rhodes212

How do you determine which torque value to use for the front control arm and torque strut? I have found two different values based on bolt size. This is for a 2012 GLK350 Base.

(RWD) Lower control arm (cross strut) to subframe M14x115 = 80Nm + 120 degrees
(RWD & 4matic) Lower control arm (cross strut) to subframe M14x120 = 120Nm + 180 degrees
(RWD) Lower control arm to spindle = 50Nm + 60 degrees

(RWD) Torque strut to subframe M14x115 = 80Nm (60 ftlbs) + 120 degrees
(RWD & 4matic) Torque strut to subframe M14x120 = 120Nm + 180 degrees
(RWD) Torque strut to spindle = 50Nm (37 ftlbs) + 60 degrees

calder-cay

It's quite possible I'm still half-asleep.

quote: "have found two different values based on bolt size".

Seems the answer is in that sentence ... did you measure the bolt size in your GLK??

rhodes212

I'd like to be able to know before I start if the different bolt sizes were tied to a specific year or something else. Weird thing is that all the videos I have seen only use the lower torque value, even on 4Matic.
Just wondering if someone knew