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How to change front brake pads on Mercedes W124 – replacement guide
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Recommended replacement interval for the part category Brake pad set : 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ E-Class Saloon (W124) E 250 D (124.126, 124.129), MERCEDES-BENZ E-Class Saloon (W124) E 200 D (124.120) … View more
The steps may slightly vary depending on the car design.
MERCEDES-BENZ E-Class Saloon (W124) E 250 D (124.126, 124.129), MERCEDES-BENZ E-Class Saloon (W124) E 200 D (124.120) … View more
The steps may slightly vary depending on the car design.
How to change front brake disc and pads set on MERCEDES W124 [TUTORIAL AUTODOC]

All the parts you need to replace – Brake Pads for E-Class Saloon (W124) and other MERCEDES-BENZ models
Alternative products

Wire brush
Nylon cleaning brush
WD-40 spray
Brake cleaner
Dielectric grease
Anti-squeal paste
Ceramic grease
Torque wrench
Combination spanner #15
Drive socket # 13
Drive socket # 19
HEX bit No.H5
Wheel impact socket #17
Ratchet wrench
Tap wrench
Crow bar
Brake caliper wind back tool
Wheel chock
AUTODOC recommends:
- Perform the replacement of brake pads in complete set for each axis. This provides effective braking.
- The replacement procedure is identical for all brake pads on the same axle.
- Warning! Shut down the engine before starting any work – Mercedes W124.
Carry out replacement in the following order:
- Step 1
Open the bonnet. - Step 2
Unscrew the brake fluid reservoir cap. - Step 3Secure the wheels with chocks.Step 4
Loosen the wheel bolts. Use wheel impact socket #17. Use a tap wrench. - Step 5
Raise the car.Replacement: brake pads – Mercedes W124. AUTODOC recommends:If you are using a jack, make sure it rests on a flat surface without any unevenness.Be sure to additionally secure the car with jack stands. - Step 6
Unscrew the wheel bolts.AUTODOC recommends:Important! Hold the wheel while unscrewing the fastening bolts. Mercedes W124 - Step 7
Remove the wheel. - Step 8
Detach the connector of the brake pad wear sensor. - Step 9
Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray. - Step 10
Unscrew the brake caliper fasteners. Use a combination spanner #15. Use a drive socket #13. Use a ratchet wrench. - Step 11Remove the fastening bolts.Step 12
Spread the brake pads. Use a crowbar. - Step 13
Remove the brake caliper.Replacement: brake pads – Mercedes W124. Tip from AUTODOC experts: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 14
Remove the brake pads.Replacement: brake pads – Mercedes W124. Tip from AUTODOC:Measure the brake disc thickness. Upon reaching the wear limit the part must be replaced. - Step 15Clean the brake caliper bracket of dirt and dust. Use a wire brush. Use a brake cleaner.AUTODOC recommends:Check the brake caliper bracket, brake caliper guide pins and boots. Clean them. Replace, if necessary.Step 16
Treat the brake caliper piston. Use a nylon cleaning brush. Use a brake cleaner. - Step 17
Press in the brake caliper piston. Use brake caliper wind back tool. - Step 18
Treat the brake pads in the area where their surface comes into contact with the brake caliper bracket. Use anti-squeal paste.AUTODOC recommends:Make sure the disc surface is clean before installing the pads. - Step 19
Install new brake pads.
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