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Allis Chalmers U

The Allis Chalmers U is a tractor produced by Allis Chalmers. It is equipped with a 318 ci 5.2 L engine. Transmission: 4 forward and 1 reverse. Operating weight: 4,600 lbs 2086 kg.

Fuel & Capacities
Gasoline
Transmission
4 forward and 1 reverse
Operating Weight
4,600 lbs 2086 kg

Overview

Allis Chalmers U tractor photo
1929 - 1952 Standard-tread tractor
Production
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.
Variants
U
standard
UC
row-crop
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
Performance test details ...
Mechanical
Two-wheel drive
Dimensions & Tires
Weight
4,600 lbs 2086 kg
Front tire
28x6
Rear tire
42x11
Full dimensions and tires ...

Engine

Engine options
Continental 4.6L 4-cyl gasoline
Waukesha 4.9L 4-cyl gasoline
Allis-Chalmers 5.2L 4-cyl gasoline

Engine Detail — 283.7 ci / 4.6 L 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

Engine Detail — 300.7 ci / 4.9 L Gasoline

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

Engine Detail — 318 ci / 5.2 L Gasoline

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

Transmission

Transmission options
3-speed
4-speed

Transmission — 3 forward and 1 reverse

Gears
3 forward and 1 reverse
U speeds

Transmission — 4 forward and 1 reverse

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

Dimensions

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

Tests

Tractor Tests
NTTL 170: Contintental 3-speed 2WD
NTTL 237: Waukesha 300 3-speed 2WD steel wheels
NTTL 237: Waukesha 300 3-speed 2WD rubber wheels
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
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
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.

Photos

1938 Allis-Chalmers model U tractor.

1938 Allis-Chalmers model U tractor.

1938 Allis-Chalmers model U tractor.

1938 Allis-Chalmers model U tractor.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Allis Chalmers U.

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours

Allis Chalmers U Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Allis Chalmers U.

Converted Equivalents:

Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS

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