Rear Upper Arm

Rear upper arm

Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Preparatory work


Remove:
- the wheel
- the spring. See: Spring, M56, AW55-50/51SN, M66 Rear Spring/Shock Absorber

Removal

Removing the leak diagnostic pump
Applies only when replacing on the right-hand side:
Remove the pump for the leak diagnostic unit. See: Leak diagnostic pump, B5244S4, AW55-50/51SN, B5244S4, M56 Service and Repair.

Removing the upper control arm




Remove the screw for the wheel spindle.





Remove:
- the screw x1 for the sub-frame
- the control arm.





Caution! Use a transmission jack to avoid damaging to the screws.

Installation

Installing the control arm

Note! For tightening torques, see: Tightening torque [1][2]Specifications.

Install:
- the control arm
- the screw x1 for the sub-frame. Do not tighten yet
- the screw for the wheel spindle. Do not tighten yet.

Note! The rear suspension must be in normal position when tightening all the joints in the rear suspension where rubber bushings are involved, see Normal position Stay, Arm, Joint.

Tighten the screws. For tightening torques, see: Tightening torque [1][2]Specifications.

Caution! Use a transmission jack to avoid damaging to the screws.

Installing the leak diagnostic pump
Applies only when replacing on the right-hand side:
Install the leak diagnostic pump. See: Leak diagnostic pump, B5244S4, AW55-50/51SN, B5244S4, M56 Service and Repair.

Finishing


Install:
- the spring. See: Spring, M56, AW55-50/51SN, M66 Rear Spring/Shock Absorber
- the wheel. See: Wheels Service and Repair.