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Serpentine Belt postmortem....(and questions)

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Old Nov 24, 2012 | 11:54 AM
  #1  
BimmerJeeper's Avatar
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From: USA
Year: 1998
Model: Cherokee
Engine: 4.0L i6
Default Serpentine Belt postmortem....(and questions)

I never looked at the idler pulley's clearance before removing it. Here it is when I re-installed.
Should it be this close to the bracket? It seems awful close!


For the idler pulley, I was able to get a 5/8" wrench onto the bolt from underneath the car, and used a cheater bar.
I loosened the idler bolt only. And yes, I then realized that some ratcheting wrenches would be handy!

I have a 1998 with 125k miles. When I do my radiator, maybe I will replace the pulleys that should be.
Which pulleys are commonly changed out for preventative maintenance?

I had the tension at 180-200 lbs.


This one can easily be done by a beginner.
I really had to loosen the idler pulley even more to get the new belt back on.

This was the old belt:

Last edited by BimmerJeeper; Nov 24, 2012 at 08:24 PM.
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Old Nov 24, 2012 | 02:18 PM
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From: PA KOTUFU!
Year: 1998
Engine: 4.0L 162,000
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"I had the tension at 180-200 lbs."

That is way too high. FSM says IIRC 80-100 lbs.

With the supercharger i have 100-110 lbs and no slip or sequel.
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Old Nov 24, 2012 | 06:15 PM
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Can you double check?
Every online source tells me it's 180-200 lbs.

http://jeepsunlimited.com/forums/sho...45&postcount=3

Last edited by BimmerJeeper; Nov 24, 2012 at 08:25 PM.
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Old Nov 24, 2012 | 08:47 PM
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Does this tension look good?
I can't twist 90*. but more like 45*
https://www.youtube.com/watch?v=9c6Q...U&feature=plcp
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Old Nov 24, 2012 | 09:33 PM
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Use stethoscope to check:
idler and tensioner pulleys
alternator
waterpump
compressor
PS pump
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