Forum PostBoat Maintenance: Serpentine Belt

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	Name:	CAT BOAT -
	Subject:	Serpentine Belt
	Date:	6/18/2016 1:28:19 PM

My 02 cents worth. Considering the rotation of the engine assembly, it appears that the problem starts at the water pump (circulating pump on the front of the engine. The one you reffered to as the main one. (Actually the main one is at the bottom, and is your crankshaft pulley). Prolly got a bearing going out in the pump itself. Also, prolly what happened to the other belt. Hope this help.