A few things I can think of:

The front lower shock absorber bushings are mounted in the control arms and tend to perish, so while you're at it, have those checked along with the other lower control arm bushes already mentioned by electechbw and Fraser.

The air spring-to-body retaining nuts that go on the top studs of the air spring have a low torque specification, just 25 Nm / 18 ft. lbs. Some of our members have snapped a stud off of the air spring by overtightening those nuts.

Also, the torque spec for the air hose fittings is an even lower 5 Nm / 44 inch pounds. Some members have stripped the threads in the air spring by overtightening the fitting. Be sure your shop knows and applies the correct torque. Sometimes when the air hose fittings are loosened they don't want to retighten properly without leaking. In this case, you need to cut 1/2 inch off of the hose at as close to a 90-degree angle as possible and install a new compression ring or "olive." Jaguar recommends special hose cutters by SPC OTC or Snap On/Blue Point (both are made in Canada by Anderle).

Cheers,

Don

 

I may be looking at doing this shortly - will probably go with Moog, but TBD...

Question: how are the upper pivot bolts removed? is there a nut on the back side that I'll have to figure out how to reach, or are they threaded into the chassis somehow so that all I have to do is back out the bolts? I assume I'll need to drop the vertical link from the ball joint first to make it a bit easier on myself. Any tips?

 

I believe they are threaded into the holding brackets, I don't remember any nuts on those bolts. They were easy to remove though, even if there were nuts on the bolts. The upper A arm ball joints on my car were loose and needed to be replaced. I bought inexpensive replacements on EBay that were for a Lincoln. They had the same mold markings as the OEM parts.

 

https://www.ebay.com/itm/New-Pair-of...53.m1438.l2649

THis price is almost for free with ship included

 

You will have remove both shocks to retrieve the two bolts.

 

Thanks Anna - was afraid of that. Oh well, they aren't too difficult to get out in the scheme of things. Great tip on the ebay Lincoln LS parts, makes it a lot cheaper :-)