Today's Message Index:
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1. 08:16 AM - Re: Yak18t air leak (Rob Rowe)
2. 03:20 PM - alternator failure CJ6 (Okanogan Lew)
3. 10:24 PM - Re: alternator failure CJ6 (Brian Lloyd)
Message 1
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| Subject: | Re: Yak18t air leak |
AJ
The device you're describing sounds like an AD-50 which is now only found on -18Ts
(and some early -52s, mostly later removed at overhaul).
As you've surmised its purpose is to relieve the compressor load when the main
air system pressure has reached 50 bar and restore charging again when the main
air drops below 40 bar.
I've no hands-on experience with this device but fortunately the Russian one-size-fits-all
approach means I've found a description from the Mi-8 helicopter that
also uses it ... translated (basically) into English courtesy of Google (as
per the attached PDF).
Your post-shutdown leak problem suggests the Check Valve (4) on the diagram is
either corroded or its seal has deteriorated (or both), so that would be a good
place to start looking.
I'm sure the pros on the list will be able to advise further on dismantling tips
and spares.
Hope this at least gets you started ... good luck.
Rob R
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=383174#383174
Attachments:
http://forums.matronics.com//files/ad_50_translation_660.pdf
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| Subject: | alternator failure CJ6 |
Guys, I had an in flight alternator failure today & found a broken wire that goes
from a plastic plug in on the side of the alt. up to the main charging post.
In that line is a small round electronic looking piece that has solid wires
coming out of both ends. The wire broke at that round piece. I am assuming
that it is some kind of filter, but there are no numbers on it. Any suggestions
as to what I should replace it with? Thanks.
Paul Lewis
p s this is not a B&C alternator
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=383194#383194
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| Subject: | Re: alternator failure CJ6 |
On Sat, Sep 15, 2012 at 3:18 PM, Okanogan Lew <vplewis@community.org> wrote:
>
> Guys, I had an in flight alternator failure today & found a broken wire
> that goes from a plastic plug in on the side of the alt. up to the main
> charging post. In that line is a small round electronic looking piece that
> has solid wires coming out of both ends. The wire broke at that round
> piece. I am assuming that it is some kind of filter, but there are no
> numbers on it. Any suggestions as to what I should replace it with?
> Thanks.
>
Need more info. What kind of alternator? Can you provide pictures?
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
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