If you find the bolt rusted to the sleeve you might try what worked for me.

That sleeve is a piece of rolled steel. That means it will have a seam in it. The rubber on the bottom end of the shock will hide what you need to see so the rubber has to go.

I removed the rubber by burning it out with a propane torch. You have to be careful!! Have your fire extinguisher and/or water in place before you start.

After the rubber is gone you will be able to move the bottom end of the shock some and expose more of that rolled sleeve. Rotate the bolt until you locate the seam. Use a nice sharp chisel on the seam line and give a few sharp cracks with a hammer. Repeat on the other end of the sleeve. That should break the bond between the sleeve and bolt.

Don't beat on the thread end of the bolt. Install the nut so that your hammer is hitting both the end of the bolt and the nut evenly and you should be able to reuse the nut and bolt- the sleeve is part of the shock.

Good luck,
Randy