Originally Posted by
Kontact
And did you use the wrench to make it firmly tight?
My guess, in the absence of clarification, is that he threaded the puller in by hand and then used the Crescent wrench to turn the puller's thrust bolt, inadvertently stripping the crank's threads.
That, or he accidentally cross-threaded the crank's threads when he threaded in the puller.
Or a previous removal attempt left the crank arm threads in a damaged state.
Can't think of any other possibilities offhand.