Allis Chalmers S
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| Production | |
| Manufacturer | Allis Chalmers |
| Agricultural Crawler tractor | |
| Built in Springfield, Illinois, USA | |
| Total built | 1,225 |
| Variants | |
| S | gasoline |
| SO | spark-ignition diesel |
| WS | wide |
| Allis Chalmers S Engines | |
| Allis Chalmers 11.1L 4-cyl diesel | |
| Allis Chalmers 11.1L 4-cyl gasoline | |
| Fuel tank | 64 gal 242.2 L |
 Engine details ... | |
| Allis Chalmers S Transmission | |
| 5-speed gear | |
 Transmission details ... |
| Allis Chalmers S Power | |
| Drawbar (claimed) | 48 hp 35.8 kW |
| Belt (claimed) | 66 hp 49.2 kW |
| Drawbar (tested) | 68.9 hp 51.4 kW |
| PTO (tested) | 84.3 hp 62.9 kW |
| Belt (tested) | 74.82 hp 55.8 kW |
 Performance test details ... | |
| Mechanical | |
| Drive | crawler |
| Open operator station. | |
| Photos | |
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 Allis Chalmers S photos... | |
| Dimensions & Tracks | |
| Weight | 20100 lbs 9117 kg |
| 18-inch tracks | |
 Full dimensions and tracks ... | |
| S Serial Numbers | |
| Location: | transmission case or instrument panel |
| 1937 | 3 |
| 1938 | 413 |
| 1939 | 585 |
| 1940 | 1085 |
| 1941 | 1128 |
| 1942 | 1212 |
| Last | 1227 |
FAQ: How to read a serial number table. | |
| References | |
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| Build a Better Farm published in 1940, by Allis Chalmers |
| Page information | |
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| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on April 5, 2022 |