Question about Motorcycles
The battery is not charging so I want to locate the alternator to test it It's a 2010 500cc liquid cooled motor. The original Agpro website seems to have gone.
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Posted on Jan 02, 2017
put a test meter (reading VOLTS DC in the 20V range) across the battery terminals. It should read 12V. Now start the engine. The reading across the battery should be 13-14V or so. If it is any less, then the alternator isn't charging. If it goes up a lot when you rev it then the voltage regulator is faulty. Hope this helps.
Posted on Mar 04, 2011
SOURCE: 1982 Yamaha XJ 550, the
It is corrected properly, right? + to the wiring harness and - to ground ... right? Are you certain about the rectifier? Is the battery charged at this time?
You know a alternator cannot make power unless you first put power into it ... right? Alternators (unlike most generators) are not self exciting. If your battery is weak or "dead", the alternator cannot make electricity to charge the battery. I don't know what the rating of your alternator is. Your battery should be fully charged before you do any more tests. If you have a 1 amp charger, allow at least 10 hours for a full charge. Don't cook your battery with a big, powerful, fast charging automotive battery charger.
Good luck with your repair ... I hope you find this response helpful.
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Posted on May 02, 2011
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