The top nut on proportioning valve is weeping slightly. I suspect it's just the seal, but it looks like it has been tightened at some point by the PO so I am reluctant to tighten the nut now, without the parts on hand, because you know what will happen.
I called Volvo for a seal kit and the guy didn't even know what a proportioning valve was. He wants me to drive over there and look at book.
There doesn't seem to be anything in FAQ on the valve itself but I know I read a write up here once. Can anyone find it?
Or there a part number for the valve I can use to find new seals or is it better just to replace the whole thing with the one from my donor car. (Way easier to replace a top seal than the whole hard-to-reach-valve)
BTW no warning lights or brake problem other than the initial low brake fluid which pointed me to the problem in the first place.
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