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n9242z+teamgrumman(at)gma
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 Posted: Wed Jul 26, 2006 2:39 pm Post subject: Fuel contamination |
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Oh, the joys of ownership.
I've found some kind of contamination in my right tank. It looks like small bits of black plastic. There is some black sealant around the inside of the filler, possibly this is flaking off in the tank? In the back of my mind, I recall some mention of the fuel float dissolving but I can't find anything in the archives.
Any thoughts, condolences?
Thanks,
Kevin
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n76lima(at)mindspring.com
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| Posted: Wed Jul 26, 2006 4:21 pm Post subject: Fuel contamination |
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| Quote: | I've found some kind of contamination in my right tank. It looks like small
bits of black plastic. There is some black sealant around the inside of the
filler, possibly this is flaking off in the tank? In the back of my mind, I
recall some mention of the fuel float dissolving but I can't find anything
in the archives.
|
If its an AA-5x, then it is quite possibly the fuel sender float. They
fail by wearing at the metal pivot and when the hole in the float gets
large enough, the float comes off the metal arm and the gauge reads Empty
all the time.
The sender can be rebuilt with a new float, and can be changed from the
outside on all but the very earliest AA-5s. However if the float has come
off in the tank, you'll need to take the access cover(s) off the bottom and
remove the float from the tank. 
The ground up bits of the float look like black sand, and will sump out
with your fuel sample.
Bob Steward, A&P IA
Birmingham, AL
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