Allis Chalmers HD20: all source data
All 35 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | Allis Chalmers |
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| (no label) | Agricultural Crawler tractor |
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| (no label) | Built in Springfield, Illinois, USA |
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| Total built | 3,100 |
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Engine| (no label) | General Motors 10.8L 6-cyl diesel |
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| Fuel tank | 120 gal | 454.2 L |
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Transmission| (no label) | 2-speed torque converter |
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Power| Engine (net) | 175 hp | 130.5 kW |
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| Drawbar (claimed) | 117 hp | 87.2 kW |
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| Drawbar (tested) | 116.7 hp | 87.0 kW |
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Mechanical| Drive | crawler |
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| (no label) | Open operator station. |
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Dimensions| Weight | 41000 lbs | 18597 kg |
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| (no label) | 24-inch tracks |
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Engine
Engine detail| (no label) | General Motors |
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| (no label) | blower diesel |
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| (no label) | 6-cylinder |
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| (no label) | liquid-cooled 2-cycle vertical I-head |
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| Displacement | 660 ci | 10.8 L |
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| Bore/Stroke | 5.00x5.60 inches | 127 x 142 mm |
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| Power (net) | 175 hp | 130.5 kW |
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| Compression | 18.0:1 |
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| Rated RPM | 1700 |
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| Starter volts | 24 |
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| Coolant capacity (Coolant) | 60 qts | 56.8 L |
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Transmission
Transmission| Type | torque converter |
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| Gears | 2 forward and 1 reverse |
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Dimensions
Tracks| Width | 24 inches | 60 cm |
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| Length on ground | 106.6 inches | 270 cm |
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| Area on ground | 5118 in² | 3.3 m² |
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| Ground pressure | 8.01 psi | 0.6 bar |
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Dimensions| Length | 191 inches | 485 cm |
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| Width | 109.3 inches | 277 cm |
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| Height | 95 inches | 241 cm |
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| Weight | 41000 lbs | 18597 kg |
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