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Old 04-27-2014, 09:26 PM
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99 grand cherokee limited

Can anyone tell me where to buy new front diff gears and pinion.Im not sure of the gear ratio either.Its the quadra trac 2. I put new half shafts ,new hubs.Its making a loud humming noise when driven and clicks when i back up and turn the wheels.mind you the shafts have been checked and they are fine.So i was told it was the diff gear and pinon.Any help would be great thanks guys.
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Old 04-28-2014, 05:01 AM
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Re: 99 grand cherokee limited

I presume that the noise was there before changing any front drivetrain part? Did you already have a look at the ringgear and pinion for wear/damage? Could also be a diff bearing, but even one of the front prop shaft joints or T-case.
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Old 09-15-2014, 03:31 AM
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Ok replaced prop shaft bearing, still doing it. Making the same clicking noise in the front of my jeep. It's got to be the ring and pinion. So ill be getting that this week and installing. I need a good site reference to show me how to adjust the play. If anyone has a good site that would be very helpful.
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Old 09-15-2014, 11:12 AM
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Re: 99 grand cherokee limited

I can send you the service manual pages regarding this tonight. Are you sure that the noise isn t coming front a prop shaft joint?
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Old 09-15-2014, 11:28 AM
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Yea replaced the prop shaft bearing in the back didn't notice the front bearing being bad, just the rear prop shaft bearing
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Old 09-15-2014, 09:08 PM
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Re: 99 grand cherokee limited

Did you have a look inside the front diff to see if there is any strange wear or damage to the ring and pinion gear? Did you already remove the front prop shaft and drive to see if the noise changes?
Clicking noises could eventually come from the T-case as well.
When you change the ring and pinion gears, you will also put new bearings in there right. In attachment the adjustment procedure of the ring and pinion.
Attached Files
File Type: pdf Front diff adjustments.pdf (782.8 KB, 1 views)
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Old 09-29-2014, 02:59 AM
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Yea going to get the ring and pinion today, I hope this is the last of my AWD problems. Are there bearings in the ring , do u mean on the pinion shift bearing
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Old 09-29-2014, 05:59 AM
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Re: 99 grand cherokee limited

No, i ment the differential bearings.
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Old 09-29-2014, 07:40 PM
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Ok crawled under my wj and noticed the half shaft that I put in over the summer has a ripped boot already. WTF , any ideas maybe just a bad boot but damn.
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Old 09-29-2014, 11:10 PM
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Re: 99 grand cherokee limited

Depending on how long the boot is broken, the joint can have some wear already. I would thoroughly inspect the joint. Any idea what could have caused the boot to break? Bad quality or something hit it? I would at least repair it as soon as possible.
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