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Dave, Andante thanks for the info.
A rag around the PV is surely a good idea. My plan is to crack it open a bit (enough to see some fluid leaking out. Then have the family member push SLOWLY on the pedal to push out a fair amount of fluid. While they still have their foot on the pedal, I'll tighten it off so as to not let it suck air back in. Then I'll go take a shower.
I'm not too worried about all four calipers needing a rebuild at the same time. The BMW's were pretty damn new when I got them. The rear's well...ok they are a bit crusty. I don't know their history and to be quite frank I'm worried about one of the pistons in one of them. BUT I'd like to get the system working first, then I can tell if just one of them is sticking.
Concerning pushing on the pedal... yeah I'm in favor of stomping on it pretty good. As I understand it, the PV needs a bit of pressure to get it to open so I say go for it.
I still don't know how in the heck to check the MC plunger rod clearance. My haynes manual should be here in a couple of days. Hopefully it will have some notes on it. Anyone know of an online resource?
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