3 if this does not help remove the knob.
Front door lock not working.
If you can put the key in the lock but cannot to turn it the lock may have seized because dirt or grime has gotten caught in the mechanism.
If it is hold the key with a heavy glove and heat it with a match or lighter and then work it gradually into the keyway.
2 hold the knob on the other side of the door and turn the loose knob clockwise until it fits snugly.
If your door is badly warped it may not seal properly even when you move the door jamb.
Loose door locks door knobs and door handles.
Never use oil for this task.
How to fix a door that will not lock things you will need.
If your doorknob mechanism fails internally you can t repair it.
Next the lock needs to be lubricated.
1 loosen the setscrew on the knob s shank.
In the future keep a lock de icer on hand.
You can tighten a simple interior mortise lockset like the one shown at left as follows.
Fixing or repairing a door lock may seem like a daunting task but it can be very simple to fix.
Check the draft.
To clean the lock mechanism insert a damp cotton swab into the keyhole and jiggle it around to attract the dirt.
Watch as a professional home repairman shows how to fix door.
The complete lockset including the doorknob.
If the key won t go into the lock ask yourself if the weather is cold enough for the lock to be frozen.
5 door lock problems that should not be ignored 1.