1988 xj40 rear hub adjustable spacer set up

I am trying to set the rear hub up, previous owner lost the adjustable spacer, need help setting shim width. Any and all help will be appreciated in, thanks. Putter, 1988 xj40

Perhaps this will help …

Thanks for your reply, that was for an ‘e-type’ and what I have is a 1988 xj40. They are similar but not the same. Any information on the xj40 would be greatly appreciated.