Edd, If the belt is slipping there should be extra dust visible and often some belt squealing especially when the regulator is calling for high output.
Do you have a charge current monitor? Calypso's LINK 2000 monitor will often show a lower voltage early in the charge cycle when the current is at it's highest. This is also the time when we might hear a little belt squeal. Our alternator is at the high end of single belt capability so we change it often and when hearing belt squeal we back down the RPM for a few moments to allow the load to drop a few amps. Martin Calypso 1971 C&C 43 Seattle [Description: cid:D1BF9853-22F7-47FB-86F2-4115CE0BAF2F] From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Edd Schillay via CnC-List Sent: Thursday, July 31, 2014 11:13 AM 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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