Carrier Bearings or Rear Wheel Bearings? - JeepForum.com
 
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post #1 of 5 Old 04-27-2009, 09:49 PM Thread Starter
StrokedWJ
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Carrier Bearings or Rear Wheel Bearings?

The WJ's started making some loud thumping noises when slowing down and traveling at parking lot speeds. It kinda sounds like when you'd put a baseball card in the spokes of a bicycle tire. The noise isn't nearly as loud when accelerating or driving at normal speed (~45mph). I drained and replaced the fluid in the rear diff over the weekend. I filtered the old gear oil as it drained and didn't fine anything abnormal. Inside the diff everything appeared ok, so I'm leaning towards wheel bearings. I know ifs difficult to diagnose over the internet, but do you think I'm on the right track?


2000 WJ 4.5L - Stroked, Locked, & Long-Armed
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post #2 of 5 Old 04-27-2009, 11:07 PM
CULate
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I have a similar problem with a ZJ. I had new U-Joints installed. Mine has been doing it since I bought it a few months ago & hasn't gotten any worse & no leaks. As a rule if an axle bearing starts to go axle seals will start leaking.
I hope some answers come through so I don't have to take mine in to the shop to find out. But I fortunate I have a real good & reasonable shop to go to.
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post #3 of 5 Old 04-28-2009, 12:24 AM
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Quote:
Originally Posted by CULate View Post
I have a similar problem with a ZJ. I had new U-Joints installed. Mine has been doing it since I bought it a few months ago & hasn't gotten any worse & no leaks. As a rule if an axle bearing starts to go axle seals will start leaking.
I hope some answers come through so I don't have to take mine in to the shop to find out. But I fortunate I have a real good & reasonable shop to go to.
that is not a good rule, with my jeep the bearings are gone long before the seals.

I would start by checking and making sure the wheels and axle shafts are still strait.

Brian
95 ZJ, 5.2 V8,160,000 miles
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I am not one to be changing lanes at 70 mph on a lifted truck on 33's, but since I am in Miami, I have to be prepared for the continuous influx of new drivers whose previous ride was a bicycle with wooden wheels.
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post #4 of 5 Old 05-06-2009, 05:05 PM Thread Starter
StrokedWJ
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Some new developments, I changed the diff fluid and went through the car-wash (really doubt that had anything to do with it) last week. The noise went away/got a lot quieter for a couple of days. Now its changed to a loud buzzing and vibration when accelerating between 25-40 MPH. Its worse going up hills. I'm hoping its something with the rear axle since I've been slowly building a 9" to swap in...

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post #5 of 5 Old 05-07-2009, 01:44 PM Thread Starter
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bump...any ideas? I'm planning to put the rear end up on jackstands today and get it up to speed to see if I can visually see anything vibrating or making noise.

2000 WJ 4.5L - Stroked, Locked, & Long-Armed
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