Kody wrote:The best nut remover I have ever used is a 4" cutting wheel x 1.2mm thick mounted in my 4" angle grinder. These wheels slice thru steel like a hot knife in butter. Personaly, I wouldn't bother to try and remove nuts that had been rusted for 65 years. The "U" bolts would need to be replaced so I would cut them off. It's very easy to cut the "U" bolts without damaging the springs with one of these wheels. I have cut 1/2" x 1 1/4 steel in no more than a minute and a half. These things are the greatest invention since sliced bread. I cut all the round steel for making the bolts for my TD in seconds which was so much faster and easier that using a hacksaw.
Kody

There is no way I can replace the U-bolts, the shock bracket is welded to them! I know, bad engineering practice but I wasn't there to correct it when the trailer was built (I was only 1 year old).
Cutting the bolts isn't a solution when it's not a through bolt but is a stud welded to the trailer frame instead. Re-welding anything on this frame is completely out of the question for several reasons: 1, the frame is securely bolted to the plywood floor of the trailer, and 2, the frame is sheathed with the aluminum body skin.
While I appreciate alternative solutions and suggestions, after all Rob48 suggested the PBBlaster penetrating oil, working on a 65 year old trailer is vastly different from working on a new or home built trailer.
<Chas>
