This is super common. Probably not really broken, but instead a gear
typically slides out of the way a tad causing it to not work. Palo Alto
Speedometer is superb shop to get this fixed at. You can either send
them the speedo or you can figure out what gear it is and they'll sell
you the gear- cost is something like a buck or two. Replacing the gear
yourself is not difficult but not trivial either. Don't let that scare
you though.  www.paspeedo.com is the place.
matthew

Toma Keller wrote:
>
> My brother called me this morning and told me that his Odometer and trip odometer stopped working this morning on his '91 Vanagon.  I know you can buy a new one from Volkswagen and he can get one from a yard but what about rebuilding/repairing the original unit?  Are there any instructions on how to do this or are there any companies that provide this service?
>
> Thanks,
>
> Toma