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Hello, when changing the lock, it is best to find a professional lock changer to do it, thank you.
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Is the door lock locked in the second gear?
The lock cylinder is easy to remove:
Tool: A Phillips screwdriver. >>>More
Changing the lock cylinder is basically not, but if it is forced to open when the door is opened, it will hurt the lock body. Kiss.
At that time, I spent money to find someone to change it, and called him to ask him to come and reinstall it; If it's your own, reload it too; The initial diagnosis should be that the lock cylinder is not installed correctly or the lock cylinder model is not suitable.
1. Unscrew down the two screws on and below the pull handle panel; >>>More
It's quite simple to change the lock cylinder of the anti-theft door, just a diagram.