3175 kg |