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Re: Aftermarket Heater Control Valve Posted by Landjet [Email] (#16) [Profile/Gallery] (more from Landjet) on Mon, 22 Feb 2010 09:56:13 In Reply to: Re: Aftermarket Heater Control Valve, Andy of Vermont [Profile/Gallery] , Mon, 22 Feb 2010 04:42:01 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Check the surface where the O rings sit -- there was a .030" variance over the surface on the new one I had from Scantech. That would mean the O ring would not have been effective to seal the coolant.
We took a glass plate with wet/dry paper and used a circular motion to make the warped surface flat. It will be evident when it is flat enough to seal. Make sure you use a cross pattern to tighten the screws and very little sealant on the O rings. Just enough to hold them in place should do it.
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