The first step is to actually remove the old door knob.
Replace door lock on old door.
Go ahead and remove the knob by.
First remove the old door lock by unscrewing the doorknob on the inside of the door.
Remove the two screws from the latch plate on the edge of the door and remove the latch from the opening.
These are the parts used.
This allows you to pull the door knobs off the door from both sides.
Many homeowners have old doors somewhere in the house that they no longer have the keys for.
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Go ahead and take your philips head screwdriver and pull out the screws that are on the base of the knob.
Remove the interior knob and thumb turn lock hardware to expose the holes in the door.
In some cases door latch plate mortises might need to be cut or enlarged.
Measure from the center of the knob hole to the center of the lock hole to determine the spread.
Step 2 remove the old lock.
The screws may be obscured by the door handle so you may need to turn the handle to reach the screws.
If you re replacing the entire lock start by inserting the bolt through the hole in the edge of the door where the old bolt fit.
If you are able to gain access to the interior of the room through a window or some other means this is usually the easiest way to remove the lock.
If your brand s plate and bolt are separate components place the new set plate over the indentation on the side of the door where the old plate fit.
Both doorknobs should come loose from the door when you remove the screws.
If you have an old door lock that you need to replace whether it s because the lock is broken or you re simply concerned about a stray door key you could call a professional locksmith to come change the lock for you.
How to change an old mortise lock handle patio door with new 2019 parts.
It includes premium precision components a solid brass faceplate and strike and steel case.
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.
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Begin by removing the screws from the door knob on the interior side of your door.
However calling a locksmith will generally set you back about 50 100 and you could probably do the job just as well yourself.