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post #1 of 10 Old 08-17-2012, 06:00 PM Thread Starter
mjackson92rs
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Bearing noise up front

I'm having trouble finding what sounds exactly like a bad wheel bearing noise in my Cherokee. I replaced both front wheel bearing assemblies with Timken units and still have the noise. Are there inner bearings inside the differential that could be bad? Or transfer case bearing?

The noise sounds exactly like a bad wheel bearing. A light growling/howling consistent with wheel speed.

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post #2 of 10 Old 08-17-2012, 07:22 PM
residentg
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I had a similar problem, it ended up being a worn out TC. It was hard to isolate, I hate to admit that I had the dealer take a look. The mechanic there is an ace, so I was ok with it.
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post #3 of 10 Old 08-17-2012, 11:12 PM
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Quote:
Originally Posted by residentg
I had a similar problem, it ended up being a worn out TC. It was hard to isolate, I hate to admit that I had the dealer take a look. The mechanic there is an ace, so I was ok with it.
Was your t-case getting really hot? Was there anything iffy in the fluid?

Ive got the same issue as the OP. Im hoping it gets worse so I can locate the issue.
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post #4 of 10 Old 08-18-2012, 06:41 AM
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The dealer diagnosed it, so I cannot tell. I can say that my front bearing were recently replaced, so it had to be something else. The TC has a chain and sprockets in it that wear out. My XJ has 150k miles. I can also say that the noise got worse while making slow left turns. Maybe that can help. The symptoms are that of a bad wheel bearing, so it is hard to isolate.
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post #5 of 10 Old 08-18-2012, 11:07 AM Thread Starter
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After looking it it some more I believe the noise is definatley from the transfer case. Whether its a bearing, bad chain, etc. im not too sure about. Another note, my TC took a quart of fluid so it was quite low, which probably caused this failure.
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post #6 of 10 Old 08-18-2012, 02:51 PM
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You can buy brand new TCs from quadratec
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post #7 of 10 Old 08-18-2012, 03:22 PM Thread Starter
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Looks like I'm going to go with a junkyard TC. Just a few questions. I have the NP242 and would like to keep it the same. My XJ is a 2000, is there any year range I need to stay within for changes in the 242 (such as spline count, etc)? Also, what is a reasonable price for a lower mileage used 242?
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post #8 of 10 Old 08-21-2012, 06:36 PM Thread Starter
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http://www.youtube.com/watch?v=LQPax...ature=youtu.be

Does this bearing sound bad? Pulled the front driveshaft just to investigate as the sound is driving me nuts
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post #9 of 10 Old 08-21-2012, 10:39 PM
AZ Jeff
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Quote:
Originally Posted by mjackson92rs View Post
http://www.youtube.com/watch?v=LQPax...ature=youtu.be

Does this bearing sound bad? Pulled the front driveshaft just to investigate as the sound is driving me nuts
If you pulled the front shaft and keep it in 2WD, the front output shaft will not turn, and so the noise should not be present if it's on that side of the XC.

AZ-Jeff
I don't own an XJ any longer, but I still think they are the best of all the Jeep products ever made. My XJ was my favorite vehicle in my 50+ years of driving.
So...I stick around and give advice.
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post #10 of 10 Old 08-22-2012, 06:04 AM Thread Starter
mjackson92rs
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Hmm. Sounds like I need to freshen up the bearings in my front axle then because it did make the noise with the diveshaft out.
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