Originally Posted by
Feathers McGraw
I can't see clearly from the diagrams in the SB, but I think that if you have the actuator rod able to rotate on the duplex bearing then setting the correct torque on the castellated nuts is going to be difficult during assembly or maintenance.
Figure 5 in the SB seems to show a square-section end to the actuator rod which could be used to prevent the rod from rotating while the nut is torqued.