eHow launches Android app: Get the best of eHow on the go.

Click Here
How To

How to Install Rear Wheel Bearings in a Mercedes

Contributor
By Vanessa Padgalskas
eHow Contributing Writer
(0 Ratings)

Replacing a wheel bearing is a difficult task, especially if you do not have much experience working on your Mercedes. Wheel bearings allow the wheel to turn smoothly with less heat and friction. The outer bearing can be removed and repacked without taking the wheel off. But the inner bearing has a grease seal that must be removed before the bearing can be replaced.

Difficulty: Moderately Challenging
Instructions

Things You'll Need:

  1. Step 1

    Park your car on a flat, level surface. Jack your car up and put it securely on jack stands.

  2. Step 2

    Remove the wheel and the hub by placing a screwdriver on the edge of the hub. Use a hammer and hit the hub out toward you.

  3. Step 3

    Use an Allen wrench to loosen the retaining nut.

  4. Step 4

    Remove two bolts that are 21 mm in size. The bolts hold the caliper on the steering knuckle. To remove the bolts use an impact wrench or 18-inch spanner. Make sure you get the right bolts. There are two others that are the same size that hold on the steering mechanism. You want to remove the bolts that hold the caliper.

  5. Step 5

    Compress the brake pads to remove the caliper. When removing the caliper, do not kink the brake line. Hang the brake line with a coat hanger or string. Do not let the caliper dangle on the brake line.

  6. Step 6

    Remove the outer bearing.

  7. Step 7

    Remove the grease seal with a screw driver and hammer. Pry it out and remove the inner seal. The grease seal is destroyed during removal, so remember to use a new seal after you have replaced the inner bearing.

  8. Step 8

    Clean out all the grease.

  9. Step 9

    Put a new inner bearing in and put a little more grease around the bearing.

  10. Step 10

    Put a new grease seal in place and tap down evenly. You may have to hit it hard. Use a 2-by-4 to get even force.

  11. Step 11

    Put the outer bearing in place.

  12. Step 12

    Put the retaining nut on the hub, and tighten it until the wheel won't turn at all. Once the wheel does not turn, loosen the nut 1/3rd of a turn. Tighten the Allen bolt to secure the nut. Make sure the wheel turns freely, but does not have any play, meaning the wheel does not wobble.

  13. Step 13

    Clean all grease out of the wheel hub.

  14. Step 14

    On the hub, there is a place to fill with grease. Fill it with grease to the line, but be precise and do not overfill it.

  15. Step 15

    Replace the hub and the wheel.

  16. Step 16

    Torque the wheel nuts to 50 foot pounds.

Tips & Warnings
  • Reference your Mercedes manual for pictures that will help you complete this process.
Subscribe

Post a Comment

Post a Comment

Related Ads

Local Listings
  • Have you done this? Click here to let us know.
I Did This
Get Free Cars Newsletters

Copyright © 1999-2009 eHow, Inc. Use of this web site constitutes acceptance of the eHow Terms of Use and Privacy Policy .   en-US Portions of this page are modifications based on work created and shared by Google and used according to terms described in the Creative Commons 3.0 Attribution License. † requires javascript

eHow Cars
eHow_eHow Cars