John Deere 50

The John Deere 50 is a tractor produced by John Deere. It is equipped with a 190.4 ci 3.1 L engine. The rated power output is 31.20 hp 23.3 kW. Transmission: 6 forward and 1 reverse. Operating weight: 4855 lbs 2202 kg.

Overview

	1952 - 1956 Row-Crop tractor
1952 - 1956
Row-Crop tractor

Production
Manufacturer	John Deere
Row-Crop tractor
Built in Waterloo, Iowa, USA
Total built	32,574 (total)
	29,746 (gas)
	2,097 (all-fuel)
	731 (LP-gas)
Original price was $2,011 in 1954
The John Deere 50 was introduced to replace the model B. These new tractors offered a number of advancements including duplex carburetion, live Powr-Trol hydraulics, and a fully-independent PTO.

John Deere 50 Transmission
6-speed unsynchronized gear
Transmission details ...

John Deere 50 Power
Belt (claimed)	30.97 hp 23.1 kW
Plows	2
Drawbar (tested)	28.11 hp 21.0 kW
Belt (tested)	31.20 hp 23.3 kW
Performance test details ...

Mechanical
Two-wheel drive
Steering	manual
	power *Power steering became an option in 1954.
Expanding shoe brakes
Open operator station with padded seat.

Hydraulics
Type	open center
Pressure	930 psi 64.1 bar
Pump flow	8.9 gpm 33.7 lpm

Power Take-off (PTO)
Rear PTO	independent OptOptional
Rear PTO Type	532

Dimensions & Tires
Wheelbase	90 inches 228 cm
Weight	4855 lbs 2202 kg
Front tire	5.50-16
Rear tire	10-38
Full dimensions and tires ...

Belt Pulley
Diameter	9.7 inches 24 cm
Width	7.25 inches 18 cm
RPM	1250
Speed	3,170 ft/min 966.22 meters/min

Electrical
Ground	Positive
Charging system	generator
Batteries	2
Battery volts	6
Battery AH	85

References
The First Numbered Series of John Deere Tractors published in 2004, by Hain Publishing
Highlights of the new John Deere 50 and 60 Tractors published in 1952
Tractors 1918-1976 published by John Deere*
50 & 60 General-Purpose Tractors published in 1952, by John Deere
General-Purpose Tractors published in 1953, by John Deere
Facts About John Deere Tractor Wholesale Prices 1935-1961
*Publication contains known errors.

Engine

Engine options
John Deere 3.1L 2-cyl gasoline
John Deere 3.1L 2-cyl all-fuel
John Deere 3.1L 2-cyl LP gas

Engine Detail — 190.4 ci / 3.1 L Gasoline

Manufacturer	John Deere
Fuel Type	Gasoline
Configuration	2-cylinder, liquid-cooled
Displacement	190.4 ci 3.1 L
Bore/Stroke	4.6875x5.50 inches 119 x 140 mm
Air cleaner	oil bath
Rated RPM	1250
Firing order	1-2
Starter volts	12
Coolant capacity	23 qts*Early, non-pressurized system. 21.8 L
	19 qts 18.0 L

Engine Detail — 190.4 ci / 3.1 L

Manufacturer	John Deere
Configuration	2-cylinder, liquid-cooled
all-fuel
Displacement	190.4 ci 3.1 L
Bore/Stroke	4.6875x5.50 inches 119 x 140 mm
Air cleaner	oil bath
Compression	5.35:1
Rated RPM	1250
Firing order	1-2
Starter volts	12

Engine Detail — 190.4 ci / 3.1 L LP Gas

Manufacturer	John Deere
Fuel Type	LP gas
Configuration	2-cylinder, liquid-cooled
Displacement	190.4 ci 3.1 L
Bore/Stroke	4.6875x5.50 inches 119 x 140 mm
Air cleaner	oil bath
Compression	8:1
Rated RPM	1250
Firing order	1-2
Starter volts	12

Transmission

Transmission — 6 forward and 1 reverse unsynchronized gear

Type	unsynchronized gear
Gears	6 forward and 1 reverse
Clutch	dry disc

Dimensions

John Deere 50 Tires
Ag front	5.50-16
Ag rear	10-38

Dimensions
Wheelbase	90 inches 228 cm
Length	132.75 inches 337 cm
Width	86.625 inches 220 cm
Height	59.825 inches 151 cm
Operating weight	4855 lbs*Gasoline tractor with cast 11-38 rear wheels. 2202 kg
Ballasted weight	5439 lbs*With fluid in rear tires. 2467 kg
Front tread	7.3/11.2 inches 18/28 cm
Rear tread	56 to 88 inches 142 to 223 cm

Tests

Tractor Tests
NTTL 486: gasoline 6-speed 2WD
NTTL 507: tractor fuel 6-speed 2WD
NTTL 540: LP gas 6-speed 2WD

Nebraska Tractor Test 486
Gasoline 6-speed 2WD October 15 - 22, 1952 Link: Nebraska Tractor Test 486 file
Belt power (max)	30.35 hp 22.6 kW
Belt fuel use (max)	2.8 gal/hour 10.6 l/hour
Drawbar performance
Max power	27.07 hp 20.2 kW
Gear 4 used for power test.
Max pull	3,504 lbs 1589 kg
Gear 1 used for pull test.

Nebraska Tractor Test 507
Tractor fuel 6-speed 2WD September 25 - October 2, 1953 Link: Nebraska Tractor Test 507 file
Belt power (max)	24.83 hp 18.5 kW
Belt fuel use (max)	2.5 gal/hour 9.5 l/hour
Drawbar performance
Max power	22.45 hp 16.7 kW
Gear 3 used for power test.
Max pull	3,583 lbs 1625 kg
Gear 1 used for pull test.

Nebraska Tractor Test 540
LP gas 6-speed 2WD May 9 - 13, 1955 Link: Nebraska Tractor Test 540 file
Belt power (max)	31.20 hp 23.3 kW
Belt fuel use (max)	3.6 gal/hour 13.6 l/hour
Drawbar performance
Max power	28.11 hp 21.0 kW
Gear 4 used for power test.
Max pull	3,466 lbs 1572 kg
Gear 1 used for pull test.