nuckolls.bob(at)aeroelect Guest
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Posted: Mon Mar 22, 2010 11:23 am Post subject: No Title |
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At 01:00 PM 5/22/2010, you wrote:
Quote: |
Hi all,
I would like to ask your comments regarding a reoccurring problem that I am
having in my RV7. I have wired it according to Z11 with the additional
projection for internally regulated ND alternator as suggested by the
connection. I have had now three alternator failures in short order, each
time I have taken out the alternator and had it checked out at the shop,
twice they found a faulty diode and the third time the alternator checked
out ok, no fault found. I have exchanged the alternator contactor and have
checked all wires and fuses, they all check out ok.
I am wondering how I could check the system to see if I can find any
problems with it. Any suggestions are appreciated
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Start by by-passing the OV protection system. Just
move the alternator b-lead wire to the other side
of the disconnect contactor so that the b-lead
is always hooked to the system.
If you're still in possession of the third, no-fault
found device, run it in that configuration for the
time being and see if things settle down.
How did you first become aware of the failure?
How did the failure manifest? Low voltage, over voltage?
Did you turn the alternator OFF while the engine
was running and the alternator was under load?
Bob . . .
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