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 320 (124.032), 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 (124.133) … View more

The steps may slightly vary depending on the car design.

How to change front wheel bearing on MERCEDES W124 [TUTORIAL AUTODOC]

All the parts you need to replace – Wheel Bearing for E-Class Saloon (W124) and other MERCEDES-BENZ models

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Replacement: wheel bearing – Mercedes W124. Tools you'll need:

                      Wire brush
                    
                      Nylon cleaning brush
                    
                      WD-40 spray
                    
                      All-purpose cleaning spray
                    
                      Bearing grease
                    
                      Ceramic grease
                    
                      Torque wrench
                    
                      Combination spanner #19
                    
                      Combination spanner #22
                    
                      Drive socket # 19
                    
                      HEX bit no.H5
                    
                      Wheel impact socket #17
                    
                      Ratchet wrench
                    
                      Tap wrench
                    
                      Bush and bearing driver set
                    
                      Universal puller
                    
                      Hammer
                    
                      Crow bar
                    
                      Wheel chock

Buy tools

Replacement: wheel bearing – Mercedes W124. Professionals recommend:

Do not re-use the bearing assembly of your Mercedes W124 car.
The wheel hub bearing replacement procedure is identical for both wheels on the same axle.
All work should be done with the engine stopped.

Replacement: wheel bearing – Mercedes W124. Recommended sequence of steps:

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: wheel bearing – 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:
To avoid injury, hold up the wheel when unscrewing the bolts.
Step 7

Remove the wheel.
Step 8

Spread the brake pads. Use a crowbar.
Step 9

Clean the brake caliper bracket fasteners. Use a wire brush. Use WD-40 spray.
Step 10

Unscrew the brake caliper bracket fasteners. Use a combination spanner #19.
Step 11

Remove the fastening bolts.
Step 12

Remove the brake caliper together with its bracket.

Replacement: wheel bearing – Mercedes W124. 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 13

Clean the brake disc fastener. Use a wire brush. Use WD-40 spray.
Step 14

Unscrew the brake disc fasteners. Use HEX No.H5. Use a ratchet wrench.
Step 15

Remove the fastening bolt.
Step 16

Remove the brake disc.
Step 17

Remove the hub bearing cap. Use a crowbar. Use a hammer.
Step 18

Remove the contact spring.
Step 19

Loosen the wheel hub fastening nut screw. Use HEX No.H5. Use a ratchet wrench.
Step 20

Unscrew the hub nut.
Step 21

Remove the wheel hub together with the bearing.
Step 22

Clean the wheel stub axle. Use all-purpose cleaning spray.
Step 23

Clean the ABS sensor. Use a nylon cleaning brush. Use all-purpose cleaning spray.
Step 24

Remove elements of the bearings from the wheel hub. Use a bush and bearing driver set.
Step 25

Dismantle the outer bearing races. Use a bush and bearing driver set. Use a universal puller.
Step 26

Clean the mounting seats of the wheel bearings. Use all-purpose cleaning spray.
Step 27

Install the outer rings of the new wheel bearings. Use a bush and bearing driver set.
Step 28

Treat the wheel bearings. Use bearing grease.
Step 29

Reinstall the elements of the bearings in the wheel hub.
Step 30

Install the wheel bearing oil seal. Use a bush and bearing driver set.
Step 31

Reinstall the hub together with the new bearings.
Step 32

Screw on the hub nut.
Step 33

Treat the contacting surface. Use ceramic grease.
Step 34

Install the brake disc.
Step 35

Install the fastening bolt.
Step 36

Tighten the brake disc fasteners. Use HEX No.H5. Use a torque wrench. Tighten it to 10 Nm torque.
Step 37

Spin the wheel to distribute the new grease evenly on the wheel bearings.
Step 38

Adjust the axial clearance by tightening the adjusting nut. Use a combination spanner #22.

Replacement: wheel bearing – Mercedes W124. Tip:
See your car’s repair manual for exact adjustment instructions.
Step 39

Tighten the screw of the wheel hub fastening nut. Use HEX No.H5. Use a torque wrench. Tighten it to 12 Nm torque.
Step 40

Install the contact spring.
Step 41

Install the hub bearing cap. Use a bush and bearing driver set.
Step 42

Install the brake caliper together with its bracket.
Step 43

Install the fastening bolts.
Step 44

Tighten the brake caliper bracket fasteners. Use a drive socket #19. Use a torque wrench. Tighten it to 115 Nm torque.
Step 45

Clean the wheel rim mounting seat. Use a wire brush. Use all-purpose cleaning spray.
Step 46

Treat the surface where the brake disc contacts the wheel rim. Use ceramic grease.
Step 47

Install the wheel.

AUTODOC recommends:
Important! Hold the wheel while screwing in the fastening bolts. Mercedes W124
Step 48

Screw in the wheel bolts. Use wheel impact socket #17. Use a ratchet wrench.
Step 49

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 50

Remove the jacks and chocks.

Replacement: wheel bearing – Mercedes W124. 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 51

Tighten the brake fluid reservoir cap.
Step 52

Close the bonnet.

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