All 60 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
(no label)
Standard-tread tractor
(no label)
Built in West Allis, Wisconsin, USA
Total built
19,009
(no label)
Tractors fitted with factory steel wheels had a 3-speed gearbox, done by removing a shifter fork from the regular transmission. The U was also sold as the United Model U (1929-1931), and was distributed by the United Tractor and Equipment Corporation. United was a group of Fordson dealers who contracted Allis for a new tractor, once Ford stopped North American production of the Fordson.
Engine
(no label)
Continental 4.6L 4-cyl gasoline
(no label)
Waukesha 4.9L 4-cyl gasoline
(no label)
Allis-Chalmers 5.2L 4-cyl gasoline
Fuel tank
24 gal | 90.8 L
Transmission
(no label)
3-speed
(no label)
4-speed
Power
Drawbar (claimed)
20 hp | 14.9 kW
Belt (claimed)
31 hp | 23.1 kW
Plows
3 (14-inch)
Drawbar (tested)
30.37 hp | 22.6 kW
Belt (tested)
35.04 hp | 26.1 kW
Mechanical
(no label)
Two-wheel drive
Dimensions
Weight
4,600 lbs | 2086 kg
Front tire
28x6
Rear tire
42x11
Engine
Engine options
(no label)
Continental 4.6L 4-cyl gasoline
(no label)
Waukesha 4.9L 4-cyl gasoline
(no label)
Allis-Chalmers 5.2L 4-cyl gasoline
Engine detail
(no label)
Continental
(no label)
gasoline
(no label)
4-cylinder
(no label)
liquid-cooled
Displacement
283.7 ci | 4.6 L
Bore/Stroke
4.25x5.00 inches | 108 x 127 mm
Rated RPM
1200
Coolant capacity (Coolant)
20 qts | 18.9 L
(no label)
Waukesha UM
(no label)
gasoline
(no label)
4-cylinder
(no label)
liquid-cooled
(no label)
The UM engine was used beginning in 1932, tractor serial number 7405.
Displacement
300.7 ci | 4.9 L
Bore/Stroke
4.375x5.00 inches | 111 x 127 mm
Rated RPM
1200
(no label)
Allis-Chalmers UM
(no label)
gasoline
(no label)
4-cylinder
(no label)
liquid-cooled
(no label)
Final engine, available in 1936 (SN 12001)
Displacement
318 ci | 5.2 L
Bore/Stroke
4.50x5.00 inches | 114 x 127 mm
Rated RPM
1200
Transmission
Transmission options
(no label)
3-speed
(no label)
4-speed
Transmission
Gears
3 forward and 1 reverse
Gears
4 forward and 1 reverse
(no label)
The four-speed transmission was offered on tractors equipped with rubber tires.