Alternator Picture?

[AKimmel]

I know this is a long shot, but I think my belt jumping problem is a misalignment and not the tensioner. One of the things I changed on my motor when I got it was a reman alternator. After looking up the one I got on the partsamerica website, it lists probably 50 applications. If you look up a more expensive one, it only lists 90-93 trucks. I think its possible that the alternator I have may be offset slightly too far foward causing my belt to ride against the front of my fan pulley. I know remaned parts get thrown in one catagory sometimes over looking very minor differences, like steering boxes for our trucks. There are 4. 25 lock to lock and I think the other is 3. 5 lock to lock, but they don't list that as a difference when buyin one. So could one of y'all please post a picture of your alternator (original if possible) mounted on your truck so I can see if there is some kind of diffence. Thanks, Alex

 

[rlyons]

Here's mine.



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Looks pretty much the same to me.



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[AKimmel]

Thanks! I can't see a difference either, but it would probably only be about an 1/8 inch. I'm gonna play with it this weekend and try and figure something out. I don't want to just start throwing parts at it, or I would definitely try a tensioner. But, they are a little to pricy to try for the heck of it, especially since I can't find any wear on mine, and mine isn't jumping at the A/C compressor.

 

[Steve Graham]

If you want to check alinment run a straight edge or use string on the face of the belt, side to side, up and down.

 

[PToombs]

AK, look at the tensioner. Is the belt running in the middle, or off to one side a little? On the trucks, it seems the pulleys go. On the equipment at work (case) and my truck, it seems to be the tensioner itself. There is a plastic (teflon, poly, somthin') washer/ bushing in side that wears, letting the arm move out causing a misalignment. The belt walks off a little on the pulley, then it walks 1 rib on the alternator, then 2, then 3, then it cuts 1 or 2 off. See where this is going? :{

If the tensioner goes, you can see the pulley is twisted a little.

Hope this helps,

 

[AKimmel]

Here's mine.



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Looks pretty much the same to me.



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After messing with it today, it still comes down to the alternator is too far foward. I'm wondering if I have the wrong pulley. Looking at your pictures, it looks like your pulley is a larger diameter and sits back a little bit more than mine. Whats the outside diameter of your pulley? Thanks, Alex

 

[dpuckett]

Alex, now that you mention it, it does look like yours is a little forward of the alternator rlyons pictured. Did they put your old pulley on the "new" alternator?



It's a little late for you now, but this is precisely why I prefer to have stuff rebuilt locally rather than get some unknown crapola from the local yay-hoo parts store. But it is convenient to buy it, throw the new one on, then return your core, if you dont have a second vehicle.



Daniel

 

[AKimmel]

I did reuse my original pulley, because the rebuilt one came with a 2 groove v-belt pulley on it. But, I suspect the alternator was changed before I got the donor truck, and that's when the factory correct pulley got gone. I do use a guy locally to rebuild stuff for me on things that I want to keep my original part, but I also like the forever warranty you get from a parts store.