---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Sat 08/22/15: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:49 AM - Re: Nanchang Air System (James Goolsby) ________________________________ Message 1 _____________________________________ Time: 04:49:03 AM PST US Subject: Re: Yak-List: Nanchang Air System From: James Goolsby Guys (& gals) Let's keep Dough & Katharine Sapp in our prayers. They are right in the mid dle of those west coast fires and are fighting to keep everything they own f rom being destroyed. Jim "Pappy" Goolsby Sent from my iPad from some where on The 3rd rock from the Sun. > On Aug 22, 2015, at 0:50, "Walter Lannon" wrote: > > All CJ=99s have a check valves in the charging circuits. Technicall y they are =9Ccheck valve =93 non-return=9D as compared to =9Ccheck valve =93 restricted flow=9D. The Schrader valv e is simply a local modification to enable charging with western facilities. The Schrader valve core is totally unnecessary. > Walt > > From: jblake207@comcast.net > Sent: Friday, August 21, 2015 11:13 AM > To: Yak-List > Subject: Re: Yak-List: Nanchang Air System > > My CJ doesn't have a check valve at the fill point. I asked Doug and some one else (maybe Blitz or Selby??) and they said some CJs have the check valv e there and some don't and no rationale why or why not. I purchased a new c heck valve and will install it just inside the Schrader valve. JB > > From: "A. Dennis Savarese" > To: yak-list@matronics.com > Sent: Friday, August 21, 2015 12:50:01 PM > Subject: Re: Yak-List: Nanchang Air System > > As a suggestion, you should really remove the valve core from the external air fill port John. The check valves in the system are there for a reason. They are suppose to prevent the air from dumping overboard. The Schrader v alve on the external air fill port is nothing more than an adapter for the h ose used to fill the bottles. Just because the Schrader valve comes with a v alve core when it was purchased, does not mean it has to remain in the Schra der valve. > > I know,...... you're going to say the valve core is a backup. But it also can be a trouble shooting hindrance if one of the check valves protecting t he main or emergency air system is leaking. With the valve core out, if the check valve leaks, you'll be able to see bubbles at the external air fill p ort with just a finger of saliva on the opening or spraying soapy water on t he opening. > > Dennis > > From: "jblake207@comcast.net" > To: Yak-List > Sent: Friday, August 21, 2015 11:43 AM > Subject: Re: Yak-List: Nanchang Air System > > I recently experienced a leak in my air system and chased it for weeks... n ever found it using soapy water method. Using a friend's Freon leak detecto r, I shot a small amount of Freon into the system (had to do some re-enginee ring on hoses fittings to make it work with the Freon bottle and airplane Sc hrader valve) and then filled the system to about 10 atmospheres with compr essed air... opened the main air valve to allow the Freon access to the enti re system. Using the Freon sniffer, I found a couple of leaks... taking Dou g Sapp's advice, used non-hardening aviation grade thread sealant (sort of l ike Loctite) on the threads, rebuilt a couple of the check valves, replaced t he valve core in the Schrader valve (main fill point) with a high pressure v alve core... now she holds air. > > Freon and freon sniffer were the keys to finding those small irritating le aks. > > JB > > Sent from my iPhone > > > On Aug 20, 2015, at 18:05, Byron Fox wrote: > > > > > > 14 years ago, I'd turn the main air off and come back a week later to > > discover there was still 30+ atmospheres (or CMUs - Chinese Mystery > > Units - or whatever) still in the plumbing south of the main shutoff > > valve. > > > > To maintain this happy state of affairs over time, I've overhauled the > > gear actuators, replaced front and back seat gear and flap valves, and > > routinely service check and shuttle valves. > > > > That brings us to today. Shut off the main air. Go to lunch. Come back > > in 45 minutes. Air in the plumbing - zero. WTF! > > > > So: > > > > 1. Balloon tested gear actuators. No seeping. > > > > 2. All firewall check valves > > overhauled within past month. > > > > 3. Pop off valve overhauled. > > > > 4. New snot valve. > > > > 5. Put a/c on jacks, put front gear and flap handles in neutral > > position bleeding off down pressure on gear actuators and up pressure > > on flap. Plumbing still bleeding off rapidly. > > > > Granted, this is no big deal. The compressor brings the stored air up > > quickly. It's me just being anal. > > But before I go through all the check valves again, does anybody have > > a bright idea? > > > > Thanks, > > > > > > > > Blitz Fox > > 415-307-2405 > > > > > > > > > > > ========== > List" rel="noreferrer" target="_blank">http://www.matronics.com/Naviga tor?Yak-List > ========== > FORUMS - > eferrer" target="_blank">http://forums.matronics.com > ========== > b Site - > -Matt Dralle, List Admin. > rel="noreferrer" target="_blank">http://www.matronics.com/contribution > ========== > > > > > > > et=_blank>http://www.matronics.com/Navigator?Yak-List > p://forums.matronics.com > blank>http://www.matronics.com/contribution > > > > > ronics.com/Navigator?Yak-List">http://www.matronics.com/Navigator?Yak-List > matronics.com/">http://forums.matronics.com > ronics.com/contribution">http://www.matronics.com/contribution > > > > > > et=_blank>http://www.matronics.com/Navigator?Yak-List > p://forums.matronics.com > blank>http://www.matronics.com/contribution > > > > > href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics. com/Navigator?Yak-List > href="http://forums.matronics.com">http://forums.matronics.com > href="http://www.matronics.com/contribution">http://www.matronics.com/c > > 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3 D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-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/yak-list Browse Digests http://www.matronics.com/digest/yak-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.