This mortise lock set is installed in a 1930 colonial in the boston area.
How to fix a mortise door lock.
Soften the paint.
Hold down the spray button until the wd 40 begins to overflow from the lock opening.
Starting at the top of the faceplate outline make a series of closely spaced chisel cuts about 1 8 inch deep inside the marks.
Examine the mortise lock.
If the latch sticks the knob may be screwed on too tight.
1 loosen the setscrew on the knob s shank.
If the thumbturn for the deadbolt is causing the bolt to jam and lock you out when it s in the wrong position you may.
Lightly sand the patched areas.
This screw should hold the knob securely to the spindle when you turn the knob.
Make a series of closely spaced cuts into the mortise area.
Do the same for the recessed patch on the edge of the door.
2 hold the knob on the other side of the door and turn the loose knob clockwise until it fits snugly.
Cut through the base of the cuts to empty the mortise of excess wood.
If you have questions please ask.
The fix a short term fix is to move the strike plate to align better with the stuck door latch.
3 if this does not help remove the knob.
Meet the mortise lock and door knobs.
Today we are discussing how to remove an entry mortise lock with a thumb latch on the exterior instead of a regular knob.
You can tighten a simple interior mortise lockset like the one shown at left as follows.
Don t be afraid to use a liberal amount of oil a sticky lock needs the attention.
Loosen the setscrew securing either one of the doorknobs to the square knob shaft.
To remove a mortise lock set cylinder for repair see illustration for how to tighten a loose doorknob remove the deadbolt knob by loosening the setscrew in the sleeve of the knob using a standard screwdriver or allen hex wrench or by removing any mounting screws.
How to fix antique mortise door mechanisms 1.
Press down on the button on the rear of the wd 40 canister to begin releasing the lubricant into the lock.
Spray the wd 40 into the lock.
Try loosening the flathead screw on the base of your doorknob.
Notice the set screw on the base of the knob on the right.
Pull the knob off the shaft.
Place strips of tape around the exterior and interior patched holes to protect the finish on the door.
Most mortise locks are mounted with screws driven through the face plate into the door edge.
Then on the faceplate loosen the setscrew opposite the lock cylinder and unscrew the lock cylinder.
The knob and or the spindle may.
