Allis-Chalmers CA Specs ( 1950-1958 )
Production
| Description | Row-Crop tractor / Built in West Allis, Wisconsin, USA / Original price was $1,900 in 1958 / The live PTO on the CA was due to a hand clutch that "broke" the rear axle, causing the differential to spin freely. |
|---|---|
| Manufacturer | Allis Chalmers |
| Total built | 39,499 |
Engine
| Engine type | Allis Chalmers 2.1L 4-cyl gasoline |
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| Air cleaner | oil bath |
| Bore/Stroke | 3.375x3.50 inches (86 x 89 mm) |
| Compression | 6.25:1 |
| Coolant capacity | 9 qts (8.5 L) |
| Description | Allis Chalmers / gasoline / 4-cylinder 8-valve / liquid-cooled vertical I-head |
| Displacement | 125.2 ci (2.1 L) |
| Exhaust valve clearance | 0.012 inches (hot) (0.305 mm) |
| Firing order | 1-2-4-3 |
| Intake valve clearance | 0.012 inches (hot) (0.305 mm) |
| Point gap | 0.020 inches (0.508 mm) |
| Rated RPM | 1650 |
| Sparkplug | AC45 |
| Sparkplug gap | 0.030 inches (0.762 mm) |
| Starter volts | 6 |
| Belt (tested) | 25.96 hp (19.4 kW) |
| Drawbar (claimed) | 18 hp (13.4 kW) |
| Drawbar (tested) | 22.97 hp (17.1 kW) |
| PTO (claimed) | 23 hp (17.2 kW) |
Transmission
| Clutch | dry disc |
|---|---|
| Gears | 4 forward and 1 reverse |
| Oil capacity | 4 qts (3.8 L) |
| Transmission type | 4-speed non-synchronized |
| Type | non-synchronized |
Mechanical
| Cab | Open operator station |
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| Description | Manual steering / Differential mechanical contracting band brakes |
| Drive type | Two-wheel drive |
Capacity
| Fuel | 13 gal (49.2 L) |
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| Hydraulic system | 2 gal (7.6 L) |
Hydraulics
| Capacity | 2 gal (7.6 L) |
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| Pressure | 3200 psi (220.6 bar) |
Hitch
| Type | Allis Snap Coupler *Available after 1954. |
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PTO
| Rear PTO | live |
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| Rear PTO Type | 538 |
Electrical
| Battery AH | 95 |
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| Battery volts | 6 |
| Charging amps | 10 |
| Charging system | generator |
| Ground | positive |
Dimensions & Tires
| Ag front | 5.00-15 |
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| Ag rear | 10-24 |
| Ballasted weight | 5045 lbs (2288 kg) |
| Front tread | 6.25/13 inches (15/33 cm) |
| Height | 73 inches (185 cm) |
| Length | 125 inches (317 cm) |
| Operating weight | 2835 lbs (1285 kg) |
| Rear tread | 52 to 80 inches (132 to 203 cm) |
| Wheelbase | 82 inches (208 cm) |
| Front tire | 5.00-15 |
| Rear tire | 10-24 |
| Weight | 2835 lbs (1285 kg) |
| Wheelbase | 82 inches (208 cm) |
Belt Pulley
| Diameter | 8 inches (20 cm) |
|---|---|
| RPM | 1220 |
| Speed | 2555 ft/min (778.76 meters/min) |
| Width | 5.5 inches (13 cm) |
CA Serial Numbers
| 1950 | 14 |
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| 1951 | 322 |
| 1952 | 10539 |
| 1953 | 22181 |
| 1954 | 31424 |
| 1955 | 32907 |
| 1956 | 37203 |
| 1957 | 38618 |
| 1958 | 38977 |
| Description | FAQ: How to read a serial number table. |
| Final | 39513 |
| Location: | On top of transmission, by shift lever |
Nebraska Tractor Test 453
| Belt fuel use (max) | 2.4 gal/hour (9.1 l/hour) |
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| Belt power (max) | 25.96 hp (19.4 kW) |
| Description | Gasoline 4-speed 2WDNovember 31 - 9, 1950Link: Nebraska Tractor Test 453 file / Drawbar performance / Gear 2 used for power test. / Gear 1 used for pull test. |
| Max power | 22.97 hp (17.1 kW) |
| Max pull | 3,557 lbs (1613 kg) |
References
| Description | Farm Equipment Service Manual (SM-3) / Farm Power Facts published in 1954, by Allis Chalmers |
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