Farmall M

1939 - 1954

Row-Crop tractor

Manufacturer

Farmall (a part of International Harvester)

Row-Crop tractor

Built in Rock Island, Illinois, USA

Total built

270,140

Original price

$1,440 (1946 )

$2,600 (1952 )

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.

MD

diesel engine

MV

high-crop

MDV

diesel high-crop

AM

Australian-built M, built 1949-1954

BM

British-built M

W-6

standard-front

I-6

industrial

5-speed sliding gear

Drawbar (claimed)

25 hp 18.6 kW

Belt (claimed)

31-33 hp 23.1 kW

Plows

3 (14-inch)

Drawbar (tested)

33.1 hp 24.7 kW

PTO (tested)

36.07 hp 26.9 kW

Belt (tested)

36.66 hp 27.3 kW

Two-wheel drive

Manual steering

Mechanical contracting band brakes

Open operator station.

Type

Lift-All *Optional. Transmission-driven pump.

Pressure

500 psi (early) 34.5 bar

800 psi (late) 55.2 bar

Rear PTO Type

540 (1.375)

Wheelbase

88.5 inches 224 cm

Weight

4858 lbs 2203 kg

Front tire

6.00-16

Rear tire

11-38

Farmall Letter Series Tractors by Lee Klancher

No. 30 Power Loader published by International Harvester

Farm Loaders published in 1962, by International Harvester

Operator's Manual Farmall M and MV

General Line Catalog published in 1949, by International Harvester

International Harvester 4.1L 4-cyl distillate

International Harvester 4.1L 4-cyl gasoline

Manufacturer

International Harvester

Configuration

4-cylinder, liquid-cooled vertical I-head

distillate

Displacement

247.7 ci 4.1 L

Bore/Stroke

3.875x5.25 inches 98 x 133 mm

Compression

4.75:1

4.5:1 *Kerosene engine

Rated RPM

1,450

Firing order

1-3-4-2

Oil capacity

8 qts 7.6 L

Coolant capacity

24 qts 22.7 L

Sparkplug gap

0.025 inches 0.635 mm

Point gap

0.013 inches (Magneto) 0.330 mm

0.020 inches (Distributer) 0.508 mm

Intake valve clearance

0.017 inches*Hot 0.432 mm

Exhaust valve clearance

0.017 inches*Hot 0.432 mm

Manufacturer

International Harvester C248

Fuel Type

Gasoline

Configuration

4-cylinder, liquid-cooled vertical I-head

Displacement

247.7 ci 4.1 L

Bore/Stroke

3.875x5.25 inches 98 x 133 mm

Compression

5.65:1

Rated RPM

1450

Firing order

1-3-4-2

Oil capacity

8 qts 7.6 L

Coolant capacity

24 qts 22.7 L

Type

sliding gear

Gears

5 forward and 1 reverse

Ag front

6.00-16

Ag rear

11-38

Ag front

22.50x4 (steel)

Ag rear

51x8 (steel)

10-38

12-38

11.25-36

Wheelbase

88.5 inches 224 cm

Length

133 inches 337 cm

Width

84 inches 213 cm

Height

78.3 inches 198 cm

Shipping weight

4858 lbs 2203 kg

Ballasted weight

6770 lbs 3070 kg

Bar rear axle

2.75 inch diameter 69 mm

Front tread

9.125 inches 23 cm

Rear tread

52 to 88 inches 132 to 223 cm

NTTL 327: distillate 5-speed 2WD

NTTL 328: gasoline 5-speed 2WD

Distillate 5-speed 2WD September 5 - 16, 1939 Link: Nebraska Tractor Test 327 file

Belt power (max)

34.82 hp 26.0 kW

Belt fuel use (max)

2.8 gal/hour 10.6 l/hour

PTO performance

Power at rated engine speed

34.16 hp 25.5 kW

Fuel use

2.7 gal/hour 10.2 l/hour

Drawbar performance

Max power

30.62 hp 22.8 kW

Gear 2 used for power test.

Max pull

4,365 lbs 1979 kg

Gear 1 used for pull test.

Gasoline 5-speed 2WD September 11 - 21, 1939 Link: Nebraska Tractor Test 328 file

Belt power (max)

36.66 hp 27.3 kW

Belt fuel use (max)

3.0 gal/hour 11.4 l/hour

PTO performance

Power at rated engine speed

36.07 hp 26.9 kW

Fuel use

3.0 gal/hour 11.4 l/hour

Drawbar performance

Max power

33.1 hp 24.7 kW

Max pull

4,266 lbs 1935 kg

Gear 1 used for pull test.