If your CJ has these bolt-on spring hangers, you need to fix them. Either get one-piece aftermarket hangers or weld support tabs into these, then weld them to the frame. Once you get to getting on it, the bolts like to come out of the frame. If you live where there is no rust, they tend to work themselves loose. Got rust? They rip out. If the bolts don’t let go, we’ve seen the portion of the mount where the bushing sits rip off as well.