Join Date: May 2004
Location: Sterling Heights, MI
If you're talking about the big 32mm nut that retains the outboard side of the CV axle shaft, assuming you don't have an impact, keep the car on the ground, get a good breaker bar and step on it. If that doesn't work, sometimes I have resorted to slipping a length of heavy pipe over the end of a breaker bar. You will have an incredible amount of leverage if the length of pipe is long enough, and I've been able to break loose fasteners that are torqued to hundreds of foot pounds. But beware, this is more than enough torque to move the car, and it's also enough torque to break a cheap socket or breaker bar. My cheater pipe is about 5 feet long and 2" in inside diameter.
If that doesn't work, and you have access to an acetylene torch, you can cook the nut until it's glowing a dull red and usually break it free. No guarantees that the bearing will be any good after you do that, though. You can also get a BFH and a cold chisel and cut it off. In other words, you may have to destroy it to get it off. That does happen.
Hope this helps.