Allis Chalmers 6-12

The Allis Chalmers 6-12 is a tractor produced by Allis Chalmers. It is equipped with a 138.1 ci 2.3 L engine. Transmission: 1 forward and reverse. Operating weight: 2500 lbs 1134 kg.

Fuel & Capacities

8.5 gal 32.2 L

Transmission

1 forward and reverse

Operating Weight

2500 lbs 1134 kg

Overview

	1919 - 1926

Production
Manufacturer	Allis Chalmers
Built in West Allis, Wisconsin, USA
Total built	1,470
Original price was $795 in 1919

Allis Chalmers 6-12 Engine
Le Roi 2.3L 4-cyl gasoline
Fuel tank	8.5 gal 32.2 L
Engine details ...

Allis Chalmers 6-12 Transmission
1-speed gear
Transmission details ...

Allis Chalmers 6-12 Power
Drawbar (claimed)	6 hp 4.5 kW
Belt (claimed)	12 hp 8.9 kW
Drawbar (tested)	6.29 hp 4.7 kW
Belt (tested)	12.37 hp 9.2 kW
Performance test details ...

Mechanical
Two-wheel drive
Manual steering
Open operator station.

Dimensions & Tires
Weight	2500 lbs 1134 kg
Front tire	48x6
Rear tire	28x6
Full dimensions and tires ...

Engine

Engine Detail — 138.1 ci / 2.3 L Gasoline

Manufacturer	Le Roi 2-C
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled
Displacement	138.1 ci 2.3 L
Bore/Stroke	3.125x4.50 inches 79 x 114 mm
Rated RPM	1200
Coolant capacity	14 qts 13.2 L

Transmission

Transmission — 1 forward and reverse gear

Type	gear
Gears	1 forward and reverse

Dimensions

Allis Chalmers 6-12 Tires
Ag front	48x6 steel
Ag rear	28x6 steel

Dimensions
Length	156 inches 396 cm
Width	54 inches 137 cm
Height	72 inches 182 cm
Weight	2500 lbs 1134 kg

Tests

Nebraska Tractor Test 54
Gasoline 1-speed 2WD August 17 - 26, 1920 Link: Nebraska Tractor Test 54 file
Belt power (max)	12.37 hp 9.2 kW
Belt fuel use (max)	1.8 gal/hour 6.8 l/hour
Drawbar performance
Max power	6.29 hp 4.7 kW
Fuel use	1.6 gal/hour 6.1 l/hour
Gear 1 used for power test.
Max pull	1142 lbs 518 kg
Gear 1 used for pull test.

Photos

Allis-Chalmers 6-12, front-left view.

Allis-Chalmers 6-12, right side.

Allis-Chalmers 6-12 with Russell Motor Hi-Way Patrol road grader.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Allis Chalmers 6-12.

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