---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Mon 09/03/12: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:51 PM - Re: M-14 for sale (keithmckinley) 2. 06:20 PM - Air Leak (Rico Jaeger) 3. 07:53 PM - Re: Air Leak (Jon Boede) 4. 08:16 PM - Re: Air Leak (Rico Jaeger) ________________________________ Message 1 _____________________________________ Time: 03:51:03 PM PST US Subject: Yak-List: Re: M-14 for sale From: "keithmckinley" off line is off line -------- Keith McKinley 700HS KFIT Read this topic online here: http://forums.matronics.com/viewtopic.php?p=382343#382343 ________________________________ Message 2 _____________________________________ Time: 06:20:00 PM PST US Subject: Yak-List: Air Leak From: Rico Jaeger Greetings All! A while back my Yak 52 was test flown and at one point, the emergency air was opened. Now the air system is reluctant to switch back over to the primary system and there's an audible hiss from the relief valve immediately below the front seat / right side every time I open up the main air valve after recharging. This valve has a large escape hole on top and if I seal it w/ my thumb it seems to close the system and all is back to normal. Unfortunately, everytime I open the master valve I go back to square one w/ this process. I was told by one source that one of my actuator shuttle valves is malfunctioning. But which one? I purchased an ultrasonic listening device in an attempt to trace down the source of the leaks. In "tapping" lines on all 3 gear, the audible leak seems to resonate through all lines. It DOES seem to be noticably-louder on the nose gear line - or is this simply because that point is physically-closer to the floor-mounted escape valve? What do I do next? Anyone w/ experience in this area would be a welcome sight on my screen. Thank you for your assistance and patience, guys! ________________________________ Message 3 _____________________________________ Time: 07:53:03 PM PST US From: Jon Boede Subject: RE: Yak-List: Air Leak Have you completely drained both air systems? I'm more familiar with the C J but I recall that the Yak system has to be completely drained before it w ill switch back over from the emergency system. Subject: Yak-List: Air Leak From: rijaeger@wausau.k12.wi.us Greetings All! A while back my Yak 52 was test flown and at one point=2C th e emergency air was opened. Now the air system is reluctant to switch back over to the primary system and there's an audible hiss from the relief valv e immediately below the front seat / right side every time I open up the ma in air valve after recharging. This valve has a large escape hole on top an d if I seal it w/ my thumb it seems to close the system and all is back to normal. Unfortunately=2C everytime I open the master valve I go back to squ are one w/ this process. I was told by one source that one of my actuator s huttle valves is malfunctioning. But which one? I purchased an ultrasonic l istening device in an attempt to trace down the source of the leaks. In "ta pping" lines on all 3 gear=2C the audible leak seems to resonate through al l lines. It DOES seem to be noticably-louder on the nose gear line - or is this simply because that point is physically-closer to the floor-mounted es cape valve? What do I do next? Anyone w/ experience in this area would be a welcome sight on my screen. Thank you for your assistance and patience=2C guys! ________________________________ Message 4 _____________________________________ Time: 08:16:18 PM PST US Subject: Re: Yak-List: Air Leak From: Rico Jaeger Yes - zero'd both the primary and emergency systems. Thank you for your response! On Mon, Sep 3, 2012 at 9:50 PM, Jon Boede wrote: > Have you completely drained both air systems? I'm more familiar with the > CJ but I recall that the Yak system has to be completely drained before it > will switch back over from the emergency system. > > ------------------------------ > Date: Mon, 3 Sep 2012 20:17:26 -0500 > Subject: Yak-List: Air Leak > From: rijaeger@wausau.k12.wi.us > To: yak-list@matronics.com > > > Greetings All! A while back my Yak 52 was test flown and at one point, the > emergency air was opened. Now the air system is reluctant to switch back > over to the primary system and there's an audible hiss from the relief > valve immediately below the front seat / right side every time I open up > the main air valve after recharging. This valve has a large escape hole on > top and if I seal it w/ my thumb it seems to close the system and all is > back to normal. Unfortunately, everytime I open the master valve I go back > to square one w/ this process. I was told by one source that one of my > actuator shuttle valves is malfunctioning. But which one? I purchased an > ultrasonic listening device in an attempt to trace down the source of > the leaks. In "tapping" lines on all 3 gear, the audible leak seems to > resonate through all lines. It DOES seem to be noticably-louder on the nose > gear line - or is this simply because that point is physically-closer to > the floor-mounted escape valve? What do I do next? Anyone w/ experience in > this area would be a welcome sight on my screen. Thank you for your > assistance and patience, guys! > > * > > rget="_blank">http://www.matronics.com/Navigator?Yak-Listhttp://forums.matronics.com > ="_blank">http://www.matronics.com/contribution > * > > * > > * > > ------------------------------------------------------------------------------------- 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.