How To Change A Mortise Door Lock

Use extreme caution not to cross thread the cylinder as this may ruin the entire lock.

How to change a mortise door lock.

Step 2 mark lock position and outline. 5 carefully thread the new cylinder into the body of the mortise lock. You may need to enlarge the mortise. How to replace a mortise lock with the door open unscrew the retaining screws.

Use a table saw and miter to cut. Measure the depth width and height of the lock mortise. 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.

Step by step instruction to install a mortise lock. Once you ve removed the door lock template you have a space perfectly primed for your new lock. There are certainly modern mortise locks which accept pin tumbler cylinders. Since you are going to do a lot of hammering and drilling ensuring.

With the screws out carefully prise out the lock. Step 1 steady door. Unscrew the lock cylinder from the body of the mortise lock by turning it counterclockwise to the left. Hopefully helpful when rehabbing old houses.

Open the door that you want to change the lock cylinder on. You will undoubtedly have to drill for the cylinders. You ll see that on the narrow part of the door there is a plate that goes over the lock cylinder. You may need to drill new knob latch holes as well though decorative brass or chrome plates can hide a multitude of sins.

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. Whether any of them will fit in your existing mortise is another question. Use a screwdriver to. Paint over the block to match the rest of the doorjamb.

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.