Allis Chalmers CA: all source data
All 69 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) | Row-Crop tractor |
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| (no label) | Built in West Allis, Wisconsin, USA |
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| Total built | 39,499 |
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| (no label) | Original price was $1,900 in 1958 |
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| (no label) | The live PTO on the CA was due to a hand clutch that "broke" the rear axle, causing the differential to spin freely. |
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Engine| (no label) | Allis Chalmers 2.1L 4-cyl gasoline |
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Transmission| (no label) | 4-speed non-synchronized |
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Power| Drawbar (claimed) | 18 hp | 13.4 kW |
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| PTO (claimed) | 23 hp | 17.2 kW |
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| Drawbar (tested) | 22.97 hp | 17.1 kW |
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| Belt (tested) | 25.96 hp | 19.4 kW |
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Mechanical| (no label) | Two-wheel drive |
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| (no label) | Manual steering |
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| (no label) | Differential mechanical contracting band brakes |
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| (no label) | Open operator station |
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Capacity| Fuel | 13 gal | 49.2 L |
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| Hydraulic system | 2 gal | 7.6 L |
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Hydraulics| Capacity | 2 gal | 7.6 L |
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| Pressure | 3200 psi | 220.6 bar |
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Hitch| Type | Allis Snap Coupler |
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Pto| Rear PTO | live |
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| Rear PTO Type | 538 |
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Dimensions| Wheelbase | 82 inches | 208 cm |
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| Weight | 2835 lbs | 1285 kg |
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| Front tire | 5.00-15 |
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| Rear tire | 10-24 |
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Belt pulley| Diameter | 8 inches | 20 cm |
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| Width | 5.5 inches | 13 cm |
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| RPM | 1220 |
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| Speed | 2555 ft/min | 778.76 meters/min |
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Electrical| Ground | positive |
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| Charging system | generator |
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| Charging amps | 10 |
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| Battery volts | 6 |
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| Battery AH | 95 |
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Engine
Engine detail| (no label) | Allis Chalmers |
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| (no label) | gasoline |
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| (no label) | 4-cylinder 8-valve |
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| (no label) | liquid-cooled vertical I-head |
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| Displacement | 125.2 ci | 2.1 L |
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| Bore/Stroke | 3.375x3.50 inches | 86 x 89 mm |
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| Air cleaner | oil bath |
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| Compression | 6.25:1 |
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| Rated RPM | 1650 |
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| Firing order | 1-2-4-3 |
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| Starter volts | 6 |
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| Coolant capacity (Coolant) | 9 qts | 8.5 L |
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| Sparkplug | AC45 |
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| Sparkplug | Autolite A-7 |
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| Sparkplug | Autolite A-9 |
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| Sparkplug | Champion J-8 |
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| Sparkplug gap | 0.030 inches | 0.762 mm |
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| Point gap | 0.020 inches | 0.508 mm |
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| Intake valve clearance | 0.012 inches (hot) | 0.305 mm |
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| Exhaust valve clearance | 0.012 inches (hot) | 0.305 mm |
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Transmission
Transmission| Type | non-synchronized |
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| Gears | 4 forward and 1 reverse |
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| Clutch | dry disc |
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| Oil capacity | 4 qts | 3.8 L |
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Dimensions
Tires| Ag front | 5.00-15 |
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| Ag rear | 10-24 |
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Dimensions| Wheelbase | 82 inches | 208 cm |
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| Length | 125 inches | 317 cm |
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| Height | 73 inches | 185 cm |
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| Operating weight | 2835 lbs | 1285 kg |
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| Ballasted weight | 5045 lbs | 2288 kg |
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| Front tread | 6.25/13 inches | 15/33 cm |
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| Rear tread | 52 to 80 inches | 132 to 203 cm |
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