Here is a link to Kirby Palm's book, Experience in a Book: Help for the Jaguar XJ-S Owner. It is written from the owners perspective and gives a lot of tips on maintaining and rebuilding the rear suspension (as well as the rest of the XJ-S) without the special factory tools. Since all Jag rears from the XKE up to the XJ40 series are the same design, it has universal application to all the Jag rears we have in our cars.
I have found it very useful in rebuilding my Jag rear.
http://www.jag-lovers.org/xj-s/book/Jaguar.html