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Old 04-05-2010, 12:06 PM   #1
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wheel bearing/hub assembly

I was working on my favourite girl this morning, had the day off. I had the axle and hub assembly out and when I turn the the hub by hand it clinks like a ball is rolling around in there. Is that the sound of I need to replace the wheel bearing or is it suppose to make that noise.

everyone likes pictures so this is where the clink is comming from

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Old 04-05-2010, 12:40 PM   #2
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That is called a unit bearing hub and it is replaced as an assembly since it is not serviceable. Fortunately they are inexpensive ($120 or so IIRC) and easily replaced.

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Old 04-05-2010, 01:00 PM   #3
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So how do I know when it needs to be replaced?
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Old 04-05-2010, 01:08 PM   #4
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When it starts making noise or if there is any unwanted movement between the two halves of the unit bearing hub.
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Old 04-05-2010, 01:10 PM   #5
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Thanks Jerry, I can't hear anything while driving but when I took it out I was spinning it by hand and I could hear something rattling around in there. No movement between parts though.

Rockauto.com has a Timken bearing hub for $80 don't want to replace it if it doesn't need to be though.
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Old 04-05-2010, 02:14 PM   #6
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If you have it off and can hear sound it is only a matter of time until you must replace it. Just do it now and you will be better off. Napa has these with a lifetime warranty and have been better quality than other car parts stores.
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Old 04-05-2010, 06:45 PM   #7
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Timing for this thread couldn't be better. I have an interesting squeak coming from my driver side front when I turn to the left. I have also noticed that over the last few weeks as the squeak has gotten louder, my steering doesn't return to center smoothly anymore when coming out of a turn. Used to go right back to center easily, but now is choppy (smooth for an inch or 2, then resistance, then smooth, etc) till back to center. Was thinking it was time to replace the bearing, but can a worn bearing cause these steering issues as well? If i start to replace/repair, rather do it all in 1 day and be done with it rather than a little here, a little there. Oh, I have a 98' 4 banger, automatic trans, and completely stock.
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Old 04-05-2010, 10:05 PM   #8
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oh, and sorry for hijacking your thread...please forgive my manners.
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Old 04-06-2010, 08:26 AM   #9
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Snax24, I haven't had a wheel bearing on my wrangler go yet but on my other vehicles squeaking around turns is usually a good indication of a bad wheel bearing. Like said above, pull the tire and rotor off and spin the assembly by hand and wiggle it to see if it has play, if you hear anything or it moves I would replace it.
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Old 04-06-2010, 08:32 AM   #10
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usually its not necessary to pull the tire.

a fantastic way to check the wheel bearing is spin wheel tire w/ one hand and hold the spring with another. if there's a lot of vibes coming through the spring, the wheel bearing is bad. if none its good. (once you feel a bad one you'll know it forever.)
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Old 04-06-2010, 08:46 AM   #11
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^ hmm that's a good one. Nice work Mr. C
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Old 04-06-2010, 12:16 PM   #12
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Thanks a million. will do today.
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Old 06-07-2010, 01:08 PM   #13
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I know this is an old thread but i am having trouble getting the wheel hub assembly off and out to work on the u joint and such. I have all nuts and bolts off and it won't budge. Any thoughts?
Thanks in advance.
Travis
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Old 06-07-2010, 01:21 PM   #14
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Quote:
Originally Posted by ratzlofft View Post
I know this is an old thread but i am having trouble getting the wheel hub assembly off and out to work on the u joint and such. I have all nuts and bolts off and it won't budge. Any thoughts?
Thanks in advance.
Travis

use a longer socket placed between the axle yoke and axle tube area...so that when you turn the steering wheel the socket will push on the yoke and force the hub out.. repeat at different locations until out.
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Old 06-07-2010, 01:21 PM   #15
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If you have all (3) bolts removed and if you have air tools it's alot easier to use an air hammer/chisel.

Or you can try this method as well....
Unit Bearing - 1
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Old 06-07-2010, 01:59 PM   #16
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Quote:
Originally Posted by ratzlofft View Post
I know this is an old thread but i am having trouble getting the wheel hub assembly off and out to work on the u joint and such. I have all nuts and bolts off and it won't budge. Any thoughts?
Thanks in advance.
Travis
Here's a very good technique for you to try for that exact somewhat common issue... http://stu-offroad.com/axle/unitbear...tbearing-1.htm
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Old 08-26-2010, 08:33 AM   #17
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hub assembly

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Originally Posted by Jerry Bransford View Post
When it starts making noise or if there is any unwanted movement between the two halves of the unit bearing hub.

I recently installed 2 new hub assembly on both sides of my jeep and for the past few days I have developed a more sever shimmy. It seems to be coming from the passenger side. I took off my passenger side wheel this morning along with the brakes. My hub assmbly is mounted to the jeep right now and I can spin it. When I spin it right or back to the left, there is about an 1/8 to 1/4 inch of free movement before it catches and spins the axel. Is this normal or should it be a tight movement spinning from left to right with no deviation?

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