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exploder exploaded bearings (or why to check bearings often) not 56k friendly

Discussion in 'Stock 1991 - 1994 Explorers' started by hoss_hanna, August 13, 2010.

^^Searches ExplorerForum.com^^
  1. hoss_hanna

    hoss_hanna Active Member

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    City, State:
    ft. smith, ar
    Year, Model & Trim Level:
    91 4x4, 93 XL, 01 mountie
    Here is the carnage from a bearing blowout, a friend borrowed my truck for a bit and when she brought it back she said the brakes were locking up.... wonder why?


    a few shots of the carnage after removing wheel

    [​IMG]

    [​IMG]

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    This shows how the entire assembly was riding on the ring

    [​IMG]

    [​IMG]


    notice something missing here?
    [​IMG]

    the inner brake pad was gone, totally MIA.... wonder why the brakes were sticking?
    [​IMG]


    had to cut the spline ring off
    [​IMG]

    shavings that were once the seal and a fine glittering of metal dust that was part of the bearings, spindle and other semi-important parts
    [​IMG]


    Spindle Damage

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    spline damage

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    All of this happened due to the spindle nuts backing off, a common problem with the first gen 4x4 explorers. the tiny pin on the inner nut shears off and looks as if it was never there allowing the outer nut to back off and causes everything to move out. One heck of a mess! be sure to check these every time u have the wheel off for any reason.
     
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  3. Paul Gagnon

    Paul Gagnon Poseur SUV Moderator Emeritus

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    Sherwood Park, Alberta eh?
    Year, Model & Trim Level:
    1992 XLT
    I have had this happen more than once. It is NOT caused by the little locating pin shearing off. The reason that it happens is because the lock ring key is too small and doesn't engage the keyway correctly. It digs into the threads of the spindle, allowing the spindle nut assembly to rock back and forth. Once this happens the outer spindle nut starts to work itself loose and if not caught in time eventually leads to the catastrophic failure you had.

    As a side note, your spindle is installed 20 degrees out. The keyway should be at the top.
     
  4. hoss_hanna

    hoss_hanna Active Member

    Joined:
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    City, State:
    ft. smith, ar
    Year, Model & Trim Level:
    91 4x4, 93 XL, 01 mountie
    maby it should have been at the top, it is now but ford put it where it was at the 20 deg out, i just put it up for ease of looking at things... and even if the lock ring key filled the full width of the keyway (which it does not, thanks ford) it still couldn't keep the nut from loosing without the stop pin, simple mechanics.... but either way as long as this post gets ppl to keep an eye on them im happy. u say tomato i say watermelon :)
     






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