When the key is aligned and removed the pin springs push the top and bottom pins down locking the cylinder in place.
How to change door lock cylinder without key.
The top pins and bottom pins line up along the shear line when a key is inserted allowing the lock cylinder to spin freely.
Prop open the door as you change the lock.
Insert another flathead screwdriver under the edges of the tabs holding the lock cylinder in place within the housing.
The pin springs top pins and bottom pins all make up how the lock works.
Insert a flatheaded screwdriver into the spindle housing hole.
How to remove a door lock without a key.
Open the door and look for the latch plate along the door s edge.
Look for a small set screw at the base of the handle.
Remove this screw using a drill or screwdriver.