Replacing Both Control Arm Brackets

31 12 049 Replacing both control arm brackets

Special tools required:
^ 00 7 500
^ 31 2 151
^ 31 2 152
^ 31 2 153
^ 31 2 154
^ 31 2 157

Important:
If a bracket is replaced, a new bracket must also be installed on the other side.
After installation, check free travel of other components to control arm holder.





Necessary preliminary tasks:
Remove reinforcement plate.





Unfasten screws. Holder to engine carrier.
Installation: Tightening torque: M10 10.9 (Replace screws)
Damaged threads

Punch-mark center of control arm.





Assembly of special tool 00 7 500.





If necessary, remachine special tool 312 151 as per drawing.





Detach holder with special tool 00 7 500 and 312 151 from control arm.

Important:
Never re-use a rubber mount pulled off from control arm.
Rubber-coated inner sleeve is destroyed if pulled off dry.





Mark measurement (A) at bottom on control arm pin.
A=287.3+1 mm





Installation: Outer edge (B) of rubber mount must be flush with marked measurement (A).





Important: If the position of the rubber mount is not strictly adhered to, this will result in impaired vehicle handling and early rubber mount wear!





Coat control arm pin and rubber mount bushing with low surface-tension water.
Mixture ratio:
1 part soap to 20 parts water.
Ensure positive locking (1) of bushing and control arm pin.
The larger diameters of the bores (2) point to the engine support.

Attach special tool 31 2 153 with extensions (1) from puller set to control arm opening.
Install new holder with special tools 00 7 500 and 31 2 152/31 2 154/31 2 157 onto control arm up to applied marking.
Relieve tension on special tool. Check position of rubber mount to marking (measurement A) and correct if necessary.