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Alternator Woes [message #352629] Sat, 07 March 2020 18:36 Go to previous message
Bruce Hart is currently offline  Bruce Hart   United States
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma:
Senior Member
I had thought that my alternator was fixed last fall but no it isn't working again.
What is going on?
Tested alternator at NAPA. Tested ok with DC output at 14.6 volts. That is a good thing!!
Batt voltage at 12.57
Wire to #1 post on alternator at 12.1 volts (Ignition on)
Wire to #2 post on alternator at 12.40 Ignition off 12.35 ignition on

Started engine and took reading at isolator center post and got 2.0 volts.
Disconnected lead to output post on alternator. Installed test lead on output stud of alternator, ran engine, and measured 40.0 volts. Revved up the engine and overloaded meter setting of 60 volts.

Isolator diodes checked out good.

Anyone have any ideas?

The alternator output is there I just can't get it where it is needed.



Bruce Hart 1976 Palm Beach 1977 28' Kingsley La Grange, Wyoming
 
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