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(2) Fit the collar and lock nut into the ball screw on the front (same procedures as described in
steps 1-7-2 (8) and 1-7-2 (9)).
∗ Be careful not to drop the set piece.
Put the stepped part of the lock nut in contact with the collar.
Mount the collar and lock nut on the Y ball screw.
To mount the lock nut on the Y ball screw, turn the lock
nut to mount it to the top end of the Y ball screw, and
then insert the Y ball screw into the coupling.
Lock nut turning direction