Torque Specs Upper Control Arm GL (X164)

Question by Papushkian posted 3 months 3 weeks ago in 2007-2012 (X164)

Hello,

In changing the airstruts on my 2011 Mercedes GL 450, I damaged the boot for the ball joint on the Upper Control Arm.  I decided to change both sides since it's a pretty simple procedure.  I already installed the right side, but I have not yet tackled the driver side.  I have not had any luck in finding the torque specs and was wondering if anyone could help me.  I tightened the bolts to the frame once I lowered the car to the ground (at ride height), but I am not sure if it's too tight because I can hear a lot of squeaking of what I presume are the bushings.  I do know that the torque spec for the ball joint to the steering knuckle is 20Nm and another 90 degrees, but I have had no success in finding the torque specs for the bolts to the frame.  Would anyone have those specs, and if so, would they please share them?

Thank you,

Fernand