2. Screw the brake disc to the hub using the wheel bolt (43a), inserting it into the hole located opposite the mounting bolt (9k).
3. Carefully use a screwdriver to pry the brake pads away from the brake disc.
4. Remove the hub cap (9e) using the puller (023) or knock it off with a rubber hammer.
5. Check the clearance by pulling and pushing the flange by hand. Rotate the hub slightly before each attempt.
6. In workshops, the axial clearance is measured using a device that has a small-travel dial indicator as a sensor. The sensor is installed with a 2 mm measuring rod recess. The specified value of the correct clearance is 0.01–0.02 mm.
Caution! During the individual measurement process, feeding the flange back and forth along the axis, do not rotate the hub.
7. Loosen the Allen bolt (9i).
8. Tighten the split nut while rotating the hub until it can no longer be turned. Then loosen the nut by 1/3 of a turn and hit the axle (5a) with a plastic hammer to loosen the tension. Measure the clearance.
9. If necessary, repeat the gap setting. Mercedes prescribes setting the gap using a dial indicator. However, in practice (when there is no indicator) the gap is considered correct if the washer under the split nut can be moved back and forth with some effort using a screwdriver. If the washer cannot be moved, the split nut must be pressed or released.
10. Tighten the Allen bolt on the split nut to 8 Nm and check the bearing clearance again.
11. Fill the hub cap with approximately 15 g of high-temperature bearing grease up to the edge of the flange (arrow).
12. Replace the hub cap using special tool 025 or tap it in with a rubber mallet.
(Material created based on the website: MercedesMan.ru)
Attention! Be sure to replace a damaged cap, since moisture penetrates into the bearing through the joint leaks, causing it to quickly deteriorate.
13. Remove the wheel bolt from the brake disc.
14. Put the wheel on, observing the previously painted marking of its previous position. Screw the wheel on. Lower the car onto the wheels and tighten the wheel bolts in a cross pattern to a torque of 110 Nm.
15. Press the brake pedal repeatedly until the brake pads are in working position.