Allis Chalmers M

Last Updated: July 2024

Overview

The Allis Chalmers Model M is an agricultural crawler tractor that provides the stability and traction necessary for various types of farm work. It features a crawler chassis design, which is particularly effective for work in uneven terrain. The tractor is driven by a 4-cylinder gasoline engine from Allis Chalmers with a displacement of 318 cubic inches, capable of running at 1200 RPM. The engine's air-cooling system includes an oil bath air cleaner, a commonly used system in tractors of its time to prevent overheating and to filter particulates. Equipped with a simple gear-driven transmission that offers 4 forward and 1 reverse gear, the Allis Chalmers Model M relies on a Rockford dry plate clutch. Measuring 101.3 inches in length and 57.25 inches in width with an operating weight of 6200 lbs, this tractor was built to handle substantial agricultural tasks while remaining relatively compact. While the original power output is not specified, the tractor's size and engine displacement suggest that it was a capable machine for its era.

Key Specifications

Category: Agricultural, Crawler

Transmission: Gear

Drive Type: Track

Operating Weight: 6200

Fuel Type: Gasoline

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Allis Chalmers M Tractor

Allis Chalmers M vs. Similar Tractors

Operating Weight

Average

Greater than 40% of similar tractors.

Technical Specifications

Engine

Manufacturer: Allis Chalmers
Model: -
Cooling Type: Air-cooled (oil bath air cleaner indicates air cooling with additional oil bath filtration)
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Gasoline
Induction Type: Naturally aspirated
Cylinders: 4
Displacement (ci): 318
Bore (in): 4.5
Stroke (in): 5
Rated RPM: 1200
Power Output (hp): -

Transmission

Type: Gear
Forward Gears: 4
Reverse Gears: 1
Total Gears: -

Dimensions

Length (in): 101.3
Width (in): 57.25
Height (in): 56
Operating Weight (lb): 6200

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: Crawler
Drive Type: Track
Steering Type: Manual
Coolant Capacity (qts): 24
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: Track-driven
Manufacture - End Year: -
Hitch Type: -
Hitch Category: -
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: Electric (6 volts)
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: September 23 to October 9, 1933

Maximum Power and Fuel Consumption

Maximum Belt Power: 31.81 HP
Fuel Consumption at Maximum Power: Not explicitly stated in provided text

Drawbar Performance

Maximum Drawbar Power: 21.81 HP
Measured Speed: Not explicitly stated in provided text
Track and Lugs: Track face of 12 inches, 31 cleats integral with shoes

Torque and Engine Performance

Engine Bore and Stroke: 4¾ inches by 6 inches
Rated Engine RPM: Not explicitly stated in provided text

Hydraulic Performance

Not available: Hydraulic performance metrics not mentioned in provided text

Overall Efficiency

Fuel Type: Gasoline
Total Weight (with operator): 6,620 pounds

Nebraska Tractor Test Lab.(1933).Test 216: Allis-Chalmers Model M. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/823