Start by removing the thin piece of steel across the top of the tumbler pic 1.
How to remove door lock cylinder without key.
At this point the square tab on the spindle is aligned with the square.
To bump a lock the bump key is inserted into the keyway and pressure is applied via a hammer or a screwdriver.
That will allow you access to the pin springs the top pins and the bottom pins.
If you have plenty of time then drill away if you have a small grinder cut the face of the the cylinder off as close to the door face first.
You can see the pin springs sticking out in pic 2.
Once this is removed a locksmith can re key this for you.
Open the door and look for the latch plate along the door s edge.
Unscrew this plate and remove the latch from the door if possible.
Careful of sparks on the glass as they tend to stick.
The pressure exerted on the bump key causes the key pins to push the driver pins above the shear line.
Pull the knob off while the knob clip releases from the pressure you ve applied with the paper clip.
Look for a small set screw at the base of the handle.
At this exact moment if the right amount of torque is applied you will be able to unlock a door without a key.
Use lock picking tools legally to unlock your own door.
How to remove a door lock without a key.
Cylinder locks are extremely common but how to remove the cylinder is not quite as obvious as a knob door lock.
Removing a cylinder door lock.
Use the flat head screwdriver to turn the spindle in the center of the door lock cylinder counterclockwise until it stops.
Removing the cylinder from a door lock is a simple way of keeping the lock handle that you have while changing the cylinder lock inside of it.
Step 2 use a paper clip to firmly press into the knob hole located on the side of knob.
Remove this screw using a drill or screwdriver.