How to Remove the Rear Brake Rotor on a W126

If the brakes on your Mercedes W126 are no longer responsive or are making a horrible squealing sound, it may be time to remove and replace the brake rotors. Brake rotor removal is a simple, straightforward process that requires the use of a few common tools and can be done by almost any amateur mechanic. With the right instructions you'll be able to remove the rear brake rotor on your W126 in a couple of hours.

Instructions

1

Park your W126 on a flat, paved surface. Raise the rear of the car with a jack and lower it onto jack stands. Unfasten the wheel lugs holding the wheel in place with a lug wrench or tire iron. Grip the wheel with both hands and pull it away from the car.

2

Put on a pair of safety glasses. Inspect the rotor for any noticeable wear, scarring, warping or severe rust. If the rotor shows any of these signs, it's likely time to replace it.

3

Remove the two caliper mounting bolts, located on the top and bottom of the caliper, with a 12 mm socket attached to a socket wrench. Lift the caliper off of the caliper mount, being careful not to damage the brake fluid line. Suspend the caliper out of the way with a bungee cord; do not let it hang freely by the brake fluid line.

4

Unscrew the two bolts holding the caliper mount in position with the 12 mm socket and socket wrench. Lift the caliper mount off of the rotor and set it aside.

5

Remove the rotor retaining screw holding the rotor in position with a large Phillips head screwdriver. If it's stubborn, apply anti-seize spray onto the bolt to help it along.

6

Grip the rotor with both hands and pull it away from the axle plate. If it's difficult to pull off, strike the back of the rotor with a rubber mallet to loosen it.