If you re installing a lockset in an existing door take out the old lockset and measure the backset the distance from the door edge to the center of the lockset hole.
How to install new locks on old door.
If the new plates are slightly larger than your old deadbolt mark a line around the new faceplates and chisel.
With a square extend this mark across the door s edge and 3 inches onto one face.
Simply break the toothpick off after inserting it.
Remove the existing door lock from the door if there is one.
Open the door halfway and tap two shims one from each side between the floor and the door bottom to hold it steady.
Insert the new bolt into the hole for the bolt mechanism and secure it to the edge of the door with two screws.
Install the faceplate on the edge of the door and fasten it with the screws provided.
Insert the new lock assembly into the door with the slanted side of the lock facing the direction that the door.
The most comprehensive method of ensuring security it involves removing the existing lock from the door including the handle if it s a handle lock combo and then installing.
Open the door and remove the screws from the interior.
Refer to this when you buy your new lockset to make sure the hardware is compatible.
Insert the new bolt into the opening on the edge of the door and fasten it to the door with the provided screws.
Insert the exterior part of the lock into the door by feeding the long metal piece through the opening in the center of.
The measurement is usually 2 3 8 inches for interior doors and 2 3 4 inches for exterior doors.
Measure up from the finish floor 36 inches or the height of other knobs in the house and mark the door s edge.
How to install new door locks 1.