Matronics Email Lists :: View topic - leaking main bottle and emergency bottle on Yak

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

leaking main bottle and emergency bottle on Yak

Matronics Email Lists Forum Index -> Yak-List

View previous topic :: View next topic

Author Message

mikecavanagh1(at)hotmail.
Guest

Posted: Mon Apr 07, 2014 8:01 pm Post subject: leaking main bottle and emergency bottle on Yak

I've had both.  First time it was the main bottle and it was leaking out the fill port via the check valve on the firewall.  Removed the check valve cleaned and removed the old hard seal and replaced with a new O-ring and fixed that.  It's been good for 15 years since. Recently my Emergency tank also began to not hold pressure. I noticed when removing the the pneumatic fill valve cover on the side of the fuselage the tell tale pssst of air coming out. Normally there should be no air escaping here. Since the Main tank was holding pressure just fine, I knew the leak was coming from the emergency tank fill check valve just beside the fill port.  Follow the tubing back from your emergency tank to the fill port and you will find the check valve.  Very easy access from the rear cockpit.  I took mine apart, and cleaned it.  It has a spring and a small square piston with a donut shaped rubber seal on it's face.  I soaked mine in STP Oil Treatment for rejuvenating seals, for a day, put it back together and it sealed up tight with no leak.  In my case the Main tank leak was from the firewall mounted  main system fill, check valve, and the Emergency tank was bleeding down through the emergency system fill check valve on the left side of the fuselage behind the rear seat. I also changed out my main system bottle with a 6000 psi kevlar wrapped aluminum O2 cylinder left over from a trip up Everest.  It has a shutoff valve at the tank and I no longer suffer from a bled down main tank.  Just DON'T forget to turn it, and the Main system valve, ON before you get in the cockpit.  Checklist, first item!

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

mikecavanagh1(at)hotmail.
Guest

Posted: Mon Apr 07, 2014 8:01 pm Post subject: leaking main bottle and emergency bottle on Yak

I've had both.  First time it was the main bottle and it was leaking out the fill port via the check valve on the firewall.  Removed the check valve cleaned and removed the old hard seal and replaced with a new O-ring and fixed that.  It's been good for 15 years since. Recently my Emergency tank also began to not hold pressure. I noticed when removing the the pneumatic fill valve cover on the side of the fuselage the tell tale pssst of air coming out. Normally there should be no air escaping here. Since the Main tank was holding pressure just fine, I knew the leak was coming from the emergency tank fill check valve just beside the fill port.  Follow the tubing back from your emergency tank to the fill port and you will find the check valve.  Very easy access from the rear cockpit.  I took mine apart, and cleaned it.  It has a spring and a small square piston with a donut shaped rubber seal on it's face.  I soaked mine in STP Oil Treatment for rejuvenating seals, for a day, put it back together and it sealed up tight with no leak.  In my case the Main tank leak was from the firewall mounted  main system fill, check valve, and the Emergency tank was bleeding down through the emergency system fill check valve on the left side of the fuselage behind the rear seat. I also changed out my main system bottle with a 6000 psi kevlar wrapped aluminum O2 cylinder left over from a trip up Everest.  It has a shutoff valve at the tank and I no longer suffer from a bled down main tank.  Just DON'T forget to turn it, and the Main system valve, ON before you get in the cockpit.  Checklist, first item!

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

Dawg

Joined: 19 May 2013
Posts: 355

Posted: Tue Apr 08, 2014 1:11 am Post subject: leaking main bottle and emergency bottle on Yak

Can you send a copy of your Kevlar tank install?

Dawg



Sent from my iPad



 	  Quote: 	
		   On Apr 8, 2014, at 12:26, "Michael B. Cavanagh" <mikecavanagh1(at)hotmail.com> wrote:

 

 

 

 I've had both.  First time it was the main bottle and it was leaking out the fill port via the check valve on the firewall.  Removed the check valve cleaned and removed the old hard seal and replaced with a new O-ring and fixed that.  It's been good for 15 years since. Recently my Emergency tank also began to not hold pressure. I noticed when removing the the pneumatic fill valve cover on the side of the fuselage the tell tale pssst of air coming out. Normally there should be no air escaping here. Since the Main tank was holding pressure just fine, I knew the leak was coming from the emergency tank fill check valve just beside the fill port.  Follow the tubing back from your emergency tank to the fill port and you will find the check valve.  Very easy access from the rear cockpit.  I took mine apart, and cleaned it.  It has a spring and a small square piston with a donut shaped rubber seal on it's face.  I soaked mine in STP Oil Treatment for rejuvenating seals, for a day, p!

 ut it back together and it sealed up tight with no leak.  In my case the Main tank leak was from the firewall mounted  main system fill, check valve, and the Emergency tank was bleeding down through the emergency system fill check valve on the left side of the fuselage behind the rear seat. I also changed out my main system bottle with a 6000 psi kevlar wrapped aluminum O2 cylinder left over from a trip up Everest.  It has a shutoff valve at the tank and I no longer suffer from a bled down main tank.  Just DON'T forget to turn it, and the Main system valve, ON before you get in the cockpit.  Checklist, first item!

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

_________________
Dawg

rijaeger(at)wausau.k12.wi
Guest

Posted: Tue Apr 08, 2014 4:28 am Post subject: leaking main bottle and emergency bottle on Yak

Mike,

Any chance of posting a pic of the Kevlar bottle installation? Sounds like a winner!

On Mon, Apr 7, 2014 at 10:26 PM, Michael B. Cavanagh <<mikecavanagh1(at)hotmail.com>mikecavanagh1(at)hotmail.com> wrote:


I've had both. First time it was the main bottle and it was leaking out the fill port via the check valve on the firewall. Removed the check valve cleaned and removed the old hard seal and replaced with a new O-ring and fixed that. It's been good for 15 years since. Recently my Emergency tank also began to not hold pressure. I noticed when removing the the pneumatic fill valve cover on the side of the fuselage the tell tale pssst of air coming out. Normally there should be no air escaping here. Since the Main tank was holding pressure just fine, I knew the leak was coming from the emergency tank fill check valve just beside the fill port. Follow the tubing back from your emergency tank to the fill port and you will find the check valve. Very easy access from the rear cockpit. I took mine apart, and cleaned it. It has a spring and a small square piston with a donut shaped rubber seal on it's face. I soaked mine in STP Oil Treatment for rejuvenating seals, for a day, p!

ut it back together and it sealed up tight with no leak. In my case the Main tank leak was from the firewall mounted main system fill, check valve, and the Emergency tank was bleeding down through the emergency system fill check valve on the left side of the fuselage behind the rear seat. I also changed out my main system bottle with a 6000 psi kevlar wrapped aluminum O2 cylinder left over from a trip up Everest. It has a shutoff valve at the tank and I no longer suffer from a bled down main tank. Just DON'T forget to turn it, and the Main system valve, ON before you get in the cockpit. Checklist, first item!

--

Rico Jaeger

Choir / Wausau East High School

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

LawnDart

Joined: 05 Jun 2006
Posts: 64

Posted: Tue Apr 08, 2014 5:10 am Post subject: Re: leaking main bottle and emergency bottle on Yak

In my experience, with a 52, an emergency bottle leak was one of the two emergency gear valves in the front or rear cockpit.  There is a square o-ring around the t-fitting that deteriorates over time.

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

mikecavanagh1(at)hotmail.
Guest

Posted: Tue Apr 08, 2014 5:26 pm Post subject: leaking main bottle and emergency bottle on Yak

Sure, happy to share.  Give me a day to take some pics.

On Apr 8, 2014, at 7:28 AM, WENDELL JAEGER <rijaeger(at)wausau.k12.wi.us (rijaeger(at)wausau.k12.wi.us)> wrote:

[quote]Mike,



Any chance of posting a pic of the Kevlar bottle installation? Sounds like a winner!



On Mon, Apr 7, 2014 at 10:26 PM, Michael B. Cavanagh <mikecavanagh1(at)hotmail.com (mikecavanagh1(at)hotmail.com)> wrote:

  	  Quote: 	
		  --> Yak-List message posted by: "Michael B. Cavanagh" <mikecavanagh1(at)hotmail.com (mikecavanagh1(at)hotmail.com)>

  

 I've had both.  First time it was the main bottle and it was leaking out the fill port via the check valve on the firewall.  Removed the check valve cleaned and removed the old hard seal and replaced with a new O-ring and fixed that.  It's been good for 15 years since. Recently my Emergency tank also began to not hold pressure. I noticed when removing the the pneumatic fill valve cover on the side of the fuselage the tell tale pssst of air coming out. Normally there should be no air escaping here. Since the Main tank was holding pressure just fine, I knew the leak was coming from the emergency tank fill check valve just beside the fill port.  Follow the tubing back from your emergency tank to the fill port and you will find the check valve.  Very easy access from the rear cockpit.  I took mine apart, and cleaned it.  It has a spring and a small square piston with a donut shaped rubber seal on it's face.  I soaked mine in STP Oil Treatment for rejuvenating seals, for a day, p!

   ut it back together and it sealed up tight with no leak.  In my case the Main tank leak was from the firewall mounted  main system fill, check valve, and the Emergency tank was bleeding down through the emergency system fill check valve on the left side of the fuselage behind the rear seat. I also changed out my main system bottle with a 6000 psi kevlar wrapped aluminum O2 cylinder left over from a trip up Everest.  It has a shutoff valve at the tank and I no longer suffer from a bled down main tank.  Just DON'T forget to turn it, and the Main system valve, ON before you get in the cockpit.  Checklist, first item!

  

 ===========

 href="http://www.matronics.com/Navigator?Yak-List" target="_blank">http://www.matronics.com/Navigator?Yak-List

 ===========

 FORUMS -

 target="_blank">http://forums.matronics.com

 ===========

 Site -

            -Matt Dralle, List Admin.

 target="_blank">http://www.matronics.com/contribution

 ===========

 

 

 

 

 	




-- 

Rico Jaeger

 Choir / Wausau East High School

                      

  

 

 





 	  Quote: 	
		  

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/contribution

	
[b]

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Yak-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum