Recommended replacement interval for the part category Brake disc : 50000 km

Important!

This replacement procedure can be used for:
MERCEDES-BENZ W124 Estate (S124) 200 T (124.080), MERCEDES-BENZ W124 Estate (S124) 200 T (124.080), MERCEDES-BENZ W124 Estate (S124) 200 TE (124.081), MERCEDES-BENZ W124 Estate (S124) 200 TE, MERCEDES-BENZ W124 Estate (S124) 230 TE (124.083), MERCEDES-BENZ W124 Estate (S124) 200 T D (124.180), MERCEDES-BENZ W124 Estate (S124) 200 T D (124.180), MERCEDES-BENZ W124 Estate (S124) 250 T D (124.185), MERCEDES-BENZ W124 Estate (S124) 250 T D (124.185), MERCEDES-BENZ W124 Estate (S124) 300 T D (124.190), MERCEDES-BENZ W124 Estate (S124) 300 T D (124.190), MERCEDES-BENZ W124 Estate (S124) 300 T D (124.190), MERCEDES-BENZ W124 Estate (S124) 200 E, MERCEDES-BENZ W124 Estate (S124) 300 TD T … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

All the parts you need to replace – Brake Discs for W124 Estate (S124) and other MERCEDES-BENZ models

Brake disc

        Brake disc for W124 Estate (S124) Petrol (105 hp)
      
        Brake disc for W124 Estate (S124) Petrol (109 hp)
      
        Brake disc for W124 Estate (S124) Petrol (118 hp)
      
        Brake disc for W124 Estate (S124) Petrol (122 hp)
      
        Brake disc for W124 Estate (S124) Petrol (136 hp)
      
        Brake disc for W124 Estate (S124) Diesel (72 hp)
      
        Brake disc for W124 Estate (S124) Diesel (75 hp)
      
        Brake disc for W124 Estate (S124) Diesel (90 hp)
      
        Brake disc for W124 Estate (S124) Diesel (94 hp)

Replacement: brake discs – MERCEDES-BENZ KOMBI Estate (S124). Tools you need:

                        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

Buy tools

AUTODOC recommends:

Replace the brake disks on the car MERCEDES-BENZ KOMBI Estate (S124) 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.
Warning! Shut down the engine before starting any work – MERCEDES-BENZ KOMBI Estate (S124).

Carry out replacement in the following order:

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.

Replacement: brake discs – MERCEDES-BENZ KOMBI Estate (S124). Tip:
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-BENZ KOMBI Estate (S124)
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 11

Remove the fastening bolts.

Step 12

Spread the brake pads. Use a crowbar.
Step 13

Remove the brake caliper.

Replacement: brake discs – MERCEDES-BENZ KOMBI Estate (S124). AUTODOC experts recommend:
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.
Step 15

Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
Step 16

Unscrew the brake caliper bracket fasteners. Use a drive socket #19. Use a ratchet wrench.
Step 17

Remove the fastening bolts.
Step 18

Remove the brake caliper bracket.
Step 19

Clean the brake disc fastener. Use a wire brush. Use WD-40 spray.
Step 20

Unscrew the brake disc fasteners. Use HEX No.H5. Use a ratchet wrench.
Step 21

Remove the fastening bolt.
Step 22

Remove the brake disc.
Step 23

Clean the wheel hub. Use a wire brush.
Step 24

Treat the contacting surface. Use ceramic grease.
Step 25

Install a new brake disc.
Step 26

Install the fastening bolt.
Step 27

Tighten the brake disc fasteners. Use HEX No.H5. Use a torque wrench. Tighten it to 10 Nm torque.
Step 28

Clean 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 29

Install the brake caliper bracket.
Step 30

Install the fastening bolts.
Step 31

Tighten the brake caliper bracket fasteners. Use a drive socket #19. Use a torque wrench. Tighten it to 115 Nm torque.
Step 32

Treat the brake caliper piston. Use a nylon cleaning brush. Use a brake cleaner.
Step 33

Press in the brake caliper piston. Use brake caliper wind back tool.
Step 34

Treat the brake pads in the area where their surface comes into contact with the brake caliper bracket. Use anti-squeal paste.

Replacement: brake discs – MERCEDES-BENZ KOMBI Estate (S124). Professionals recommend:
Make sure the disc surface is clean before installing the pads.
Step 35

Install the brake pads.
Step 36

Install the brake caliper and fasten it.
Step 37

Install the fastening bolts.
Step 38

Tighten the brake caliper fasteners. Use a combination spanner #15. Use a drive socket #13. Use a torque wrench. Tighten it to 35 Nm torque.
Step 39

Treat the brake pad wear sensor plug. Use dielectric grease.
Step 40

Attach the connector of the brake pad wear sensor.
Step 41

Treat the surface where the brake disc contacts the wheel rim. Use ceramic grease.
Step 42

Clean the brake disk surface. Use a brake cleaner.

Step 43

Install the wheel.

AUTODOC recommends:
Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. MERCEDES-BENZ KOMBI Estate (S124)
Step 44

Screw in the wheel bolts. Use wheel impact socket #17. Use a ratchet wrench.
Step 45

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 46

Remove the jacks and chocks.

Replacement: brake discs – MERCEDES-BENZ KOMBI Estate (S124). Tip from AUTODOC experts:
Without starting the engine, press the brake pedal several times until you feel significant resistance.Check the brake fluid level in the expansion tank and top up if necessary.
Step 47

Tighten the brake fluid reservoir cap.

Step 48

Close the bonnet.

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