If the lock at home is changed, or it is too old, we can buy a new lock and replace it ourselves. Especially if the key is lost, it is more necessary to replace the new lock.
A new set of locks, screwdriver
Open the newly bought new lock box, in addition to the lock, there are screws, patches and other supporting parts.
The first step: Install the lock core first. The lock core is installed inside the door, the lock core has an iron ring as protection, first put the iron ring and then use the lock core to support the iron ring.
Step 2: Install the small iron sheet. The circle in the middle of the small iron sheet has two round holes. We need to align the round holes on the iron sheet with the round holes on the lock core and tighten them with screws. When turning the screw, you can press the lock core with the other hand to avoid sliding.
Step 3: Install the lock body. After the lock core is installed, there is a protruding "lock tongue" in the middle, there is a core hole on the ground of the lock body, align the core hole with the lock tongue, and then force a card, you can.
The core hole of the lock body can be rotated, and if it is found that the direction of the lock tongue is not correct, it can be rotated and then inserted.
After installing the lock, the lock will be changed, and you can use the key to try whether it turns normally.
If the lock core is too long, you can cut off a small piece of the lock tongue.