How to change front coil springs on Mercedes W245 – replacement guide
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Important!
This replacement procedure can be used for:
MERCEDES-BENZ B-Class (W245) B 180 CDI (245.207),
MERCEDES-BENZ B-Class (W245) B 200 CDI (245.208),
MERCEDES-BENZ B-Class (W245) B 170 (245.232),
MERCEDES-BENZ B-Class (W245) B 200 TURBO (245.234),
MERCEDES-BENZ B-Class (W245) B 150 (245.231)
…
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The steps may slightly vary depending on the car design.
How to change front springs / front coil springs on MERCEDES-BENZ B200 (W245) [TUTORIAL AUTODOC]
All the parts you need to replace – Springs for B-Class (W245) and other MERCEDES-BENZ models
To avoid injury, hold up the wheel when unscrewing the bolts.
Step 8
Remove the wheel.
Step 9
Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
Step 10
Unscrew the fastener connecting the stabilizer link to the shock strut. Use a combination spanner #16.
Step 11
Remove the stabilizer rod.
Step 12
Disconnect the ABS sensor wiring. Disconnect the brake pad wear sensor plug.
Replacement: coil springs – Mercedes W245. Tip:
Some cars are not equipped with the brake pad wear sensor.
Step 13
Disconnect the brake hose mounting bracket. Use a crowbar.
Step 14
Clean the fasteners connecting the shock strut to the steering knuckle. Use a wire brush. Use WD-40 spray.
Step 15
Unscrew the lower fastener connecting the shock strut to the steering knuckle. Use a combination spanner #21. Use a drive socket #21. Use a tap wrench.
Step 16
Remove the fastening bolt.
Step 17
Prop up the steering knuckle. Use a hydraulic transmission jack.
Step 18
Remove the fastening bolt.
Step 19
Disconnect the steering knuckle from the shock absorber strut.
Step 20
Unscrew the top fastening of the shock strut mount.
AUTODOC recommends:
Important! Hold the suspension strut while unscrewing the fastening bolts. Mercedes W245
Step 21
Remove the suspension strut.
Step 22
Set the shock absorber strut on the spring compressor tool.
Note that when using a spring compressor, spring coils need to be securely gripped, compressing the spring on the opposite sides.Ensure the correct position of the spring in the retainer.Make sure that the spring coils tightly entered the lock handles.
Step 23
Treat the shock strut rod. Use a wire brush. Use WD-40 spray.
Step 24
Compress the spring.
Step 25
Remove the strut piston rod nut. Use HEX No.H6. Use a drive socket #21. Use a ratchet wrench.
Step 26
Remove the top strut mount.
Step 27
Release the coil spring.
Step 28
Remove the spring.
Step 29
Remove the shock absorber dust cap and the bump stop.
AUTODOC recommends:
Replacement: coil springs – Mercedes W245. Carefully inspect the mount, the boot, and the bump stop of the shock absorber. Replace if necessary.
Step 30
Install the dust sleeve and the bump stop on the new shock absorber.
Step 31
Install the spring on the shock absorber.
Step 32
Compress the spring.
Step 33
Install the upper strut mount and the strut mount bearing.
Step 34
Tighten the shock strut piston rod nut. Use a drive socket #22. Use HEX No.H6. Use a torque wrench. Tighten it to 60 Nm torque.
Replacement: coil springs – Mercedes W245. Tip from AUTODOC:
Check to make sure the spring is positioned correctly. Avoid its misalignment.
Step 35
Treat the shock strut rod. Use copper grease.
Step 36
Decompress the spring.
Step 37
Remove the assembled shock strut.
Step 38
Clean the mounting seats of the shock strut. Use a wire brush. Use WD-40 spray.
Step 39
Install the shock strut into the wheel arch.
Step 40
Screw the top fastening of the shock strut mount. Do not tighten it.
AUTODOC recommends:
Mercedes W245 – To avoid injury, hold the suspension strut while screwing in the fastening bolts.
Step 41
Fix the shock absorber strut on the steering knuckle.
Step 42
Install the fastening bolts.
Step 43
Screw in the fastener that connects the shock strut to the steering knuckle. Use a combination spanner #21. Use a drive socket #21. Use a ratchet wrench.
Step 44
Remove the support from under the steering knuckle.
AUTODOC recommends:
Replacement: coil springs – Mercedes W245. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 45
Tighten the lower fasteners connecting the shock strut to the steering knuckle. Use a combination spanner #21. Use a drive socket #21. Use a torque wrench. Tighten it to 120 Nm torque.+90°
AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 46
Secure the brake hose fastening bracket.
Step 47
Connect the ABS sensor wiring.
Step 48
Connect the brake pad wear sensor plug.
Step 49
Clean the stabiliser link fasteners. Use a wire brush. Use WD-40 spray.
Step 50
Ιnstall the transverse stabilizer link.
Step 51
Tighten the fastener connecting the stabilizer link to the shock strut. Use a drive socket #16. Use a torque wrench. Tighten it to 60 Nm torque.
Step 52
Treat the surface where the brake disc contacts the wheel rim. Use copper grease.
Step 53
Clean the brake disk surface. Use a brake cleaner.
Replacement: coil springs – Mercedes W245. Tip:
After applying the spray, wait a few minutes.
Step 54
Treat the shock strut fasteners. Use copper grease.
Step 55
Install the wheel.
AUTODOC recommends:
Warning! To avoid injury, hold the wheel while screwing in the fastening bolts on the car. Mercedes W245
Step 56
Screw in the wheel bolts. Use wheel impact socket #H12.
Step 57
Lower the car and working in a cross order, tighten the wheel bolts. Use wheel impact socket #H12. Use a torque wrench. Tighten it to 130 Nm torque.
Step 58
Tighten the upper fastener of the shock absorber strut mount. Use a drive socket #E12. Use a torque wrench. Tighten it to 20 Nm torque.+45°
AUTODOC recommends:
Important! Be sure to use new fasteners.
Step 59
Treat the fasteners of the shock strut mount. Use copper grease.
Step 60
Remove the fender protection cover.
Step 61
Close the hood.
Step 62
Remove the jacks and chocks.
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