If you have a B&C alternator: Check the plug-in connection to the back of the alternator. If the push-on (blade, fast-on ?) female tab type connections are slightly loose or have any corrosion the resistance of the circuit goes up and is very inconstant and not in-line with the commanded alternator output.

This can cause the regulator to loose control of the bus voltage and alternator output. When it senses over voltage it crowbar opens the field breaker. I struggled with this for several months until I solved it. Just removing the connector and pushing it back on can temporarily solve the problem for a while, even months, but it will come back at some point unless the connectors are replaced.

Also, using both of the field connectors in parallel on the B&C alternator significantly improves connection reliability.

Neal

Glasair N15F

I was thinking about that and checked when I last replaced my battery... over 500 hours ago.  I will probably order a new one now just in case.

Thanks

Rick

From: vtailjeff@aol.com [mailto:vtailjeff@aol.com]
Sent: Tuesday, October 06, 2009 7:46 PM
To: lml@lancaironline.net
Subject: Re: [LML] ALT FLD CB Problem

yes, bad battery


-----Original Message-----
From: Rick Argente <rickargente@gmail.com>
To: lml@lancaironline.net
Sent: Tue, Oct 6, 2009 12:23 pm
Subject: [LML] ALT FLD CB Problem

Hello all,

I flew my 360 to Tangier Island yesterday and on the way back to Princeton,

NJ, my ALT FLD CB popped out at least four times during the short 45 minute

trip.  In the past, occasionally, this CB will pop out write after I start

the engine and that would be it.  Anybody on the list have had a similar

problem with the Alt Field popping out?  Please advise.

Thanks much,

Rick Argente

N360ZR (believe it or not, with over 1,000 hours now!)

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