Allis Chalmers HD6
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| Production | |
| Manufacturer | Allis Chalmers |
| Agricultural Crawler tractor | |
| Built in Springfield, Illinois, USA | |
| Variants | |
| HD6A | 44-inch gauge |
| HD6B | 60-inch gauge |
| HD6E | 5-roller |
| HD6G | loader |
| HD6EP | power shift |
| HD6AG | turbocharged |
| Allis Chalmers HD6 Engine | |
| Allis-Chalmers 5.6L 4-cyl diesel | |
| Fuel tank | 40 gal 151.4 L |
 Engine details ... | |
| Allis Chalmers HD6 Transmissions | |
| 5-speed sliding gear | |
| 2-speed power shift | |
 Transmission details ... |
| Allis Chalmers HD6 Power | |
| Engine (net) | 57 hp 42.5 kW |
| Drawbar (claimed) | 45 hp 33.6 kW |
| Belt (claimed) | 55 hp 41.0 kW |
| Drawbar (tested) | 49.95 hp 37.2 kW |
| Belt (tested) | 60.51 hp 45.1 kW |
 Performance test details ... | |
| Mechanical | |
| Drive | crawler |
| Open operator station. | |
| Photos | |
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 Allis Chalmers HD6 photos... | |
| Dimensions & Tracks | |
| Weight | 12400 to 13400 pounds |
| 13-inch tracks | |
 Full dimensions and tracks ... | |
| HD6 Serial Numbers | |
| Location: | Serial number stamped on the rear of steering clutch housing or on the instrument panel. (upper-right) |
| 1955 | 101 |
| 1956 | 1147 |
| 1957 | 6466 |
| 1958 | 7948 |
| 1959 | 10054 |
| 1960 | 12506 |
| 1961 | 13777 |
| 1962 | 14898 |
| 1963 | 16042 |
| 1964 | 17105 |
| 1965 | 18189 |
FAQ: How to read a serial number table. | |
| References | |
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| HD-6 published in 1955, by Allis Chalmers | |
| Engineering-in-Action published in 1956, by Allis Chalmers | |
| Farm Crawlers published in 1962, by Allis Chalmers | |
| Crawler Tractor Farming published by Allis Chalmers | |
| Big Power Farming published in 1965, by Allis Chalmers |
| Page information | |
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| Peter Easterlund - owner/author | |
| This machine's data modified on December 1, 2025 |