Step 1 steady door.
How to change a mortise door lock.
Place two screws from your new door lock kit in the doorjamb to hold the template in place then use the bit from your lock installation kit to drill a hole where the new doorknob will go.
Unscrew the lock cylinder from the body of the mortise lock by turning it counterclockwise to the left.
Measure the depth width and height of the lock mortise.
Whether any of them will fit in your existing mortise is another question.
Step 2 mark lock position and outline.
Remove the screws attaching the inside face plate to the edge of the door as well as the plates on the door faces.
You will undoubtedly have to drill for the cylinders.
Paint over the block to match the rest of the doorjamb.
There are certainly modern mortise locks which accept pin tumbler cylinders.
You ll usually find there s a metal cover screwed to the mortice lock which will come away as you unscrew with some more screws underneath holding the actual lock in place.
You ll see that on the narrow part of the door there is a plate that goes over the lock cylinder.
Hopefully helpful when rehabbing old houses.
Use a table saw and miter to cut.
First you need to make sure the door stays steady.
5 carefully thread the new cylinder into the body of the mortise lock.
You may need to drill new knob latch holes as well though decorative brass or chrome plates can hide a multitude of sins.
How to replace a mortise lock with the door open unscrew the retaining screws.
You may need to enlarge the mortise.
Use extreme caution not to cross thread the cylinder as this may ruin the entire lock.
Step by step instruction to install a mortise lock.
How to replace a mortise lock with a cylindrical lock.
Convert a door that has a mortise type lock set installed to the newer and cheaper cylinder type lock sets.
Use a screwdriver to.
Remove the screws that are holding this plate on and make sure that you put them in an area that won t get disturbed during the next steps.
Once you ve removed the door lock template you have a space perfectly primed for your new lock.