How to change front strut mount on BMW E46 convertible – replacement guide
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Important!
This replacement procedure can be used for:
BMW 3 Convertible (E46) 323 Ci,
BMW 3 Convertible (E46) 330 Ci,
BMW 3 Convertible (E46) 320 Ci,
BMW 3 Convertible (E46) 325 Ci
…
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The steps may slightly vary depending on the car design.
How to change front strut mount / top munt BMW 3 (E46) Coupe [TUTORIAL AUTODOC]
All the parts you need to replace – Strut Mount for 3 Convertible (E46) and other BMW models
Replacement: strut mount – BMW E46 convertible. Professionals recommend:
The replacement procedure is identical for the mounts of the left and right shock struts of the front suspension.
All mounts of the front shock struts should be replaced simultaneously.
Be sure to replace all self-locking nuts and bolts during installation.
Please note: all work on the car – BMW E46 convertible – should be done with the engine switched off.
Carry out replacement in the following order:
Step 1
Open the bonnet.
Step 2
Secure the wheels with chocks.
Step 3
Loosen the wheel mounting bolts. Use wheel impact socket #17.
Step 4
Raise the front of the car and secure on supports.
Step 5
Unscrew the wheel bolts.
Replacement: strut mount – BMW E46 convertible. Tip from AUTODOC:
To avoid injury, hold up the wheel when unscrewing the bolts.
Step 6
Remove the wheel.
Step 7
Clean the fasteners connecting the stabiliser link to the shock strut, and those connecting the shock strut to the steering knuckle. Use a wire brush. Use WD-40 spray.
Step 8
Unscrew the nut and remove the stabilizer rod from the shock strut. Use HEX No.H7. Use a combination spanner #17. Use a ratchet wrench.
Step 9
Unscrew the ball joint fastening to the steering knuckle. Use a combination spanner #19.
Step 10
Unscrew the lower fastener connecting the shock strut to the steering knuckle. Use a drive socket #21. Use a tap wrench.
Step 11
Disconnect the wiring and the brake hose from the bracket on the shock strut.
Step 12
Release the lower fastener connecting the shock strut to the steering knuckle. Use a special drive socket to remove the shock absorber.
Step 13
Prop up the steering knuckle. Use a hydraulic transmission jack.
Step 14
Disconnect the lower arm from the steering knuckle.
Step 15
Lower the hydraulic transmission jack by 10-15 cm.
AUTODOC recommends:
Replacement: strut mount – BMW E46 convertible. Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms.
Step 16
Disconnect the steering knuckle from the shock absorber strut.
Step 17
Unscrew the shock absorber mount fastening. Use a drive socket #13. Use a ratchet wrench.
Step 18
Unscrew the upper fasteners of the shock strut.
Replacement: strut mount – BMW E46 convertible. AUTODOC recommends:
To avoid injuries, hold the shock strut when undoing the fastening bolts.
Step 19
Remove the suspension strut.
Step 20
Set the shock absorber strut on the spring compressor tool.
Replacement: strut mount – BMW E46 convertible. AUTODOC experts recommend:
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 21
Compress the spring.
Step 22
Remove the shock strut mount cap. Use a crowbar.
Step 23
Remove the strut piston rod nut. Use a drive socket #22. Use HEX No.H7.
Step 24
Remove the top strut mount.
Replacement: strut mount – BMW E46 convertible. Tip from AUTODOC experts:
Examine the shock absorber dust cap and the bump stop. Replace them if necessary.
Step 25
Install a new top shock strut mount. Use a crowbar.
Step 26
Treat the fasteners of the shock strut mount. Use WD-40 spray.
Step 27
Tighten the shock strut piston rod nut. Use a drive socket #22. Use HEX No.H7. Use a torque wrench. Tighten it to 64 Nm torque.
Replacement: strut mount – BMW E46 convertible. Tip:
Check to make sure the spring is positioned correctly. Avoid its misalignment.
Step 28
Decompress the spring.
Step 29
Install the shock strut mount cap.
Step 30
Remove the assembled shock strut.
Step 31
Install the shock strut into the wheel arch.
Step 32
Secure the upper fasteners of the shock strut. Use a drive socket #13. Do not tighten it.
Step 33
Treat the shock strut mounting seat on the steering knuckle. Use a wire brush. Use WD-40 spray.
Step 34
Fix the shock absorber strut on the steering knuckle.
Step 35
Install and tighten a new bolt of the steering knuckle.
Step 36
Connect the lower arm to the steering knuckle.
Step 37
Remove the support from under the steering knuckle.
AUTODOC recommends:
BMW E46 convertible – Do not lower the transmission jack sharply to avoid damaging components and mechanisms of the car.
Step 38
Support the arm. Use a hydraulic transmission jack.
Step 39
Screw the fastener connecting the ball joint to the steering knuckle. Use a combination spanner #19.
Step 40
Tighten the lower fasteners connecting the shock strut to the steering knuckle. Use a drive socket #21. Use a torque wrench. Tighten it to 80 Nm torque.
Step 41
Fasten the brake hose on the strut. Connect the fastener of the ABS sensor cable to the shock absorber strut.
Step 42
Remove the support from under the arm.
Replacement: strut mount – BMW E46 convertible. Tip from AUTODOC experts:
Lower the hydraulic transmission jack smoothly, without jerks, to avoid damaging assemblies and mechanisms.
Step 43
Secure the stabilizer link on the suspension strut. Use HEX No.H7. Use a combination spanner #17. Use a torque wrench. Tighten it to 55 Nm torque.
Step 44
Tighten the ball joint fastener. Use a combination spanner #19. Use a torque wrench. Tighten it to 65 Nm torque.
Step 45
Treat all joints of the arm. Treat the shock strut fasteners. Use copper grease.
Step 46
Clean the wheel rim mounting seat. Use a wire brush. Treat the contacting surface. Use copper grease.
Step 47
Install the wheel.
AUTODOC recommends:
Important! Hold the wheel while screwing in the fastening bolts. BMW E46 convertible
Step 48
Screw in the wheel bolts. Use wheel impact socket #17.
Step 49
Tighten the upper fasteners of the shock strut. Use a drive socket #13. Use a torque wrench. Tighten it to 34 Nm torque.
Step 50
Lower the car and working in a cross order, tighten the wheel bolts. Use a torque wrench. Tighten it to 120 Nm torque.
Step 51
Remove the jacks and chocks.
Step 52
Close the hood.
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