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John Deere R

Manufacturer
Models
John Deere R
Years
1949-54
Info

The John Deere R, which went on sale in 1949, was the brand's first diesel tractor and John Deere's largest model. The engine was a 2-cylinder, very long-stroke, 6.8-liter flat (horizontal) cylinder design. Its power was measured at 48.58 horsepower at the pulley in tests conducted in Nebraska. The compression ratio (16:1) was quite high for its time. The engine was started with the help of a small 10-horsepower gasoline engine. The gasoline engine, in turn, had an electric starter. There were 5+1 gears, that is, one less than in the slightly smaller G models. For the first time in JD's history, the power take-off had its own clutch. The hydraulic pump was also located behind the PTO clutch, which caused this clutch to become overloaded.

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Technical data
ModelJohn Deere R
Options
Manufacturer nameJohn Deere
Imported to FinlandYes
Years1949-54
First year sold1949
Last year sold1954
Cyl/Turbo/Intercooler2
Displacement6808 cm³
Bore x stroke146,1×203,2 mm
Power48.6
Power speed1000
Rated power hp/rpm engine pulley48,6/1000
Gears5+1
Speeds in km/h3,4-18,5
Lift controlsmech.
PTO speeds540
Brakesdrum brakes
Steeringmech.
Front tyres 2WD7.50-18
Rear tyres 2WD14-34
Weight 2WD(3356) kg
Height with cab(198) cm
Length (2WD/4WD)373 cm
Wheelbase (2WD/4WD)217 cm
Fuel tank83+bens. 4 l
The data has been collected primarily from brochures. In some cases, sources contain conflicting information. In such cases, we have attempted to select the most reliable information. There is particularly significant variation in speed data, which varies depending on factors such as tire size. For tires, only the size most commonly used in Finland is listed. Other changes during the model history have been addressed in the text section. For the front axle lock, the Finnish term "hammaslukko" (gear lock) is used for all 100% locks.