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Allis Chalmers M

Allis Chalmers M tractor
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The Allis Chalmers M is an agricultural crawler tractor produced from 1932 to 1942 by Allis Chalmers in Springfield, Illinois, USA. It features a crawler drive with an open operator station and was built in standard and wide variants. The tractor was powered by either a 4.9L or 5.2L 4-cylinder gasoline engine, liquid-cooled with vertical I-head design. It has a 4-speed gear transmission with a Rockford dry plate clutch. The M model was known for its reliable power output with claimed drawbar power of 22 hp and tested drawbar power of nearly 30 hp. It weighs approximately 6200 lbs and runs on 12-inch wide tracks providing low ground pressure for agricultural tasks.
Allis Chalmers Mtractorcrawler tractor4.9L engine5.2L engine4-speed transmissionagricultural tractortractor specifications
Power35 hp[B]
Founded1932 - 1942
ModelM

Technical Specifications

Detailed specifications and technical data for Allis Chalmers M

Power

Belt (tested):35.43 hp (26.4 kW)
Belt (claimed):32 hp (23.9 kW)
Drawbar (tested):29.65 hp (22.1 kW)
Drawbar (claimed):22 hp (16.4 kW)

Engine

Details (4.9L):Allis Chalmers gasoline 4-cylinder liquid-cooled vertical I-head, Displacement 300.7 ci (4.9 L), Bore/Stroke 4.375x5.00 inches (111 x 127 mm), Air cleaner oil bath, Compression 4.2:1 (early), 4.7:1 (late), Rated RPM 1200, Starter volts 6, Oil capacity 10 qts (9.5 L), Coolant capacity 24 qts (22.7 L)
Details (5.2L):Allis Chalmers gasoline 4-cylinder liquid-cooled vertical I-head, Displacement 318 ci (5.2 L), Bore/Stroke 4.50x5.00 inches (114 x 127 mm), Air cleaner oil bath, Rated RPM 1200
Engine options:Allis Chalmers 4.9L 4-cyl gasoline, Allis Chalmers 5.2L 4-cyl gasoline

Variants

M:standard width
WM:wide

Mechanical

Drive:crawler
Operator station:Open operator station

Production

Built in:Springfield, Illinois, USA
Total built:14,524
Manufacturer:Allis Chalmers
Years produced:1932 - 1942

Transmission

Type:gear
Gears:4 forward and 1 reverse
Clutch:Rockford dry plate
Oil capacity:12 qts (11.4 L)

Dimensions & Tracks

Gauge:40 inches (101 cm)
Width:57.25 inches (145 cm)
Height:56 inches (142 cm)
Length:101.3 inches (257 cm)
Weight:6200 lbs (2812 kg)
Track width:12 inches (30 cm)
Ground pressure:4.8 psi (0.3 bar)
Track area on ground:1353 in² (0.9 m²)
Track length on ground:56.4 inches (143 cm)