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John Deere R

John Deere R tractor
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The John Deere R was produced from 1949 to 1954 as part of the Two-Cylinder Letter Series. It was John Deere's first diesel tractor and the first with a live PTO using a separate clutch. It is a standard-tread tractor built in Waterloo, Iowa, USA, with a total production of 21,293 units. The R features a 6.8L 2-cylinder liquid-cooled diesel engine, a 5-speed gear transmission, and mechanical drum brakes with manual steering. It has a wheelbase of 85.5 inches and weighs approximately 7400 to 7603 pounds. The tractor delivers about 43 hp estimated engine power and has a live rear PTO rated at 540 rpm.
John Deere Rtractorspecificationsenginetransmissiondimensionspowerfarm tractor
Power43 hp[B]
Founded1949 - 1954
ModelR

Technical Specifications

Detailed specifications and technical data for John Deere R

Power

Plows:4 (14-inch)
Belt (tested):48.58 hp (36.2 kW)
Belt (claimed):43 hp (32.1 kW)
Drawbar (tested):43.15 hp (32.2 kW)
Drawbar (claimed):35 hp (26.1 kW)

Engine

Type:John Deere 6.8L 2-cyl diesel
Cooling:liquid-cooled
Fuel tank:22 gal (83.3 L)
Rated RPM:1000
Air cleaner:oil bath
Bore/Stroke:5.75x8.00 inches (146 x 203 mm)
Displacement:415.5 ci (6.8 L)
Firing order:1-2
Starter type:2-cylinder pony motor
Coolant capacity:54.5 qts (51.6 L)
Compression ratio:16:1
Auxiliary fuel tank:1 gal (3.8 L)
Engine oil capacity:13 qts (12.3 L)

Dimensions

Width:79.5 inches (201 cm)
Height:78.125 inches (198 cm)
Length:147 inches (373 cm)
Rear tire:14-34, 15-34
Wheelbase:85.5 inches (217 cm)
Front tire:7.50-18
Steel wheels:Ag front 30x6 steel, Ag rear 54x12 steel
Shipping weight:7400 lbs (3356 kg)
Operating weight:7603 lbs (3448 kg)

Electrical

Ground:positive
Battery volts:6

Mechanical

Drive:Two-wheel drive
Brakes:Mechanical drum brakes
Steering:Manual steering
Operator station:Open operator station

Production

Type:Standard-tread tractor
Notes:The model R was John Deere's first diesel tractor. The R was the first John Deere tractor with a live PTO, which used a separate clutch.
Built in:Waterloo, Iowa, USA
Years made:1949 - 1954
Total built:21,293
Manufacturer:John Deere
Original price:$3,650 in 1954

Transmission

Type:gear
Gears:5 forward and 1 reverse
Notes:The tractor must be stopped and clutch used to shift gears.
Clutch:dry disc
Oil type:SAE 90
Oil capacity:9.5 qts (9.0 L)

Power Take-off (PTO)

Rear PTO:live
Rear PTO Type:540

Related Models

John Deere 80

Model:80