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 12
Remove the brake pads.
Step 13
Clean the brake caliper bracket fasteners. Use a wire brush.Use WD-40 spray.
Step 14
Unscrew the caliper bracket fastening.Use a drive socket #18.Use a tap wrench.Use a ratchet wrench.
Step 15
Remove the caliper bracket.
Step 16
Clean the brake disc fasteners.Use a wire brush.Use WD-40 spray.
Step 17
Unscrew the brake disc fastening.Use Torx T30.Use an impact screwdriver.
Step 18
Remove the brake disc.
Step 19
Remove the wheel hub nut cap.Use a crowbar. Use a hammer.
Replacement: wheel bearing – Mercedes W203. Tip from AUTODOC:
In some cars, the wheel hub nut is not protected with a cap.
Step 20
Loosen the wheel hub fastening nut screw.Use HEX No.H5.Use a ratchet wrench.
Step 21
Make a mark on the hub nut.
Step 22
Unscrew the hub nut.
Step 23
Remove the fastening nut.
Step 24
Remove the wheel hub bearing.Use a telescoping magnet.
Step 25
Remove the wheel hub together with the bearing.
Step 26
Grip the wheel hub together with the bearing in a vice.
Step 27
Remove the old O-ring.Use a crowbar.
Step 28
Remove the wheel hub bearing.
Step 29
Loosen the vice and remove the hub.
Step 30
Pull the bearing inner race out of the wheel hub. Use a bush and bearing driver set.
Step 31
Pull the bearing inner race out of the wheel hub. Use 3-Arm Gear Puller.Use a bush and bearing driver set.
Step 32
Clean the hub.Use a wire brush.Use all-purpose cleaning spray.
Step 33
Treat the mounting seat of the bearing assembly.Use a multipurpose grease.
Step 34
Install the inner race of the wheel bearing into the hub.Use a bush and bearing driver set.
Step 35
Treat the mounting seat of the bearing assembly.Use a multipurpose grease.
Step 36
Install the inner race of the wheel bearing into the hub.Use a bush and bearing driver set.
Step 37
Place the hub in the vice.
Step 38
Treat the mounting seat of the bearing assembly.Use a multipurpose grease.
Step 39
Install a new wheel hub bearing.
Step 40
Release the vice and take out the wheel hub together with the bearing.
Step 41
Install the new O-ring.Use a bush and bearing driver set.
Step 42
Clean the fasteners of the brake disc cover.Use a wire brush.Use WD-40 spray.
Step 43
Unscrew the fasteners of the brake disc cover.Use a drive socket #E12.Use a ratchet wrench.
Step 44
Remove the brake disc cover.
Step 45
Clean the wheel hub mounting seat.Use all-purpose cleaning spray.
Step 46
Install the brake disc cover.
Step 47
Screw in the fasteners of the brake disc cover.Use a drive socket #E12.Use a torque wrench.Tighten it to 11 Nm torque.
Step 48
Treat the mounting seat of the bearing assembly.Use a multipurpose grease.
Step 49
Install the new wheel hub together with the bearing.
Step 50
Install a new wheel hub bearing.
Step 51
Install the fastening nut.
Replacement: wheel bearing – Mercedes W203. Tip:
Insert the hub nut according to the mark.
Step 52
Screw on the hub nut.
Step 53
Install the cap of the hub nut.
Step 54
Clean the hub.Use a wire brush.Treat the contacting surface.Use copper grease.
Step 55
Install the brake disc.
Step 56
Tighten the brake disc fastening.Use Torx T30.Use a torque wrench.Tighten it to 9 Nm torque.
Step 57
Clean the brake caliper bracket from dirt and dust.Use a wire brush.Use a brake cleaner.
AUTODOC recommends:
Replacement: wheel bearing – Mercedes W203. After applying the spray, wait a few minutes.
Step 58
Install the brake caliper bracket.
Step 59
Tighten the brake caliper bracket.Use a drive socket #18.Use a torque wrench.Tighten it to 75 Nm torque.
Step 60
Install the brake pads.
Step 61
Install the brake caliper and fix it.Use a drive socket #12.Use a torque wrench.Tighten it to 35 Nm torque.
Step 62
Attach the connector of the brake pad wear sensor.
Step 63
Remove the wheel hub nut cap.
Step 64
Install the wheel.
AUTODOC recommends:
Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. Mercedes W203
Step 65
Screw in the wheel bolts.Use wheel impact socket #17.
Step 66
Adjust the wheel bearing.Use a combination spanner #32.
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Tips & tricks for your MERCEDES-BENZ C-Class Saloon (W203)
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