Randy, I'm assuming you are saying not to heat it because it will become brittle? I guess I should have mentioned that I wouldn't plan on putting it back into service after that. Aside from cutting them off, heat is the only other way I have been successful removing them... I have shattered a few pitman arm pullers trying to remove stuck arms, but I'm assuming that being up here in the rust belt has a lot to do with them being so stubborn!