Well, I looked up my paperwork from the rebuild, and it was done back in August of 2001. (Man, I've been working on this project waaaaaay too long.) I figure that I would rather just install them myself than risk having something happen to my original MC. Plus, I'm not sure that they are still in the rebuild business.
I tried blowing back through the 2 MC outlets by mouth, and I can easily blow air back through them. I can't believe that there is a 10 psi valve in there.
It looks like the NAPA UP472 rebuild kit comes with the valves and new brake line seats. I think that I'll just go that route.
I understand the process for removal of the seats, but I have a question about installation. Should you install the new seats using only the tube nut to press them into place? It seems like this could possibly score the surface of the seat that mates with the brake line. Would it be better to install the seats using an actual brake line & nut instead of just the nut? Should anything be used on the new seats, such as Loctite retaining compound or brake fluid for lubrication?
I really appreciate all your help on this, Steve.