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Farmall F-20

The Farmall F-20 is a tractor produced by Farmall. It is equipped with a 220.9 ci 3.6 L engine. Transmission: 4 forward and 1 reverse. Operating weight: 4400 lbs 1995 kg.

Fuel & Capacities
13 gal 49.2 L
Transmission
4 forward and 1 reverse
Operating Weight
4400 lbs 1995 kg

Overview

Farmall F-20 tractor photo
1932 - 1939 Row-Crop tractor
Production
Manufacturer
Farmall (a part of International Harvester)
Row-Crop tractor
Built in Rock Island, Illinois, USA
Total built
154,398
Original price was $1000 in 1936
The Farmall F-20 was originally advertised as the "Increased-Power Farmall", and was similar to the orginal Farmall. The tractor paint scheme changed from gray to red on November 1, 1936 (the beginning of the 1937 production year). A number of F-20s were built in early 1934 using the Farmall Regular rear end and F-20 engine. These tractors are identified by a TA serial number prefix.
Farmall F-20 Engine
International Harvester 3.6L 4-cyl distillate
Fuel tank
13 gal 49.2 L
Aux. fuel
0.875 gal 3.3 L
Engine details ...
Farmall F-20 Transmission
4-speed sliding gear
Transmission details ...
Farmall F-20 Power
Drawbar (claimed)
19.6 hp 14.6 kW
PTO (claimed)
26.67 hp 19.9 kW
Plows
2
Drawbar (tested)
20.66 hp 15.4 kW
Belt (tested)
28.0 hp 20.9 kW
Performance test details ...
Mechanical
Two-wheel drive
Manual steering
Mechanical band brakes
Open operator station.
Power Take-off (PTO)
Rear PTO
transmission
Rear PTO Type
540 (1.125)
Engine RPM
505@1200
Dimensions & Tires
Wheelbase
85 inches 215 cm
Weight
4400 lbs 1995 kg
Front tire
25x4
Rear tire
40x6
Full dimensions and tires ...
Belt Pulley
Diameter
14 inches 35 cm
Width
6.5 inches 16 cm
RPM
654
Speed
2395 ft/min 730.00 meters/min
References
F-20 references literature
Farmall Tractor Model F-20 (MC-D 3075) published in 1932
International Tractors - The Line That Offers You A Choice published in 1933, by International Harvester
McCormick-Deering Tractors - Modern Agricultural Power published in 1933, by International Harvester

Engine

Engine Detail — 220.9 ci / 3.6 L

Manufacturer
International Harvester
Configuration
4-cylinder, liquid-cooled vertical I-head
distillate
Displacement
220.9 ci 3.6 L
Bore/Stroke
3.75x5.00 inches 95 x 127 mm
Rated RPM
1200
Firing order
1-3-4-2
Coolant capacity
40 qts (early) 37.9 L
29 qts (late) 27.4 L

Transmission

Transmission — 4 forward and 1 reverse sliding gear

Type
sliding gear
Gears
4 forward and 1 reverse
Clutch
279.4mm mechanical dry disc
F-20 sliding gear speeds

Dimensions

Farmall F-20 Tires
Ag front
25x4 (steel)
Ag rear
40x6 (steel)
42x12 (steel)
9.00x36
Dimensions
Wheelbase
85 inches 215 cm
Length
140 inches 355 cm
Width
86 inches 218 cm
Height (steering wheel)
67 inches 170 cm
Height (hood)
58 inches 147 cm
Weight
4400 lbs 1995 kg
Front tread
8.5 inches 21 cm
Rear tread
74 inches 187 cm
Rear tread
57 inches 144 cm *Narrow and Fairway model F-20

Tests

Tractor Tests
NTTL 221: kerosene 4-speed 2WD
NTTL 264: kerosene 4-speed 2WD
NTTL 276: kerosene 4-speed 2WD
Nebraska Tractor Test 221
Kerosene 4-speed 2WD April 3 - 16, 1934 Link: Nebraska Tractor Test 221 file
Belt power (max)
23.11 hp 17.2 kW
Belt fuel use (max)
2.2 gal/hour 8.3 l/hour
Drawbar performance
Max power
15.39 hp 11.5 kW
Gear 2 used for power test.
Max pull
2334 lbs 1058 kg
Gear 1 used for pull test.
Nebraska Tractor Test 264
Kerosene 4-speed 2WD July 20 - 29, 1936 Link: Nebraska Tractor Test 264 file
Belt power (max)
28.0 hp 20.9 kW
Belt fuel use (max)
3.1 gal/hour 11.7 l/hour
Drawbar performance
Max power
20.5 hp 15.3 kW
Gear 3 used for power test.
Max pull
2799 lbs 1269 kg
Gear 1 used for pull test.
Nebraska Tractor Test 276
Kerosene 4-speed 2WD November 5 - 12, 1936 Link: Nebraska Tractor Test 276 file
Belt power (max)
27.84 hp 20.8 kW
Belt fuel use (max)
2.8 gal/hour 10.6 l/hour
Drawbar performance
Max power
20.66 hp 15.4 kW
Gear 3 used for power test.
Max pull
2927 lbs 1327 kg
Gear 1 used for pull test.

Photos

Farmall F-20 on steel wheels.

Farmall F-20 on steel wheels.

Farmall F-20 on rubber tires.

Farmall F-20 on rubber tires.

Farmall F-20 on rubber tires.

Farmall F-20 on rubber tires.

Gray Farmall F-20.

Gray Farmall F-20.

High clearance Farmall F-20.

High clearance Farmall F-20.

Rear view of the Farmall F-20.

Rear view of the Farmall F-20.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Farmall F-20.

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours

Farmall F-20 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Farmall F-20.

Converted Equivalents:

Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS

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