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Pneumatic line flare

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keithmckinley

Joined: 11 Aug 2008
Posts: 434

Posted: Sat Nov 10, 2012 7:11 am Post subject: Pneumatic line flare

Just double checking...37 degrees? also, anyone have any thoughts on this;



connection at emergency air bottle is good, Front cockpit E air valve is perfect with SS needle, I rebuilt the check valve (Doug's kit) on front right firewall.



The emergency bottle will still not hold air.

Keith

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hkgibby(at)yahoo.com
Guest

Posted: Sat Nov 10, 2012 7:55 am Post subject: Pneumatic line flare

I had a hole develop in bottle itself from rust and had to replace.  You will not be able to hold air for more than 30 secs or so and you'll be able to hear it back at drain access door.  Other culprits could be the shutoff valves/gauges in individual cockpits.



Hoot



Sent from my iPhone



On Nov 10, 2012, at 8:11 AM, "keithmckinley" <keith.mckinley(at)townisp.com> wrote:



 	  Quote: 	
		   

 

 Just double checking...37 degrees? also, anyone have any thoughts on this;

 

 connection at emergency air bottle is good, Front cockpit E air valve is perfect with SS needle, I rebuilt the check valve (Doug's kit) on front right firewall.

 

 The emergency bottle will still not hold air.

 

 

 Keith

 

 --------

 Keith McKinley

 700HS

 KFIT

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=387506#387506

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keithmckinley

Joined: 11 Aug 2008
Posts: 434

Posted: Sat Nov 10, 2012 5:06 pm Post subject: Re: Pneumatic line flare

Cockpit valves look like new, lines are tight. 



I believe the gauges measure line pressure and not bottle pressure like the main air system. I'm going to recheck the schematic.



Keith

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dsavarese0812(at)bellsout
Guest

Posted: Sat Nov 10, 2012 5:39 pm Post subject: Pneumatic line flare

On the CJ, the main system gauge measures line pressure until you open 

the main air valve.  Then it measures the pressure in the main air 

bottle.  The emergency gauge measures the emergency bottle pressure 

because it reads the pressure all the time without the emergency air 

valve opened.

Dennis



A. Dennis Savarese

334-285-6263

334-546-8182 (mobile)

www.yak-52.com

Skype - Yakguy1



On 11/10/2012 7:06 PM, keithmckinley wrote:

 	  Quote: 	
		   



 Cockpit valves look like new, lines are tight.



 I believe the gauges measure line pressure and not bottle pressure like the main air system. I'm going to recheck the schematic.



 Keith



 --------

 Keith McKinley

 700HS

 KFIT





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=387522#387522

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kingcj6(at)aol.com
Guest

Posted: Sat Nov 10, 2012 5:57 pm Post subject: Pneumatic line flare

Years ago, our emergency system also drained down.  A ultrasonic tester found the leak to be in the inlet area of the gauge; a new one quickly fixed it.

    

   Dave

   --

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keithmckinley

Joined: 11 Aug 2008
Posts: 434

Posted: Fri Nov 16, 2012 10:51 am Post subject: Re: Pneumatic line flare

Thanks Everyone!



Keith

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Harv

Joined: 01 Jul 2010
Posts: 172

Posted: Thu Nov 29, 2012 1:35 am Post subject: Re: Pneumatic line flare

Keith

I'm having exactly the same issue at the moment, emergency air pressure leaks to zero over about a day. It must be small leak and isnt audiable (to my ear).



I've not had chance to look closely yet but I have new stanless needles in the emerg valves and the bottle was pressure tested (as per the schedule) and the check valve on the fire wall is new.



I can only thing a line nut needs tightening or a gauge is leaking?



Rgs

Harv

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tigerbabaluba

Joined: 17 Sep 2011
Posts: 6
Location: Portugal

Posted: Thu Nov 29, 2012 1:59 am Post subject: Re: Pneumatic line flare

Try water and soap. Start your search at the emergency bottle nut.

I´ve got same problem, solved very easily.

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Tigerbabaluba from Portugal

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