3YM30 Alternator Belt question

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Re: 3YM30 Alternator Belt question

Post by Ereiss »

Bob, I tried to find the conversion tool on the Gates site, can you send me the link?

I 1) tightened the alternator belt and 2) sanded the alternator and motor pulley. The slapping seems to have gone away. Can't tell you which had the bigger impact but the combination worked. Thank you all for your advice.
Ed Reiss
Being There
F38 - #154
out of Marion, MA

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Re: 3YM30 Alternator Belt question

Post by bobr »

Hi Ed,

You have to enter your data here, and it will give you the answers you need.


Click the button for "find parts by application" and then choose "power units and marine engines."

Your Yanmar model should pop up at that point.

Here are my results, and again I chose the Heavy Duty (green stripe) model:

Yanmar 3GM30F Diesel
Application Product Type Part No Comment
Belt Drive System
Front End Accessory Drive Components
W.P. FHP Medium Horse-Power V-Belt 6719
Alt. High Capacity V-Belt (Heavy-Duty) 9380HD
Alt. High Capacity V-Belt (Standard) 9380
Cooling System
Coolant Hose
Heat Exch. To Exhaust 90º Molded Heater Hose 28466
Bob R.
1995 Freedom 35 (Pedrick)
Old Saybrook, CT

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