Identify the screw in the doorknob collar.
How to fix door handle lock.
Look around the collar on the doorknob and identify the set screw that is threaded into the collar.
Place all pieces of the door handle in the containers.
Pour enough to submerge each part entirely.
Work the key in and out a few times to work the product around the tumblers.
Take doorknob to hardware store if necessary.
1 loosen the setscrew on the knob s shank.
How to repair door lock handle lock repair here we look at repairs for lockets and knobs.
Take note of the type of resistance.
Shut the door and try to lock it.
Make sure that no part extends past the lip of the container it is placed in.
Using either a screwdriver or allen key loosen the set screw and remove the handle which will uncover the shaft.
If you have a key that won t work in the lock please see how to.
The knob will not turn to retract the stuck door latch.
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.
If exposed screws are being used you will have to find the set screw which is normally found on the inside of the door.
You can tighten a simple interior mortise lockset like the one shown at left as follows.
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.
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.
Used by locksmiths and watch makers powdered graphite helps lubricate delicate moving parts.
Pour vinegar into the container s.
If it is a threaded shaft you will have to twist the shaft s handle to make it flush with the door.
The door latch is not extended before rotating the knob.
Try to open the door while it is shut.
