Black thing in center. Its leaking on mine. Is it fixable with a oring etc? what am i even looking at and why would that part leak?




EDIT : found info online.



"There are 2 O-rings in the proportioning valve. If one of the O-rings leaked the prop. valve would lock up and not work. So the "extra port" is a small hole covered by piece of rubber that has a pin hole in it. It lets the fluid leak out rather than the prop. valve just not working."



I would just close this down,but this might help someone else..Question is should i attempt to buy some orings and rebuild that piston? or buy a new valve all together.

 

I tried to buy parts for my combination valve once and Chevy toldd me that it only comes as a complete unit. If you find some parts let us all know. These thing aren't cheap.

 

Called around today. Cant buy the kit..

Called local pull it yard,$10 bucks for one. I guess im heading down there tomorrow in the rain.