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Manufacturer-sourced values side by side. No performance equivalence or ranking is applied across different machine classes.

FeatureJohn Deere 4020TractorInternational Harvester 3688Tractor
Tractor TypeFarm TractorRow-Crop Tractor
Weight6340.0 kg5990.0 kg
Lift Capacity1720.0 kg—
Transmission TypeFull power shiftPartial power shift with cerametallic disc clutch
Length383.0 cm467.0 cm
Years Made1963-19721981-1985
Engine ModelJohn DeereInternational Harvester D436
Engine Type4-stroke, liquid-cooled, inline4-stroke, liquid-cooled, inline
Fuel TypeGasoline / LPGDiesel
Cylinders66
Displacement5930 cc7145 cc
Bore10.79 cm10.90 cm
Stroke10.79 cm12.70 cm
Rear PTO TypeIndependentIndependent
Rear PTO Speed540 /1000, 1000 RPM540 /1000 RPM
Front PTO TypeIndependent—
Front PTO Speed1000 rpm—
Compression RatioGas: 7.5:1LPG: 9.0:116.0:1
Battery12 V 75A12 V
StarterElectricElectric
Height198.0 cm284.0 cm
Wheelbase254.0 cm266.0 cm
Fuel Tank Capacity170.2 l189.3 l
Oil Capacity8.5 l13.2 l
Coolant Capacity22.7 l24.6 l
Transmission Oil Capacity64.4 l85.2 l
Hydraulic Capacity45.4 l85.2 l
Transmission ModelJohn Deere Power Shift—
Gears8 forward and 4 reverse16 forward and 8 reverse
Chassis4×2 2WD or 4×4 HFWD 4WD4×2 2WD or 4×4 MFWD 4WD
Max. Travel Speed7.9 km/h15.1 km/h
BrakesHydraulic wet discHydraulic wet disc
Drawbar CategoryIIII
Cabin TypeOpen operator station. Cabin was available as an option.Cab with heat and A/C
Steering TypePowerPower
Front TiresAg: 6.00-16 ; 7.50-18Ag: 11L-15
Rear TiresAg: 15.5-38 ; 18.4-34Ag: 18.4-34
Hydraulic TypeClosed centerOpen center
Total Flow68.1 LPM102.2 LPM
Working Pressure155.1 bar—
Valves12 to 4
Horsepower—84.3 kW
Pump Flow—68.1 LPM
Rated RPM—2400 RPM
Ground Clearance—33.0 cm
Hitch Type—Draft sensing
Steering Flow—45.4 LPM
Sourceheavyequipments.net archive (imported 2026-10)heavyequipments.net archive (imported 2026-10)
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Side-by-side specification comparisons generated from the manufacturer-sourced model files. · 7,051