Farmall B

The Farmall B is a tractor produced by Farmall. It is equipped with a 113.1 ci 1.9 L engine. The rated power output is 16.00 hp 11.9 kW. Transmission: 4 forward and 1 reverse. Operating weight: 2400 lbs 1088 kg.

Overview

	1939 - 1947 Row-Crop tractor
1939 - 1947
Row-Crop tractor

Production
Manufacturer	Farmall (a part of International Harvester)
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
B	full width
BN	narrow tread

Farmall B Transmission
4-speed sliding gear
Transmission details ...

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

Mechanical
Two-wheel drive
Manual steering
Open operator station.

Power Take-off (PTO)
Rear PTO Type	540

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

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

References
Farmall Letter Series Tractors by Lee Klancher

Engine

Engine options
International Harvester 1.9L 4-cyl gasoline
International Harvester 1.9L 4-cyl kerosene

Engine Detail — 113.1 ci / 1.9 L Gasoline

Manufacturer	International Harvester C113
Fuel Type	Gasoline
Configuration	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 (hot) 0.356 mm
Exhaust valve clearance	0.014 inches (hot) 0.356 mm

Engine Detail — 113.1 ci / 1.9 L Kerosene

Manufacturer	International Harvester
Fuel Type	Kerosene
Configuration	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 (hot) 0.356 mm
Exhaust valve clearance	0.014 inches (hot) 0.356 mm

Transmission

Transmission — 4 forward and 1 reverse sliding gear

Type	sliding gear
Gears	4 forward and 1 reverse

Dimensions

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

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)

Tests

Tractor Tests
NTTL 331: gasoline 4-speed 2WD
NTTL 332: distillate 4-speed 2WD

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
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.

Photos

Farmall B, front-right view.

Farmall B, left side.