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Allis Chalmers CA

Allis Chalmers CA tractor
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The Allis Chalmers CA is a row-crop tractor produced from 1950 to 1958 by Allis Chalmers in West Allis, Wisconsin, USA. It features a 2.1L 4-cylinder gasoline engine producing an estimated 25.6 hp, a 4-speed non-synchronized transmission, and two-wheel drive. The tractor has a live rear PTO and an open operator station. It was built in large numbers with 39,499 units produced and originally sold for $1,900 in 1958. The CA is known for its mechanical contracting band brakes and manual steering. It has a wheelbase of 82 inches and weighs 2835 lbs operating weight. The tractor uses 5.00-15 front tires and 10-24 rear tires. The Allis Snap Coupler hitch was available after 1954. The CA is related to the earlier Allis Chalmers C model.
Allis Chalmers CAtractorspecificationsenginetransmissiondimensionspowerhydraulicsfarm tractor
Power25 hp[P]
Founded1950 - 1958
ModelCA

Technical Specifications

Detailed specifications and technical data for Allis Chalmers CA

Power

Belt (tested):25.96 hp (19.4 kW)
PTO (claimed):23 hp (17.2 kW)
Drawbar (tested):22.97 hp (17.1 kW)
Drawbar (claimed):18 hp (13.4 kW)

Tires

Ag rear:10-24
Ag front:5.00-15

Engine

Type:gasoline
Cooling:liquid-cooled vertical I-head
Cylinders:4-cylinder 8-valve
Point gap:0.020 inches (0.508 mm)
Rated RPM:1650
Sparkplugs:AC45, Autolite A-7, Autolite A-9, Champion J-8
Air cleaner:oil bath
Bore/Stroke:3.375x3.50 inches (86 x 89 mm)
Displacement:125.2 ci (2.1 L)
Engine model:Allis Chalmers 2.1L 4-cyl gasoline
Firing order:1-2-4-3
Sparkplug gap:0.030 inches (0.762 mm)
Starter volts:6
Coolant capacity:9 qts (8.5 L)
Compression ratio:6.25:1
Intake valve clearance:0.012 inches (hot) (0.305 mm)
Exhaust valve clearance:0.012 inches (hot) (0.305 mm)

Capacity

Fuel:13 gal (49.2 L)
Hydraulic system:2 gal (7.6 L)

Dimensions

Height:73 inches (185 cm)
Length:125 inches (317 cm)
Wheelbase:82 inches (208 cm)
Rear tread:52 to 80 inches (132 to 203 cm)
Front tread:6.25/13 inches (15/33 cm)
Ballasted weight:5045 lbs (2288 kg)
Operating weight:2835 lbs (1285 kg)

Electrical

Ground:positive
Battery AH:95
Battery volts:6
Charging amps:10
Charging system:generator

Hydraulics

Capacity:2 gal (7.6 L)
Pressure:3200 psi (220.6 bar)

Mechanical

Drive:Two-wheel drive
Brakes:Differential mechanical contracting band brakes
Steering:Manual steering
Operator station:Open operator station

Production

Type:Row-Crop tractor
Built in:West Allis, Wisconsin, USA
Live PTO:due to a hand clutch that "broke" the rear axle, causing the differential to spin freely
Total built:39,499
Original price:$1,900 in 1958
Years produced:1950 - 1958

Belt Pulley

RPM:1220
Speed:2555 ft/min (778.76 meters/min)
Width:5.5 inches (13 cm)
Diameter:8 inches (20 cm)

Transmission

Type:non-synchronized
Gears:4 forward and 1 reverse
Clutch:dry disc
Oil capacity:4 qts (3.8 L)

Tractor hitch

Type:Allis Snap Coupler (Available after 1954)

Power Take-off (PTO)

Rear PTO:live
Rear PTO Type:538

Related Models

Allis Chalmers C

Model:C