Remove the casing bolts.
How to remove a lock on a door.
Remove the latch plate.
This allows you to pull the door knobs off the door from both sides.
In some cases door latch plate mortises might need to be cut or enlarged.
Begin by removing the screws from the door knob on the interior side of your door.
When you remove the faceplate it will reveal the inside of your knobset lock.
How to remove cylinder door locks.
Use a hammer and center punch to drive out the hinge pins if they are accessible.
By removing these screws you may be able to remove the lock and open the door.
Once you remove the screws the lock should become loose and you can pull both sides of the lock out of the door.
There should be a series of screws that connect that portion of the lock to your door.
Remove the two screws from the latch plate on the edge of the door and remove the latch from the opening.
Remove the screws in the knob with a screwdriver.
Step 2 take the door off its hinges.
Most commonly these are found on interior doors within a home and are great for providing a bit of added privacy in bathrooms offices and other spaces.
The latch plate is the small piece of metal held in place on the edge of the door by two screws.
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.