In message , KenO
writes
Recently was unable to loosen the bolts of an electric fan motor that
needs rebuilding.

Have never had this problem before so my first thought is the bolts
have a high strength thread locker.

Did a forum search to check if anyone else had mentioned this problem
but found nothing.

Am interested in all suggestions to loosen these bolts.

Thanks

Ken

As well as the other suggestions, like all seized bolts that are not
budging, initially try to TIGHTEN them a little.
--
Ian