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

Important!

This replacement procedure can be used for:
MERCEDES-BENZ W124 Estate (S124) 300 TE (124.090) … 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 (188 hp)

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

                        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

Buy tools

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

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.
All work should be done with the engine stopped.

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

Was this manual helpful?

Please rate this manual on a scale from 1 to 5. If you have any questions, feel free to ask us.

Searching for the right tyres?

Find out which tyre and wheel sizes are compatible with the MERCEDES-BENZ W124 Estate (S124) model.

Browse tyres

How to change rear brake caliper on MERCEDES-BENZ W124 Estate (S124) – replacement guide

Free download PDF
2.1 MB
How to change rear brake caliper repair kit on MERCEDES-BENZ W124 Estate (S124) – replacement guide

Free download PDF
2.84 MB
How to change front brake discs on MERCEDES-BENZ W124 Estate (S124) – replacement guide

Free download PDF
2.22 MB
How to change front brake pads on MERCEDES-BENZ W124 Estate (S124) – replacement guide

Free download PDF
1.51 MB
How to change rear brake pads on MERCEDES-BENZ W124 Estate (S124) – replacement guide

Free download PDF
1.24 MB
How to change hand brake cable on MERCEDES-BENZ W124 Estate (S124) – replacement guide

Free download PDF
2.98 MB

How to change front brake discs on MERCEDES-BENZ W124 Estate (S124) – replacement guide

Free download PDF
2.22 MB
How to change brake discs on a car – replacement tutorial

Universal

Free download PDF
2.92 MB
How to change rear brake discs on Mercedes W204 – replacement guide

Free download PDF
2.54 MB
How to change front brake discs on Mercedes W204 – replacement guide

Free download PDF
2.17 MB
How to change rear brake discs on Mercedes W211 – replacement guide

Free download PDF
2.44 MB
How to change front brake discs on Mercedes W169 – replacement guide

Free download PDF
1.92 MB

Your profile is your personal assistant.

It can track car expenses, keep a car log and replacement schedule, and save favourite materials, notes and documents

Install the AUTODOC CLUB app!

Your personal car expenses manager, maintenance tips, reminders about upcoming appointments and service intervals, DIY repair instructions – all this on your phone.

Scan

To download the app:

- scan the QR code
- download from App Store
- download from Google Play

Top 5 brake repair mistakes | AUTODOC tips

184K views

Published on: 27/10/2022
How to find and change a fuse | AUTODOC

2K views

Published on: 15/08/2020
Coolant comparison test | AUTODOC

11K views

Published on: 18/02/2021
How to swap the engine on a BMW E30 Turbo | SUPERCAR AUTODOC

2K views

Published on: 15/02/2021