Today's Message Index:
----------------------
1. 11:54 AM - Yak 52 Air Leaks (bcbcbc)
2. 12:48 PM - Re: Yak 52 Air Leaks (Eric Wobschall)
3. 01:16 PM - Re: Yak 52 Air Leaks (T A LEWIS)
4. 01:37 PM - Re: Yak 52 Air Leaks (bcbcbc)
5. 03:05 PM - Re: Re: Yak 52 Air Leaks (KingCJ6@aol.com)
6. 03:22 PM - Re: Yak 52 Air Leaks (bcbcbc)
7. 05:38 PM - Re: Yak 52 Air Leaks (Vic)
8. 05:44 PM - Re: Re: Yak 52 Air Leaks (Eric Wobschall)
9. 06:16 PM - Re: cnc cutting for inst panel (keithmckinley)
10. 07:17 PM - Re: Yak 52 Air Leaks (Vic)
11. 09:41 PM - Re: Yak 52 Air Leaks (Hank Gibson)
12. 09:46 PM - Re: Yak 52 Air Leaks (Eric Wobschall)
13. 11:40 PM - Re: cnc cutting for inst panel (CJ6XXK)
Message 1
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| Subject: | Yak 52 Air Leaks |
Hello all, my Yak has a bleed down air leak that takes about 2 days, thus making
it hard to detect. I've replaced the opo off valve piston and the air filler
check valve. The main air shutoff valve has been checked good. Thus the leak
is between the air filler check valve and the main air shutoff valve. That
seems to only leave air lines and B nuts and perhaps flared tube end cracks.
Has anyone else had a slow leak, what did you do, and what turned out to be the
problem, so I can intelligently hone in on what the problem might be, instead
of tearing everything apart. I can still fly alright since the compressor
overcomes the slow leak, but I'd like to see that main air gage park itself at
40 or 50. The emergency side is tight as a drum. Thanks all.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331551#331551
Message 2
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| Subject: | Re: Yak 52 Air Leaks |
Those problems can be pesky, but since it doesn't appear to be leaking in, try
slathering all fittings, etc. with soapy water.
On Feb 19, 2011, at 2:51 PM, bcbcbc wrote:
>
> Hello all, my Yak has a bleed down air leak that takes about 2 days, thus making
it hard to detect. I've replaced the opo off valve piston and the air filler
check valve. The main air shutoff valve has been checked good. Thus the
leak is between the air filler check valve and the main air shutoff valve. That
seems to only leave air lines and B nuts and perhaps flared tube end cracks.
Has anyone else had a slow leak, what did you do, and what turned out to be
the problem, so I can intelligently hone in on what the problem might be, instead
of tearing everything apart. I can still fly alright since the compressor
overcomes the slow leak, but I'd like to see that main air gage park itself
at 40 or 50. The emergency side is tight as a drum. Thanks all.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=331551#331551
>
>
>
>
>
>
>
>
>
>
Message 3
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| Subject: | Re: Yak 52 Air Leaks |
i have found that kid's bubble mix works well when applied with a small paint
brush .
terry lewis
----- Original Message ----
From: Eric Wobschall <eric@buffaloskyline.com>
Sent: Sat, February 19, 2011 3:45:22 PM
Subject: Re: Yak-List: Yak 52 Air Leaks
Those problems can be pesky, but since it doesn't appear to be leaking in, try
slathering all fittings, etc. with soapy water.
On Feb 19, 2011, at 2:51 PM, bcbcbc wrote:
>
> Hello all, my Yak has a bleed down air leak that takes about 2 days, thus
>making it hard to detect. I've replaced the opo off valve piston and the air
>filler check valve. The main air shutoff valve has been checked good. Thus the
>leak is between the air filler check valve and the main air shutoff valve. That
>seems to only leave air lines and B nuts and perhaps flared tube end cracks.
>Has anyone else had a slow leak, what did you do, and what turned out to be the
>problem, so I can intelligently hone in on what the problem might be, instead
of
>tearing everything apart. I can still fly alright since the compressor
>overcomes the slow leak, but I'd like to see that main air gage park itself at
>40 or 50. The emergency side is tight as a drum. Thanks all.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=331551#331551
>
>
>
>
>
>
>
>
>
>
Message 4
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| Subject: | Re: Yak 52 Air Leaks |
Excellent advice !!! I figured that would be the next step, and rather simple
to do at that. Thanks for the prompt replies.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331558#331558
Message 5
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| Subject: | Re: Yak 52 Air Leaks |
An ultrasonic leak detector is the best way to go. One can aim it or just
have it in the proximity of a small leak and it will sound like a raging
river. Good for areas you can't access and observe soapy water. About $100
on E-Bay.
Dave
In a message dated 2/19/2011 1:37:51 P.M. Pacific Standard Time,
ghostemail@verizon.net writes:
--> Yak-List message posted by: "bcbcbc" <ghostemail@verizon.net>
Excellent advice !!! I figured that would be the next step, and rather
simple to do at that. Thanks for the prompt replies.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331558#331558
Message 6
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| Subject: | Re: Yak 52 Air Leaks |
Another great idea. Thanks very much !!!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331562#331562
Message 7
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| Subject: | Re: Yak 52 Air Leaks |
Hello,
dont forget to check the lines to the manometer, they are rubber hoses in the 18
T, dont know about 52s. These hoses may be awkward to replace, so we had a leak
there due to old age of the rubber. And yes, we had a develloping fracture
in a pipe as well. Each time we could locate the problem by just listening carefully
in a quiet hangar. A pressure system drop to zero in two days is quite
a few gallons per hour. So Isuggest you take a torch and listen carefully in
the still of the night. Not knowing your age I would have advised to take a younger
person with you for the job, but then a veteran of the techno generation
would be quite useless at that.
Good luck with that one
cheers
Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331573#331573
Message 8
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| Subject: | Re: Yak 52 Air Leaks |
I can still hear Led Zepelin when it's quiet.
On Feb 19, 2011, at 8:35 PM, Vic wrote:
>
> Hello,
>
> dont forget to check the lines to the manometer, they are rubber hoses in the
18 T, dont know about 52s. These hoses may be awkward to replace, so we had a
leak there due to old age of the rubber. And yes, we had a develloping fracture
in a pipe as well. Each time we could locate the problem by just listening
carefully in a quiet hangar. A pressure system drop to zero in two days is quite
a few gallons per hour. So Isuggest you take a torch and listen carefully in
the still of the night. Not knowing your age I would have advised to take a
younger person with you for the job, but then a veteran of the techno generation
would be quite useless at that.
> Good luck with that one
> cheers
> Vic
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=331573#331573
>
>
>
>
>
>
>
>
>
>
Message 9
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| Subject: | Re: cnc cutting for inst panel |
NICE!
--------
Keith McKinley
700HS
KFIT
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331579#331579
Message 10
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| Subject: | Re: Yak 52 Air Leaks |
Hey,
Led Zeppelin tinnitus is quite allright ( though it does not help with the diagnosis
for pneumatics ) !
cheers
Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331586#331586
Message 11
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| Subject: | Re: Yak 52 Air Leaks |
Don't forget the gear and flap handles;- any and all can be the culprit;
- Leaking rear gear handle is common.- Also, all four of your actuators
(3 gear, 1 flap) can have leak-past internally.- Doug overhauled all of
mine and it helped.- Finally, your two brake valves (reducing and differe
ntial) can go bad and be a source of leakage.- The Chinese made up overha
ul kits for all these air system valves and tear them down every 100 hours
I believe.- Doubt many of us do that...-
Hank Gibson
904-738-3240 Mobile
904-213-1760 Home
hkgibby@yahoo.com
hkgibson@fnf.com
-
--- On Sat, 2/19/11, bcbcbc <ghostemail@verizon.net> wrote:
From: bcbcbc <ghostemail@verizon.net>
Subject: Yak-List: Yak 52 Air Leaks
Hello all, my Yak has a bleed down air leak that takes about 2 days, thus m
aking it hard to detect.- I've replaced the opo off valve piston and the
air filler check valve.- The main air shutoff valve has been checked good
.- Thus the leak is between the air filler check valve and the main air s
hutoff valve.- That seems to only leave air lines and B nuts and perhaps
flared tube end cracks.- Has anyone else had a slow leak, what did you do
, and what turned out to be the problem, so I can intelligently hone in on
what the problem might be, instead of tearing everything apart.- I can st
ill fly alright since the compressor overcomes the slow leak, but I'd like
to see that main air gage park itself at 40 or 50.- The emergency side is
tight as a drum.- Thanks all.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331551#331551
le, List Admin.
=0A=0A=0A
Message 12
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| Subject: | Re: Yak 52 Air Leaks |
shuttle valves, too
On Feb 20, 2011, at 12:37 AM, Hank Gibson wrote:
> Don't forget the gear and flap handles; any and all can be the
culprit; Leaking rear gear handle is common. Also, all four of your
actuators (3 gear, 1 flap) can have leak-past internally. Doug
overhauled all of mine and it helped. Finally, your two brake valves
(reducing and differential) can go bad and be a source of leakage. The
Chinese made up overhaul kits for all these air system valves and tear
them down every 100 hours I believe. Doubt many of us do that...
>
> Hank Gibson
> 904-738-3240 Mobile
> 904-213-1760 Home
> hkgibby@yahoo.com
> hkgibson@fnf.com
>
>
>
> --- On Sat, 2/19/11, bcbcbc <ghostemail@verizon.net> wrote:
>
> From: bcbcbc <ghostemail@verizon.net>
> Subject: Yak-List: Yak 52 Air Leaks
> To: yak-list@matronics.com
> Date: Saturday, February 19, 2011, 2:51 PM
>
>
> Hello all, my Yak has a bleed down air leak that takes about 2 days,
thus making it hard to detect. I've replaced the opo off valve piston
and the air filler check valve. The main air shutoff valve has been
checked good. Thus the leak is between the air filler check valve and
the main air shutoff valve. That seems to only leave air lines and B
nuts and perhaps flared tube end cracks. Has anyone else had a slow
leak, what did you do, and what turned out to be the problem, so I can
intelligently hone in on what the problem might be, instead of tearing
everything apart. I can still fly alright since the compressor
overcomes the slow leak, but I'd like to see that main air gage park
itself at 40 or 50. The emergency side is tight as a drum. Thanks all.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=331551#331551
>
>
>
>
>
>
>
>
>
>
>
>
Message 13
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| Subject: | Re: cnc cutting for inst panel |
Hi
How did you go pressing the sides over? What size material did you use.
If someone can get me a CAD file or dimensions i will draw them up and cut some.
I am also going to do the fuel filler covers as well that i will send to Doug Sapp
so he can supply them to all.
Daniel
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=331595#331595
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