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From: Mike Brasler (no email)
Date: Mon Nov 07 2005 - 05:31:52 EST
Sometimes leaks occur in only one direction.
Many times I have landed up looking at fuel systems, water systems etc, and
found that although fuel or water is not dripping out, when the system is
placed unded negative pressure, air goes in. There are two causes,
"non-return" flaps of flexible material that displace upon change in
pressure, and the fact that air molecules are smaller than water/fuel and
fit through smaller cracks.
It might even be that the steel/bronze of your seacock has gone porous.
Heres the test, bung the skin fitting on the outside, attach a transparent
stiff hose to the inside just ahead of the pump, and apply a vacuum, look
for bubbles. Now find where the air is getting in.
good luck.
Regards
Laura, Mike and Liz
http://www.seakin.com/gilana/default.htm
>From:
>To:
>Subject: lv-ab: AC Pump Problem
>Date: Sun, 06 Nov 2005 19:37:54 -0500
>
>My AC pump which is only a few months old is having a problem. It was
>working fine before Wilma and I tried a few things to get it working right
>but it's still wacky.
>
>When it first kicks on it runs fine but then for some reason air starts
>getting in the strainer then it looses suction and because the water isn't
>flowing the compressor shuts off. Then when it kicks back on it flows fine
>again for a little bit then starts getting air again.
>
>I checked to see if everything was tight and it was. I blew air back
>through the hose and through hull and it went through OK.
>
>Anybody have any ideas on what it could be?
>
>Thanks!
>
>
>
>
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