So you lost the key and now you are unable to remove the lock.
How to replace door lock cylinder without key.
Turn the screw under the door latch counterclockwise with a flathead screwdriver and remove it 1 x research source put the screw somewhere safe because you ll have to screw it back in later step 2 turn the key a quarter of the way.
Use a sharp drill bit that is designed for metal drilling.
The goal is to drill through the pin tumblers not the keyway itself.
Quick lesson in locksmithing.
Once you ve drilled through and broken the pins you may need to insert a flat screwdriver to retract the latch and open the door.
The top pins and bottom pins line up along the shear line when a key is inserted allowing the lock cylinder to spin freely.
The pin springs top pins and bottom pins all make up how the lock works.
Aim the drill into the area just above the keyway.
Dump out the old pins insert the new key and use tweezers or small needle nose pliers to match the new colored pins to the color code on the special instruction sheet.
Step 1 remove the flat screw under the latch.
Insert the pins and reassemble the lock.
Prop open the door as you change the lock.
This will hide the latch in the internal components of the lock and allow you to.
Insert the key into the keyhole and turn it slightly so that it s in the open position.
Drill out the lock cylinder.
When the key is aligned and removed the pin springs push the top and bottom pins down locking the cylinder in place.
Simple to replace or change a security door lock without key.
Insert a flatheaded screwdriver into the spindle housing hole.