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Date: Tue, 17 Jul 2012 08:10:41 -0400
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Subject: Re: [LML] Alternator overhaul required?
From: "William A. Hogarty" <billhogarty@gmail.com>
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Dico:

I had the alternator quit on my  IV-P at 30 hours.  There are no gears
involved precisely to avoid the  problems
you mentioned.  Instead there is a nonmetallic coupling that is very
expensive to replace.
Fortunately, the warrenty covered it.  I fly with a 20 amp backup
alternator, just in case..

BTW, When the bearing inside your  Slick mag freezes, you will
experience the same problems you mentioned.
(dont ask me how I know).  BUMMER

Regards, Bill H

On Mon, Jul 16, 2012 at 5:12 AM, Dico Reijers <dico@internetworks.ca> wrote:
> Hi All,
>
> A buddy of mine recently had some bad luck.  He was flying his Cessna 310
> back from Calgary and enroute to Thunder Bay, the alternator light went on
> just before landing.  He landed in Thunder Bay, where he was overnighting,
> and contacted his mechanic who told him that it was probably a just a lose
> wire and that he had a backup alternator that could get him home (a few hour
> vfr flight) the next day.  So the next day he starts his plane, does a run
> up.  Then the RPM starts dropping, then MP drops and all of a sudden the
> engine stops.  Everything seized up and nothing (the starter or hand) could
> move the prop.  Anyhow, what the suspect happened is that a bearing or
> something got chewed up and the metal all went throughout the engine, turbo
> chargers, etc (everywhere the oil went).  Long story short, its going to be
> about $75,000 by the time he gets out of there flying again (he will
> probably get $17k for his core though)....  This got my thinking as our
> alternators on our IVP planes are at the front with no belts and I don't
> want to have the same thing happen ---  I have an ALX 9524R alternator ---
> what has been the experience of our fleet?  Do you guys do preventative
> maintenance or do you have any suggestions for me?  Or did my buddy just
> have some bad luck and I'm thinking too much?!
>
> Regards,
>
> Dico