Tractor · 1950Unverified
Allis Chalmers CA
Allis Chalmers CA — Row-Crop tractor · 23 hp. Reference specifications; pending source verification.
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
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.