Jube overcharging

[Garyraymond]

At idle it barely charges... At 700RPM it goes to 12-15 amps and stays there. At higher revs it will go to 20+ amps briefly then back to 12-15. I removed the field wire from the regulator and the charging stopped.... bad regulator? This is my third out of the box bad regulator if that is the problem. would a faulty battery cause this ? Where are all those amps going ? The regulator does get hot but haven't seen any smoke.I'm lost Gary

 

[souNdguy]

sounds like field contacts in the reg are stuck.

bad bats can will cause overcharging.. but usually not that much.. that sure sound slike a full fielded unit..

soundguy

 

[Garyraymond]

What do I do now. Buy another Regulator? This will be #4.

 

[lha]

Take it to a "mom&pop" starter-generator shop and they'll be able to figure it out easily,and fix it or sell you a good reg.---lha

 

[souNdguy]

i'd pop it apart.. you will likely see field contacts closed or welded..

soundguy

 

[Garyraymond]

I will take it off tomorrow and take it back to the generator shop. He has tested it twice and it checks out fine. He is a one man shop and been in business for forty years so he has o good reputation. I have to figure this out it"s a mystery. Gary

 

[Jon Hagen]

Check the voltage at the battery while it is charging that hard.
should be 7.2-7.4 for 6V or 14-14.5 for 12V.
The battery with the engine shut down,should check at 6.3 for 6V or 12.6 for a 12V.

Low voltage at the battery while charging or shut down means a shorted battery cell.

Higher than normal voltage when charging may mean a bad regulator, or a poor ground between the generator and regulator. Any resistance ,(poor ground) between the generator and regulator will send the regulator a false low voltage signal and cause overcharging.

 

[Garyraymond]

Is there a way to check the resistance in the groung wire between genny and regulator? I have checked for continuity and that is fine.