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.
All work should be done with the engine stopped.
Replacement: brake pads – Mercedes W124. Use the following procedure:
Step 1
Open the bonnet.
Step 2
Unscrew the brake fluid reservoir cap.
Step 3
Secure 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 pads – 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.
AUTODOC recommends:
Measure the brake disc thickness. Upon reaching the wear limit the part must be replaced.
Step 13
Clean the mounting seats of the brake pads on the brake caliper bracket. Use a wire brush. Use a brake cleaner.
AUTODOC recommends:
Replacement: brake pads – Mercedes W124. After applying the spray, wait a few minutes.
Step 14
Install new brake shoes.
Step 15
Install the retaining spring of the brake pads.
Step 16
Install the brake pad guide pins. Use a pin punch. Use a hammer.
Step 17
Clean the brake disk surface. Use a brake cleaner.
Step 18
Treat the surface where the brake disc contacts the wheel rim. Use ceramic grease.
Step 19
Install the wheel.
AUTODOC recommends:
Important! Hold the wheel while screwing in the fastening bolts. Mercedes W124
Step 20
Screw in the wheel bolts. Use wheel impact socket #17. Use a ratchet wrench.
Step 21
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 22
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 23
Tighten the brake fluid reservoir cap.
Step 24
Close the bonnet.
Replacement: brake pads – Mercedes W124. Tip from AUTODOC experts:
Slow down smoothly for first 150-200 km after the brake pads replacement. Avoid unneccessary and sharp braking to a stop.
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