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  #1  
Old 01-28-2008, 04:37 PM
LaRondo's Avatar
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W126 front wheel bearing

I am trying to adjust the front wheel bearing. There is too much play at the right front wheel, which is possibly the cause for some vibration I am getting at certain speeds.

Now, I am looking at the cap covering the center of the spindle and can't see how to take it off.

Is it screwed on or does it pop off? Any special tools required?

Anybody with a quick reply?

Thanks

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Old 01-28-2008, 04:40 PM
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The bearing cap just pushes on - use either a big pair of pliers to grab it and wiggle it off or a wide bladed screwdriver to pry it off. If the wheel is loose, loose the bearings may be bad.
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  #3  
Old 01-28-2008, 04:45 PM
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I am wanting to tighten up the bearing, it has too much play already.

Thanks, I will try and pop off the cap, I thought it is supposed to go this way, but it sits on real snug.
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Old 01-28-2008, 04:50 PM
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I think he means lose the wheel bearings (replace them) because they are probably damaged from being too loose
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  #5  
Old 01-28-2008, 05:01 PM
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I used a screwdriver with a thin blade and pried the cap off rotating the wheel so that I did not jam the cap against the side of the wall.

If you cannot get rid of the vibration with a small adjustment, then I think you should replace the bearing. It is a good time to remove them and grease them up when you are in there...
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Old 01-28-2008, 05:02 PM
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After you remove the wheel cap and brake caliper. Loosen hex, socket screw of clamping nut. Then while simultaneously rotating hub to the extent that the hub will be hard to turn, slacken clamping nut again for aprox 1/3 turn and release tension by hitting wheel spindle with rubber body hammer.

I do encourage you to remove the bearings, degrease and take a careful look at them.
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Last edited by TX76513; 01-28-2008 at 05:11 PM.
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Old 01-28-2008, 05:10 PM
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I have not heard of anyone adjusting the wheel bearing, was it worked on recently? May want to go with a new one, and if you're going to do that... good luck.
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  #8  
Old 01-28-2008, 05:13 PM
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Quote:
Originally Posted by toomany MBZ View Post
I have not heard of anyone adjusting the wheel bearing, was it worked on recently? May want to go with a new one, and if you're going to do that... good luck.
That's pretty much right from the FSM - adjustment of wheel bearing. Less the dial caliper preload of 2mm
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  #9  
Old 01-28-2008, 11:05 PM
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Thanks for the input.

The cap came of as described. I've done many wheel bearings before just no MB's.

Well I turned it a little more snug, but it didn't solve the problem.

I'll make a separate post about the vibration.

Thanks.

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