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Tractor · 1950Unverified

Allis Chalmers CA

Name: Allis Chalmers CA
Brand: Allis Chalmers

Allis Chalmers CA — Row-Crop tractor · 23 hp. Reference specifications; pending source verification.

The Allis Chalmers CA is a tractor model with a rated power output of 23 hp, positioning it at the lighter end of its class. This model was manufactured from 1950 to 1958. It features a 4-cylinder petrol liquid-cooled engine, coupled with a 4-speed gearbox and two-wheel drive. The operating weight of the model is listed at 1285 kg, with an operating capacity of up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

23 hp

Max power

17.1 kW

Weight

1285 kg

Catalogue coverage

Variants represented

Richest spec table

88 rows

Recorded power

23 hp

Recorded weight

1285 kg

Transmissions

4-speed non-synchronized

Production years

1950-1958

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerAllis ChalmersReference

Row-Crop tractorReference

Built in West Allis, Wisconsin, USAReference

Total built39,499Reference

Original price was $1,900 in 1958Reference

The live PTO on the CA was due to a hand clutch that "broke" the rear axle, causing the differential to spin freely.Reference

Two-wheel driveReference

Manual steeringReference

Differential mechanical contracting band brakesReference

Open operator stationReference

Engine

Allis Chalmers 2.1L 4-cyl gasolineReference

Drawbar (claimed)13.4 kWReference

Drawbar (tested)17.1 kWReference

Belt (tested)19.4 kWReference

Allis ChalmersReference

gasolineReference

4-cylinder 8-valveReference

liquid-cooled vertical I-headReference

Displacement2.1 LReference

Bore/Stroke86 x 89 mmReference

Air cleaneroil bathReference

Compression6.25:1Reference

Rated RPM1650Reference

Firing order1-2-4-3Reference

Starter volts6Reference

Coolant capacity8.5 LReference

SparkplugAC45Reference

SparkplugAutolite A-7Reference

SparkplugAutolite A-9Reference

SparkplugChampion J-8Reference

Sparkplug gap0.762 mmReference

Point gap0.508 mmReference

Intake valve clearance0.305 mmReference

Exhaust valve clearance0.305 mmReference

Belt power (max)19.4 kWReference

Max power17.1 kWReference

Transmission

4-speed non-synchronizedReference

Typenon-synchronizedReference

Gears4 forward and 1 reverseReference

Clutchdry discReference

Oil capacity3.8 LReference

PTO & Hydraulics

PTO (claimed)17.2 kWReference

Hydraulic system7.6 LReference

Capacity7.6 LReference

Pressure220.6 barReference

TypeAllis Snap CouplerReference

Rear PTOliveReference

Rear PTO Type538Reference

Capacities

Fuel49.2 LReference

Diameter20 cmReference

Width13 cmReference

RPM1220Reference

Speed778.76 meters/minReference

Dimensions

Wheelbase208 cmReference

Weight1285 kgReference

Front tire5.00-15Reference

Rear tire10-24Reference

Ag front5.00-15Reference

Ag rear10-24Reference

Length317 cmReference

Height185 cmReference

Operating weight1285 kgReference

Ballasted weight2288 kgReference

Front tread15/33 cmReference

Rear tread132 to 203 cmReference

CA Serial Numbers

Location:On top of transmission, by shift leverReference

195014Reference

1951322Reference

195210539Reference

195322181Reference

195431424Reference

195532907Reference

195637203Reference

195738618Reference

195838977Reference

Final39513Reference

FAQ: How to read a serial number table.Reference

Electrical

GroundpositiveReference

Charging systemgeneratorReference

Charging amps10Reference

Battery volts6Reference

Battery AH95Reference

Test results

Gasoline 4-speed 2WDNovember 31 - 9, 1950Link: Nebraska Tractor Test 453 fileReference

Belt fuel use (max)9.1 l/hourReference

Drawbar performanceReference

Gear 2 used for power test.Reference

Max pull1613 kgReference

Gear 1 used for pull test.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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