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Old 11-21-2010, 06:01 PM   #1
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serious clunking noise coming from right front wheel. ujoint? what is it?

so whenever I turn the tire or go up and over curbs I get a serious clunking noise coming from the wheel area of the right front side. I had the wheel on and looked at it, things to note are that the u joint on the brake side is bone dry while it's otherwise snowing out and the axle side is wet; while the driver's side is dryer than the axle side of the ujoint, but still not bone dry, some wet spots (so I'm thinking that the ujoint can be generating heat). ALSO, the part that is circled with the arrow is a cap that seems to be a plastic guard that keeps grime out of the axle. that part is loose and slides on the axle shaft. The same cap on the other side doesn't move. I'm about to jack the Jeep up and take a look. what are your thoughts????
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Old 11-21-2010, 06:03 PM   #2
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oops, it's a 2000 wrangler sport 4.0 with 139k miles. it makes the same sound independant of it being in 2hi 4hi or 4lo. i doubt that it's a bearing as it doesnt make a movement or sound when I try and shake the tire/wheel.

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Old 11-21-2010, 06:08 PM   #3
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As far as the plastic guard sliding, it shouldn't do it too easily by hand. If it's really easy to move, requiring almost no effort, then it's not really working as intended. It's there to keep larger objects from finding their way into the axle tube, but doesn't in any way keep water, sand, or fine mud out. This is why it's highly recommended to drain and fill your diff if you do a lot of water crossing up to that point and deeper.

I've got a set of alloy outer axle seals up front. It's an extra nipple to grease, but does a better job of keeping water out.

Alloy USA Grande Axle Tube Seals, Red*ALL-11105 by the Jeep Specialists | Morris 4x4 Center
(wrong link for 27 spline axle shafts, but you get the idea)
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Old 11-21-2010, 06:41 PM   #4
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Thanks Keebler, I played around with both wheels, and it's the passenger side one, the drivers makes no noise or problems, but the passenger will bind if the wheel is turned all the way and then it wont roll. if I bring it straighter it will roll with resistance and then still pop with extra resistance before the pop. It looks like there's a bit of play in the u-joint bushings, so I'm going to replace the ujoint and hope that works. it seems to be only then that it makes the noise.
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Old 11-21-2010, 08:48 PM   #5
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here's a problem that I've ran into. I've taken the wheel off, the brake caliper, but I cant get the break disk off. how do I do it? Haynes manual says to just pull it off, but that's not happening, I hit it all over on every side with a hammer to loosen it. I tried getting the center hub nut off by prying with a jack handle and broke my socket wrench with using too much torque.... so, Ideas??? how to get the disk off? or just how to get to the ujoint?
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Old 11-21-2010, 09:12 PM   #6
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my rotor was stuck also.....take a wire brush and scrub the crap outta the hub/rotor area and put some rust buster on it keep working it with a big screwdriver behind the rotor as you rotate it round and round...it will come loose/off sooner or later.
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Old 11-21-2010, 09:27 PM   #7
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Yeah the rotors can come off hard sometimes. I usually take the tire iron and slip it between the caliper bracket and the rotor give it a pry then spin the wheel and do it again in a few different spots. Before you put it back on some anti seize can help with this problem in the future.

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