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Thread: front wheel bearing change on 1979 GMC Sierra 4x4

  1. #1
    Junior Member
    Join Date
    Jun 2011

    front wheel bearing change on 1979 GMC Sierra 4x4

    cant figure out how to get the superwinch lockout taken apart to remove the brake rotor and get the bearings changed, if anyone has any tips or info that could help please let me know, thanks.

  2. #2
    Full Member
    Join Date
    Feb 2011
    remove the allen bolts aroiund the outside of the cover and take off chrome cover. there will be a snap ring inside that may be covered with grease and hard to see. it just snaps out followed by the gears.

  3. #3
    Senior Member greencamaro1981's Avatar
    Join Date
    Feb 2011
    bozeman mt
    pull brake caliper
    remove 6 allens cover and hub switch
    snap ring (it stinks but possible)
    nut (44mm)
    the lock ring (just pulls out)
    other nut
    brake rotor and hub assembly put hub on face and pull axle seal and inspect race reverse to install

  4. #4
    Senior Member Oldmech's Avatar
    Join Date
    Jan 2010
    nut is 44 mm?? or is it the one with 4 notches in it?
    either way.. make sure to get the snap ring out first.. outer nut comes off, then theres a lock ring filled with holes that fits over a stud on the inner nut.. pop that out,then take the inner nut off.. slide the rotor assy off the axle stub, the outer bearing will fall out along with the washer, the inner bearing is retained by the grease seal. the races can be driven out with a long punch. Clean the entire thing up well, use a driver to replace the races, pack the bearings well with new grease making sure the grease is forced clear through the bearing.
    Dont over tighten the first nut when you re install it. snug it up gently, and spin the rotor assy a few times. you want it to be "tight" without causing drag if that makes sense?

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