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  1. #1
    Senior Member Bohh's Avatar
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    Mysterious O-Ring

    Hi all,

    I was trying to adjust my headset today and while it was loose accidentally bumped the front wheel. Everything shifted upward and when I looked down I noticed a large O-ring that I hadn't seen before. I've looked at instruction manuals and everything and can't figure out where this goes. I see no grooves that it will fit in and when I put it in between the top cap and frame as pictured the head set doesn't move smoothly. Where does it go?











    Thanks,

    -Mike
    CAAD 9 - Ultegra Components (Frame Swap)
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  2. #2
    The Red Lantern Rev.Chuck's Avatar
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    Did you pull the tapered cap(the one with Cane Creek on it) off and make sure there is not a groove there? I remember an o-ring on it.
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  3. #3
    Senior Member Bohh's Avatar
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    I looked at the bottom of it, without taking it off and it's flat with no groove. It doesn't sit around the outside like in picture 4 does it?
    CAAD 9 - Ultegra Components (Frame Swap)
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  4. #4
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by Bohh View Post
    I looked at the bottom of it, without taking it off and it's flat with no groove. It doesn't sit around the outside like in picture 4 does it?
    Unlikely. It may sit in a groove against the steer tube. Grease and other liquids could make it swell. Pull the tapered cap off and look for a ring. If there is one and the ring is swollen, you'll need a new o-ring.
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  5. #5
    Senior Member Bohh's Avatar
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    I spoke with someone from CaneCreek and showed him the photos. He was very helpful. He said that that O-ring is most likely an extra O-ring that shouldn't be there and I should take it out and try and seat everything. I'll give that a shot.

    I can't get it around my head though that it would be an extra, how would it get in there? It worked fine before (with it in there I presume.) The only reason it came out is because I bumped the front wheel while everything is loose. What if I take it out and it's supposed to be in there somewhere? Could it be from deeper in the headset somehow?
    CAAD 9 - Ultegra Components (Frame Swap)
    Windsor Fens '07
    Univega Arrow Pace - Fixed Gear Conversion

  6. #6
    Fred-ish rogerstg's Avatar
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    Maybe it was on the outside of the assembly covering the small gap between the headset cover and the steerer tube. Sort of like a dust guard that you hadn't noticed.

  7. #7
    Senior Member Bohh's Avatar
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    That's what I'm leaning to right now. Is that a common thing to do/see?

    Below you can see the underside of the top cap. No grooves at all. The next photo shows what it looks like with everything but the O-Ring. I doubt that is correct. Next shows the o-ring in that space, like you say as a dust cover.





    CAAD 9 - Ultegra Components (Frame Swap)
    Windsor Fens '07
    Univega Arrow Pace - Fixed Gear Conversion

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