A few weeks back I posted about my idler pulley failure...the tensioning pulley for the belt that drives my raw water pump.I've been having issues with a squealing belt .... hard to tell which one, but I am pretty sure it's the belt I replaced along with that idler pulley when I had my issue. Bought some belt conditioner and gave it a few shots... which solved it temporarily... and I am fairly certain the belt is tensioned correctly. I really don't want the thing strung so tight I could play an Eddie Van Halen guitar solo on it, but it's pretty tight. It does stop squealing once it gets warm... but still doesn't seem right that it squeals at all.
Today... I'm cleaning my bilge and I notice the brand new belt (literally maybe 6 hours on it) has cracks in it. Is this normal? I am starting to wonder if my raw water pump is really putting some strain on that belt? See pic:

Today... I'm cleaning my bilge and I notice the brand new belt (literally maybe 6 hours on it) has cracks in it. Is this normal? I am starting to wonder if my raw water pump is really putting some strain on that belt? See pic:

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