How to change front coil springs on Mercedes W124 – replacement guide
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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 280 (124.028),
MERCEDES-BENZ E-Class Saloon (W124) E 320 (124.032),
MERCEDES-BENZ E-Class Saloon (W124) E 250 Turbo-D (124.128),
MERCEDES-BENZ E-Class Saloon (W124) E 300 Turbo-D (124.133)
…
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The steps may slightly vary depending on the car design.
How to change front shock absorber and coil springs on MERCEDES W124 [TUTORIAL AUTODOC]
All the parts you need to replace – Springs for E-Class Saloon (W124) and other MERCEDES-BENZ models
Both coil springs of the front suspension should be replaced simultaneously.
The replacement procedure is identical for the left and right coil springs of the front suspension.
All work should be done with the engine stopped.
Replacement: coil springs – Mercedes W124. Take the following steps:
Step 1
Secure the wheels with chocks.
Step 2
Loosen the wheel bolts. Use wheel impact socket #17. Use a tap wrench.
Step 3
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 4
Unscrew the wheel bolts.
AUTODOC recommends:
Warning! To avoid injury, hold the wheel while unscrewing the fastening bolts. Mercedes W124
Step 5
Remove the wheel.
Step 6
Support the steering knuckle. Use a hydraulic transmission jack.
Step 7
Install the coil spring compressor on the coil spring.
AUTODOC recommends:
Use adapters and jaws of the appropriate size.The sping coils should be securely fixed with the coil spring compressor.Use high quality coil spring compressors.
Step 8
Compress the spring.
Replacement: coil springs – Mercedes W124. Tip from AUTODOC experts:
Be careful. The compressed spring is powerful and can cause injury if it comes loose.
Step 9
Clean the shock absorber fasteners. Use a wire brush. Use WD-40 spray.
Step 10
Disconnect the wiring from the strut.
Step 11
Unscrew the lower fasteners on the shock absorber. Use a drive socket #19. Use a ratchet wrench.
Step 12
Remove the fastening bolts.
Step 13
Detach the strut from the steering knuckle. Use a crowbar.
Step 14
Clean the fasteners of the stabilizer bush brackets. Use a wire brush. Use WD-40 spray.
Step 15
Unscrew the fasteners of the stabilizer bush brackets. Use a combination spanner #13. Use a drive socket #13. Use a ratchet wrench.
Step 16
Remove the fastening bolts.
Step 17
Remove the stabilizer bush brackets.
Step 18
Remove the coil spring together with the coil spring compressor.
While the spring is compressed, do not do any operations on it.
Step 19
Decompress the spring.
Step 20
Put the coil spring compressor on the new spring.
Replacement: coil springs – Mercedes W124. Tip from AUTODOC:
The position of the compressor on the new coil spring should be the same as on the old one.
Step 21
Compress the spring.
AUTODOC recommends:
Be careful. The compressed spring is powerful and can cause injury if it comes loose.
Step 22
Clean the coil spring mounting seats. Use a wire brush. Use all-purpose cleaning spray.
Step 23
Install the spring together with the compressor.
AUTODOC recommends:
Make sure that the coil spring is correctly positioned in its mounting seats.
Step 24
Install the fastening bolts.
Step 25
Tighten the lower fasteners on the shock absorbers. Use a drive socket #19. Use a torque wrench. Tighten it to 110 Nm torque.
Step 26
Remove the support from under the steering knuckle.
AUTODOC recommends:
Lower the hydraulic transmission jack smoothly, without jerks, to avoid damaging assemblies and mechanisms.
Step 27
Secure the wiring to the strut.
Step 28
Install the stabilizer bush brackets. Use water pump pliers.
Step 29
Install the fastening bolts.
Step 30
Tighten the fasteners on the anti-roll bar bush brackets. Use a combination spanner #13. Use a drive socket #13. Use a torque wrench. Tighten it to 20 Nm torque.
Step 31
Decompress the spring.
Step 32
Remove the coil spring compressor.
Step 33
Clean the wheel rim mounting seat. Use a wire brush. Use all-purpose cleaning spray.
Step 34
Treat the surface where the brake disc contacts the wheel rim. Use ceramic grease.
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