How to remove a door lock without a key.
How to change door lock cylinder without key.
Changing an interchangeable lock cylinder 1 remove the flat screw under the latch.
Look for a small set screw at the base of the handle.
Insert a flatheaded screwdriver into the spindle housing hole.
Quick lesson in locksmithing.
Remove this screw using a drill or screwdriver.
Insert another flathead screwdriver under the edges of the tabs holding the lock cylinder in place within the housing.
Prop open the door as you change the lock.
Unscrew this plate and remove the latch from the door if possible.
Open the door and look for the latch plate along the door s edge.