FYI to : Steve King, oops deleted your orig e mail.
From Steve Bobby
Here is an e-mail info from Oz, that I saved in my Maintenance Folder that
may be helpful on this issue. But the latest price mentioned of $107.63
for a complete flush drain may not be so bad. But gotta remove the old

As for myself and on my 80 Sundowner, I have been unable to fabricate a
socket with two pins sticking out, I tried vise grips holding in position :
a pair of those pliers used to squeeze those circle clips (like in used to
remove circle clips for auto drive shaft universal joints) wasn't ideal and
apparently not strong enough grip to loosen it.

OZ’s Message is as follows:
Fuel Drain 1980 Mouse
I finally got the leaky fuel drain valve fixed. I'm posting this
message so that others can learn from my experience.

I had a leaky Fuel Drain valve under the right wing. It was leaking
about 12 to 16 ounces per week. The late model Beeches use a flush
drain valve. AutoValve manufactures it. It is rather expensive
valve $236 from RAPID.

However, it is fairly easy to fix for under
a dollar. If you decide to remove the valve, first defuel the tank.
Unscrew the valve by using a specialty socket that you fabricate
yourself. Do not unscrew using a screwdriver it can damage the valve.
Fabricate a socket with two pins sticking out. You'll see what I am
talking about once you look at the valve. The outer larger diameter
O-Ring is MS29513-020. It is available through RAPID for 17 cents,
free shipping. It is not available at Aircraft Spruce. You will also
need the smaller O-ring that goes around the movable shaft. It is
MS29513-010. Do not dismantle the valve to remove and install the
O-ring on the shaft. Be patient and pry the old one off and work the
new o-ring in. That's it. Screw the valve into the wing. If the nut
inside the nutplate, which is inside the tank, spins (it happened to
me) no problem simply stick a flat head screwdriver in it from inside
the tank. You can access it be removing the fuel transmitter. Have
your work checked by an A&P. Fill up the tank and check for leaks.
Also inspect the area
around the fuel transmitter before installing the upholstery panel.

Hope this helps.

82 Sundowner

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