Allis Chalmers U tractor specifications

1929 - 1952

1929 - 1952 Standard-tread tractor

Production

Production Manufacturer:Allis Chalmers
Type:Standard-tread tractor
Factory: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.

Variants

Variants U:standard
UC:row-crop

1929 - 1952

Standard-tread tractor

Production

Production
Manufacturer:	Allis Chalmers
Type:	Standard-tread tractor
Factory:	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.

Variants

Variants
U:	standard
UC:	row-crop

Allis Chalmers U Power

Allis Chalmers U 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
power test details ...

Allis Chalmers U Engines

Allis Chalmers U Engines
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
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Transmissions:	3-speed
	4-speed
Transmission details ...

Dimensions & Tires

Dimensions & Tires
Weight:	4,600 lbs 2086 kg
Front tire:	28x6
Rear tire:	42x11
Full dimensions and tires ...

U Serial Numbers

U Serial Numbers
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:	(none)
1946:	(none)
1947:	18309, 20174
1948:	18613, 20179, 21000
1949:	20301, 210036, 22018
1950:	20422, 22024
how to read serial numbers...

Allis Chalmers U Power

Allis Chalmers U 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
power test details ...

1929 - 1952

Standard-tread tractor

Nebraska Tractor Test 170

Nebraska Tractor Test 170
Contintental 3-speed 2WD October 21 - November 7, 1929 Link: Nebraska Tractor Test 170 file
Belt power (max):	35.04 hp 26.1 kW
Belt fuel use (max):	4.2 gal/hour 15.9 l/hour
Drawbar performance
Max power:	25.63 hp 19.1 kW
Gear 1 used for power test.
Max pull:	3,679 lbs 1668 kg
Gear 1 used for pull test.

Nebraska Tractor Test 237

Nebraska Tractor Test 237
Waukesha 300 3-speed 2WD steel wheels July 15 - August 5, 1935 Link: Nebraska Tractor Test 237 file
Belt power (max):	34.12 hp 25.4 kW
Belt fuel use (max):	4.1 gal/hour 15.5 l/hour
Drawbar performance
Max power:	23.83 hp 17.8 kW
Gear 2 used for power test.
Max pull:	3,428 lbs 1554 kg
Gear 1 used for pull test.

Nebraska Tractor Test 237

Nebraska Tractor Test 237
Waukesha 300 3-speed 2WD rubber wheels July 15 - August 5, 1935 Link: Nebraska Tractor Test 237 file
Belt power (max):	34.12 hp 25.4 kW
Belt fuel use (max):	4.1 gal/hour 15.5 l/hour
Drawbar performance
Max power:	30.37 hp 22.6 kW
Gear 4 used for power test.
Max pull:	2,452 lbs 1112 kg
Gear 2 used for pull test.

Allis Chalmers U Engines

Allis Chalmers U Engines 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
Engine details ...

1929 - 1952

Standard-tread tractor

Engines overview

Engines overview
Continental 4.6L 4-cyl gasoline
Waukesha 4.9L 4-cyl gasoline
Allis-Chalmers 5.2L 4-cyl gasoline

Engine Detail

Engine Detail
Continental
gasoline
4-cylinder
liquid-cooled
Displacement:	283.7 ci 4.6 L
Bore/Stroke:	4.25x5.00 inches 108 x 127 mm
Rated RPM:	1200
Coolant capacity:	20 qts 18.9 L

Engine Detail

Engine Detail
Waukesha UM
gasoline
4-cylinder
liquid-cooled
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

Engine Detail

Engine Detail
Allis-Chalmers UM
gasoline
4-cylinder
liquid-cooled
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

Mechanical

Mechanical Chassis:4x2 2WD
Transmissions:3-speed
4-speed
Transmission details ...

1929 - 1952

Standard-tread tractor

Transmissions overview

Transmissions overview
3-speed
4-speed

Transmission

Transmission
Gears:	3 forward and 1 reverse

Speeds

Speeds

Transmission

Transmission
Gears:	4 forward and 1 reverse
The four-speed transmission was offered on tractors equipped with rubber tires.

Speeds

Speeds

Dimensions & Tires

Dimensions & Tires Weight:4,600 lbs
2086 kg
Front tire:28x6
Rear tire:42x11
Full dimensions and tires ...

1929 - 1952

Standard-tread tractor

Allis Chalmers U Tires

Allis Chalmers U Tires
Ag front:	28x6 steel
Ag rear:	42x11 steel
Ag front:	6.00x16
Ag rear:	12.75x24

Dimensions

Dimensions
Length:	118.5 inches 300 cm
Width:	63.1 inches 160 cm
Height:	53.5 inches 135 cm
Weight:	4,600 lbs 2086 kg

U Serial Numbers

U Serial Numbers 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:(none)
1946:(none)
1947:18309, 20174
1948:18613, 20179, 21000
1949:20301, 210036, 22018
1950:20422, 22024

how to read serial numbers...