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Unread 10-17-2010, 05:25 PM   #1
Mighty Thor
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1999 XJ Cherokee 
 
Join Date: Jun 2006
Location: Great Falls Montana
Posts: 974
Rear axle bearing repair

My rear end has been making noise when I turn sharp in one direction and it is getting worse. Sounds like the tire is rubbing but I determined that it is not rubbing. Noticed that the drivers side was leaking a little gear oil so I pulled the axle. The bearing race in the axle tube spins easily and I slid it right out. I assumed it would be a press fit but mine turns easily. Is that normal and if not, what is the proper way to fix.

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Unread 10-18-2010, 08:03 AM   #2
tennesseewj
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2004 WJ 
 
Join Date: Aug 2007
Location: Knoxville, TN
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Quote:
Originally Posted by Mighty Thor View Post
The bearing race in the axle tube spins easily and I slid it right out.
The inner bearing race is a press fit on the axle shaft, but the outer bearing race is not a press fit into the axle tube.

If you're leaking gear oil, though, your axle seal is bad and you have to replace the bearing to replace the seal (yee-haw!)

This write up is decent:

JeepsLimited.com - D35C Axle Seal Removal and Replacement (WJ)

but you don't have to remove the differential cover unless you're due a fluid change anyway - but you probably already knew that since you pulled the shaft to check the bearing.
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Unread 10-18-2010, 11:21 AM   #3
Mighty Thor
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1999 XJ Cherokee 
 
Join Date: Jun 2006
Location: Great Falls Montana
Posts: 974
I did learn that the outer race is supposed to move and now I am at a complete loss as to what is causing the rubbing noise. with the driver's axle out, and turning the passenger side axle, the spider gears were a lot louder than I am used to so I guess the next step is to pull the cover and look for issues there. What should I be looking for in the diff? this is a 99 with a Dana 44 and limited slip rear.
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Unread 10-25-2010, 11:42 PM   #4
Mighty Thor
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1999 XJ Cherokee 
 
Join Date: Jun 2006
Location: Great Falls Montana
Posts: 974
After reading a bunch of other posts I decided to try to add some Mopar friction additive and see if that would quiet down the noise I had been hearing. Sure enough, after adding the additive to the Royal Purple synthetic gear oil the rubbing sound I had been hearing has started to go away. I will probably still need to pull the seals and replace them in a little while but at least I won't be redoing the whole rear end.
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