Agreed, I experienced it 1st hand a few months after I had bought the boat a few years back.. I had a brain fart and turned the key to "off" while the engine was running. The diodes instantly fried, the alternator was toast / the charging warning was light on.
Then came the alternator saga: (As I was told) Apparently, it's kind of a big deal to replace the diodes. On an older alternator you might as well have the whole alternator rebuilt or buy a new one. I found some original Yanmar alternators but they were $700.00 (I did not know about Mastry Engine center at the time)Upon looking at local rebuild options they were in the $175.00 - 200.00 + range. Upon further research I found an authentic 55 Amp Hitachi (Yanmar's OEM)unit with the exact same connections, mounting, and pulley for 78 bucks shipped on ebay (Still available). That's the one I got. It actually charges the batteries better than the old one.. I guess it was the original and probably due for a rebuild anyway. Francois Rivard 1990 34+ "Take Five" Lake Lanier, GA Message: 5 Date: Sun, 17 Jul 2016 20:39:46 -0300 From: <amira...@bellaliant.net> To: <cnc-list@cnc-list.com> Subject: Re: Stus-List Relocating the Yanmar key Message-ID: <9BE1F845BD864E20A70EB87EE8B7BB8A@T60> Content-Type: text/plain; charset="utf-8" Didn?t I read somewhere on this group that it was a bad idea to turn off the key switch while the engine is running? Can someone confirm/deny this? Mike Amirault C&C33ii Lovely Cruise SMSC
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