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N7092A(at)aol.com
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 Posted: Mon Jul 10, 2006 2:16 pm Post subject: Slow leak in Main Air Tank -52 |
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OK guys here's the problem we just started experiencing. The main air tank has a slow leak that will take 2 - 3 days to drain completely. We are pretty sure it is leaking out of the valve that is between the fill port on the side and the main tank. When I put my thumb over the port opening I can feel it begin to build pressure and leak out. The real tell tale is that when I take the cover off of the port on the side it is pressurized and "pop's off". The emergency air tank has no leaks at all and holds pressure just fine.
We have flown it with the leak and the tank fills right up and it fly's fine. It seems we had this problem before but it worked itself out on it's own.
Anybody seen this on theirs?
Yak-52
1983
PAO
Mark Merrill
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dsavarese(at)elmore.rr.co
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| Posted: Mon Jul 10, 2006 4:51 pm Post subject: Slow leak in Main Air Tank -52 |
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Remove and replace the check valve on the firewall at the cross (+) where the pop off valve is located. If you are looking at the cross, the pop off valve is on the top, the air filter is on the bottom. The check valve on the right side goes to the snot bottle. The check valve on the left goes to the external air fill port. Replacing the check valve on the left, or you may be able to clean the crud out of it to make it seal properly, will definitely fix this problem.
Dennis
[quote] ---
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N7092A(at)aol.com
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| Posted: Fri Jul 14, 2006 8:41 am Post subject: Slow leak in Main Air Tank -52 |
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Thanks Dennis,
We are looking at it this weekend. I will let you know.
Mark
In a message dated 7/10/2006 5:52:41 P.M. Pacific Daylight Time, dsavarese(at)elmore.rr.com writes:
[quote] Remove and replace the check valve on the firewall at the cross (+) where the pop off valve is located. If you are looking at the cross, the pop off valve is on the top, the air filter is on the bottom. The check valve on the right side goes to the snot bottle. The check valve on the left goes to the external air fill port. Replacing the check valve on the left, or you may be able to clean the crud out of it to make it seal properly, will definitely fix this problem.
Dennis
[quote] ---
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