John Deere R tractor specifications

1949 - 1954

1949 - 1954 Two-Cylinder Letter SeriesStandard-tread tractor

Series:

Series:R80 ↓

1955 - 1956

Standard-tread tractor

Production

Production
Manufacturer:	John Deere
Type:	Standard-tread tractor
Factory:	Waterloo, Iowa, USA
Total built:	3,485

John Deere 80 Power

John Deere 80 Power
Drawbar (claimed):	46.32 hp 34.5 kW
Belt (claimed):	57.49 hp 42.9 kW
Drawbar (tested):	60.36 hp 45.0 kW
Belt (tested):	65.33 hp 48.7 kW
power test details ...

John Deere 80 Engine

John Deere 80 Engine
John Deere 7.7L 2-cyl diesel
Fuel tank:	32.5 gal 123.0 L
Aux. fuel:	0.25 gal 0.9 L
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Steering:	manual
	power assist optional
Brakes:	mechanical expanding shoe
Cab:	Open operator station. Optional steel cab.
Transmission:	6-speed unsynchronized gear
Transmission details ...

Power Take-off (PTO)

Power Take-off (PTO)
Rear RPM:	540

Dimensions & Tires

Dimensions & Tires
Wheelbase:	85.5 inches 217 cm
Weight:	8300 lbs 3764 kg
Front tire:	7.50-18
Rear tire:	15-34
Full dimensions and tires ...

80 Serial Numbers

80 Serial Numbers
Location:	Serial number plate on the right side of the John Deere 80, ahead of the pulley and below the fuel filter.
photo of 80 serial number
1955:	8000001
1956:	8000776
Final:	8003500
how to read serial numbers...

Belt Pulley

Belt Pulley
Diameter:	12.2 inches 30 cm
Width:	9 inches 22 cm
RPM:	1125
Speed:	3599 ft/min 1096.98 meters/min

Electrical

Electrical
Ground:	positive
Battery volts:	6

Production

Production Manufacturer:John Deere
Type:Standard-tread tractor
Factory:Waterloo, Iowa, USA
Total built:21,293
Original price:$3650 (1954)
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.

John Deere R Power

John Deere R Power Drawbar (claimed):35 hp
26.1 kW
Belt (claimed):43 hp
32.1 kW
Plows:4 (14-inch)
Drawbar (tested):43.15 hp
32.2 kW
Belt (tested):48.58 hp
36.2 kW
power test details ...

1949 - 1954

Two-Cylinder Letter Series

Standard-tread tractor

Series:

Series:	R
	80 ↓

Nebraska Tractor Test 406

Nebraska Tractor Test 406
Diesel 5-speed 2WD April 19 - 28, 1949 Link: Nebraska Tractor Test 406 file
Belt power (max):	48.58 hp 36.2 kW
Belt fuel use (max):	2.8 gal/hour 10.6 l/hour
Drawbar performance
Max power:	43.15 hp 32.2 kW
Gear 3 used for power test.
Max pull:	6644 lbs 3013 kg
Gear 1 used for pull test.

John Deere R Engine

John Deere R Engine John Deere 6.8L 2-cyl diesel Fuel tank:22 gal
83.3 L
Aux. fuel:1 gal
3.8 L
Engine details ...

1949 - 1954

Two-Cylinder Letter Series

Standard-tread tractor

Series:

Series:	R
	80 ↓

Engine Detail

Engine Detail
John Deere
diesel
2-cylinder
liquid-cooled
Displacement:	415.5 ci 6.8 L
Bore/Stroke:	5.75x8.00 inches 146 x 203 mm
Air cleaner:	oil bath
Compression:	16:1
Rated RPM:	1000
Firing order:	1-2
Starter type:	2-cylinder pony motor

Mechanical

Mechanical Chassis:4x2 2WD
Steering:manual
Brakes:mechanical drum
Cab:Open operator station.
Transmission:5-speed gear
Transmission details ...

1949 - 1954

Two-Cylinder Letter Series

Standard-tread tractor

Series:

Series:	R
	80 ↓

Transmission

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

Speeds

Speeds

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:live
Rear RPM:540

Dimensions & Tires

Dimensions & Tires Wheelbase:85.5 inches
217 cm
Weight:7400 to 7603 pounds
Front tire:7.50-18
Rear tire:14-34
Full dimensions and tires ...

1949 - 1954

Two-Cylinder Letter Series

Standard-tread tractor

Series:

Series:	R
	80 ↓

John Deere R Tires

John Deere R Tires
Ag front:	7.50-18
Ag rear:	14-34
	15-34
Ag front:	30x6 steel
Ag rear:	54x12 steel

Dimensions

Dimensions
Wheelbase:	85.5 inches 217 cm
Length:	147 inches 373 cm
Width:	79.5 inches 201 cm
Height:	78.125 inches 198 cm
Shiping weight:	7400 lbs 3356 kg
Operating weight:	7603 lbs 3448 kg

R Serial Numbers

R Serial Numbers Location:Right side of tractor above belt pulley.
photo of R serial number
1949:1000
1950:3541
1951:6505
1952:10745
1953:15720
1954:19485
Final:22293

how to read serial numbers...