| Production | |
| Manufacturer | Allis Chalmers | 
| Agricultural Crawler tractor | |
| Built in Springfield, Illinois, USA | |
| Total built | 14,524 | 
| Variants | |
| M | standard width | 
| WM | wide | 
| Allis Chalmers M Engines | |
| Allis Chalmers 4.9L 4-cyl gasoline | |
| Allis Chalmers 5.2L 4-cyl gasoline | |
| Fuel tank | 24 gal 90.8 L  | 
| Allis Chalmers M Transmission | |
| 4-speed gear | |
| Allis Chalmers M Power | |
| Drawbar (claimed) | 22 hp 16.4 kW  | 
| Belt (claimed) | 32 hp 23.9 kW  | 
| Drawbar (tested) | 29.65 hp 22.1 kW  | 
| Belt (tested) | 35.43 hp 26.4 kW  | 
| Mechanical | |
| Drive | crawler | 
| Open operator station. | |
| Photos | |
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| Dimensions & Tracks | |
| Weight | 6200 lbs 2812 kg  | 
| 12-inch tracks | |
| M Serial Numbers | |
| Location: | Right side of transmission case | 
| 1932 | 1 | 
| 1933 | 42 | 
| 1934 | 402 | 
| 1935 | 842 | 
| 1936 | 1942 | 
| 1937 | 3842 | 
| 1938 | 7067 | 
| 1939 | 8127 | 
| 1940 | 9540 | 
| 1941 | 11380 | 
| 1942 | 12947 | 
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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| TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999. | |
| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on April 5, 2022 |