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John Deere 6420S Specifications

John Deere 6420S Engine

Engine Model ................. John Deere 4045T 4VCR
Engine Type ................. 4-Stroke, 4-cylinder turbocharged diesel
Number of Cylinders ................. 4
Displacement, cu in (L) ................. 276.4 (4.50)
Engine Bore, in (mm) ................. 4.19 (106.0)
Engine Stroke, in (mm) ................. 5.00 (127.0)
Aspiration ................. Turbocharged
Rated Engine Power, hp (kW) ................. 120.7 (90.1)
Rated Engine Speed, rpm ................. 2100
Operating Speed Range, rpm ................. 1300-2300
Idle Speed Range, rpm ................. 845-2465
Maximum Torque, Nm (lb-ft) ................. 457 (338)
Torque Speed, rpm ................. 1700
Firing Order ................. 1-3-4-2
Fuel System ................. High-pressure common rail injection
Air Cleaner ................. Dry element
Emissions Level ................. Tier 3
Valve Clearance (Intake), in (mm) ................. 0.014 (0.356)
Valve Clearance (Exhaust), in (mm) ................. 0.018 (0.457)
Fuel Tank Capacity, gal (L) ................. 48.9 (185.0)
Oil Capacity, qts (L) ................. 16.9 (16.0)
Coolant Capacity, qts (L) ................. 13.6 (14.4)
Electrical System Rating, Volts ................. 12
Charging System ................. Alternator
Alternator Rating, Amps ................. 115/150

Power Take-Off

PTO Operational Type ................. Independent
PTO Horsepower, hp (kW) ................. 91.2 (68.1)
PTO Clutch ................. Hydraulic
PTO Speed, rpm ................. 540/1000
Rear PTO / Engine Speed, rpm ................. 540/2124
Rear PTO / Engine Speed, rpm ................. 1000/2208

John Deere 6420S Transmission

Transmission Type ................. PowrQuad Plus
Gearbox Type ................. 24F/24R, partial powershift
Number of Forward Gears ................. 24
Number of Reverse Gears ................. 24
Clutch Type ................. Wet disc
Maximum Forward Speed, mph (kph) ................. 25.0 (40.2)
Maximum Reverse Speed, mph (kph) ................. 25.0 (40.2)

Transmission Type ................. AutoQuad Plus
Gearbox Type ................. 24F/24R, partial power shift
Number of Forward Gears ................. 24
Number of Reverse Gears ................. 24
Clutch Type ................. Wet disc
Maximum Forward Speed, mph (kph) ................. 31.1 (50.0)
Maximum Reverse Speed, mph (kph) ................. 31.1 (50.0)

Transmission Type ................. AutoPowr
Gearbox Type ................. Infinitely Variable Transmission (IVT)
Number of Forward/Reverse Gears ................. Infinite forward and reverse
Maximum Forward Speed, mph (kph) ................. 31.0 (49.9)
Maximum Reverse Speed, mph (kph) ................. 31.0 (49.9)

JD 6420S Wheels and Tires

Drive Wheels ................. 4WD 4x4
Steering Configuration ................. Front Steer
Steering System ................. Hydrostatic power
Brakes Type ................. Hydraulic wet disc
Front Tire Size ................. 16.9R24
Rear Tire Size ................. 18.4R38

John Deere 6420S Hydraulics and Hitch

Hydraulic System Type ................. Closed-center with load-sensing control
Hydraulic Pump Type ................. Axial piston pump
Implement Pump Flow, gpm (Lpm) ................. 25.4 (96.0)
Hydraulic Pressure, bar (psi) ................. 200 (2900)
Number of Standard Remote Valves ................. 4
3-Point Hitch Category ................. 3N
Draft Sensing or Lift Control ................. Load and depth control with electronic lower-link sensing
Standard Lift Capacity at lift pin, lb (kg) ................. 12980 (5900)

JD 6420S Dimensions and Weight

Wheelbase, in (mm) ................. 94.5 (2400)
Length, in (mm) ................. 169 (4290)
Height, in (mm) ................. 108 (2740)
Overall Width, in (mm) ................. 91.2 (2310)
Ground Clearance, in (mm) ................. 20.5 (520)
Turning Radius, in (mm) ................. 174 (4410)
Weight, lb (kg) ................. 10450 (4750)

JOHN DEERE TRACTORS ATTACHMENTS
1023E	2025R	2210	2520	3032E
3046R	3520	4066R	4105	4200
4320	4400	4520	4600	4720
430	420	455	X300	X350
X485	X500	X590	X700	X738

JOHN DEERE TRACTORS TROUBLESHOOTING
2640	3040	3310	3650	4100
5050D	5090R	5410	6105R	7200R
E130	L111	LA110	LT155	X300R