It will be required to you: screw-drivers with flat and crosswise edges.

1. Remove the door lock (see. "Removal and installation of the lock of a door of a back").

2. Turn out screws of top …	3. … and lower fastenings of the handle of a door of a back …

4. … also remove the external handle of the lock of a door of a back.	5. Turn out the screw of fastening of a rotary plate …

6. … remove a plate …	7. … also take from the handle the button of opening of the lock together with a spring.

8. Insert a key into the lock cylinder and take the cylinder from the lock button.

9. Collect the handle of the lock of a door of a back and establish it on a door upside-down.