Join Date: Jun 2006
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Rep Power: 11
One advantage of the alternator tach I discovered the hard way. I have a freshwater cooled diesel and the alternator and the freshwater pump are run off the same belt. When going back and forth from the pump out dock, I noticed the tach reading flipping around a bit. Then it seemed to stick. Then I noticed the engine temp was 230 F.
Yes, I replaced the belt that had split longitudinally and wasn't turning the freshwater pump much. Now I know that if the tach wobbles...check the damn belt!