---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Tue 04/22/14: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:23 AM - Leaking vent line on QB tanks (Lenny Iszak) 2. 06:57 AM - Re: Leaking vent line on QB tanks (Tim Olson) 3. 07:22 AM - Re: Leaking vent line on QB tanks (Kelly McMullen) 4. 02:58 PM - Re: Leaking vent line on QB tanks (Lenny Iszak) 5. 03:07 PM - Re: Leaking vent line on QB tanks (Lenny Iszak) ________________________________ Message 1 _____________________________________ Time: 06:23:28 AM PST US Subject: RV10-List: Leaking vent line on QB tanks From: "Lenny Iszak" It appears that the blue nut on the vent line inside the tank was only hand tightened by the QB builders. With more than 20 gallons in the tank, fuel started dripping through the vent line. About a cup or more a day. It's a real pain but it can be tightened through the fuel sender holes, while peeking through the drain hole with a camera. I was lucky enough to be able to borrow a friend's unfinished fuel tank so I can practice... Still without a camera I couldn't do it. The nut was lose on both tanks (only one was loose enough to leak though). I heard this happen to others before. So if you have qb tanks it may be worth checking before you install and proseal in the floats. The vent line was also not bent right on one tank, so the float has no room to go all the way to the top, but that's another story... Lenny -------- Lenny #40803 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=422237#422237 ________________________________ Message 2 _____________________________________ Time: 06:57:50 AM PST US From: Tim Olson Subject: Re: RV10-List: Leaking vent line on QB tanks Did you have to use a funky custom wrench, or were you able to use something more standard when using the camera method? Tim On 4/22/2014 8:22 AM, Lenny Iszak wrote: > > It appears that the blue nut on the vent line inside the tank was only hand tightened by the QB builders. With more than 20 gallons in the tank, fuel started dripping through the vent line. About a cup or more a day. > > It's a real pain but it can be tightened through the fuel sender holes, while peeking through the drain hole with a camera. I was lucky enough to be able to borrow a friend's unfinished fuel tank so I can practice... Still without a camera I couldn't do it. > > The nut was lose on both tanks (only one was loose enough to leak though). > > I heard this happen to others before. So if you have qb tanks it may be worth checking before you install and proseal in the floats. > > The vent line was also not bent right on one tank, so the float has no room to go all the way to the top, but that's another story... > > Lenny > > -------- > Lenny > #40803 > > ________________________________ Message 3 _____________________________________ Time: 07:22:16 AM PST US From: Kelly McMullen Subject: Re: RV10-List: Leaking vent line on QB tanks If you proseal the sending unit to the tank, and that sending unit fails, you will curse yourself for a long time while you try to remove the proseal. Just saying, as I steel myself for having to do a proseal repair on a Mooney tank. On 4/22/2014 6:22 AM, Lenny Iszak wrote: > - > > I heard this happen to others before. So if you have qb tanks it may be worth checking before you install and proseal in the floats. > > The vent line was also not bent right on one tank, so the float has no room to go all the way to the top, but that's another story... > > Lenny > > -------- > Lenny > #40803 > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=422237#422237 > > ________________________________ Message 4 _____________________________________ Time: 02:58:07 PM PST US Subject: RV10-List: Re: Leaking vent line on QB tanks From: "Lenny Iszak" Ended up cutting a slot in a shorty box-end wrench so it goes on the vent tube, and hooking up a bunch of long zip-ties on the other end, so i can maneuver it around by holding onto the zip ties. Lenny Tim Olson wrote: > Did you have to use a funky custom wrench, or were you able to > use something more standard when using the camera method? > > Tim > > On 4/22/2014 8:22 AM, Lenny Iszak wrote: > > > > > > > It appears that the blue nut on the vent line inside the tank was only hand tightened by the QB builders. With more than 20 gallons in the tank, fuel started dripping through the vent line. About a cup or more a day. > > > > It's a real pain but it can be tightened through the fuel sender holes, while peeking through the drain hole with a camera. I was lucky enough to be able to borrow a friend's unfinished fuel tank so I can practice... Still without a camera I couldn't do it. > > > > The nut was lose on both tanks (only one was loose enough to leak though). > > > > I heard this happen to others before. So if you have qb tanks it may be worth checking before you install and proseal in the floats. > > > > The vent line was also not bent right on one tank, so the float has no room to go all the way to the top, but that's another story... > > > > Lenny > > > > -------- > > Lenny > > #40803 > > > > > > > > > Read this topic online here: http://forums.matronics.com/viewtopic.php?p=422272#422272 ________________________________ Message 5 _____________________________________ Time: 03:07:24 PM PST US Subject: RV10-List: Re: Leaking vent line on QB tanks From: "Lenny Iszak" A while ago I saw some plastic scrapers on AircraftSpruce, they look like double edged razor blades. I bought some to try them out. https://www.aircraftspruce.com/catalog/topages/scraperite12-03311.php Cuts through the proseal like butter, but you have to use it as a knife not as a scraper. It doesn't hurt the aluminum at all. On the face of the sender I just used a razorblade to clean up around the screws. Lenny Kellym wrote: > If you proseal the sending unit to the tank, and that sending unit > fails, you will curse yourself for a long time while you try to remove > the proseal. Just saying, as I steel myself for having to do a proseal > repair on a Mooney tank. > > On 4/22/2014 6:22 AM, Lenny Iszak wrote: > > > - > > > > I heard this happen to others before. So if you have qb tanks it may be worth checking before you install and proseal in the floats. > > > > The vent line was also not bent right on one tank, so the float has no room to go all the way to the top, but that's another story... > > > > Lenny > > > > -------- > > Lenny > > #40803 > > > > > > > > > > Read this topic online here: > > > > http://forums.matronics.com/viewtopic.php?p=422237#422237 > > > > > > > > > > > > > > > > > > > > > > > > > Read this topic online here: http://forums.matronics.com/viewtopic.php?p=422274#422274 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv10-list Browse Digests http://www.matronics.com/digest/rv10-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.