Push the cylinder out of the lock maybe you need to push hard step 2.
How to remove lock cylinder from store room door.
If you want to keep the lock handle and trim on a door but need to have the lock changed you can just replace the cylinder inside a pin and tumbler lock.
Remove the old cylinder from your door.
Another way to unlock a door without a key is to simply work on making the door and its accompanying door lock somewhat irrelevant.
This is a video on how to replace the key cylinder in a commercial storefront door.
Locate the lock cylinder on the interior face of the door.
One of the most common ways to accomplish this is to kick the door down or ram it so that the lock is dislodged from the door jamb.
Unscrew the main screw red dot place the key inside the cylinder and turn it to the left or right to make sure that the carrier is parallel with the cylinder.
This is the easiest way to rekey your door if you re giving the cylin.
Place the nuts and bolts aside.
If these doors are locked it can be difficult to remove the lock and replace it with a unit that works.
Many homeowners have old doors somewhere in the house that they no longer have the keys for.
Measure the size of the old cylinder.
Remove the nuts and bolts securing the lock bars to the cylinder with a wrench.
This can be done in multiple ways.