9

How do I remove a compression plug (aka. expander bung) like this one?

compression plug top compression plug side

Most guides I could find assume that there's a 6mm hex Allen opening that allows tightening/loosening the plug (example pictured below) but that's clearly not the case with mine.

With hex

I read there are designs that require screwing in the bolt partially and hitting it with a hammer until the expander's loosened but I'd rather ask first. The → REMOVE and INSTALL ← markings seem to suggest that there's another way to remove it.


Note that the 2mm gap visible on second picture was caused by the plug being loose enough to be pulled up when tightening the top cap - the spacers can rotate freely and the whole fork gets slightly loose after a few days. Adding another spacer only caused the plug to slide out a bit further so I'd like to anchor the expander properly.

  • 2
    I think the felt is a re-brand KCNC compression plug so you could search that. Also there may be a smaller hex screw at the bottom of the threaded shaft (possibly 3mm) that may be able to be loosened. Use a bright torch to see. – DWGKNZ Aug 15 '14 at 0:25
  • 1
    Looks to me like you just twist the top plate clockwise. Have you tried that? A strap wrench or jar opener might help if it's really stuck. – alex Aug 15 '14 at 3:59
  • I guess it would be possible to twist the plate but not likely without those tools. Fortunately, it turned out that there indeed was a hex screw at the bottom :). – kryger Aug 15 '14 at 20:14
9

@DWGKNZ was right, turned out that there was a 3mm hex at the bottom. Picture of the removed plug, upside down:

plug

Thanks for quick and useful advice.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.