MF150 Altenator pulley question

[bubbanm]

Hi Everyone,
I have a MF150 that was converted from generator to altenator some time ago. My problem is that they moved the generator pulley over to the altenator. I am having trouble finding a pulley that is smaller so it will turn faster. It is a GM altenator. Does anyone have a part number for the smallest pulley available that will fit the tractor and altenator? Is it suppose to be 1/2" or 3/8" belt?

 

[Jim.ME]

Its not uncommon to use a Delco generator pulley on a Delco alternator to maintain belt width. They are often larger so the alternators turn slower requiring you to rev the engine more.

Well, the parts books shows 1/2" top width belts for both gas and diesel so, I believe your belt should be 1/2" top width. Just check your crank and water pump pulleys to confirm, I doubt any one has changed those.

Give this site's store a call, they may have a 2-1/2" OD pulley with a 1/2" belt groove that will work on a Delco alternator.

Do you have a shop that rebuild starters' generator, alternators, etc., often those shops stock them. That's where I got the last one I needed.

You can try searching A202 pulley, that is one outfit's part number.

 

[bubbanm]

Thanks, I will check it out