Squeeling Belt Replaced - Still Squeels when AC On

[Traktor]

As stated, just had the belt replaced because it was slipping badly. Found one of the power steering pump bolts was loose, figured that was the cause. But now the new belt is slipping as soon as the AC is turned on. Does this mean I have something wrong with the AC pump?

Anyone with experience with this please let me know. About to go on a road trip and not looking forward to doing that without air conditionig.

Oh, 1995 Cherokee with the 4.0

Thanks

[morerpmfred]

Tighten the belt up a little more. Look at those bolts under the pump , figure it out.  Adjustment is under the power steering  pump , loosen those bolts up again then tighten up belt.  Once belt is tight enough tighten up the power steering bolts.

[Kanueh]

Serpentine belt or multiple belts?

[vantagetes]

Check your pullys. Also spec is 180-200lbs for deflection. Meaning to get the belt to deflect you need 180+lbs of force. Meaning TIGHT. I'm sure that's your problem.

Also to properly check you need to pre tighten, then run your belt for 5 minutes to break it in/seat it, it may be looser than you remember from when you first installed it.

[Immortal]

I am leaning towards the idler pulley.... but that's just experience on my XJ.... didn't squeal until I turned the AC on, then it sounded like a banshee.

[WagoneerXJ]

If the idler pulley bearing is bad,  pound it out, and hammer in a new one it's usually an SKF 6203RSJ bearing....