John Deere
John Deere G Unstyled
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.
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) |
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