Replacement of the flexible coupling of the cardan shaft must be carried out in the following order. Remove driveshaft and remove bolts (arrows, fig. 10.29), while holding the bolt head with a wrench, turning only the nut, and remove the flexible coupling.
When installing the coupling, it is necessary that the arrows (11, see fig. 10.24) were directed to the cheeks of the flange. See above for tightening torques for new self-locking nuts.