John Deere G Unstyled

The John Deere G Unstyled is a tractor produced by John Deere. It is equipped with a 412.5 ci 6.8 L engine. Transmission: John Deere. Operating weight: 5000 lbs 2268 kg.

Fuel & Capacities

17 gal 64.3 L

Transmission

John Deere

Operating Weight

5000 lbs 2268 kg

Overview

	1937 - 1953 Model year 1937-19411942-19481948-1953 Two-Cylinder Letter SeriesRow-Crop tractor Two-Cylinder Letter Series Row-Crop tractor

Production
Manufacturer	John Deere
Row-Crop tractor
Built in Waterloo, Iowa, USA
Total built	10,684 (Unstyled)
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.

John Deere G Engine
John Deere 6.8L 2-cyl all fuel
Fuel tank	17 gal 64.3 L
Aux. fuel	1.5 gal 5.7 L
Engine details ...

John Deere G Transmission
4-speed gear
Transmission details ...

John Deere G Power
Drawbar (claimed)	20.70 hp 15.4 kW
Belt (claimed)	31.44 hp 23.4 kW
Plows	3 (14-inch)
Drawbar (tested)	27.63 hp 20.6 kW
Belt (tested)	35.91 hp 26.8 kW
Performance test details ...

Mechanical
Two-wheel drive
Manual steering
Open operator station.

Power Take-off (PTO)
Rear PTO	transmission
Rear PTO Type	540 (1.75)

Dimensions & Tires
Weight	5000 lbs 2268 kg
Front tire	24x5
Rear tire	51.5x7
Full dimensions and tires ...

References

The John Deere Unstyled Letter Series by J.R. Hobbs
Tractors 1918-1976 published by John Deere*
General-Purpose Tractors published in 1938, by John Deere
General-Purpose Tractors published in 1940, by John Deere
General Catalog published in 1940, by John Deere
*Publication contains known errors.

Engine

Engine Detail — 412.5 ci / 6.8 L

Manufacturer	John Deere
Configuration	2-cylinder, liquid-cooled
all fuel
Displacement	412.5 ci 6.8 L
Bore/Stroke	6.125x7.00 inches 156 x 178 mm
Compression	4.2:1
Rated RPM	975
Firing order	1-2
Starter type	hand crank
Oil capacity	11 qts 10.4 L
Coolant capacity	44 qts 41.6 L

Transmission

Transmission — John Deere

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

Dimensions

John Deere G Tires
Ag front	24x5
	6.00-16
Ag rear	51.5x7
	12x38 (13.6)

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

Tests

Nebraska Tractor Test 295
Distillate 4-speed 2WD November 15 - 19, 1937 Link: Nebraska Tractor Test 295 file
Belt power (max)	35.91 hp 26.8 kW
Belt fuel use (max)	3.9 gal/hour 14.8 l/hour
Drawbar performance
Max power	27.63 hp 20.6 kW
Gear 2 used for power test.
Max pull	4,085 lbs 1852 kg
Gear 1 used for pull test.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for John Deere G Unstyled.

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