Originally Posted By jlatessa
I'm not sure that is a proportioning valve, just a distribution block with a pressure imbalance switch for your "brake" light.

I took mine apart and cleaned everything, got some new O-rings and all is good.

Joe


I hope the o-rings you purchased are made from EPDM rubber. The o-rings found at your local auto parts stores are typically made from a compound like Viton or Nitrile (Buna-N) rubber that isn't compatible with brake fluid. They will deteriorate rapidly.

Scott Hollenbeck Administrator, Mustang 428 Cobra Jet Registry Owner, Muscle Car Research LLC 1970 Ford Mustang Mach 1 2006 Dodge Charger SRT8 1995 Chevrolet Impala SS