I did the same thing last summer. There are different wheel bearings for
early and late 84 Vanagon.
I still have the earlier (through chassis 24E0150000), smaller diameter
ones are still sitting on my desk. p/n 113 517 185.
The later (from chassis 24E0150000) , larger diameter are 251 405 645.
(Usual disclaimer: I may be totally full of crap.)
Good luck

Thomas Brobst