How to Install a Doorknob/Handle & Lock

Before a new doorknob can be put into place, you’ll need to remove the existing set.

• Utilizing your screwdriver, remove the screws holding in your doorknobs and the latch plate in place. 
• Once the screws have been removed, gently pull the knobs apart. After this, you can remove the latch and the exterior latch plate.
• If you are also replacing the deadbolt, unscrew that piece as well. In many cases, the screws for your deadbolt will be behind a plate.
• To remove this plate, you’ll need to remove the thumb-turn latch first. Look for the shaft that connects the thumb-turn to the inside of the lock. A small pinhole should be located on this shaft.
• With a paper clip or other similar item, simply press the pinhole to release the lever.
• Once the lever is removed, utilize your screwdriver to carefully pry the cover plate off the deadbolt. This will expose the screws, allowing you to remove the entire deadbolt lock.

If you haven’t already purchased a replacement set, grab your tape measure and take down measurements of the leftover hole. Measure from the center of the big hole to the edge of the door. This is called the backset, and measuring it will help you choose the right replacement set. Be sure to take measurements for both the door handle and the deadbolt if you are replacing both at the same time.

Not only will you want to choose your new doorknob based on the measurements you take, but you will also want to be careful that you notice which side of the door your locking mechanism is on before you purchase a new kit. Doorknobs are not reversible, so it matters whether your lock is on the inside or outside of the room in question.

Once you open up your new doorknob and lock set, install the latch plate. Screw the latch plate into place with the appropriate screws. Next, you can install the latch itself.

Once your latch is in place, take the doorknob piece featuring a long metal spindle and thread it through the latch.

After the first doorknob is installed, you can attach the second knob to the back side of the spindle, carefully lining the knobs up.

Once both knobs are in place, evenly tighten the screws back into place.

Finally, install your new deadbolt if needed. Follow the same steps as you did with the doorknob, installing the latch plate first. Pair the front and back of the deadbolt hardware together and affix with screws. Reverse the steps of removing the screw covering if one comes in your deadbolt kit. Place the thumb-turn lever on the deadbolt last.