PeachParts Mercedes-Benz Forum - View Single Post - 190D Rear wheel bearing, what is involved in changing it?

markg612 · #3 01-13-2009, 06:48 PM

one of two ways:

On or off the car

Caliper and rotor off, center hub nut off.

On the car, special slide hammer the hub out of the bearing after removing the axle shaft retaining nut, remove snap ring then special fixture for the slide hammer again to pound the bearing out of the hub

Off the car, is a pressing matter.

Caliper and rotor off, center hub nut off, parking brake shoes off, 3 5-mm hex nuts that hold the backing plate off, all five links at the hub, off. This is a 1 hour job for the less rusty, more if heat and penetrate is needed. The magic trick here is to ensure the backing plate is broken loose from the hub center and spins freely, this will make link removal very easy. (bolt head access is simplified.)

Remove the entire carrier from the links. DO NOT loosen the middle forward link from the body, this is your toe adjustment for the rear axle. The head of the bolt has a fixed eccentric washer. A good mix of long Snap-On wrenches are helpful.

Once the hub is off the car with the brake plate, it's time for pressing. The better choice is a Benz dealership if you don't have an import centric independent shop that knows how to press it apart without snapping off the caliper ears. Some would argue cutting off the backing plate is helpful in the pressing process to simplify supporting the hub as you press, but the mercedes shops have the tooling to press the hub and bearing out without smashing the backing plate. Good luck with that one.

202 420 14 44--This is the plate for your car.

The hub is pressed out of the center of the bearing first, then the bearing is pressed out of the carrier after the snap ring is removed.

Press the new bearing into the carrier, slide the brake backing plate on the center of the carrier, then press the hub into the center of the bearing.

Reinstall the carrier in reverse.

Good luck!