allis chalmers u

1929 - 1952

Standard-tread tractor

Standard-tread tractor

Manufacturer

Allis Chalmers

Standard-tread tractor

Built in West Allis, Wisconsin, USA

Total built

19,009

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.

U

standard

UC

row-crop

Continental 4.6L 4-cyl gasoline

Waukesha 4.9L 4-cyl gasoline

Allis-Chalmers 5.2L 4-cyl gasoline

Fuel tank

24 gal 90.8 L

3-speed

4-speed

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

Two-wheel drive

Weight

4,600 lbs 2086 kg

Front tire

28x6

Rear tire

42x11

Location:

Rear of differential, near PTO

1929

1

1930

1975

1931

6554

1932

7262

1933

7419

1934

7685

1935

8063

1936

9471

1937

12822

1938

14855

1939

15587

1940

16078

1941

16722

1942

17137

1943

17470

1944

17802

1945

-unknown-

1946

-unknown-

1947

18309, 20174

1948

18613, 20179, 21000

1949

20301, 210036, 22018

1950

20422, 22024

FAQ: How to read a serial number table.