Backcountry Pilot • alternator belt squeals?

alternator belt squeals?

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Mon Mar 13, 2017 7:35 pm

alternator belt squeals?

My Cub seems to have developed a squealing alternator belt upon startup. It doesn't happen all the time, and sometimes it squeals longer than others. Any tips or suggestions on how to get rid of this annoying noise? The airplane starts reliably.
dtmnm25 offline
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Mon Mar 13, 2017 8:28 pm

Re: alternator belt squeals?

Tighten the belt.

MTV
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Tue Mar 14, 2017 12:40 am

Re: alternator belt squeals?

If tightening the belt hasn't worked, make sure it's not bottomed out in the pulley. You can't get it tight enough to fix that, time for a new belt.
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Tue Mar 14, 2017 7:49 pm

Re: alternator belt squeals?

Terry wrote:If tightening the belt hasn't worked, make sure it's not bottomed out in the pulley. You can't get it tight enough to fix that, time for a new belt.

X2
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Thu Mar 16, 2017 1:54 pm

Re: alternator belt squeals?

Aviation grade WD-40 :-"

Cary
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Thu Mar 16, 2017 2:17 pm

Re: alternator belt squeals?

Cary wrote:Aviation grade WD-40 :-"

Cary


Don't put that on a belt!
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