528e 1985 drive shaft torque specs

[Notelect]

I got my driveshaft mounted to the rear dif and transmission. What are the torque specs for the guibo, and other nuts for both rear and front

Been searching cant find it anywhere online

Using self locking 10mm nuts for rear
Pt num 07129964672

Front is using bolts and nuts for the smaller guibo

[stuartinmn]

The Bentley repair manual has torque specs for the guibo (or flexible coupling) on page 15-10. They list it depending on the size and type of bolts used:
M10 8.8 grade 46 Nm or 34 ft-lb
M10 10.9 grade 72 Nm or 53 ft-lb
M12 123 Nm or 90 ft-lb

Torque specs for the driveshaft to transmission are on page 15-9 and are the same as above

Torque specs for the driveshaft to the differential are 72 Nm or 53 ft-lb

Torque specs for the center bearing to the body are 22 Nm or 16 ft-lb. There's also a preload spec for the center bearing - it should be preloaded towards the front of the car 4 to 6 mm for driveshafts with a front U-joint or flex coupling, and 4 to 5 mm for driveshafts with a front CV joint.

[Mike W.]

And that preload Stuart mentioned is important for minimizing or eliminating vibration.