Bob,
The fuel tank drains (at least the ones I've taken apart in the last 40
years) have a small "O" ring on them that is under constant compression.
That "O" ring is notorious for deforming, especially if they have are made
of nitrile or buna rubber and exposed to auto gas. I buy replacement "O"
rings made of viton at a gasket supply house for about 10 cents each and
just replace them rather than buying new drains. The viton materiel resists
the effects of auto gas better than any other material I have tried. It's a
lot less expensive.
John Hart
KF IV NSI Subaru
Wilburton, OK
From: owner-kitfox-list-server@matronics.com
[mailto:owner-kitfox-list-server@matronics.com] On Behalf Of Bob Brennan
Sent: Monday, October 06, 2008 4:52 PM
To: kitfox-list@matronics.com
Subject: Fuel drain, fuel filter, and a whatsit
Ok - showing my ignorance here...
The first picture is of the fuel drain for the wing tank which tends to leak
and needs replacing. I got as far as
http://www.aircraftspruce.com/catalog/appages/safair.php but the CAV-110,
160, 170, and 180 all look a lot like it. I know what an NPT thread is but
where is the 1/4" or 1/8" measurement taken? Or the other measurements?
Second picture is my fuel filter. Any suggestions on a replacement? Advance
Auto Parts or Manny Moe &Jack ok?
Third picture is the whats-it. Obviously a reservoir with some sort of
lubricant which hasn't gone down since I have owned the plane. Obviously
something I need to know about and service.
Bob Brennan - N717GB
1991 UK Model 2 ELSA Kitfox
Rotax 582 with 3 blade prop
Wrightsville Pa
