---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Tue 03/08/22: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:12 PM - Air leak (Steven Johnson) 2. 06:40 PM - Re: Air leak (Anthony Savarese) ________________________________ Message 1 _____________________________________ Time: 12:12:22 PM PST US From: Steven Johnson Subject: Yak-List: Air leak Does anyone have a suggestion on how to locate a slow leak on in the main air system of a Yak 52? I replaced the pressure relief piston, and that decreased, but did not eliminate my leak. Air will take a week to bleed down to being too low to start my plane. Is there any type of instrument that can detect air escaping? Ive tried using a soap solution with no success and I cant hear anything. I would like to identify the source of the leak prior to tearing the whole system apart. Steve N9900X Sent from my iPad ________________________________ Message 2 _____________________________________ Time: 06:40:33 PM PST US From: Anthony Savarese Subject: Re: Yak-List: Air leak Have you sprayed the soapy water on the external air fill port hole? If you have a Schrader valve installed on the external air fill port and there is a valve core in the Schrader valve, remove the valve core permanently because the external air fill port is protected by a check valve. FWIW, most Schrader valve cores are like the ones we find in tire tubes and valve stems on our automobiles are only good to about 150 PSI. Needless to say, the pneumatic system pressure on the Yak and CJ far exceed 150 PSI. Dennis Sent from my iPhone > On Mar 8, 2022, at 3:14 PM, Steven Johnson wrote: > > > Does anyone have a suggestion on how to locate a slow leak on in the main air system of a Yak 52? I replaced the pressure relief piston, and that decreased, but did not eliminate my leak. Air will take a week to bleed down to being too low to start my plane. Is there any type of instrument that can detect air escaping? Ive tried using a soap solution with no success and I cant hear anything. I would like to identify the source of the leak prior to tearing the whole system apart. > > Steve > N9900X > Sent from my iPad > > > > ------------------------------------------------------------------------------------- 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.