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Tractor · 2002Unverified

John Deere 6420

Name: John Deere 6420
Brand: John Deere

John Deere 6420 — Utility tractor · 94 hp. Reference specifications; pending source verification.

The John Deere 6420 is a tractor with a rated power output of approximately 94 hp, a mid-range figure for its class. It was produced from 2002 to 2006 and features a 4-cylinder turbocharged diesel liquid-cooled engine, paired with a hydrostatic transmission and four-wheel drive. The tractor's operating weight ranges from 10064 to 11110 pounds. It is suitable for operations spanning 200 to 800 acres.

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

Rated power

94 hp

Max power

77.5 kW

Weight

10064 to 11110 pounds

Catalogue coverage

Variants represented

Richest spec table

129 rows

Recorded power

94 hp

Transmissions

12-speed fully synchronized

Production years

2002-2006

Verified variants

1 linked source document displayed

Hover a source tag to verify

Overview

ManufacturerJohn DeereReference

Utility tractorReference

Built in Mannheim, Baden-Württemberg, GermanyReference

Original price$44,000 (2007)Reference

Two- or four-wheel driveReference

Steeringhydrostatic powerReference

Hydraulic wet disc brakesReference

Two-post ROPS. ConfortGard Cab optional.Reference

Variants

6420utility chassisReference

6420Llow-profile chassisReference

Engine

John Deere 4.5L 4-cyl dieselReference

Engine82.0 kWReference

Drawbar (tested)56.2 kWReference

John Deere PowerTech 4045HL070Reference

turbocharged dieselReference

4-cylinderReference

liquid-cooledReference

Displacement4.5 LReference

Bore/Stroke106 x 127 mmReference

EmissionsTier IReference

Power82.0 kWReference

Air cleanerdryReference

Rated RPM2300Reference

Idle RPM875-2510Reference

Operating RPM1000-2300Reference

Torque370.2 NmReference

Torque RPM1500Reference

Firing order1-3-4-2Reference

Starter volts12Reference

Starter power3.0 kWReference

Coolant capacity13.6 LReference

Intake valve clearance0.356 mmReference

Exhaust valve clearance0.457 mmReference

Oil capacity15.9 LReference

Oil change500 hReference

John Deere PowerTech 4045HL473Reference

Used a Denso High-Pressure Common Rail (HPCR) fuel injection system. Also engine model 4045HL475Reference

EmissionsTier IIReference

Idle RPM845-2465Reference

Torque469.2 NmReference

Max power77.5 kWReference

Power at rated engine speed70.3 kWReference

Max power56.2 kWReference

Transmission

12-speed fully synchronizedReference

16-speed partial power shiftReference

24-speed partial power shiftReference

infinitely variable transmissionReference

TransmissionJohn Deere SyncroPlusReference

Typefully synchronizedReference

Gears12 forward and 4 reverseReference

Clutchwet discReference

Oil capacity52.1 LReference

Oil typeJD HyGardReference

Three gears (1-3) plus reverse (R) in four ranges (A-D). Directional, gear, and range changes are synchronized and may be shifting while moving by using the clutch. Optional creeper adds an additional nine forward and three reverse speeds for a total of 21-forward and 7-reverse. The SyncroPlus Power Reverser adds a fourth gear in the place of reverse, and includes a left-hand reverser lever, for 16 forward and reverse speeds.Reference

TransmissionJohn Deere PowrQuadReference

Typepartial power shiftReference

Gears16 forward and reverseReference

Oil capacity49.0 LReference

Four gears (1-4) in four ranges (A-D) with reverser lever. Clutchless power shift between gears (1-4) and direction changes (power shuttle). Range shifts (A-D) are synchronized, and may be shifted while the tractor is moving by using the clutch. Optional creeper adds an additional twelve speeds for 28 forward and reverse. The PowrQuad uses a gear-shift lever while the PowrQuad Plus (cab tractors only) offers push-button gear shifting.Reference

TransmissionJohn Deere PowrQuad PlusReference

Gears24 forward and reverseReference

Oil capacity50.0 LReference

Four gears (1-4) in six ranges (A-F) with reverser lever. Push-button power shifting between gears (1-4) and power shuttle directional shifting using the reverser lever. Ranges (A-F) may be shifted on the move by using the clutch. Optional AutoQuad offers automatic gear shifting to match load.Reference

TransmissionJohn Deere IVTReference

Typeinfinitely variable transmissionReference

Gearsinfinite forward and reverseReference

Oil capacity60.0 LReference

Oil typeJD Hy-GardReference

Continuously-variable transmission with built-in creeper and left-hand reverser lever. Speed-adjusting dial sets the maximum speed for each band. Setting maximum speed of Band 1 to less than 2 KPH (1.3 MPH) engages creeper mode. Only available on cab tractors.Reference

PTO & Hydraulics

PTO (claimed)67.1 kWReference

PTO (tested)77.5 kWReference

Hydraulic system51.9 LReference

Hydraulic system60.2 LReference

Typeclosed center pressue flow compensatedReference

Capacity51.9 LReference

Capacity60.2 LReference

Pressure200.0 barReference

Valves4Reference

Pump flow94.6 lpmReference

Rear TypeIIReference

Rear lift2152 kgReference

Rear PTOindependentReference

Rear PTO Type540Reference

Rear PTO Type540/1000Reference

Engine RPM540@2124Reference

Engine RPM540@2143 (reversible)Reference

Engine RPM1000@2208Reference

Front PTOoptionalReference

Front PTO Type1000Reference

Engine RPM1000@2185Reference

Power at rated PTO speed71.6 kWReference

Capacities

Fuel185.1 LReference

Max capacity7999 kgReference

Dimensions

Wheelbase240 cmReference

Weight10064 to 11110 poundsReference

Front tire10.00-16Reference

Rear tire18.4-34 (2WD)Reference

Standard tires (ag)Front: 10.00-16. Rear: 18.4-34 (2WD)Reference

Standard tires (ag)Front: 13.6-24. Rear: 18.4-34 (4WD)Reference

Length413 cmReference

Min Width156 cmReference

Height249 cmReference

Clearance (front axle)58 cmReference

Clearance (front axle)45 cmReference

Front tread149 to 258 cmReference

Front tread151 to 201 cmReference

Rear tread160 to 230 cmReference

Shipping4565 kgReference

Shipping4751 kgReference

Operating5039 kgReference

Max front axle5300 kgReference

Max front axle5499 kgReference

Max rear axle6497 kgReference

6420 Serial Numbers

Location:Serial number plate on the right side of the tractor's main frame.Reference

Electrical

GroundnegativeReference

Charging systemalternatorReference

Charging amps90Reference

Charging amps115Reference

Charging amps150Reference

Battery volts12Reference

Battery AH110Reference

Battery AH154Reference

Test results

Diesel AutoQuad 24-speed 4WDJanuary 2002 - February 2002, Link: OCED Tractor Test 2007 fileReference

PTO performanceReference

Fuel use20.8 l/hourReference

Fuel use21.2 l/hourReference

Drawbar performanceReference

Max pull4497 kgReference

Speeds

With 18.4x30 R1 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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