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How to change rear brake discs on Mercedes W124 – replacement guide
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Recommended replacement interval for the part category Brake disc : 50000 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 300 D (124.131), MERCEDES-BENZ E-Class Saloon (W124) E 200 (124.019), MERCEDES-BENZ E-Class Saloon (W124) E 220 (124.022), MERCEDES-BENZ E-Class Saloon (W124) E 280 (124.029), MERCEDES-BENZ E-Class Saloon (W124) E 280 (124.028), MERCEDES-BENZ E-Class Saloon (W124) E 200 D (124.120), MERCEDES-BENZ E-Class Saloon (W124) E 250 Turbo-D (124.128), MERCEDES-BENZ E-Class Saloon (W124) E 300 Turbo-D 4-matic (124.333), MERCEDES-BENZ E-Class Saloon (W124) E 300 Turbo-D (124.133), MERCEDES-BENZ E-Class Saloon (W124) E 300 4-matic (124.230) … 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 300 D (124.131), MERCEDES-BENZ E-Class Saloon (W124) E 200 (124.019), MERCEDES-BENZ E-Class Saloon (W124) E 220 (124.022), MERCEDES-BENZ E-Class Saloon (W124) E 280 (124.029), MERCEDES-BENZ E-Class Saloon (W124) E 280 (124.028), MERCEDES-BENZ E-Class Saloon (W124) E 200 D (124.120), MERCEDES-BENZ E-Class Saloon (W124) E 250 Turbo-D (124.128), MERCEDES-BENZ E-Class Saloon (W124) E 300 Turbo-D 4-matic (124.333), MERCEDES-BENZ E-Class Saloon (W124) E 300 Turbo-D (124.133), MERCEDES-BENZ E-Class Saloon (W124) E 300 4-matic (124.230) … View more
The steps may slightly vary depending on the car design.
How to change rear brake kit on MERCEDES W124 [TUTORIAL AUTODOC]

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

Wire brush
WD-40 spray
Brake cleaner
All-purpose cleaning spray
Ceramic grease
Torque wrench
Combination spanner #17
Drive socket # 13
Drive socket # 17
HEX bit No.H5
Wheel impact socket #17
Ratchet wrench
Flat Screwdriver
Pin punch
Hammer
Tap wrench
Long nose pliers
Crow bar
Wheel chock
Replacement: brake discs – Mercedes W124. AUTODOC experts recommend:
- Replace the brake disks on the car Mercedes W124 in complete set for each axis. Regardless of the state of components. This will ensure even braking.
- The replacement procedure is identical for both brake disks on the same axle.
- When changing the brake discs, always replace the brake pads.
- All work should be done with the engine stopped.
Replacement: brake discs – Mercedes W124. Use the following procedure:
- 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.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.Replacement: brake discs – Mercedes W124. Tip:To avoid injury, hold up the wheel when unscrewing the bolts. - Step 7
Remove the wheel. - Step 8
Clean the brake pad guide pins. Use a wire brush. Use all-purpose cleaning spray. - Step 9
Remove the brake pad guide pins. Use a pin punch. Use a hammer. - Step 10
Remove the retaining spring of the brake pads. - Step 11
Spread the brake pads. Use a crowbar (2 pieces). - Step 12
Remove the brake pads. - Step 13
Clean the brake caliper fasteners. Use a wire brush. Use WD-40 spray. - Step 14
Unscrew the brake caliper fasteners. Use a combination spanner #17. - Step 15
Remove the fastening bolts. - Step 16
Remove the brake caliper.Replacement: brake discs – Mercedes W124. AUTODOC recommends: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.
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