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83hurstguy
07-20-2008, 09:32 PM
Our 1992 205 with 351 HO is making belt noise on startup... I looked at it today, and apart from seeing plenty of rubber dust on the front of the engine, this is what I see from a side angle...

https://netfiles.uiuc.edu/krooswyk/shared/webpics/MCbelt/DSC02359%20%28Medium%29.JPG

Note how the alternator seems to be way further forward than the other pulleys. Another picture..

https://netfiles.uiuc.edu/krooswyk/shared/webpics/MCbelt/DSC02360%20%28Medium%29.JPG?uniq=-rolk9k

I don't understand what could be wrong... I thought that maybe the alternator was on the wrong side of the lower bracket coming from the block, but attempting to try that did not look right at all (bracket was at very odd angle).

Here's the bottom adjuster coupling, alternator is on the front of the bracket.

https://netfiles.uiuc.edu/krooswyk/shared/webpics/MCbelt/DSC02361%20%28Medium%29.JPG?uniq=-rolk9e

Ideas? Experience with this problem? Any pics from other boats?

Thanks!!!

A picture of the complete engine for the heck of it...

https://netfiles.uiuc.edu/krooswyk/shared/webpics/MCbelt/DSC02363%20%28Medium%29.JPG?uniq=-rolk98

JimN
07-20-2008, 09:40 PM
If the pulleys are still clean and smooth, it really shouldn't grind the belt much. If the pulleys have rust and peeling chrome plating, the belts can't last long.

If the pulleys aren't clean and smooth, I think they go for about $25 each, or you can find a plating shop to do it.

83hurstguy
07-20-2008, 09:52 PM
If the pulleys are still clean and smooth, it really shouldn't grind the belt much. If the pulleys have rust and peeling chrome plating, the belts can't last long.

If the pulleys aren't clean and smooth, I think they go for about $25 each, or you can find a plating shop to do it.

Thanks... the pulleys are in fine shape and shouldn't be the problem. Seems to be that alternator kicked way off wearing the edge of the belt.

TMCNo1
07-20-2008, 10:23 PM
The alternator should be in front of the bracket as you show it. The one on our '89 isn't lined up perfect either, but it still has the original belt on it after 20 years and is not worn or cracked and there is very little dust to be seen. Yes, I do carry a spare in the boat.

83hurstguy
07-20-2008, 10:35 PM
The alternator should be in front of the bracket as you show it. The one on our '89 isn't lined up perfect either, but it still has the original belt on it after 20 years and is not worn or cracked and there is very little dust to be seen. Yes, I do carry a spare in the boat.

Thank you! I'll check for straightness of that bottom bracket, make sure it's the right belt (somebody else replaced it before we got it, maybe it's a touch too wide), and go from there.

That misalignment still bugs me... oh well... engineer must have been cheap labor in that department at Indmar...

JimN
07-21-2008, 12:06 AM
If the alternator and crank pulleys line up and the water pump is the only one that's not, you could find out how far off line it is and make a plate, to be positioned behind the water pump's pulley. You don't want to make it too thick but a little goes a long way in cases like this.

GuitsBoy
07-21-2008, 06:28 AM
Really dosnt look too bad to me. Just tightn the belt up a little bit to get rid of the startup squeel.

83hurstguy
07-21-2008, 02:02 PM
The belt may be too thick then... as I have rubber dust everywhere. Order the correct belt from the dealer and see what happens I suppose...

The water pump and crank pulleys are spot on, it's the alternator presenting the problem.

GuitsBoy
07-21-2008, 02:03 PM
Could just be old and drying out a bit. Replace it, its not too much money for the added piece of mind.