72BBChuck,
I have an understanding and figured out the piston lengths to get semi functioning brakes again.
Just trying to determine what new replacement parts are needed for the existing older worn master/proportioning valve parts.
My current master on a web site shows it is a non power brake master with my
SPID labeled Hydro Brake Booster adding to my confusion.
I’m learning everyday.
Thanks for the info and reply.
