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Question about Knuckle Surfaces

Discussion in '80-Series Tech' started by Lugboot, Feb 27, 2007.

  1. Lugboot

    Lugboot

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    We have the left end of the axle apart and a quick question on the condition of the knuckle--it's a little rough and slightly pitted--does it matter? Please take a look at the pics!

    BTW--something from La Brea Tar Pits came out of the diff. Yuck.

    And the slop in the knuckle was pretty disgusting.

    First pic is the front of the knuckle. Second pic is the back.

    Thanks!
    Left Knuckle Front.JPG Left Knuckle Rear.JPG
     
  2. treehugger

    treehugger

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  3. Grench

    Grench SILVER Star

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    I suppose, in theory, over time, those scratches could mess with the wipers. It isn't exacty a high velocity motion on them though. How fast can you turn the wheel? If you can feel any burs or divots, that might be something to be concerned about.

    IMHO YMMV
    I should put that in my sig line.
     
  4. Rookie2

    Rookie2

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    The bigger question is what caused it? I don't see how the felt wipers did this. Have your knuckle studs come loose before or some other similar problem?
     
  5. Lugboot

    Lugboot

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    I would hazard that neglect caused this. I'm betting this is the first axle job at 117000 miles. The knuckle studs weren't loose whiel I owned, but I've only owned it for a month and a half.

    The pitting isn't horrendous--just unsmooth. And if I could turn the wheel that fast, I think I'd be on my roof!

    Thanks for the replies--could we try to smooth it out at all or is it not worth it?
     
  6. Rookie2

    Rookie2

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    I don't recall seeing that before, but maybe I just wasn't look close enough. I don't think I'd worry about it enough to start sanding on it.
     
  7. e9999

    e9999 You want to do what...? Moderator

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    Probably just some griit stuck in the wipers

    just smooth it out / polish it a bit using fine grit paper or compound, should be fine if you use new wipers. Any pits will just fill out with grease or you could fill them out with epoxy etc if you're really anal.
    Not worth changing the entire axle housing, I suppose... :)
     
  8. cpg

    cpg

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    looks like a little corrosion on the unpainted steel . If you are in a area with lots of salt you can smooth it out clean it spray some paint on it. The only thing that rides on trhat surface is the wiper.
     
  9. cpg

    cpg

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    looks like a little corrosion on the unpainted steel . If you are in a area with lots of salt you can smooth it out clean it spray some paint on it. The only thing that rides on trhat surface is the wiper. Actually looking at the pick again where the wiper rides is clean and good. The exposed area has corrosion. Clean it and paint it.
     
  10. Tools R Us

    Tools R Us

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    X2 the wipers will wear most of the paint off, leaving some in the pits, making for a smoother sealing surface.