Farmall B tractor specifications

1939 - 1947

1939 - 1947 Row-Crop tractor

Production

Production Manufacturer:Farmall (a part of International Harvester)
Type:Row-Crop tractor
Factories:Chicago, Illinois, USA
Louisville, Kentucky, USA
Total built:75,241
Original price:$770
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.

Variants

Variants B:full width
BN:narrow tread

1939 - 1947

Row-Crop tractor

Production

Production
Manufacturer:	Farmall (a part of International Harvester)
Type:	Row-Crop tractor
Factories:	Chicago, Illinois, USA
	Louisville, Kentucky, USA
Total built:	75,241
Original price:	$770
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.

Variants

Variants
B:	full width
BN:	narrow tread

Farmall B Power

Farmall B Power
Plows:	1 (16 inch)
Drawbar (tested):	16.21 hp 12.1 kW
Belt (tested):	18.39 hp 13.7 kW
power test details ...

Farmall B Engines

Farmall B Engines
International Harvester 1.9L 4-cyl gasoline
International Harvester 1.9L 4-cyl kerosene
Fuel tank:	10 gal 37.9 L
Aux. fuel:	1 gal 3.8 L
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Steering:	manual
Cab:	Open operator station.
Transmission:	4-speed sliding gear
Transmission details ...

Power Take-off (PTO)

Power Take-off (PTO)
Rear RPM:	540

Dimensions & Tires

Dimensions & Tires
Weight:	2400 lbs 1088 kg
Front tire:	6-12
Rear tire:	9-24
Full dimensions and tires ...

B Serial Numbers

B Serial Numbers
Location:	Seat support bracket
photo of B serial number
1939:	501
1940:	6744
1941:	41500
1942:	80739
1944:	96390
1945:	113218
1946:	146700
1947:	182964 (Chicago)
1947:	200001 (Louisville)
how to read serial numbers...

Belt Pulley

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

Farmall B Power

Farmall B Power Plows:1 (16 inch)
Drawbar (tested):16.21 hp
12.1 kW
Belt (tested):18.39 hp
13.7 kW
power test details ...

1939 - 1947

Row-Crop tractor

Nebraska Tractor Test 331

Nebraska Tractor Test 331
Gasoline 4-speed 2WD September 25 - 29, 1939 Link: Nebraska Tractor Test 331 file
Belt power (max):	18.39 hp 13.7 kW
Belt fuel use (max):	1.6 gal/hour 6.1 l/hour
Drawbar performance
Max power:	16.21 hp 12.1 kW
Gear 2 used for power test.
Max pull:	2,377 lbs 1078 kg
Gear 1 used for pull test.

Nebraska Tractor Test 332

Nebraska Tractor Test 332
Distillate 4-speed 2WD October 9 - 13, 1939 Link: Nebraska Tractor Test 332 file
Belt power (max):	16.00 hp 11.9 kW
Belt fuel use (max):	1.4 gal/hour 5.3 l/hour
Drawbar performance
Max power:	14.73 hp 11.0 kW
Fuel use:	1.2 gal/hour 4.5 l/hour
Gear 2 used for power test.
Max pull:	2,463 lbs 1117 kg
Gear 1 used for pull test.

Farmall B Engines

Farmall B Engines International Harvester 1.9L 4-cyl gasoline International Harvester 1.9L 4-cyl kerosene Fuel tank:10 gal
37.9 L
Aux. fuel:1 gal
3.8 L
Engine details ...

1939 - 1947

Row-Crop tractor

Engines overview

Engines overview
International Harvester 1.9L 4-cyl gasoline
International Harvester 1.9L 4-cyl kerosene

Engine Detail

Engine Detail
International Harvester C113
gasoline
4-cylinder
liquid-cooled vertical I-head
Displacement:	113.1 ci 1.9 L
Bore/Stroke:	3.00x4.00 inches 76 x 102 mm
Compression:	5.33:1
Rated RPM:	1400
Firing order:	1-3-4-2
Oil capacity:	5 qts 4.7 L
Coolant capacity:	13.5 qts 12.8 L
Sparkplug gap:	0.025 inches 0.635 mm
Point gap:	0.020 inches 0.508 mm
Intake valve clearance:	0.014 inches 0.356 mm (hot)
Exhaust valve clearance:	0.014 inches 0.356 mm (hot)

Engine Detail

Engine Detail
International Harvester
kerosene
4-cylinder
liquid-cooled vertical I-head
Displacement:	113.1 ci 1.9 L
Bore/Stroke:	3.00x4.00 inches 76 x 102 mm
Rated RPM:	1400
Firing order:	1-3-4-2
Oil capacity:	5 qts 4.7 L
Coolant capacity:	13.5 qts 12.8 L
Sparkplug gap:	0.025 inches 0.635 mm
Point gap:	0.020 inches 0.508 mm
Intake valve clearance:	0.014 inches 0.356 mm (hot)
Exhaust valve clearance:	0.014 inches 0.356 mm (hot)

Mechanical

Mechanical Chassis:4x2 2WD
Steering:manual
Cab:Open operator station.
Transmission:4-speed sliding gear
Transmission details ...

1939 - 1947

Row-Crop tractor

Transmission

Transmission
Type:	sliding gear
Gears:	4 forward and 1 reverse

Speeds

Speeds

Power Take-off (PTO)

Power Take-off (PTO) Rear RPM:540

Dimensions & Tires

Dimensions & Tires Weight:2400 lbs
1088 kg
Front tire:6-12
Rear tire:9-24
Full dimensions and tires ...

1939 - 1947

Row-Crop tractor

Farmall B Tires

Farmall B Tires
Ag front:	6-12
Ag rear:	9-24
Ag front:	4.00-15
	5.00-15
Ag rear:	9-24

Dimensions

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

B Serial Numbers

B Serial Numbers Location:Seat support bracket
photo of B serial number
1939:501
1940:6744
1941:41500
1942:80739
1944:96390
1945:113218
1946:146700
1947:182964 (Chicago)
1947:200001 (Louisville)

how to read serial numbers...