Dave: Since you're getting low voltage between the batt terminal and the alternator casing, it does sound irrefutable, it's kicking the bucket.
You can remove your alternator and take it to an auto-electric shop. New electronic module and bearings and you have a good as new rebuilt alternator. They're not as common as they used to be, but they specialize in repairs and re-building starters and alternators. If you know anyone with the classic car bug, they would likely be able point you in the right direction. There are cheaper options from auto parts stores, but I'd strongly recommend rebuilding it or replacing it with another Hitachi alternator. Eric On Fri, Aug 9, 2019 at 1:41 PM Dave S via CnC-List <cnc-list@cnc-list.com> wrote: > Hi All, > > I have a yanmar 2GMf20 with what I believe is the stock 55 amp > alternator. I noticed that my ACR was not combining batteries, which led > me to research a bit then measure the voltages on each bank, and then at > the alternator “Batt” terminal. > > Irrespective or RPM or battery state, the voltage at the BATT terminal > does not exceed 12.63 in operation. (he ACR therefore doesn’t “see” a > charging state) The belt is new and not slipping. > > This suggests and alternator or regulator problem. Does this make > sense? Is there anything else I should check? > > If I end up replacing the regulator, are there better options for this > alternator than stock? > > > > Thanks All. > > > > Dave > > > > > > > > Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for > Windows 10 > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
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