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Old 06-12-2008, 11:53 AM
SD Blue SD Blue is offline
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Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 4,186
Quote:
Originally Posted by Cr from Texas View Post
I've probably installed about a dozen monovalve kits in this car and knew to look for rubber damage - none. I think the complete valve replace has solved my problem. Does everyone realize Bosh has stopped production of these? Better buy a spare while you can.

I also found some monovalve kits are defective and use the following test procedure when installing:

Put the kit into the electromagnet portion and connect the pins direct to the battery to get 12V. A good kit will extend about 15-20 mm and hold that position until the voltage is removed. I found some kits (cheaper, probably from China). That pulse open and closed in my test. Clearly these would not be acceptable. I had two bad ones that I could not returned so I switched out the rubber pieces.
Hmmm......this sounds like a major factor in marginal air conditioning. I have noticed that sometimes the a/c puts out pretty cool air and at other times it's barely there. I'll have to look into that when the leaking vacuum pods are resolved. Also, I was unaware of the check valve. Does the check valve portion look like cleaning would be any benefit or is it pretty much remove/replace?
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84 300SD 350K+ miles ( Blue Belle )
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