1 loosen the setscrew on the knob s shank.
How to fix my front door lock.
Using gloves dry the key and insert it slowly into the lock.
Don t call the locksmith just yet.
Open the door wide and put on a pair of safety glasses to protect your eyes.
Inspect the strike plate on the edge of the door frame.
3 if this does not help remove the knob.
The basics of how to fix a door lock that is jammed in this way comes down to heat.
Warm the key by placing it on top of a radiator or in a bowl of hot water.
Equip a rotary tool with a carbide tip bit.
If the weather is very cold don t discount the possibility that the lock might have frozen.
A latch bolt that sticks in the strike often leave tell tale marks or scrapes on the.
The best way to thaw out a lock is to insert a heated key into it.
If it is loose or has slipped out of the mortise place it back in the mortise and tighten the screws with a phillips screwdriver.
In some cases you will have to use a de icer on your locks to resolve the problem.
Watch this video and l w.
2 hold the knob on the other side of the door and turn the loose knob clockwise until it fits snugly.
You can tighten a simple interior mortise lockset like the one shown at left as follows.