31 12 002 Removing and Installing/Replacing Top Left Control Arm

31 12 002 Removing and installing/replacing top left wishbone

Special tools required:







NOTE:
Control arms with + or - marking (see illustration) are camber correction arms:
- Underdimension variant
+ Overdimension variant

These camber correction arms are used to correct the camber values by 30 minutes. To be used only if the tolerance values are exceeded or undershot.
An unmarked wishbone is a standard part.







Necessary preliminary tasks:
- Remove left partition wall for units compartment
- Detach coolant expansion tank and place to one side

NOTE: Level switch can slip out of the coolant expansion tank in the process.

- Remove front wheel







Unscrew nuts (1).

Installation note:
Replace self-locking nuts.
Tightening torque 31 31 1AZ.







Slacken nut (1).
Remove jointed rod (2) from upper wishbone (3).

Installation note:
Replace self-locking nut.
Tightening torque 37 14 5AZ.







Secure special tool 31 5 220 with wheel studs to drive flange.
Support swivel bearing with special tool 31 5 220 and workshop jack.







Unfasten nut (1) and remove screw (2).

Installation note:
Keep wishbone to swivel bearing connection clean and free from oil and grease.
Note direction of insertion of screw.
Screw must rest correctly in groove of ball stud.
Replace self-locking nut.
Tightening torque 31 12 6AZ.







Release nuts of screws (1).
Remove screws (1); if necessary, lower/raise swivel bearing and spring strut using workshop jack.
Remove wishbone (2) from swivel bearing.

Installation note:
Replace screws and nuts.
Set ride height at front left (right) to normal position (see Technical Data) and tighten screw/bolt connection.
Tightening torque 31 12 5AZ.







After installation:
- Carry out ride height adjustment

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