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Farmall B

Farmall B tractor
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The Farmall B is a row-crop tractor produced from 1939 to 1947 by Farmall, a part of International Harvester. It was built in Chicago, Illinois and Louisville, Kentucky, USA, with a total production of 75,241 units. The Farmall B was nearly identical to the Farmall A, but featured a centered engine, seat offset to the right, and a narrow front end. It was powered by a 1.9L 4-cylinder gasoline or kerosene engine, had a 4-speed gear transmission, and was designed for two-wheel drive with manual steering. The tractor had a weight of 2400 lbs (1088 kg) and featured various tire options. It was equipped with an IH Pneumatic Lift-All hitch and a rear PTO with a 540 rpm type. The Farmall B was known for its reliability and versatility in row-crop farming.
Farmall BFarmall tractorInternational Harvesterrow-crop tractor1.9L engine4-speed transmissiontractor specificationsvintage tractors
Power21 hp[B]
Founded1939 - 1947
ModelB

Technical Specifications

Detailed specifications and technical data for Farmall B

Power

Plows:1 16 inch
Belt (tested):18.39 hp (13.7 kW)
Belt (claimed):19.22 hp (14.3 kW)
Drawbar (tested):16.21 hp (12.1 kW)
Drawbar (claimed):17.31 hp (12.9 kW)

Tires

Rear tire:8-24; 9-24; 10-24; 5-30
Front tire:6.00-12; 4.00-15; 7.50-10

Engine

Starter:manual; electric Optional
Idle RPM:900-1400
Aux. fuel:1 gal (3.8 L)
Fuel tank:10 gal (37.9 L)
Point gap:0.020 inches (0.508 mm)
Rated RPM:1400
Bore/Stroke:3.00x4.00 inches (76 x 102 mm)
Compression:5.33:1
Displacement:113.1 ci (1.9 L)
Firing order:1-3-4-2
Oil capacity:5 qts (4.7 L)
Sparkplug gap:0.025 inches (0.635 mm)
Starter volts:6
Engine options:International Harvester 1.9L 4-cyl gasoline; International Harvester 1.9L 4-cyl kerosene
Coolant capacity:13.5 qts (12.8 L)
Starter Kerosene:manual; electric Optional
Point gap Kerosene:0.020 inches (0.508 mm)
Rated RPM Kerosene:1400
Bore/Stroke Kerosene:3.00x4.00 inches (76 x 102 mm)
Displacement Kerosene:113.1 ci (1.9 L)
Firing order Kerosene:1-3-4-2
Oil capacity Kerosene:5 qts (4.7 L)
Engine Detail Gasoline:International Harvester C113 gasoline 4-cylinder liquid-cooled inline
Engine Detail Kerosene:International Harvester kerosene 4-cylinder liquid-cooled vertical I-head
Intake valve clearance:0.014 inches (hot) (0.356 mm)
Sparkplug gap Kerosene:0.025 inches (0.635 mm)
Starter volts Kerosene:6
Exhaust valve clearance:0.014 inches (hot) (0.356 mm)
Coolant capacity Kerosene:13.5 qts (12.8 L)
Intake valve clearance Kerosene:0.014 inches (hot) (0.356 mm)
Exhaust valve clearance Kerosene:0.014 inches (hot) (0.356 mm)

Variants

B:full width
BN:narrow tread

Dimensions

Width:79.5 inches (201 cm)
Height:65 inches (165 cm)
Length:108 inches (274 cm)
Weight:2400 lbs (1088 kg)
Rear tread (wheel in):64/68/72/76 inches (162/172/182/193 cm)
Rear tread (wheel out):80/84/88/92 inches (203/213/223/233 cm)

Electrical

Ground:positive
Battery volts:6
Charging system:generator

Mechanical

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

Production

Notes:The Farmall A and B were nearly identical tractors. The A featured an offset engine and wide front end. The B had a centered engine, seat offset to the right, and narrow front end.
Factories:Chicago, Illinois, USA; Louisville, Kentucky, USA
Total built:75,241
Manufacturer:Farmall (a part of International Harvester)
Original price:$770
Years produced:1939 - 1947

Belt Pulley

RPM:1157
Speed:2574 ft/min (784.56 meters/min)
Width:6 inches (15 cm)
Diameter:8.5 inches (21 cm)

Transmission

Type:gear
Gears:4 forward and 1 reverse
Manufacturer:International Harvester

Tractor hitch

Type:IH Pneumatic Lift-All

Serial Numbers

1939:FAB3675
1940:6744
1941:41500
1942:80739
1944:96390
1945:113218
1946:146700
1947 Chicago:182964
1947 Louisville:200001

Power Take-off (PTO)

Rear PTO:transmission
Rear PTO Type:540 (1.125)