Allis Chalmers HD7: all source data
All 39 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 | 1,803 |
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Engine| (no label) | General Motors 3.5L 3-cyl diesel |
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| Fuel tank | 31 gal | 117.3 L |
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Transmission| (no label) | 4-speed sliding gear |
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Power| Drawbar (claimed) | 45 hp | 33.6 kW |
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| Belt (claimed) | 60 hp | 44.7 kW |
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| Drawbar (tested) | 57.31 hp | 42.7 kW |
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| Belt (tested) | 68.68 hp | 51.2 kW |
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Mechanical| Drive | crawler |
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| (no label) | Open operator station. |
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Dimensions| Weight | 14000 lbs | 6350 kg |
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| (no label) | 16-inch tracks |
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Engine
Engine detail| (no label) | General Motors 3-71 |
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| (no label) | blower diesel |
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| (no label) | 3-cylinder |
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| (no label) | liquid-cooled 2-cycle vertical I-head |
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| Displacement | 213 ci | 3.5 L |
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| Bore/Stroke | 4.25x5.00 inches | 108 x 127 mm |
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| Air cleaner | oil bath |
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| Compression | 16.0:1 |
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| Rated RPM | 1500 |
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| Starter volts | 12 |
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| Coolant capacity (Coolant) | 23 qts | 21.8 L |
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Engine oil| Oil capacity | 8.5 qts | 8.0 L |
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Transmission
Transmission| Type | sliding gear |
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| Gears | 4 forward and 1 reverse |
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| Oil capacity | 21 qts | 19.9 L |
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Dimensions
Tracks| Width | 16 inches | 40 cm |
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| Length on ground | 67 inches | 170 cm |
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| Area on ground | 2144 in² | 1.4 m² |
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| Ground pressure | 5.83 psi | 0.4 bar |
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Dimensions| Length | 128 inches | 325 cm |
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| Width | 81 inches | 205 cm |
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| Height | 69 inches | 175 cm |
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| Operating weight | 14000 lbs | 6350 kg |
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| Gauge | 52 inches | 132 cm |
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