Quote:
Originally Posted by layback40
The yoke will vibrate on the pinion shaft & so become loose. In the end the diff will be toast & maybe the tail shaft will come off.
As I said before, go talk to some one who rebuilds diffs all the time. I have never known of a pinion nut to be tightened by checking the preload. It is not the same as a front wheel bearing set up.
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If a crush collar is used between the bearings the pinion nut is tightened until the desired turning torque for the pinion is obtained. This is very common in newer cars, I'm not sure if Benz has gone to a crush collar or when if they have.
A quick check of my CD repair manual finds 124's and 201s use a crush collar. Likely other models do as well.