Neil, I’ve done it a few times. I always used Kroil and let it soak for a while. I then use acetylene torch to heat the outer housing very hot, then I go to a flat adjustable pipe wrench and put a 4’ fence post on the pipe wrench and it usually breaks free. Repeat if necessary.
Also, a lot of mechanics know this trick too…. Try to tighten it a little. Sometimes when you try to loosen old bolts they won’t budge because of crud. But if you try the other way, once in a while they budge and it cracks that seal of rust and crud.
Last edited by Speedracer; Sat Feb 14 2026 09:36 PM.