John Deere 8420: all source data

All 98 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.

Overview

Production
ManufacturerJohn Deere
(no label)Row-Crop tractor
(no label)Built in Waterloo, Iowa, USA
Engine
(no label)John Deere 8.1L 6-cyl diesel
Transmission
(no label)16-speed full power shift
Power
Engine (gross)284 hp | 211.8 kW
Engine (net)270 hp | 201.3 kW
Engine (max)314 hp | 234.1 kW
PTO (claimed)235 hp | 175.2 kW
Drawbar (tested)207.49 hp | 154.7 kW
PTO (tested)269.41 hp | 200.9 kW
Mechanical
(no label)Four-wheel drive
Steeringhydrostatic power
(no label)Hydraulic wet disc brakes
Trailer brakeshydraulic
(no label)Cab standard.
Capacity
Fuel160 gal | 605.6 L
Hydraulic system37 gal | 140.0 L
ILS Hydraulic system (ILS)39.6 gal | 149.9 L
Front hubs3.6 qts | 3.4 L
ILS Front hubs4.2 qts | 4.0 L
Front diff.14.2 qts | 13.4 L
Hydraulics
Typeclosed center pressure-flow compensated (PFC)
Capacity37 gal | 140.0 L
ILS Capacity (ILS)39.6 gal | 149.9 L
Pressure2900 psi | 200.0 bar
Valves4 to 5
SCV flow30 gpm | 113.6 lpm
Total flow33.5 gpm | 126.8 lpm
Total flow42.5 gpm | 160.9 lpm
Hitch
Rear TypeIII/IIIN
Rear lift15180 lbs | 6885 kg
Rear lift17300 lbs | 7847 kg
Front HitchIIIN
Front lift11000 lbs | 4989 kg
Pto
Rear PTOindependent
Clutchhydraulic wet discs
Rear PTO Type1000 (1.75)
Rear PTO Type540/1000 (1.375 optional)
Engine RPM540@1975
Engine RPM1000@2200
Dimensions
Wheelbase118.9 inches | 302 cm
Wheelbase117.7 inches (ILS) | 298 cm
Weight21650 to 23780 pounds
Front tire16.9R30
Rear tire18.4R46
Electrical
Groundnegative
Charging systemalternator
Charging amps150
Batteries2
Battery CCA925
Battery volts12

Engine

Engine detail
(no label)John Deere
(no label)turbocharged diesel
(no label)6-cylinder
(no label)liquid-cooled inline
Displacement496 ci | 8.1 L
Bore/Stroke4.56x5.06 inches | 116 x 129 mm
EmissionsTier II
Rated Power (net)270 hp | 201.3 kW
Rated Power (gross)284 hp | 211.8 kW
Maximum Power (net)300 hp | 223.7 kW
Maximum Power (gross)314 hp | 234.1 kW
Fuel systemelectronic high-pressure common rail (HPCR)
Air cleanerdry with secondary element
Compression16.5:1
Rated RPM2200
Idle RPM900-2300
Operating RPM1500-2200
Starter volts12
Coolant capacity (Coolant)35.9 qts | 34.0 L
Engine oil
Oil capacity28.5 qts | 27.0 L
Oil change250 h

Transmission

Transmission
TransmissionJohn Deere PowerShift
Typefull power shift
Gears16 forward and 4 reverse
Clutchhydraulic wet disc
Oil capacity148 qts | 140.1 L
Oil capacity158.4 qts (ILS) | 149.9 L
(no label)Full power shift transmission with single shift lever with display on cab corner post. Tractor begins in 7 (forward) and 2 (reverse) on start up. Clutch pedal may be used to pre-select a gear by holding clutch and pressing lever until desired gear is reached. Automatic PowerShift (APS) allows automated shifting to match load.

Dimensions

Tires
Ag front16.9R30
Ag rear18.4R46
Dimensions
Wheelbase118.9 inches | 302 cm
Wheelbase117.7 inches (ILS) | 298 cm
Length211.9 inches | 538 cm
Height (cab)122.2 inches | 310 cm
Front axle4WD
Front axleIndependent Link Suspension
Rack-and-pinion rear axle (Rack-and-pinion)4.331 by 118.5 inches | 110 by 3009 mm
Rack-and-pinion rear axle (Rack-and-pinion)4.724 by 118.5 inches | 119 by 3009 mm
4WD Front tread60 to 80 inches | 152 to 203 cm
ILS Front tread60 to 88 inches | 152 to 223 cm
Weight
Shipping21,650 lbs | 9820 kg
ILS Shipping (ILS)23,050 lbs | 10455 kg
Operating23,780 lbs (480/80R46 duals) | 10786 kg
Max Drawbar3,900 lbs (Cat 3 extended) | 1769 kg
Max Drawbar6,070 lbs (Cat 3 short) | 2753 kg
Max Drawbar10,000 lbs (Cat 4) | 4536 kg