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John Deere G Unstyled

John Deere G Unstyled tractor
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The John Deere G Unstyled is a row-crop tractor produced from 1937 to 1953 by John Deere in Waterloo, Iowa, USA. It features a 6.8L two-cylinder liquid-cooled engine with a 4-speed gear transmission and dry disc clutch. The tractor has a claimed drawbar power of 20.70 hp and belt power of 31.44 hp, with tested drawbar and belt powers higher. It is a two-wheel drive tractor with manual steering and an open operator station. The tractor has a rear PTO with a 540 rpm type. It was built in large numbers with 10,684 unstyled units produced. The model underwent radiator improvements early in production to address overheating issues.
John Deere GJohn Deere G Unstyledtractor specificationsfarm tractor6.8L engine4-speed transmissionrow-crop tractor
Power-
Founded-
ModelG

Technical Specifications

Detailed specifications and technical data for John Deere G Unstyled

Power

Plows:3 (14-inch)
Belt (tested):35.91 hp (26.8 kW)
Belt (claimed):31.44 hp (23.4 kW)
Drawbar (tested):27.63 hp (20.6 kW)
Drawbar (claimed):20.70 hp (15.4 kW)

Tires

Rear tire:51.5x7, 12x38 (13.6)
Front tire:24x5, 6.00-16

Engine

Type:2-cylinder, liquid-cooled, all fuel
Model:John Deere 6.8L 2-cyl all fuel
Aux. fuel:1.5 gal (5.7 L)
Fuel tank:17 gal (64.3 L)
Rated RPM:975
Bore/Stroke:6.125x7.00 inches (156 x 178 mm)
Compression:4.2:1
Displacement:412.5 ci (6.8 L)
Firing order:1-2
Oil capacity:11 qts (10.4 L)
Starter type:hand crank
Coolant capacity:44 qts (41.6 L)

Dimensions

Width:61.5 inches (156 cm)
Height:84 inches (213 cm)
Length:135 inches (342 cm)
Operating weight:5000 lbs (2268 kg)

Mechanical

Drive:Two-wheel drive
Steering:Manual steering
Operator station:Open operator station

Production

Type:Row-Crop tractor
Notes:The first 3,250 John Deere model G tractors (serial number 1000 through 4250) are known as "low radiator" Gs. Overheating issues resulted in a production change to a larger radiator beginning with serial number 4251. Many of the original tractors were refitted with the new radiator.
Built in:Waterloo, Iowa, USA
Total built:10,684 (Unstyled)
Manufacturer:John Deere
Years produced:1937 - 1953

Transmission

Type:gear
Gears:4 forward and 1 reverse
Clutch:dry disc
Manufacturer:John Deere

Serial Numbers

1938:1000 (G Unstyled)
1939:7734 (G Unstyled)
1940:9321 (G Unstyled)
1941:10489 (G Unstyled)
1942:11561 (G Unstyled)
1944:None
1942 GM:13000 (GM)
1943 GM:13418 (GM)
1945 GM:13748 (GM)
1946 GM:15780 (GM)
1947 GM:18553 (GM)
Final GM:22112 (GM)
1948 Late Styled:26000 (G Late Styled)
1949 Late Styled:32457 (G Late Styled)
1950 Late Styled:39161 (G Late Styled)
1951 Late Styled:46809 (G Late Styled)
1952 Late Styled:53479 (G Late Styled)
1953 Late Styled:63138 (G Late Styled)
1947 Early Styled:23000 (G Early Styled)
1948 Early Styled:25235 (G Early Styled)

Power Take-off (PTO)

Rear PTO:transmission
Rear PTO Type:540 (1.75)