Tools required for the Custom version: two 13 mm wrenches, a 5 mm pin punch, a medium size Seeger pliers to open, a hammer.
Proceed to remove the gearbox cover by unscrewing the two screws and nuts that hold it in place.
Then, using the pin crusher, remove the 6 x 40 spring pin binding the pinion to the handle pin.
Now slide the handle out of its housing, thus freeing the pinion.
Once the pinion is removed from the gear box, it will be possible to freely access the crown gear.
Only after removing the retaining Seeger and applying axial force, it is possible to remove the crown from the screw collar.
Once the crown removed, the drive key can be removed from its seat.