37 12 092 Replacing Rear Left or Right Spring Strut Shock Absorber

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

Special tools required:







WARNING:
Completely read the respective 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:
1. Prior to each use, check the special tools for defects, modifications and operational reliability.
2. Damaged/modified special tools must not be used.
3. No changes or modifications may be made to the special tools.
4. These special tools are intended solely for the purpose of tightening and relieving cylindrical and tapered suspension springs.
5. Keep special tools dry, clean and (down to the spindle) free from grease.
6. Impact screwdrivers are prohibited.
7. Do not compress coil spring to full extent.







IMPORTANT: When replacing shock absorber/spring strut, renew auxiliary damper.







Necessary preliminary tasks:
- Remove rear spring strut shock absorber unit.







Removing:
Clamp special tool 31 3 341 in vice.

Mount special tools 31 3 353 with protective inserts from above onto special tool 31 3 341. Retaining bolts (1) must be felt and heard snapping into place.







Clean coil spring to remove all coarse dirt and mount on special tools 31 3 353.

WARNING:
Coils of coil spring must be fully inserted in depression of special tools 31 3 353 with protective insert.
Compress coil spring until stress on piston rod is relieved.







Release nut with special tool 33 0 040.
Remove spring pad with dust boot.
Remove shock absorber with auxiliary damper, protective tube and lower spring pad sideways from tensioned coil spring.







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







Unload coil spring and remove it with protective insert from special tools 31 3 353 .







Installation:

WARNING:
Do not compress coil spring to full extent.
Coils of coil spring must be fully inserted in depression of special tools 31 3 353 with protective insert.
Tension coil spring.







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







Insert shock absorber in tensioned coil spring.







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







Check support bearing (1) and spring pad (2) for damage, replace if necessary.

IMPORTANT: The arrows on support bearing (1) and spring pad (2) must be aligned.







Mount support bearing and spring pad on piston rod.

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







IMPORTANT: The marks (1) must be aligned with the hole in rubber mount (2).







Replace nut and tighten down with special tool 33 0 040.
Tightening torque 33 52 2AZ.
Relieve tension on coil spring.