Allis Chalmers U

1929 - 1952

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

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

Continental 4.6L 4-cyl gasoline

Waukesha 4.9L 4-cyl gasoline

Allis-Chalmers 5.2L 4-cyl gasoline

Manufacturer

Continental

Fuel Type

Gasoline

Configuration

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

Manufacturer

Waukesha UM

Fuel Type

Gasoline

Configuration

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

Manufacturer

Allis-Chalmers UM

Fuel Type

Gasoline

Configuration

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

3-speed

4-speed

Gears

3 forward and 1 reverse

Gears

4 forward and 1 reverse

The four-speed transmission was offered on tractors equipped with rubber tires.

Ag front

28x6 steel

Ag rear

42x11 steel

Ag front

6.00x16

Ag rear

12.75x24

Length

118.5 inches 300 cm

Width

63.1 inches 160 cm

Height

53.5 inches 135 cm

Weight

4,600 lbs 2086 kg

NTTL 170: Contintental 3-speed 2WD

NTTL 237: Waukesha 300 3-speed 2WD steel wheels

NTTL 237: Waukesha 300 3-speed 2WD rubber wheels

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.

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.

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.