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Old 11-10-2013, 11:35 AM
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LettersFromFlyoverCountry LettersFromFlyoverCountry is offline
Join Date: Jan 2005
Location: St. Paul, MN.
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Default Fuel Quick drain leak

My Quick drain fuel drain is leaking. I think I've read that there's an O ring in there that usually is the culprit. Anyone know offhand what size that is? Maybe I can find one over at Ace.
Bob Collins
St. Paul, MN.
Blog: Letters From Flyover Country
RV-12iS finishing kit (still). About 600 hours in. Mothballed until I get a flux capacitor.

Builder log
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Old 11-10-2013, 11:53 AM
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Walt Walt is offline
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,430

You can usually just pull them out and clean the debris from around the O ring.
Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
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Old 11-10-2013, 12:09 PM
terrykohler terrykohler is offline
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Default More Often, It's Debris In The Tank

Before you pull the drain, try "working" it up and down. If that doesn't work, you can pull the fitting, but as already mentioned, you can more likely just clean it. I carry a spare valve assembly, so I can easily swap it out. Both times I've done so, it only required cleaning.
Terry, CFI
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Old 11-10-2013, 01:01 PM
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bhester bhester is offline
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Location: Hopkinsville, KY
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MS29513-006 1/8 1/4 1/16 $0.24
Bobby Hester - Builder/Pilot/A&P
Surfing the web from Hopkinsville, KY
N857BH RV7A XP-O360 - Garmin G3X ADS-B IN/OUT 2020 Compliant
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Old 11-10-2013, 02:57 PM
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RONSIM RONSIM is online now
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Location: Largo, FL
Posts: 965
Default Always have a spare

I keep a spare with a fresh O ring ---- easy to change them out (not more than 10 gallons of fuel down the arm) (just kidding, only a little spillage) -- I have spare O rings and just "rebuild" the leaker and have it ready to go back the next time.
RV-10 Co-built, maintained, flown (sold)
RV-8A Maintained and flown (Sold)
RV-6A Bought and Flying (N177RV), upgrades $$$
IO360, 180HP/CS, AFS 5600T, D10A, G650, G430, G327, ADS-B, VIZ385 AP
Very Happy Contributor
Based at KCLW (Clearwater, FL)
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Old 11-10-2013, 03:07 PM
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Mike S Mike S is offline
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Location: Dayton Airpark, NV A34
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Very handy info to have, so I moved this thread to "Ongoing Maintenance" and made it a sticky.
Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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Old 11-10-2013, 03:34 PM
Scott Hersha Scott Hersha is offline
Join Date: Jan 2005
Location: Cincinnati, OH
Posts: 1,285

If you plug the tank vent with a golf tee or piece of tape, it won't leak much while you make the change.
RV6/2001 built/sold 2005
RV8 Fastback/2008 built/sold 2015
RV4/bought 2016/sold/2017
RV8/2018 built/Sold(sadly)
RV4/bought 2019 Flying
Cincinnati, OH/KHAO
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Old 11-10-2013, 04:21 PM
agough277 agough277 is offline
Join Date: Aug 2008
Location: Sandy Valley,Nevada 3L2
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RV6A, RV7, RV6 Wing
Living with my 6A at 3L2 near Las Vegas
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Old 11-13-2013, 08:37 AM
krw5927 krw5927 is offline
Join Date: Aug 2010
Location: Wichita, KS
Posts: 1,952

McMaster carries Viton o-rings which work perfectly and are ethanol resistant, for those of you who may use the forbidden fuel. Part number 9464K11 will get you 100 of the little buggers.

Bob, if you need a few send me a quick PM with your address and I'll throw some in the mail.
Kurt W.
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Old 11-13-2013, 09:02 AM
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bkilby bkilby is offline
Join Date: Dec 2006
Location: Newnan, GA
Posts: 304

Anyone have a part number for a plug to screw in the sump drain? Might be handy to have on a trip if you find a drain leaking and don't have another drain/o-ring to replace it
Brian Kilby
flying RV-6A, previously flying RV-9A
based at KCTJ, Carrollton, GA
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