If the voltage is low due to belt slippage the noise should be very evident, black dust will be everywhere, and the alternator will get VERY hot from friction on the pulley. This will actually ruin the bearings sooner or later. As for not seeing 13.7 - do you mean that low or that high? I cannot think of any kind of battery that would be happy at that low of a finishing voltage. Even my oh-so-sensitive gels want to see 14.1 or so.
Joe Della Barba Coquina C&C 35 MK I From: CnC-List [mailto:[email protected]] On Behalf Of Ron Ricci via CnC-List Sent: Thursday, July 31, 2014 2:47 PM To: 'Edd Schillay'; 'CNC boat owners, cnc-list' Subject: Re: Stus-List Alternator? Belt? Suggestions? Edd, What kind of current reading do you have on each battery when charging? I've never seen 13.7 on my boat. Regards, Ron Ronald V. Ricci S/V Patriot C&C 37+ Bristol, RI [email protected]<mailto:[email protected]> From: Edd Schillay [mailto:[email protected]] Sent: Thursday, July 31, 2014 2:13 PM To: CNC boat owners, cnc-list Subject: Stus-List Alternator? Belt? Suggestions? Listers, Lately, when the engine running, I'm seeing the voltage reach 13.2 tops when it used to be much higher (13.7 to 14.0). Is this an alternator issue or is it the belt tightness? Any suggestions would be much appreciated. All the best, Edd Edd M. Schillay Starship Enterprise C&C 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log<http://enterpriseb.blogspot.com/>
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