John Deere 820 tractor specifications

1956 - 1958

1956 - 1958 Two-Cylinder 20 SeriesStandard-tread tractor

Production

Production Manufacturer:John Deere
Type:Standard-tread tractor
Factory:Waterloo, Iowa, USA
Total built:7,080
The early model 820 "Green Dash" tractors were little-changed from the previous model 80. in 1957, for the 1958 production year, the improved 820 "Black Dash" tractors appeared with a number of modifications and more horsepower.

John Deere 820 Power

John Deere 820 Power Belt (claimed):67 hp
50.0 kW (Green Dash)
75 hp
55.9 kW (Black Dash)
Plows:5-6
Drawbar (tested):67.15 hp
50.1 kW
Belt (tested):72.82 hp
54.3 kW
power test details ...

1956 - 1958

Two-Cylinder 20 Series

Standard-tread tractor

Nebraska Tractor Test 632

Nebraska Tractor Test 632
Diesel 6-speed 2WD October 14 - 18, 1957 Link: Nebraska Tractor Test 632 file
Belt power (max):	72.82 hp 54.3 kW
Belt fuel use (max):	4.2 gal/hour 15.9 l/hour
Drawbar performance
Max power:	67.15 hp 50.1 kW
Gear 3 used for power test.
Max pull:	8,667 lbs 3931 kg
Gear 1 used for pull test.

John Deere 820 Engine

John Deere 820 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 ...

1956 - 1958

Two-Cylinder 20 Series

Standard-tread tractor

Engine Detail

Engine Detail
John Deere
diesel
2-cylinder
liquid-cooled
Displacement:	470.7 ci 7.7 L
Bore/Stroke:	6.125x8.00 inches 156 x 203 mm
Air cleaner:	oil bath
Rated RPM:	1125
Firing order:	1-2
Starter type:	gasoline pony motor
Coolant capacity:	8 qts 7.6 L

Mechanical

Mechanical Chassis:4x2 2WD
Steering:manual
power optional
Cab:Open operator station. Steel cab optional.
Transmission:6-speed unsynchronized gear
Transmission details ...

1956 - 1958

Two-Cylinder 20 Series

Standard-tread tractor

Transmission

Transmission
Manufacturer:	John Deere
Type:	unsynchronized gear
Gears:	6 forward and 1 reverse
Clutch:	9-inch dry disc
Optional low-speed first gear was 1.75 MPH.

Speeds

Speeds
With 15-34 rear tires.

Hydraulics

Hydraulics Type:Powr-Trol
Valves:1

Power Take-off (PTO)

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

Dimensions & Tires

Dimensions & Tires Wheelbase:85.25 inches
216 cm
Weight:7850 to 8600 pounds
Front tire:7.50-18
Rear tire:15-34
Full dimensions and tires ...

1956 - 1958

Two-Cylinder 20 Series

Standard-tread tractor

John Deere 820 Tires

John Deere 820 Tires
Ag front:	7.50-18
Ag rear:	15-34
Ag rear:	14-34
	18-26

Dimensions

Dimensions
Wheelbase:	85.25 inches 216 cm
Length:	142.75 inches 362 cm
Width:	79.5 inches 201 cm
Height:	81 inches 205 cm
Front tread:	56.5 to 63 inches 143 to 160 cm
Rear tread:	64.5/68.5 inches 163/173 cm

John Deere 820 Weight

John Deere 820 Weight
Shipping:	7,850 lbs 3560 kg
Operating:	8,600 lbs 3900 kg
Ballasted:	12,000 lbs 5443 kg

820 Serial Numbers

820 Serial Numbers photo of 820 serial number
1956:8000000 (green-dash)
1957:8200565 (green-dash)
1957:8203100 (black-dash)
1958:8203850 (black-dash)
Final:8207080 (black-dash)

how to read serial numbers...