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1. 06:28 AM - Mooney Alternator woes (Ralph E. Capen)
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| Subject: | Mooney Alternator woes |
My hangar neighbor is trying to figure out why his alternator occasionally drops
off line - requiring a weird reset sequence. He has to shut off the battery
and field, then go to a low power setting and bring it back up again. Something
about resetting an overvoltage protection device.
It is an M20S with Cont 550 and gear driven alternator. The first regulator lasted
only a couple of years before giving up the ghost and the replacement was
a special from Mooney.
My first line of thinking is to locate the regulator and test it. Nobody knows
where it is hiding.
(I'm in DC - the plane is in DE...I'll be home next weekend to help more.)
Meanwhile, does anyone have an electronic copy of the Light Plane Maintenance article
on troubleshooting alternators...and the Mooney M20S maintenance manual?
If we can find it, I'm hoping that we can determine if the regulator is the culprit.
Thanks in advance,
Ralph
RV6A N822AR in N06 - waiting for my engine/prop to come back from overhaul after
being hit by a flying hangar door!
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