Originally Posted by
FBinNY
I'm something more than 99% sure that Shimano never used any other crank remover threads. So, I suspect that someone did a DIY rethread at some point.
That's what I was afraid of. It's a '93 Trek that was handed down from a long line of bike geeks, so it wouldn't surprise me if one got nutty with a tap and die set.
Your best option is to use an alternate method for removing the arm. My favorite is to use a pair of Jacobs Chuck removal wedges.
Amazon Prime is my best friend for a reason. Any particular size wedge I should buy for this?
Thank you for the help!