| Production | |
| Manufacturer | Allis Chalmers |
| Standard-tread tractor | |
| Built in West Allis, Wisconsin, USA | |
| Total built | 1,426 |
| Allis Chalmers 25-40 Engines | |
| Allis Chalmers 8.4L 4-cyl gasoline | |
| Allis Chalmers 9.2L 4-cyl | |
| Fuel tank | 30 gal 113.6 L |
| Aux. fuel | 1 gal 3.8 L |
| Allis Chalmers 25-40 Power | |
| Drawbar (claimed) | 25 hp 18.6 kW |
| Belt (claimed) | 40 hp 29.8 kW |
| Drawbar (tested) | 33.82 hp 25.2 kW |
| Belt (tested) | 47.00 hp 35.0 kW |
| Mechanical | |
| Two-wheel drive | |
| Manual steering | |
| Open operator station. |
| Dimensions & Tires | |
| Weight | 7000 lbs 3175 kg |
| Front tire | 36x6 |
| Rear tire | 50x12 |
| 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 |
FAQ: How to read a serial number table. | |
| Page information | |
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| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on March 19, 2025 |