37 12 092 Replacing rear left or right spring strut shock absorber

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WARNING:

Completely read the manufacturer's operating instructions before using special tools 31 3 340 !

Strictly adhere to all safety information and instructions in the operating instructions!

Failure to observe these safety precautions and instructions increases the risk of serious physical injury, damage to your health and damage to property and equipment!

IMPORTANT:

Only use special tool approved by BMW
Prior to each use, check the special tools for defects, modifications and operational reliability.
Damaged/modified special tools must not be used!
No changes or modifications may be made to the special tools!
These special tools are intended solely for the purpose of tightening and relieving cylindrical and tapered suspension springs.
Keep special tools dry, clean and (down to the spindle) free from grease.
Impact screwdrivers are prohibited!
Do not compress coil spring to full extent.

Necessary preliminary work:

Remove REAR SPRING STRUT SHOCK ABSORBER .

Removing:

Clamp special tool 31 3 341 (spring tensioner) in vice.

Fit special tools 31 3 351 from above on special tool 31 3 341 until retaining bolt (1) can be felt and heard to snap into place.

Fig 1: Identifying Jacking Point

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Clean coil spring to remove all coarse dirt and mount on special tools 31 3 351 (holder).

WARNING: Coils of coil spring must be located completely in recesses of special tools 31 3 351 (holder)!

Compress coil spring until stress on piston rod is relieved.

Fig 2: Compressing Coil Spring

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Release nut with special tool 33 0 040 (socket wrench).

Remove plate and support bearing with spring pad.

Remove shock absorber with support cup, auxiliary damper, protective tube and spring pad sideways from tensioned coil spring.

Fig 3: Identifying Jacking Point

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If necessary, remove support cup, auxiliary damper (1) with protective tube and spring pad (2) from shock absorber.

Fig 4: Identifying Auxiliary Damper And Spring Pad

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Relieve tension on coil spring and remove from special tools 31 3 351 (holder).

Fig 5: Identifying Jacking Point

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Installation note:

WARNING:

Do not compress coil spring to full extent.

Coils of coil spring must be located completely in recesses of special tools 31 3 351 (holder)!

Tension coil spring.

Fig 6: Identifying Jacking Point

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Check auxiliary damper (1) with protective tube and spring pad (2) for damage, replace if necessary.

IMPORTANT: Coat contact surface of spring pad (2) to shock absorber with Circo Light.

Fig 7: Identifying Auxiliary Damper And Spring Pad

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Attach support cup to piston rod.

Insert shock absorber in tensioned coil spring.

Fig 8: Inserting Shock Absorber In Tensioned Coil Spring

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Check support bearing for damage, replace if necessary.

Attach support bearing and plate to piston rod.

IMPORTANT: One threaded bolt (1) on the support bearing must be on one plane with the bore in the rubber mount (2) and the opposite side of the bush (3).

Fig 9: Identifying Jacking Point

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Replace nut and tighten down with special tool 33 0 040 .

Tightening torque 33 52 2AZ .

IMPORTANT:

Impact screwdrivers are prohibited!

Risk of damage inside the shock absorber!

Fig 10: Identifying Jacking Point

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IMPORTANT: Align support bearing by way of spring pad to end of coil spring.

Fig 11: Identifying Jacking Point

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IMPORTANT: Lower end of coil spring must rest on stop of spring pad!

Relieve tension on coil spring.

Fig 12: Identifying Jacking Point

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Installation note:

Secure upper spring strut in body.
Align shock absorber eye to swivel bearing by turning shock absorber.
Code spring strut with ISID tester and check software version.