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     Field Guide to John Deere Tractors
    Field Guide to John Deere Tractors

    John Deere 8640

    John Deere 8640 tractor photo
    1979 - 1982   Iron Horses Series
    Four-wheel Drive (4WD) tractor
    Previous model:John Deere 8630
    Next model:John Deere 8650
    Smaller:John Deere 8440




     

    Production:

    Manufacturer:John Deere
    Factory:Waterloo, Iowa, USA
    Original price (USD):$80,000 (1982)
     

    John Deere 8640 Engine:

       John Deere 10.1L 6-cyl diesel
    full engine details ...
     

    Capacity:

    Fuel:214 gal [810.0 L]
    Hydraulic system:36 gal [136.3 L]
     

    3-Point Hitch:

    Rear Type:III,IIIN
    Rear lift:8,545 lbs [3876 kg]
     

    Power Take-off (PTO):

    Rear PTO:independent
    Rear RPMs:1000
    Engine RPMs:1000@2100
     

    Dimensions & Tires:

    Wheelbase:125 inches [317 cm]
    Weight:28,270 lbs [12823 kg]
    Front tire:18.4-34
    Rear tire:18.4-34
    full dimensions and tires ...
     

    8640 Serial Numbers:

    Location:On the tractor transmission case, rear.
    photo of 8640 serial number

    1979: 1500
    1980: 3198
    1981: 5704
    1982: 7960

    how to read serial numbers...

     

    John Deere 8640 Power:

    Engine:275 hp [205.1 kW]
    PTO (claimed):225 hp [167.8 kW]
    Drawbar (tested):203.34 hp [151.6 kW]
    PTO (tested):228.75 hp [170.6 kW]
    power test details ...
     

    Mechanical:

    Chassis:4x4 articulated 4WD
    Steering:hydrostatic power
    Brakes:hydraulic wet disc
    Cab:Cab standard
     

    Hydraulics:

    Type:closed center
    Capacity:36 gal [136.3 L]
    Valves:2
    Pump flow:33 gpm [124.9 lpm]
     

    Electrical:

    Ground:negative
    Charging system:alternator
    Charging amps:90
     

    Battery:

    Number:2
    Cold-cranking amps:975
    Volts:6
     

    Page information:

    Last update:March 2, 2012
    Copyright:Copyright 2012 TractorData LLC
    Contact:Peter@TractorData.com
    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.