We regularly see people posting about drama with Landrover Chassis bushes so I thought you'd be interested to hear about the nonsense I'm working with on my wife's Toyota. The last MOT "advised" the suspension bushes on both sides. The "wishbone" in the suspension is held in place by a TRE type thing at the wheel end and two 19mm headed bolts on the inner side, one through what looks at first glance like a "normal" bush...
The issue I'm working with is that the bolt is secured to a captive nut inside the subframe, rather than a nice obvious nut on the other side of a bracket/chassis member..... The bolt started moving OK, a little tight but coming undone with a ratchet....till it was about 3/8th in undone when it tightened up....then let go, rotating freely. It will spin but move neither in nor out. I discover from the internet that its not a threaded hole nor a nut welded inside, its a captive nut held in a cage... and the cage has collapsed. ( See Landrover Doors...)
The BIG problem is that its completely sealed, no access to the nut.... Todays game has been cutting a hole in the sub-frame with a Dremel to at least get sight of the problem. I can now see the nut rotating as I operate the spanner. The plan over the weekend is to make the hold big enough to get something in to grip the nut, get it off and replace with a new wishbone, then bolt the whole thing back up and get a plate welded over the hole. As its a 2006 vehicle ( and owes us nothing) I'm willing to suspect that it will not need another suspension bush before its scrapped... Sadly I suspect it'll need the same treatment on both sides. What a spectacularly stupid bit of design though....
Pics below for illustration... The "bush" heads off to the left, the remains of the cage is the black bit and the rusty nut can be see above that, through the hole I've cut in the subframe. Further access is likely to require getting the anti-roll bar, at least, out of the way. Wider angle pic of "before" to give a better idea of the geography...