Allis Chalmers HD7
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| Production | |
| Manufacturer | Allis Chalmers |
| Agricultural Crawler tractor | |
| Built in Springfield, Illinois, USA | |
| Total built | 1,803 |
| Allis Chalmers HD7 Engine | |
| General Motors 3.5L 3-cyl diesel | |
| Fuel tank | 31 gal 117.3 L |
 Engine details ... | |
| Allis Chalmers HD7 Transmission | |
| 4-speed sliding gear | |
 Transmission details ... |
| Allis Chalmers HD7 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 |
 Performance test details ... | |
| Mechanical | |
| Drive | crawler |
| Open operator station. | |
| Photos | |
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 Allis Chalmers HD7 photos... | |
| Dimensions & Tracks | |
| Weight | 14000 lbs 6350 kg |
| 16-inch tracks | |
 Full dimensions and tracks ... | |
| HD7 Serial Numbers | |
| Location: | Serial number stamped on the right-rear of the transmission case or on a plate near the instrument panel. |
| 1940 | 3 |
| 1941 | 503 |
| 1942 | 1137 |
| 1943 | 5403 |
| 1944 | 5753 |
| 1945 | 8949 |
| 1946 | 12091 |
| 1947 | 13078 |
| 1948 | 15122 |
| 1949 | 16752 |
| 1950 | 18086 |
FAQ: How to read a serial number table. | |
| References | |
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| HD-7 2-Cycle Diesel published in 1949, by Allis Chalmers | |
| Operators Manual Model HD 7 Tractor (T-203E) | |
| 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 11, 2022 |