For the w123, the FSM section 00-211 gives some guidance for engine mounts.

But it's not clear.

It only gives torque ratings for the M10 (8mm allen) bolts that attach the mounts to the arms. 40Nm by the way. See attached.

It gives no guidance on the torque for the M8 (6mm allen) bolts that hold the mount to the body.

What do others use as a tool and a torque basis for the 6mm allen bolts?

I did a little searching and found that M8x18 bolts should potentially get 25Nm, or 18ft-lb max.

Honestly, Im not seeing how to easily get a torque wrench in to the inner bolts, so I think that wrist tight is prudent.

Though it can lead to overtorque, I think some anti-seize on the inner two 6mm bolts is prudent. If one of those seizes up, its a double problem. Plus, since youre likely only torquing it with a very short lever arm, finger tight, the slight bit of lube on the threads may actually allow the fastener to achieve a more correct torque.

Thoughts or opinions??

Attached Thumbnails

     

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