I’ve got a stuck situation on my Canyon road bike. I was trying to center the front brake because it was rubbing against the disc. While tightening the bolt (4mm hex) with a torque wrench, it snapped off flush with the frame. I didn’t force it, but I might have cross-threaded it slightly.
What’s the best way to remove it? I’d prefer starting with the least aggressive methods.
by Primary_Knee_1112
5 Comments
Carbon frame?
screw extractor drill should get this one quite easy, if the screw is not cross threaded
edit: it might even screw out if you set up a drill in reverse
If you put it in cross threaded hard enough to sheer it is in there and threads are damages. It should be taken to the factory, if not in warrenty it will be expensive.
There are screw removal kits on Amazon.
They work by drilling a hole in the bolt flipping the piece and using the drill backwards to back the screw out.
They work really well.
SKmoon Damaged Screw Remover and Extractor Set , Made From H.S.S. 4341#, the Hardness Is 62-63hrc ( Set of 4 ) https://amzn.eu/d/fOo7MJO
Had a similar situation with a bolt for my braze on front mech (well, obviously it didn’t braze on, it was bolt on, but you get the gist).
The best advice I could find was to Dremel a small hole into the broken thread, then insert a screw into the resulting hole, and use that to remove the broken thread.
I offer the minor caveat that it didn’t work for me.