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Old 08-21-2020, 07:35 AM
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edwardc edwardc is offline
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Quote:
Originally Posted by Boat View Post
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.

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.
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