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Originally Posted by sasha055
I have same problem, I replaced the o-rings and I still have condensation going.
Same symptoms as you, condensation and white powder on the bleeder valve bolts.
Does anyone know part nr for the whole valve assembly? maybe changing it will solve the problem.
Sasha
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Sasha:
The part number for the complete assembly is 996.106.347.02. It supersedes two earlier part numbers and lists for about $33.
Aside from the O-rings, the rubber gasket/diaphragm sometimes gets torn or distorted. If replacing the O-rings did not solve the problem, check the diaphragm or just replace the entire assembly.
Here is a photo showing a distorted gasket/diaphragm. You can see old coolant residue in a number of places on the underside of the hard plastic piece that is showing, and you can see residue around one of the holes through which one of those fragile bolts passes.
Regards, Maurice.
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