WaaWaaWaa noise from Rear Axle - JeepForum.com
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post #1 of 5 Old 06-10-2013, 04:39 AM Thread Starter
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1999 XJ Cherokee 
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WaaWaaWaa noise from Rear Axle

I'm getting a noise that seems to be getting louder from the rear axle. will the diff bearings start to make noise or is this likely to be an axle bearing?

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post #2 of 5 Old 06-10-2013, 04:47 AM
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Most likely a drive shaft u-joint.


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post #3 of 5 Old 06-10-2013, 11:51 AM
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Try greasing the drive shaft u-joints. If the needle bearings are still intact (as in not turned to powder) that might clear it up.
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post #4 of 5 Old 06-10-2013, 01:07 PM
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Check and see if there is any play in the pinion yoke where the driveshaft u-joint attaches to the differential. Is there any oil leaking from the front of the differential?

Check also to see if the differential is filled with oil. Pull off the rubber plug on the back and check if the oil is up to the level of the hole. If not, top off with the recommended oil.
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post #5 of 5 Old 08-26-2013, 01:22 AM Thread Starter
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Turned out to be the axle. It was galled where the roller bearings ride on it. This being my first Jeep I was really surprised to see there is no inner race for the wheel bearings. Easy fix after a trip to the Pick a Part.
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