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How to repair mortise door lock.
1 loosen the setscrew on the knob s shank.
A video that shows how to remove a mortise door lock and take it to a locksmith for repair and re install the lock.
Firstly remove the handle from one side of the door and remove the spindle metal bar that connects both handles through the lock for a dead type lock there will not be a handle connected in any way to the lock.
If the latch sticks the knob may be screwed on too tight.
3 if this does not help remove the knob.
Remove the front face plate from the lock that is visible 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.
This mortise lock set is installed in a 1930 colonial in the boston area.
You can tighten a simple interior mortise lockset like the one shown at left as follows.
Remove a knob from the spindle.
Meet the mortise lock and door knobs.
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.
If you have questions please ask.
Loosen the set screw.
Notice the set screw on.
Cleaning and repairing an antique mortise door lock.
Try loosening the flathead screw on the base of your doorknob.