Today's Message Index:
----------------------
1. 01:22 AM - Re: Buy Discount adidas Yeezy Powerphase on 2019mensjordans.com (AlanSanders)
2. 04:49 AM - Re: Repeated alternator failure (Art Zemon)
3. 02:07 PM - Re: Repeated alternator failure (Robert L. Nuckolls, III)
4. 08:58 PM - Re: Repeated alternator failure (Robert L. Nuckolls, III)
Message 1
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| Subject: | Re: Buy Discount adidas Yeezy Powerphase on 2019mensjordans.com |
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http://forums.matronics.com/viewtopic.php?p=490621#490621
Message 2
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| Subject: | Re: Repeated alternator failure |
Argonaut,
I don't know much about alternators but I have never seen one that needs
(or is supposed to have) any fluid inside, including motor oil. I would
look for, and eliminate, the engine oil leak and see if that preserves your
alternator.
Now I'm going to sit back and see if my guess aligns with what the truly
knowledgeable people suggest.
Cheers,
-- Art Z.
On Tue, Jul 30, 2019 at 10:59 PM Argonaut36 <fmlibrino@msn.com> wrote:
>
> The alternator in my Lycoming AEIO-360 engine is a Kelly Aerospace ALY
> 8520 formerly known as ALY 8420. The alternator fails every 80-100 hours
.
> Replacing the brushes and the brush holder (P/N 08-13833) brings back the
> alternator to work.
> The alternator does not fail suddenly. There is a period of time prior t
o
> each failure during which the alternator works intermittently, sometimes
it
> is on and sometimes is off. Then it stops working completely.
> On the removed brushes there is a black fluid (engine oil plus brush
> dust?). I don=99t know up to what extent this is normal.
> Any advice on how to proceed to fix this problem permanently?
--
https://CheerfulCurmudgeon.com/
*Love the stranger for you yourselves were strangers in Egypt. *Deut. 10:19
Message 3
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| Subject: | Re: Repeated alternator failure |
At 10:43 PM 7/30/2019, you wrote:
>
>The alternator in my Lycoming AEIO-360 engine is
>a Kelly Aerospace ALY 8520 formerly known as
>ALY 8420. The alternator fails every 80-100
>hours. Replacing the brushes and the brush
>holder (P/N 08-13833) brings back the alternator to work.
>The alternator does not fail suddenly. There is
>a period of time prior to each failure during
>which the alternator works intermittently,
>sometimes it is on and sometimes is off. Then it stops working completely.
>On the removed brushes there is a black fluid
>(engine oil plus brush dust?). I don=99t know
>up to what extent this is normal.
>Any advice on how to proceed to fix this problem permanently?
>Thanks
>
I there are no obvious sources of oil
external to the alternator (engine
leaks) then the next best guess i
the rear alternator bearing. These
are normally sealed and factory loaded
with the appropriate grease. If the
seal is leaking, the grease can migrate
out and onto the slip rings.
Bearings come in all manner of pedigree
but verifying seal quality and sometimes
type of grease can be problematic. Next
time you replace brushes, replace the
bearing too . . . and let us know how
it goes.
Bob . . .
Message 4
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| Subject: | Re: Repeated alternator failure |
At 10:43 PM 7/30/2019, you wrote:
>
>The alternator in my Lycoming AEIO-360 engine is
>a Kelly Aerospace ALY 8520 formerly known as
>ALY 8420. The alternator fails every 80-100
>hours. Replacing the brushes and the brush
>holder (P/N 08-13833) brings back the alternator to work.
>The alternator does not fail suddenly. There is
>a period of time prior to each failure during
>which the alternator works intermittently,
>sometimes it is on and sometimes is off. Then it stops working completely.
>On the removed brushes there is a black fluid
>(engine oil plus brush dust?). I don=99t know
>up to what extent this is normal.
>Any advice on how to proceed to fix this problem permanently?
>Thanks
>
I there are no obvious sources of oil
external to the alternator (engine
leaks) then the next best guess i
the rear alternator bearing. These
are normally sealed and factory loaded
with the appropriate grease. If the
seal is leaking, the grease can migrate
out and onto the slip rings.
Bearings come in all manner of pedigree
but verifying seal quality and sometimes
type of grease can be problematic. Next
time you replace brushes, replace the
bearing too . . . and let us know how
it goes.
Bob . . .
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