1. Open the lock core structure first, then remove the panel, remove the two lock pins on the inner panel of the door lock, and then remove the lock cover.
2. Remove the screws on the deflector of the door-side lock body, and then pull the lock cylinder directly out.
3.Finally, replace the new lock cylinder and reinstall the panel.
What to pay attention to when replacing the lock cylinder:
1. When replacing the lock cylinder, it is necessary to select the lock cylinder according to the size of the old lock cylinder. If the lock cylinder size is not suitable, it cannot be installed. In addition, when purchasing anti-theft cylinders for doors, try to choose some big brands or products with good quality. Although these products may be relatively expensive, their safety is very reliable. For inferior products, a piece of aluminum foil may accidentally open the door.
2. When replacing the lock core, be sure to check whether the elasticity of the door lock spring is good. A good spring not only has a smooth surface, but also feels very soft, and is neither too hard nor too soft. It also does not affect the feel and life of the door lock. A defective spring can easily cause the handle to sink, affecting the service life of the door lock, so you must choose carefully and don't be careless.
3. When we remove the old lock core, we must first control the force to a certain extent and never damage the door lock. Also, when installing a new door lock, the door screws should not be tightened too much, otherwise it will directly affect the opening of the handle.