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Farmall M

Farmall M tractor
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The Farmall M is a row-crop tractor produced from 1939 to 1954 by Farmall, a part of International Harvester. It was built in Rock Island, Illinois, USA, with a total production of 270,140 units. The M was available in several variants including the MV high-clearance vegetable version and the MD diesel. It was the row-crop version of the McCormick-Deering W-6. Production continued in the late 1950s at Doncaster as the BM model. The tractor features a 4.1L 4-cylinder engine available in distillate and gasoline versions, a 5-speed sliding gear transmission, and two-wheel drive with manual steering. It has a Lift-All optional hydraulic system and a 540 RPM rear PTO. The Farmall M is known for its durability and versatility in farming applications.
Farmall MFarmall tractorInternational Harvesterrow-crop tractor4.1L engine5-speed transmissionFarmall M specificationsFarmall M dimensionsFarmall M attachments
Power38 hp[P]
Founded1939 - 1954
ModelM

Technical Specifications

Detailed specifications and technical data for Farmall M

Power

Plows:3 (14-inch)
PTO (tested):36.07 hp (26.9 kW)
Belt (tested):36.66 hp (27.3 kW)
Belt (claimed):31-33 hp (23.1 kW)
Drawbar (tested):33.1 hp (24.7 kW)
Drawbar (claimed):25 hp (18.6 kW)

Engine

Aux. fuel:1 gal (3.8 L)
Fuel tank:21 gal (79.5 L)
Point gap:0.013 inches (Magneto) (0.330 mm), 0.020 inches (Distributer) (0.508 mm)
Rated RPM:1,450
Bore/Stroke:3.875x5.25 inches (98 x 133 mm)
Compression:4.75:1, 4.5:1 (Kerosene engine)
Displacement:247.7 ci (4.1 L)
Firing order:1-3-4-2
Oil capacity:8 qts (7.6 L)
Sparkplug gap:0.025 inches (0.635 mm)
Engine options:International Harvester 4.1L 4-cyl distillate, International Harvester 4.1L 4-cyl gasoline
Coolant capacity:24 qts (22.7 L)
Rated RPM gasoline:1450
Bore/Stroke gasoline:3.875x5.25 inches (98 x 133 mm)
Compression gasoline:5.65:1
Displacement gasoline:247.7 ci (4.1 L)
Firing order gasoline:1-3-4-2
Oil capacity gasoline:8 qts (7.6 L)
Intake valve clearance:0.017 inches Hot (0.432 mm)
Exhaust valve clearance:0.017 inches Hot (0.432 mm)
Coolant capacity gasoline:24 qts (22.7 L)
International Harvester distillate:4-cylinder, liquid-cooled vertical I-head
International Harvester C248 gasoline:4-cylinder, liquid-cooled vertical I-head

Variants

AM:Australian-built M, built 1949-1954
BM:British-built M
MD:diesel engine
MV:high-crop
I-6:industrial
MDV:diesel high-crop
W-6:standard-front

Hydraulics

Type:Lift-All Optional. Transmission-driven pump.
Pressure:500 psi (early) (34.5 bar), 800 psi (late) (55.2 bar)

Mechanical

Drive:Two-wheel drive
Brakes:Mechanical contracting band brakes
Steering:Manual steering
Operator station:Open operator station.

Production

Type:Row-Crop tractor
Notes:The M was also available in the MV high-clearance "vegetable version" and the MD diesel. The Farmall M was the row-crop version of the McCormick-Deering W-6. In the late 1950s, the M continued production at Doncaster after it had ceased at the Farmall Works, these are often referred to as a model BM.
Built in:Rock Island, Illinois, USA
Total built:270,140
Original price:$1,440 (1946 ), $2,600 (1952 )
Years produced:1939 - 1954

Attachments

Other:front-end loader
Height:96 inches height (at pin) (243 cm)
Loader:International Harvester 30 Loader
Weight:1270 lbs (576 kg)
Bucket width:43.5 inches (110 cm)
Boom cylinder:3.0 inches (7 cm)
Breakout force:5000 lbs breakout (2268 kg), 1500 lbs breakout (at pin) (680 kg)

Transmission

Type:sliding gear
Gears:5 forward and 1 reverse

Serial Numbers

1939:FBK501
1940:FBK7240
1941:FBK25371
1942:FBK50988
1943:FBK60011
1944:FBK67424
1945:FBK88085
1946:FBK105564
1947:FBK122823
1948:FBK151708
1949:FBK180514
1950:FBK213579
1951:FBK247518
1952:FBK290923
Final:FBK298218

Dimensions & Tires

Width:84 inches (213 cm)
Height:78.3 inches (198 cm)
Length:133 inches (337 cm)
Rear tire:11-38
Wheelbase:88.5 inches (224 cm)
Front tire:6.00-16
Rear tread:52 to 88 inches (132 to 223 cm)
Front tread:9.125 inches (23 cm)
Bar rear axle:2.75 inch diameter (69 mm)
Shipping weight:4858 lbs (2203 kg)
Additional tires:22.50x4 (steel) front, 51x8 (steel) rear, 10-38, 12-38, 11.25-36
Ballasted weight:6770 lbs (3070 kg)

Power Take-off (PTO)

Rear PTO Type:540 (1.375)

Related Models

Farmall Super M

Model:Super M

Farmall H

Model:H

Farmall F-30

Model:F-30