Quote:
Originally Posted by Boat
very true. after being on the hook a few days and then start the motor, the belt does alot of screetching. it gets under control with RPM around 1000 to 1300 or so.
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Screeching at startup, when the charging load is highest, is a pretty good sign of a worn belt. Replace it. Our 120A alternator puts out about 60A when starting with depleted batteries, which quickly tapers off to 30-40A. After 200-300 hrs of engine runtime, the belt will begin screeching at startup. A new belt cures it 100%. I always carry a spare.
Our big alt is only running at 50% of capacity (max), and even less normally, so it should run cooler and last longer.
Our external Balmar 612 regulator also has a "soft start" feature which ramps up the load slowly instead of slamming it on all at once, which helps the belt not squeal and last longer.