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Tractor · 1956Unverified

John Deere 820

Name: John Deere 820
Brand: John Deere

John Deere 820 — Two-Cylinder 20 Series · 67 hp. Reference specifications; pending source verification.

The John Deere 820 is a tractor model with a rated output of 67 hp, positioning it in the middle of its class for power. Production of this model spanned the years 1956 to 1958. It is equipped with a 2-cylinder diesel liquid-cooled engine, which drives the tractor through a two-wheel drive system and a 6-speed gearbox. The listed weight of the John Deere 820 ranges from 7850 to 8600 pounds, and it is suited for tasks covering approximately 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

67 hp

Max power

50.1 kW

Weight

7850 to 8600 pounds

Catalogue coverage

Variants represented

Richest spec table

78 rows

Recorded power

67 hp

Transmissions

6-speed unsynchronized gear

Production years

1956-1958

Verified variants

1 linked source document displayed

Hover a source tag to verify

Overview

ManufacturerJohn DeereReference

Standard-tread tractorReference

Built in Waterloo, Iowa, USAReference

Total built7,080Reference

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.Reference

Two-wheel driveReference

Final drivesbull gearReference

SteeringmanualReference

Steeringpower optionalReference

Mechanical expanding shoe brakesReference

Open operator station. Steel cab optional.Reference

Engine

John Deere 7.7L 2-cyl dieselReference

Fuel tank123.0 LReference

Aux. fuel0.9 LReference

Belt (claimed)50.0 kWReference

Belt (claimed)56.4 kWReference

Plows5-6Reference

Drawbar (tested)50.1 kWReference

Belt (tested)54.3 kWReference

John DeereReference

dieselReference

2-cylinderReference

liquid-cooledReference

Displacement7.7 LReference

Bore/Stroke156 x 203 mmReference

Air cleaneroil bathReference

Rated RPM1125Reference

Firing order1-2Reference

Starter typegasoline pony motorReference

Coolant capacity7.6 LReference

Belt power (max)54.3 kWReference

Max power50.1 kWReference

Transmission

6-speed unsynchronized gearReference

ManufacturerJohn DeereReference

Typeunsynchronized gearReference

Gears6 forward and 1 reverseReference

Clutch9-inch dry discReference

Optional low-speed first gear was 1.75 MPH.Reference

PTO & Hydraulics

Typeopen centerReference

Valves1Reference

Rear PTOindependentReference

Rear PTO Type540 (1.375)Reference

Dimensions

Wheelbase216 cmReference

Weight7850 to 8600 poundsReference

Front tire7.50-18Reference

Rear tire15-34Reference

Ag front7.50-18Reference

Ag rear15-34Reference

Ag rear14-34Reference

Ag rear18-26Reference

Length362 cmReference

Width201 cmReference

Height205 cmReference

Front tread143 to 160 cmReference

Rear tread163/173 cmReference

Shipping3560 kgReference

Operating3900 kgReference

Ballasted5443 kgReference

820 Serial Numbers

19568000000 (green-dash)Reference

19578200565 (green-dash)Reference

19578203100 (black-dash)Reference

19588203850 (black-dash)Reference

Final8207080 (black-dash)Reference

FAQ: How to read a serial number table.Reference

Capacities

Diameter30 cmReference

Width22 cmReference

RPM1125Reference

Speed1097.28 meters/minReference

Electrical

GroundpositiveReference

Charging systemgeneratorReference

Battery volts6Reference

Test results

Diesel 6-speed 2WDOctober 14 - 18, 1957Link: Nebraska Tractor Test 632 fileReference

Belt fuel use (max)15.9 l/hourReference

Drawbar performanceReference

Gear 3 used for power test.Reference

Max pull3931 kgReference

Gear 1 used for pull test.Reference

Speeds

With 15-34 rear tires.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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