Who has done cab mounts

[BigA]

I tried today to change my cab mounts today and had no problems with any nuts or bottom mounts. Now, the upper mounts I tried for over 2 hours to get them free was another story. I have tried all kind of things but use my left over fireworks. I don't have an air chisel but do have other air tools. I am at a loss. Need help.

[Tx Firefighter]

jack the cab up away from them and grip them with a pipe wrench. If you can turn them with the wrench, you'll break the rust bond loose.

I've had to talk seriously with them before to get them out of there.