john deere 6420

2002 - 2006

Utility tractor

Utility tractor

12-speed fully synchronized

16-speed partial power shift

24-speed partial power shift

infinitely variable transmission

Transmission

John Deere SyncroPlus

Type

fully synchronized

Gears

12 forward and 4 reverse

Clutch

wet disc

Oil capacity

55 qts 52.1 L

Oil type

JD HyGard

JD HyGard

JD HyGard

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.

With 18.4x30 R1 rear tires.

Transmission

John Deere PowrQuad

Type

partial power shift

Gears

16 forward and reverse

Clutch

wet disc

Oil capacity

51.8 qts 49.0 L

Oil type

JD HyGard

JD HyGard

JD HyGard

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.

With 18.4x30 R1 rear tires.

Transmission

John Deere PowrQuad Plus

Type

partial power shift

Gears

24 forward and reverse

Clutch

wet disc

Oil capacity

52.8 qts 50.0 L

Oil type

JD HyGard

JD HyGard

JD HyGard

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.

With 18.4x30 R1 rear tires.

Transmission

John Deere IVT

Type

infinitely variable transmission

Gears

infinite forward and reverse

Oil capacity

63.4 qts 60.0 L

Oil type

JD Hy-Gard

JD Hy-Gard

JD Hy-Gard

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.