Tracking problems in serpentine belt

BUCHERBP

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JEEP CHEROKEE

I have a 1992 Jeep Cherokee with a 4.0L engine

I was replacing my serpentine belt because of a horrible squeal that came about very slowly over the span of a few months.

When I was replacing the belt I noticed that the belt was not tracking correctly. The belt rubs against my engine block between the CS and fan pulleys.

It does this because it looks like it is sliding off the back of the "fan pulley". I put that in quotes because I dont know what its called. And apperantly neither does anyone else.

I assumed that this was happening because the pulley which is connected to the fan is being worn and is angled toward the engine block.

When I called around, nobody could find a replacement pulley for me. My repair manual calls this pulley a "fan bearing hub." Still nobody can find it for me.

Also, could I be wrong? Is there a way to adjust the tracking of these parts? Anything helps.

Brandon

7 Replies

SERVICE WRITER

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9,123 POSTS

I would start by pulling the belt off or loosening enough so there is no tension. Wiggle each pulley and see if there is any play. Also turn each pulley feeling for any roughness.

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Tuesday, July 31st, 2007 AT 10:42 AM

BUCHERBP

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I did that, took the idler pulley off. I'm confident that the problem is in the fan pulley, I can see the belt running off the back of the pulley.

Either the pulley is misaligned or it is worn, creating an angle which runs the belt back toward the engine block.

So my question is really, is there a way to adjust that fan pulley, or where do I find that part so that I can replace it.

B

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Tuesday, July 31st, 2007 AT 11:37 AM

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Brandon,

Two suggestions on this. First, go to the dealer and ask to see an exploded view to see what you need. The terminology can be misleading when its called different names. Two, post a few pics and maybe I can identify it.

I'm thinking the pulley just slips over what part you need, but I can't find a clear pic or diagram or info that gives me enough answers on this.

https://www.2carpros.com/articles/mitchell1eautorepair-car-repair-manuals

Is the fan clutch in front of the pulley?

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Wednesday, August 1st, 2007 AT 5:37 AM

BUCHERBP

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Yes, That is the pulley I am talking about, the Fan clutch is attached to it.

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Wednesday, August 1st, 2007 AT 10:54 AM

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Okay, I talked to the local dealer to verify what I thought. There is a bearing that the pulley mounts to. I seriously doubt the aftermarket carries it, so call the dealer to get it.