You may also need to use a wire tool or a paper clip. If your knob or lock has no screws on it, insert a paperclip into the small hole on the side of the doorknob. This should release the knob latch and will allow you to pull off the knob. [2] X Research source
You can find a new lock that meets the measurements you took at a home improvement store, locksmith, or online. If you buy the same brand, your new lock will match your other locks, and you will most likely be able to install it using the existing holes.
If you bought the wrong lock, take the old lock that you removed back to the hardware store and ask for help finding a lock that fits your needs.
It’s best not to reuse your old screws, since they might be old and weaker than new screws. If your new lock didn’t come with screws, buy ones that fit the lock and match the color of your hardware.
Drive screws into the holes on the inside door knob plate to finish putting the lock back together.
You can find kits online and at hardware and home improvement shops. Read your kit’s instructions carefully, in case there are any minor differences specific to your brand.
You can also use a stretched out paperclip or pin instead of the tool. If you’ve lost your key, you’ll need to remove the entire lock and bring it to a hardware store or locksmith to have a new key made. If your lock doesn’t have a side poke hole, you’re better off replacing the whole lock. Your lock is probably complicated enough that it requires a locksmith to rekey.
If your see rust or other signs of wear and tear inside the lock, you should just replace the entire lock. [10] X Research source
Keep constant pressure on the plug and follower, and make sure they’re always in contact as you slide the plug out, so that the lock pins and springs don’t pop out and fly everywhere. [13] X Research source
For example, the code might list the correct order as blue, red, red, blue, yellow, starting from the side opposite the keyhole. Correctly installed pins should be flush with the surface of the plug; they shouldn’t stick out over their slots.
It’s a little tough to manage, but try to keep a hand on the exterior faceplate when you remove the interior one. On some models, the exterior faceplate doesn’t screw into place, so it can fall to the floor when you pull out the interior plate.
Sometimes the set plate and bolt are attached but, on some models, they’re separate components.
Replace the entire deadbolt with a new one if the lock is worn or if you just want a new look.
Drive the new screws through the set plate and into the door to secure the new lock. If your new lock didn’t come with screws, make sure you buy new ones that match your hardware’s color. Deadbolts only have 2 screws, so they’re a lot easier to line up and install properly.
