1995 YJ 2.5L Idler Pulley Binding - JeepForum.com
 
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post #1 of 2 Old 04-12-2012, 08:28 AM Thread Starter
DaleG
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Join Date: Jan 2012
Location: Sydney
Posts: 5
1995 YJ 2.5L Idler Pulley Binding

My son attempted to change the serpentine belt on his 1995 YJ, and after he was done, the belt started getting eaten away.

I took a look at it, and it turns out the lower idler pulley/tensioner below the power steering pump wasn't turning at all.

It was hard against the tensioner/PS bracket when the idler bolt was tightened up.

I'm assuming some spacer/bushing fell out when he disassembled it, and he didn't notice.

I dug up a nut of appropriate thickness that was slightly loose on the bolt, and used it as a spacer, and things seem to work.

What is this part that is missing?

Is it this? http://www.factorychryslerparts.com/.../06503230.html

I looked in Chilton and AllData, and they don't seem to have the detail for this part. In fact, they don't show the particular serpentine belt routing for his Jeep at all (PS, no AC, but with two idler pulleys, one at the top, one below the PS pump). The manuals don't show any configs where the idler pulley moves on a tensioner bolt/collar. Is this an unusual configuration for some reason (or is it set up wrong somehow?)

It seems slicker to adjust the tension with just the tensioner/idler pulley via the adjuster bolt, rather than the setup where you move the PS pump or alternator to tension the belt. But I can't find any documentation of this particular arrangement, which worries me that something is set up wrong.

As his bearings felt a little rough on this idler as well, I picked up a new idler pulley for him.

The existing idler pulleys have a large flanged bushing that is on the front; this is supposed to go on the front of the pulley, correct? (I was wondering if *this* might be the spacer somehow, but I doubt it).

The new idler pulley came with a much smaller flanged bushing; the generic instructions with it indicate it's supposed to go on the front, but it seems to me that it would act as a nice spacer on the back (combined with the existing larger flanged bushing on the front). Also, out of the box, it was pushed into the back of the idler.

Any ideas on how to fix this up properly?

Here's photos of the belt routing, ps/idler, and the new idler/bushing:

http://imgur.com/a/WGAyZ

Thanks,

-dale

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post #2 of 2 Old 04-12-2012, 11:12 AM
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit
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bushing , idler pulley , tensioner pulley

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