While it doesn't apply to new brake boosters of the type that the brake fluid goes through the unit, on Nov. 13th I posted where to look - and yes, you do have to remove the entire booster.
While there is a form of return valve on these boosters, it is essentially a diaphragm. These boosters Do Not use a return valve that attaches to your inlet manifold. I might be wrong here but if you have floor mounted pedals and it has one (or two if a 1750) boosters, it then has the brake fluid going through the booster 'unit'. If the car has pendulum pedals, it then uses a return valve mounted on the inlet manifold. These boosters are not remotely similar to one another. Biba -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
