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    John Deere 8420

    John Deere 8420 tractor photo
    2002 - 2005   8020 Series
    Row-Crop tractor
    Previous model:John Deere 8410
    Next model:John Deere 8430
    Larger:John Deere 8520
    Smaller:John Deere 8320



    Manufacturer:John Deere
    Factory:Waterloo, Iowa, USA


    8420:wheeled tractor

    John Deere 8420 Engine:

       John Deere 8.1L 6-cyl diesel
    full engine details ...


    Fuel:160 gal [605.6 L]
    Hydraulic system:37 gal [140.0 L]
     39.6 gal [149.9 L] (ILS)
    Front hubs:3.6 qts [3.4 L]
     4.2 qts [4.0 L] (ILS)
    Front diff.:14.2 qts [13.4 L]

    3-Point Hitch:

    Rear Type:III,IIIN
    Rear lift:15,180 lbs [6885 kg]
     17,300 lbs [7847 kg] (optional)
    Front Hitch:optional
    Front lift:11,000 lbs [4989 kg]

    Power Take-off (PTO):

    Rear PTO:independent
    Clutch:hydraulic wet discs
    Rear RPMs:1000 (1.75)
     540/1000 (1.375 optional)
    Engine RPMs:540@1975

    Dimensions & Tires:

    Wheelbase:118.9 inches [302 cm]
     117.7 inches [298 cm] (ILS)
    Weight:21650 to 23780 pounds
    Front tire:16.9R30
    Rear tire:18.4R46
    full dimensions and tires ...

    8420 Serial Numbers:

    Location:Rear of tractor.
    2002: 1001
    2003: 10001
    2004: 20001
    2005: 30001

    how to read serial numbers...


    John Deere 8420 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]
    power test details ...


    Chassis:4x4 MFWD 4WD
     4x4 ILS MFWD 4WD (optional)
    Steering:hydrostatic power
    Brakes:hydraulic wet disc
    Cab:Cab standard.


    Type:closed center pressure-flow compensated (PFC)
    Capacity:37 gal [140.0 L]
     39.6 gal [149.9 L] (ILS)
    Pressure:2900 psi [200.0 bar]
    SCV flow:30 gpm [113.6 lpm]
    Total flow:33.5 gpm [126.8 lpm]
     42.5 gpm [160.9 lpm] (optional)


    Charging system:alternator
    Charging amps:150


    Cold-cranking amps:925

    Page information:

    Last update:December 20, 2012
    Copyright:Copyright 2012 TractorData LLC
    Copyright 2000-2012 - TractorData LLC. Notice: Every attempt is made to ensure the data listed is accurate. However, differences between sources, incomplete listings, errors, and data entry mistakes do occur. Consult official literature from the manufacturer before attempting any service or repair.