Thanks everyone for these suggestions! To be honest I had not thought about a gear puller
I also
do not really care if I damage the arm (non drive side). I would try the grinder, but my wife will
not let me have one
Mike
"Werehatrack" <
[email protected]> wrote in message
news:[email protected]...
> On Sat, 13 Sep 2003 07:53:42 -0700, "Mike Kennedy" <
[email protected]> may have said:
>
> > Is there a way to pull a crank arm off if the threads have been stripped?
>
> Several. On the left (non-drive) side, a gear puller will usually do the job. If it's on the drive
> side, and if the chainrings allow enough access to be able to get the jaws of an ordinary gear
> puller behind the hub, then that's probably your first approximation. If the chainrings can't be
> gotten out of the way, or if it's a five-arm spider crank, you probably can't use this trick.
>
> >I assume that the LBS has some way to do this, but is there some way for me to do the work? Can
> >stripped threads be re-threaded?
>
> If the crank is supposed to be usable when you're done, then it may be better to take it to the
> lbs, as a certain amount of finesse may be required. If you want to try it yourself, then the
> suggestions already posted (heating the hub with a propane torch, riding with the bolt loose or
> off, etc) all have the potential to remove the arm, *but* they also all have the potential to
> damage the crank as well. As was noted, Park makes an oversize puller, and there's a tap to cut
> the corresponding threads, but this is one of those areas where unless you're pretty good with a
> big tap, there's more than a trivial chance that the attempt will fail.
>
> In order of what I'd try:
>
> Gear puller.
>
> Heat.
>
> Ride with bolt loose.
>
> Yank whole crank and BB off bike, take to machine shop, and have them use a press to pop the arm
> off the shaft. (In my case, of course, the press is a whole lot closer.)
>
> Use potentially destructive Big Hammers in a persuasive manner. (NOT recommended for those who are
> not familiar with the techniques!)
>
> --
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