When it comes to door locks, thumb turns are one of the most common and popular types of locks. They are easy to install and use, and offer a great level of security. However, sometimes it can be necessary to undo a thumb turn, for example if the lock needs to be replaced or repaired. In this article, we will look at how to undo a thumb turn, and the different tools and steps you need to take.
The first step to undoing a thumb turn is to identify the type of thumb turn you have. There are two main types of thumb turns available: standard thumb turns, and mortise thumb turns. Standard thumb turns are the most common type, and are usually found on residential doors. Mortise thumb turns are more complex and are typically used on commercial doors.
Once you have identified the type of thumb turn you have, the next step is to remove the faceplate. This is the metal plate that covers the thumb turn and holds it in place. Depending on the type of thumb turn you have, you will either need a flat-head screwdriver or an Allen key. Use the appropriate tool to remove the screws that hold the faceplate in place, then carefully remove the faceplate.
Once the faceplate is removed, you will be able to access the thumb turn mechanism. Depending on the type of thumb turn you have, you may need to use a pair of pliers to loosen the thumb turn. For standard thumb turns, use the pliers to turn the thumb turn counter-clockwise until it comes loose. For mortise thumb turns, use the pliers to loosen the screws holding the thumb turn in place, then carefully remove the thumb turn.
Once the thumb turn is removed, you will be able to access the inner workings of the lock. Depending on the type of lock you have, you may need to use a screwdriver to remove the screws that hold the lock in place. Once the screws are removed, you can carefully remove the lock from the door.
Finally, you can replace the thumb turn with a new one. Make sure to use the same type of thumb turn as the one you removed, and use the same screws to secure it in place. Once the thumb turn is in place, replace the faceplate and secure it with the appropriate screws.
In conclusion, undoing a thumb turn is a relatively straightforward process. All you need to do is identify the type of thumb turn you have, remove the faceplate, loosen the thumb turn, and remove the lock. Then, you can replace the thumb turn with a new one and secure it in place. With the right tools and knowledge, you should be able to undo a thumb turn with ease.