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Bottom bracket shell threads

leflef Posts: 728
edited September 2011 in Workshop
So a few weeks ago after removing the BB I noticed that small areas of the threads on the shell have a rough edge. I think this could be responsible for some ongoing creaking. Is it worth tapping the BB shell? I'm not sure this will help as the threads are actually missing a bit of material (I'm talking very small amounts and in only about 3 small locations) so the peak of the thread (I'm sure there is a more technical term!) has a rough edge. As I say its not on much of the threads and theres not much of the material missing.

Also if I do have it tapped should I use a new BB in case it was this that caused it?


  • nicklousenicklouse Posts: 50,675 Lives Here
    chasing out the threads is good if you can not screw the BB in by hand.

    New BB why does it not work any more?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • leflef Posts: 728
    BB is fine, I'm just not sure whether the BB has created the damage on the threads. I'' get the threads chased and see if that sorts it.
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