Insanely tight rear hub nut.. HELP! Options

[mrdezyne]

Trying to tear down my rear brakes and suspension to start a rebuild but I have hit a stone wall with the hub nuts on both sides. Are these things torqued with a 3ft cheater bar or something? I have already tried penetrating oil and heat cycles. The threads are not rusty nor are the nuts. Nothing is rounded off..... yet. Is there a secret here or what?

[byndbad914]

QUOTE (Eric_Shea @ Mar 13 2006, 03:13 PM)

I've gotten all mine off with the impact.   I do them off the car too.  I have a large piece of aluminum that I bolt to the hub using a couple lug bolts.  That stabilizes it.  Then I prop the MAPP torch in such a way that it blasts the nut for about 5 minutes. I've only had one that I had to use acetylene on.  We got it cherry red and it finally came off.  Proper amounts of serious heat seem to be the ticket. Cheater bars should do the trick.

I concur. I have always gotten them off with my impact (Sears 1/2", nothing really fancy) and I have stripped a couple real rust piles. Had to heat the hell out of one car, but only that time.

Make sure you have a lot of line pressure too. I have cranked the regulator up if it is really stuck. I think I have gone up to almost 150lbs line pressure (IIRC that was about the max I could get out of my compressor). tools typically call out something like 90 psi line pressure max, but I have gone over it. In fact, a couple of the shops I worked for back in the day would run line pressures in the 120-150psi range all the time. I will follow up with proceed at your own risk to CMA (IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) but I have yet to see a gun break due to line pressures in that area. I've seen a socket or two split of course.