This is a video on how to replace the key cylinder in a commercial storefront door.
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.
Push the cylinder out of the lock maybe you need to push hard step 2.
Place the nuts and bolts aside.
How to remove cylinder door locks.
This is the easiest way to rekey your door if you re giving the cylin.
This can be done in multiple ways.
Locate the lock cylinder on the interior face of the door.
If you are able to gain access to the interior of the room through a window or some other means this is usually the easiest way to remove the lock.
Measure the size of the old cylinder.
Slide the bars slightly away from the cylinder towards the vertical sides of the doorframe.
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.
Remove the nuts and bolts securing the lock bars to the cylinder with a wrench.
If these doors are locked it can be difficult to remove the lock and replace it with a unit that works.