31 12 138 Replacing Rubber Mounts On Both Tension Struts (AWD)
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Special tools required:
- 31 3 031
- 31 3 032
IMPORTANT:
The rubber mounts on both tension struts must be replaced! Note that the rubber mounts may only be changed once.
Carry out check:
There must always be a minimum amount of play in the guide joint.
- Check guide joint playNOTE: For this purpose, apply light pressure to the tension strut (in the area of the guide joint) in the horizontal and vertical directions.
- Play is OK: Check bolt connection (see Point 2)
- Play is not OK: Replace rubber mount and guide joint
- Check bolt connection (tension strut to guide joint) by tightening to 60 % of tightening torque and listening for cracking sound.
Tightening torque 31 12 20AZ .
- Torque wrench cracking sound: Replace rubber mount
- Bolt connection turns: Replace tension strut and guide joint
Replacing rubber mount:
Remove both tension struts.
IMPORTANT:
If the tension struts already feature an identification mark with a center punch, it is necessary to replace both tension struts.
Mark tension struts with a punch mark in area (A).
Using a press and special tools 31 3 031 and 31 3 032, press rubber mount out of tension strut.
NOTE:
Special tool 31 3 031 must be exactly flush with rubber mount bushing.
Installation:
Keep rubber mount and bushing in tension strut clean and free from grease.
Align rubber mount by way of arrow to marking on tension strut and press in. The deviation (A) must not exceed ± 5°.
Installation:
Protrusion (A) equally large.