Measure the depth width and height of the lock mortise.
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.
Open the door that you want to change the lock cylinder on.
Step by step instruction to install a mortise 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.
How to replace a mortise lock with a cylindrical lock.
Use a table saw and miter to cut.
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.
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.
Hopefully helpful when rehabbing old houses.
With the screws out carefully prise out the lock.
Since you are going to do a lot of hammering and drilling ensuring.
Convert a door that has a mortise type lock set installed to the newer and cheaper cylinder type lock sets.
Step 1 steady door.
Use a screwdriver to.
There are certainly modern mortise locks which accept pin tumbler cylinders.
First you need to make sure the door stays steady.
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.
Step 2 mark lock position and outline.
You will undoubtedly have to drill for the cylinders.
You may need to enlarge the mortise.
5 carefully thread the new cylinder into the body of the mortise lock.
Paint over the block to match the rest of the doorjamb.
You may need to drill new knob latch holes as well though decorative brass or chrome plates can hide a multitude of sins.
Once you ve removed the door lock template you have a space perfectly primed for your new lock.