General informations and Service Manual
Make
John Deere
Model
8420
Company country
United states
Production years
From 2002 Until 2005
Tractor type
Row Crop tractor
Fuel
diesel
Price
-
Total build
-
Service repair manual John Deere 8420 Manual
Dimensions, weight and tires specs
AG front tires
16.9R30
AG rear tires
18.4R46
Weight
21,650 lbs or 9820 kg
Length
211.9 inches [538 cm]
Width
-
Height
122.2 inches [310 cm]
Wheelbase
118.9 inches [302 cm]
Ground clearance
-
Front tread size
60 to 80 inches
Horsepower and engine specs
Engine size
496 ci or 8.1 L
Number of cylinders
6 cylinders
Horsepower
314 hp or 234.1 kW
Power RPM
2200 (rpm)
Engine torque
-
Engine torque RPM
-
Fuel type
diesel
Fuel injection system
electronic high-pressure common rail (HPCR)
Fuel tank capacity
160 gal or 605.6 L
Compression ratio
16.5:1
Bore stroke
4.56x5.06 inches or (116 x 129 mm)
Oil tank capacity
28.5 qts or 27.0 L
Oil change frequency
250 h
Coolant tank capacity
35.9 qts or 34.0 L
Battery and electrical specs
Number of batteries
2
Battery voltage
12 V
Battery cold cranking Amps
925
Electric ground force
negative
Electric charging system
alternator
Electric charging Amps
150 amps
Engine starter volts
12 V
Parts And Accessories John Deere 8420 Parts
Clutch and transmission specs
Transmission system
John Deere PowerShift
Transmission type
full power shift
Transmission gears
16 forward and 4 reverse
Clutch system
hydraulic wet disc
Oil tank capacity
148 qts or 140.1 L
Mechanical and cab specs
Wheel drive
4x4 MFWD 4WD
Steering system
hydrostatic power
Braking system
hydraulic wet disc
Cabin type
Cab standard
Hydraulic specs
Hydraulic system
closed center pressure-flow compensated
Number of valves
4 to 5
SVC flow rate
30 gpm or 113.6 lpm
Hydraulic tank capacity
37 gal or 140.0 L
Hydraulic pressure
2900 psi or 200.0 bar
Hydraulic max flow
33.5 gpm or 126.8 lpm
Drawbar specs
Drawbar real power
207.49 hp or 154.7 kW
Drawbar fuel consumption
13.6 gal/hour or 51.5 l/hour
Max drawbar pull
29,964 lbs or 13591 kg
Power take-off (PTO) specs
PTO claimed power
235 hp or 175.2 kW
PTO real power
235.45 hp or 175.6 kW
PTO engine @RPM
540@1975 (rpm)
PTO clutch system
hydraulic wet discs
Rear PTO system
independent
Rear PTO RPM
1000 (rpm)
Front PTO system
-
PTO fuel consumption
13.7 gal/hour or 51.9 l/hour
3 point hitch specs
Hitch control system
-
Rear hitch
III/IIIN
Rear hitch lift
15180 lbs or 6885 kg
Front hitch
IIIN
Front hitch lift
11000 lbs or 4989 kg
Detailed review of John Deere 8420
John Deere produced its 8420 farm tractor model From 2002 Until 2005 in United states with a Cab standard cabin. service repair manual mechanical and electrical here
