AR32.25-P-1016I Remove/Install Rear Suspension Strut

Remove/Install Rear Suspension Strut
- except CODE (487a) Active body control (ABC)







DANGER:
- Lethal injuries are possible if vehicle slips off of lifting platform
- Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer.

CAUTION:
- Replace self-locking nuts and bolts
- See special information on AIRmatic

1 Use Star Diagnosis to drain struts (41) prior to working on them.
2 Remove rear wheels
3 Remove cover (arrow) in parcel shelf
4 Unscrew pressure line connection (41a).

CAUTION: Residual pressure in strut up to 3.5 bar. If residual pressure valve is damaged, replace the strut (41).

NOTE: Seal off pressure line with blind plugs during repair work.

- If pressure line connections or pressure lines are damaged, Repair AIRmatic pressure line connection.

5 Unscrew nuts (41b).

CAUTION: Installation: Fit nuts (41b) and tighten after filling the suspension strut with the vehicle ready to drive.

NOTE: To facilitate tightening operations and ensure the correct torque on the nuts (41b), it may prove useful to remove the trim from the C-pillars.

6 Separate plug-in wiring connection (Y53x1/Y54x1).
7 Unscrew bolts (72d) for suspension strut cover (72c)
8 Unscrew nut (78c) and press linkage rod (78) from torsion bar (77).
9 Unscrew bolts (41c/41d) connecting strut (41) to track control arm (72).

CAUTION: Installation: Fit nut (41d) and tighten after pressurizing the suspension strut with the vehicle ready to drive.

10 Unscrew bolts (41e/41f) connecting track control arm (72) to wheel carrier.

CAUTION: Installation: Fit nut (41e) and tighten after pressurizing the suspension strut with the vehicle ready to drive.

11 Pull down track control arm (72) and remove strut assembly (41) by lowering it and pulling it out to the side.

CAUTION:
- Do not damage brake hose.
- If replacing or reinstalling the suspension struts (41), check condition of suspension struts and if necessary, Dispose suspension strut.

12 Install in the reverse order
13 Use Star Diagnosis to recharge the strut (s).

NOTE: Fill to 5 bar.

CAUTION:
- During recharging the wheels should never be in contact with the floor; refilling with the suspension compressed leads to destruction of the air spring bellows in the strut (41).

14 Check AIRmatic for leaks.