How to change the lock of Hejing Lingfeng Apartment

1. Choose a suitable door lock according to the size of the door and the size of the door hole. 2. The inner handle must be removed before installation. First use the installation batch to press the positioning card on the inner handle, push the inner handle out, and then unscrew the inner cover ring. 3. Adjust the position of the lock body: Adjust the washer on the outer handle so that the center of the lock body is at the center of the door thickness. 4. Install the outer handle: First install the lock tongue into the lock tongue hole on the side of the door, then insert the lock body from the outside of the door and buckle the end of the lock tongue to combine the lock body and the lock tongue. 5. Install the fixing plate: Put the fixing plate onto the outer handle part from the inside, then use two long screws to connect the outer handle part and tighten it. The outer cover ring is horizontally close to the door lift. 6. Install the inner handle: Put the inner handle on the handle tube, and then push the inner handle so that it is stuck by the positioning card. 7. Try to close the door, draw a line horizontally with the center line of the lock body, confirm that the installation positions of the lock plate and the lock tongue are consistent, mark with a pencil and drill the installation holes according to the specifications of the lock box. 8. When installing the lock plate, you must confirm that the latch tongue can enter the lock plate after closing the door (and when the safety pillar is pressed down by the buckle plate, it can prevent the latch tongue from retreating and act as a safety insurance). Finally, fix the lock tongue with screws. And the lock plate, if the door opens and closes smoothly, the installation is successful.