There are certainly modern mortise locks which accept pin tumbler cylinders.
How to change a mortise door lock.
Unscrew the lock cylinder from the body of the mortise lock by turning it counterclockwise to the left.
Paint over the block to match the rest of the doorjamb.
Use a table saw and miter to cut.
Use extreme caution not to cross thread the cylinder as this may ruin the entire lock.
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.
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.
Step by step instruction to install a mortise lock.
Whether any of them will fit in your existing mortise is another question.
First you need to make sure the door stays steady.
Once you ve removed the door lock template you have a space perfectly primed for your new lock.
How to replace a mortise lock with the door open unscrew the retaining screws.
Use a screwdriver to.
You may need to enlarge the mortise.
Since you are going to do a lot of hammering and drilling ensuring.
You may need to drill new knob latch holes as well though decorative brass or chrome plates can hide a multitude of sins.
With the screws out carefully prise out the lock.
How to replace a mortise lock with a cylindrical lock.
Step 2 mark lock position and outline.
Measure the depth width and height of the lock mortise.
Step 1 steady door.
You will undoubtedly have to drill for the cylinders.
5 carefully thread the new cylinder into the body of the mortise lock.
Convert a door that has a mortise type lock set installed to the newer and cheaper cylinder type lock sets.
Remove the screws attaching the inside face plate to the edge of the door as well as the plates on the door faces.
You ll see that on the narrow part of the door there is a plate that goes over the lock cylinder.