Replacement: wheel bearing – Mercedes W211. Tip from AUTODOC experts:
Do not re-use the bearing assembly of your Mercedes W211 car.
The wheel hub bearing replacement procedure is identical for both wheels on the same axle.
Please note: all work on the car – Mercedes W211 – should be done with the engine switched off.
Carry out replacement in the following order:
Step 1
Open the bonnet.
Step 2
Connect the service equipment and switch the SBC system to service mode.
Please note!
Some vehicles may not have the SBC system.
Step 3
Unscrew the brake fluid reservoir cap.
Step 4
Secure the wheels with chocks.
Step 5
Loosen the wheel mounting bolts. Use wheel impact socket #17.
Step 6
Raise the front of the car and secure on supports.
Step 7
Unscrew the wheel bolts.
AUTODOC recommends:
Important! Hold the wheel while unscrewing the fastening bolts. Mercedes W211
Step 8
Remove the wheel.
Step 9
Detach the connector of the brake pad wear sensor. Use round-nose pliers.
Step 10
Spread the brake pads. Use a crowbar.
Step 11
Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray.
Step 12
Unscrew the brake caliper fastening. Use a combination spanner #17. Use a drive socket #13. Use a ratchet wrench.
Step 13
Remove the brake caliper.
Replacement: wheel bearing – Mercedes W211. Tip:
Tie the caliper to the suspension or to the body with a wire without disconnecting from the brake hose to prevent depressurization of the brake system.Make sure that the brake caliper is not hanging on the brake hose.Don't press the brake pedal after the brake caliper has been removed. As a result, the piston can fall out from the brake cylinder, and brake fluid leakage and depressurization of the system may occur. Check the brake caliper bracket, brake caliper guide pins and boots. Clean them. Replace, if necessary.
Step 14
Treat the brake caliper piston. Use a nylon cleaning brush. Use a brake cleaner.
AUTODOC recommends:
Replacement: wheel bearing – Mercedes W211. After applying the spray, wait a few minutes.
Step 15
Install the brake caliper wind back tool.
Step 16
Remove the brake pads.
Step 17
Disconnect the brake pads wear sensor.
Step 18
Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
Step 19
Unscrew the caliper bracket fastening. Use a drive socket #21. Use a tap wrench. Use a ratchet wrench.
Step 20
Remove the caliper bracket.
Step 21
Clean the brake disc fasteners. Use a wire brush. Use WD-40 spray.
Step 22
Unscrew the brake disc fastening. Use Torx T30. Use an impact screwdriver.
Step 23
Remove the brake disc.
Step 24
Remove the wheel hub nut cap. Use a crowbar. Use a hammer.
Replacement: wheel bearing – Mercedes W211. Tip from AUTODOC experts:
In some cars, the wheel hub nut is not protected with a cap.
Step 25
Loosen the wheel hub fastening nut screw. Use HEX No.H5. Use a ratchet wrench.
Step 26
Unscrew the hub nut.
Step 27
Remove the fastening nut.
Step 28
Remove the hub and the bearing together, since they are a sealed unit.
Step 29
Clean the wheel hub mounting seat. Use all-purpose cleaning spray.
Step 30
Remove the wheel hub bearing.
Step 31
Remove the old O-ring. Use a crowbar.
Step 32
Remove the wheel hub bearing.
Step 33
Clean the hub bearing mounting seat.
Step 34
Pull the bearing inner race out of the wheel hub. Use a bush and bearing driver set.
Step 35
Pull the bearing inner race out of the wheel hub. Use 3-Arm Gear Puller. Use a bush and bearing driver set.
Step 36
Clean the hub. Use a wire brush. Use all-purpose cleaning spray.
Step 37
Treat the mounting seat of the bearing assembly. Use a multipurpose grease.
Step 38
Install the inner race of the wheel bearing into the hub. Use a bush and bearing driver set.
Step 39
Install the inner race of the wheel bearing into the hub. Use a bush and bearing driver set.
Step 40
Treat the mounting seat of the bearing assembly. Use a multipurpose grease.
Step 41
Install a new wheel hub bearing.
Step 42
Treat the mounting seat of the bearing assembly. Use a multipurpose grease.
Step 43
Install the new O-ring. Use a bush and bearing driver set.
Step 44
Treat the mounting seat of the bearing assembly. Use a multipurpose grease.
Step 45
Install a new wheel hub bearing.
Step 46
Treat the mounting seat of the bearing assembly. Use a multipurpose grease.
Step 47
Install the new wheel hub together with the bearing.
Step 48
Install the fastening nut.
Step 49
Screw on the hub nut.
Step 50
Install the cap of the hub nut.
Step 51
Clean the hub. Use a wire brush. Treat the contacting surface. Use copper grease.
Step 52
Install the brake disc.
Step 53
Tighten the brake disc fastening. Use Torx T30. Use a torque wrench. Tighten it to 8 Nm torque.
Step 54
Clean the brake caliper bracket from dirt and dust. Use a wire brush. Use a brake cleaner.
AUTODOC recommends:
Replacement: wheel bearing – Mercedes W211. After applying the spray, wait a few minutes.
Step 55
Install the brake caliper bracket.
Step 56
Tighten the brake caliper bracket. Use a drive socket #21. Use a torque wrench. Tighten it to 115 Nm torque.
Step 57
Install the brake pads.
Step 58
Connect the brake pads wear sensor.
Step 59
Press in the brake caliper piston. Use brake caliper wind back tool.
Step 60
Install the brake caliper and fix it. Use a combination spanner #17. Use a drive socket #13. Use a torque wrench. Tighten it to 35 Nm torque.
Step 61
Attach the connector of the brake pad wear sensor.
Step 62
Remove the wheel hub nut cap.
Step 63
Install the wheel.
AUTODOC recommends:
Important! Hold the wheel while screwing in the fastening bolts. Mercedes W211
Step 64
Screw in the wheel bolts. Use wheel impact socket #17.
Step 65
Adjust the wheel bearing. Use a combination spanner #32.
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