1 loosen the setscrew on the knob s shank.
How to fix door handle lock.
The knob will not turn to retract the stuck door latch.
Used by locksmiths and watch makers powdered graphite helps lubricate delicate moving parts.
The door latch is not extended before rotating the knob.
Work the key in and out a few times to work the product around the tumblers.
Look around the collar on the doorknob and identify the set screw that is threaded into the collar.
15 to 30 minutes this video will guide you through the process of repairing replacing or tightening your door handles at your home.
Shut the door and try to lock it.
The latch will not retract even when the knob is turned.
You can tighten a simple interior mortise lockset like the one shown at left as follows.
Identify the screw in the doorknob collar.
How to repair door lock handle lock repair here we look at repairs for lockets and knobs.
Try to open the door while it is shut.
Place all pieces of the door handle in the containers.
If exposed screws are being used you will have to find the set screw which is normally found on the inside of the door.
Pour vinegar into the container s.
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.
Apply a little powdered graphite into the handle s keyhole if the lock is stiff or hard to operate.
3 if this does not help remove the knob.
2 hold the knob on the other side of the door and turn the loose knob clockwise until it fits snugly.
Troubleshooting a stuck door latch.
If it won t lock open the door.
If it is a threaded shaft you will have to twist the shaft s handle to make it flush with the door.
Using either a screwdriver or allen key loosen the set screw and remove the handle which will uncover the shaft.
Take doorknob to hardware store if necessary.
Pour enough to submerge each part entirely.
