Hi,
I thought that there may be some previous reference to my problem but a "search" on this website failed to bring up anything useful.
My boat is 2003 305 with twin MAG 350's and Bravo 2 drives. Usually the engine room has been clean, however the serpentine belts have both started shedding recently - so much that I have to vacuum out the engine bay from time to time to remove all of the small pieces of rubber. I have checked the tension of the belts and both are a few millimeters - certainly not loose. There are signs of wear on both the outer edges of the belts and the inner grooves - but the wear is not showing the white reinforcement material (in the gooves) yet - which I was told to look for as the time to replace belts.
My mechanic said that this is not unusual but happens on some motors not others (but why mine and why now ??) and suggested that the most likely problem is rust formation on the pulley grooves which bites into the belts. His suggestion is to remove the belts then clean the (metal) pulleys grooves with a wire brush then paint the grooves with a rust covertor paint - then replace belts.
Looking at the pulleys there is little or no signs of any rust so I was just wondering if anyone else had a similar issue and how they solved it ??
Re Dean
I thought that there may be some previous reference to my problem but a "search" on this website failed to bring up anything useful.
My boat is 2003 305 with twin MAG 350's and Bravo 2 drives. Usually the engine room has been clean, however the serpentine belts have both started shedding recently - so much that I have to vacuum out the engine bay from time to time to remove all of the small pieces of rubber. I have checked the tension of the belts and both are a few millimeters - certainly not loose. There are signs of wear on both the outer edges of the belts and the inner grooves - but the wear is not showing the white reinforcement material (in the gooves) yet - which I was told to look for as the time to replace belts.
My mechanic said that this is not unusual but happens on some motors not others (but why mine and why now ??) and suggested that the most likely problem is rust formation on the pulley grooves which bites into the belts. His suggestion is to remove the belts then clean the (metal) pulleys grooves with a wire brush then paint the grooves with a rust covertor paint - then replace belts.
Looking at the pulleys there is little or no signs of any rust so I was just wondering if anyone else had a similar issue and how they solved it ??
Re Dean
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