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.
Step 17
Clean the brake disc fastener. Use a wire brush. Use WD-40 spray.
Step 18
Unscrew the brake disc fasteners. Use HEX No.H5. Use a ratchet wrench.
Step 19
Remove the fastening bolt.
Step 20
Release the parking brake adjuster. Use a flat screwdriver.
Step 21
Remove the brake disc.
Step 22
Clean the wheel hub. Use a wire brush.
Step 23
Treat the contacting surface. Use ceramic grease.
Step 24
Install a new brake disc.
Step 25
Install the fastening bolt.
Step 26
Tighten the brake disc fasteners. Use HEX No.H5. Use a torque wrench. Tighten it to 10 Nm torque.
Step 27
Set the parking brake adjuster in the correct position. Use a flat screwdriver.
Step 28
Install the brake caliper and fasten it.
Step 29
Install the fastening bolts.
Step 30
Tighten the brake caliper fasteners. Use a drive socket #17. Use a torque wrench. Tighten it to 65 Nm torque.
Step 31
Install the brake pads.
Step 32
Install the retaining spring of the brake pads.
Step 33
Install the brake pad guide pins. Use a pin punch. Use a hammer.
Step 34
Clean the brake disk surface. Use a brake cleaner.
Step 35
Treat the surface where the brake disc contacts the wheel rim. Use ceramic grease.
Step 36
Install the wheel.
AUTODOC recommends:
Important! Hold the wheel while screwing in the fastening bolts. Mercedes W124
Step 37
Screw in the wheel bolts. Use wheel impact socket #17. Use a ratchet wrench.
Step 38
Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #17. Use a torque wrench. Tighten it to 110 Nm torque.
Step 39
Remove the jacks and chocks.
AUTODOC recommends:
Mercedes W124 – Press the brake pedal several times with the engine shut down until you feel the resistance built up.Check the brake fluid level in the expansion tank and top up if necessary.
Step 40
Tighten the brake fluid reservoir cap.
Step 41
Close the bonnet.
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