The most comprehensive method of ensuring security it involves removing the existing lock from the door including the handle if it s a handle lock combo and then installing.
How to replace a stuck door lock.
Then measure the setback the distance from the doorframe to the hole.
Use a pen to test the turning mechanism.
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Measure the size of the lock.
Now you have the knowhow to repair your stuck door knob lock this time and any other time it may happen.
3 if this does not help remove the knob.
To ensure that your new lock fits in its opening use a tape measure to check the size of the hole where your lock used to be.
You will see how the door knob lock works and can then use the rag to wipe down the internal components.
2 hold the knob on the other side of the door and turn the loose knob clockwise until it fits snugly.
1 loosen the setscrew on the knob s shank.
You can tighten a simple interior mortise lockset like the one shown at left as follows.
This is a quick video to show you how to replace a sliding screen door lock.
Replacing knobs and calling locksmiths can be costly.