Mike, if you are pumping up to 60 Atmospheres in the main and 70
atmospheres in the emergency tank you are running just about 300 PSI
beyond maximum recommended pressure in your system.
DO NOT FIX THE LEAK!
Have a qualified mechanic set the pop-off valve so it will simply NOT
develop over 50 Atmospheres.
After you have done that, continue to try finding the leak.
Continuing to allow that kind of system pressure is very simply....
Irresponsible. Not only is your safety at risk, but also those that
may be in the immediate vicinity of the aircraft.
Although unsolicited really, here is another thought. Compressed air
can be dangerous. 1000 psi of compressed air can actually slice right
through human skin and into the soft tissue. Anyone who works with and
troubleshoots this kind of pressure in the military has to be CERTIFIED
to do so. Since you had no idea how dangerous 70 atmospheres is, it is
conceivable that you have no experience working with high pressure air
either.
Sometimes the "right thing to do" is to hire a certified mechanic to do
the job. Sometimes it is also the legal thing to do as well. Think it
over carefully. At the very minimum, if you attempt repairs of this
nature, it should be done under the direct supervision on an A&P. Not
an "inspection after the fact".
Mark Bitterlich
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of
cjpilot710@aol.com
Sent: Friday, August 22, 2008 10:11 PM
To: yak-list@matronics.com
Subject: Re: Emergency Tank leak?
The gage is one spot but there is also a check valve on the forward fire
wall that could be leaking. The rubber pad on the end of the brass cup
can become hard and crack. With your compressor working fine and
building up pressure though that check valve but once your compressor
shut down, the air is held in the emerg tank by that check valve.
In a message dated 8/22/2008 6:21:54 P.M. Eastern Daylight Time,
KingCJ6@aol.com writes:
If it's not the tank, lines to/from, valve etc., check the
gauge. Our's had a leak where the inlet fitting attached to the back
some years ago.
In a message dated 8/22/2008 3:04:34 P.M. Pacific Daylight Time,
bourgem@cia.com writes:
<bourgem@cia.com>
Hello all,,,
went out to the cj the other day and the emerg tank is
at zero. The main tank has 40atms... but bleeds down fairly rapidly
once I open it and if the engine is not running.
With the engine running, I easily pump up to 60 in the
main, and almost 70 in the emerg tank.
Ideas as to where the emerg tank maybe leaking?
thanks
--------
Mike "Skidmk" Bourget
Ottawa, Ontario
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=199982#199982
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