You can buy brand new yanmar alternators on ebay for ~$100. It sounds like the sensing line might just be bad. Where did you measure 15v? I would remove, clean and inspect all of the connections to the alternator. Then with the engine off verify that the voltage at the alternator matches the batteries.
35amp - http://pages.ebay.com/motors/link/?nav=item.view&id=280421618038&alt=web 105amp - http://pages.ebay.com/motors/link/?nav=item.view&id=280980656069&alt=web Josh Muckley S/V Sea Hawk 1989 C&C 37+ Yanmar 3HM35F Solomons, MD On Aug 14, 2014 9:50 AM, "Joel Aronson via CnC-List" <[email protected]> wrote: > All, > > My alternator is putting out too much voltage (15 volts) It s a 35 amp > Apco with an internal regulator. Rather than trying to have it rebuilt I > am thinking of buying a new alternator. Is there a higher amp alternator > that will fit the single pulley without breaking the bank? I don't want to > spend $700 for a Balmar. I have 2 house batteries and 1 start battery. > All are currently wet cell, but the next time around they will probably be > AGM. > > -- > Joel > 301 541 8551 > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > [email protected] > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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