I'm confused about measuring and setting the 12-point nut on the diff's driveshaft pinion/flange.

Since my mechanic failed to measure/count the threads on how far-down the original 12-point nut was down, how do I determine how far to screw down the 12-point nut?

The W124 CD-ROM and paper manual is very vague here.

The MB manual states a range of 50-100 N-centimeters on old bearings, 100-150 N-cm on NEW bearings. Both readings are taken with the diff dry/empty of oil and NO spider-assembly.

1) What should the range be with the spider-assembly in?

2) Do I attach the appropriate range torque wrench to a 12-point socket and slowly tighten the 12-point nut until it reads the torque-range (TBD)?

OR

3) Do I attach a rotating/spinning torque meter to a 12-point socket, and spin the pinion by rotating the output flanges in unison at 60 RPM?

Something else?

Thanks in advance,

:-) neil