I'm having trouble removing my drive side crank from the spindle I have already taken out the 8mm bolt and undone the preload ring on the non drive side it seems stuck on the end of the spindle. Please help. Any suggestions for how to get it off?

  • Just keep turning the 8mm bolt. It will come off eventually Commented May 28, 2023 at 4:31
  • @ArtGertner I know I have to be nice but it's tough because it's like you didn't read the question at all. Perhaps I'm just too sensitive about answers in comments
    – Swifty
    Commented May 28, 2023 at 13:38
  • Hi @Swifty, no need to be offended. Perhaps I did not read the question carefully enough, you are right. Commented May 28, 2023 at 14:46

1 Answer 1


The description makes it sound like either the extraction cap is absent (they sometimes vibrate loose or otherwise go missing in action), or you took it off. The intention is for the extraction cap to be in place as you unthread the crank bolt. The crank bolt then rams into the extraction cap, which pulls the crank off the end of the spindle. It's a press fit so it's supposed to be stuck there until the press fit is undone.

If the cap is gone, you can get a new one in a new Dub crank bolt and cap set.

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