4. Take out the latch-cover screws and remove the latch-cover, latch-spring, and latch.

5. Take out the stop-screw and remove the stop.

6. Take off the carrier-ring.

De Bange Obturator.

7. Remove the spline-screw and take off the nut.

8. Take out the spindle.

9. Take out the spring.

10. Take off the obturator cups and pad.

Freyre Obturator.

7. Remove the spline-screw and take off the nut.