There is a rebuild kit for the shuttle valve. It rebuilds nicely since it is brass. The kit consists of a couple of o-rings (one is actually square) along with a brass sealing washer. I had trouble getting the piston out when I rebuilt this one. I eventually capped off the ports and used a grease gun to drive the piston out. Everything cleaned up nicely. I got the rebuild kit from Wilkinson.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.