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Years in Production / 1929–1952
Allis-Chalmers
U
Explore the specifications, hardware, and original references for the Allis-Chalmers U.
34hp
Engine estimate · from belt
2WD Only
Drive
1929–1952
Production years
Allis-Chalmers
Manufacturer
U / 01
At a glance
Production
Standard-tread tractor
Built in West Allis, Wisconsin, USA
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.
- Manufacturer
- Allis Chalmers
- Total Built
- 19,009
Mechanical
Two-wheel drive
U / 02
Under the hood
Engine Detail (Option 1)
Continental
gasoline
4-cylinder
liquid-cooled
- Displacement
- 283.7 ci4.6 L
- Bore Stroke
- 4.25x5.00 inches108 x 127 mm
- Rated Rpm
- 1200
- Coolant Capacity
- 20 qts18.9 L
- Fuel Type
- gasoline
- Cylinders
- 4
- Cooling
- liquid-cooled
Engine Detail (Option 2)
Waukesha UM
gasoline
4-cylinder
liquid-cooled
The UM engine was used beginning in 1932, tractor serial number 7405.
- Displacement
- 300.7 ci4.9 L
- Bore Stroke
- 4.375x5.00 inches111 x 127 mm
- Rated Rpm
- 1200
- Fuel Type
- gasoline
- Cylinders
- 4
- Cooling
- liquid-cooled
Engine Detail (Option 3)
Allis-Chalmers UM
gasoline
4-cylinder
liquid-cooled
Final engine, available in 1936 (SN 12001)
- Displacement
- 318 ci5.2 L
- Bore Stroke
- 4.50x5.00 inches114 x 127 mm
- Rated Rpm
- 1200
- Fuel Type
- gasoline
- Cylinders
- 4
- Cooling
- liquid-cooled
Engine Options
Continental 4.6L 4-cyl gasoline
Waukesha 4.9L 4-cyl gasoline
Allis-Chalmers 5.2L 4-cyl gasoline
- Fuel Tank
- 24 gal90.8 L
U / 03
Gears & controls
Transmission (Option 1)
- Gears
- 3 forward and 1 reverse
Transmission (Option 2)
The four-speed transmission was offered on tractors equipped with rubber tires.
- Gears
- 4 forward and 1 reverse
U / 04
Size. Stance. Footprint.
Dimensions And Tires
- Weight
- 4,600 lbs2086 kg
- Front Tire
- 28x6
- Rear Tire
- 42x11
Tires And Tracks
- Front Ag
- 28x6 steel
- Front Ag
- 6.00x16
- Rear Ag
- 42x11 steel
- Rear Ag
- 12.75x24
U / 05
Tractor Photos
See it in action
Videos
Watch Allis-Chalmers U videos from their original YouTube creators.
U / 07
Tests (NTTL)
Nebraska Tractor Test 170
Contintental 3-speed 2WDOctober 21 - November 7, 1929
Drawbar performance
Gear 1 used for power test.
Gear 1 used for pull test.
- Id
- 170
- Belt Power Max
- 35.04 hp26.1 kW
- Belt Fuel Use Max
- 4.2 gal/hour15.9 l/hour
- Max Power
- 25.63 hp19.1 kW
- Max Pull
- 3,679 lbs1668 kg
Nebraska Tractor Test 237
Waukesha 300 3-speed 2WD steel wheelsJuly 15 - August 5, 1935
Drawbar performance
Gear 2 used for power test.
Gear 1 used for pull test.
- Id
- 237
- Belt Power Max
- 34.12 hp25.4 kW
- Belt Fuel Use Max
- 4.1 gal/hour15.5 l/hour
- Max Power
- 23.83 hp17.8 kW
- Max Pull
- 3,428 lbs1554 kg
Nebraska Tractor Test 237
Waukesha 300 3-speed 2WD rubber wheelsJuly 15 - August 5, 1935
Drawbar performance
Gear 4 used for power test.
Gear 2 used for pull test.
- Id
- 237
- Belt Power Max
- 34.12 hp25.4 kW
- Belt Fuel Use Max
- 4.1 gal/hour15.5 l/hour
- Max Power
- 30.37 hp22.6 kW
- Max Pull
- 2,452 lbs1112 kg