I'm confused. The FSM says to:

1. Measure the frictional torque before removing and record the measurement.

2. Remove the 30mm nut.

3 Pull the yoke.

4. Reinstall the nut in increments while frequently checking frictional torque.

5. If the recorded value of frictional torque is reached before the 30mm bolt has been torqued to 180 nm then replace the elastic spacing sleeve.

So, if this is correct why would anyone start this project without a new spacing sleeve? Which one of the dozen listed for a 1985 380 SE differential is the correct application for my 1985 380 SE? How do I find out which one is right?

Would a torque wrench in increments of Ncm or a torque angle and rotational check test measure gauge meter be best for this job?

Do I have any of this right?

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84 300SD
85 380SE
83 528e
95 318ic