One, How to remove the glass door lock core
To remove the lock cylinder of the glass door lock, the first step is to disassemble the installed glass door lock.
Glass door lock removal method: First, loosen and remove the screws for the fixed lock mechanism on the panel. Then, remove the lock mechanism. Next, loosen the remaining 2 screws on the panel, and the panel can be removed. Finally, loosen the screws on the lock body on the side of the door, and the removal is complete.

Glass door lock core removal method: After removing the lock body, use a Phillips head screwdriver to loosen the screws on the lock, and then you can remove the lock core.
If you need to replace the new lock cylinder, simply place the new lock cylinder in the old position and then place the panel in its original position. Finally, tighten the screws with a screwdriver.
Two. What should I do if the glass door lock cannot be opened?
If the lock mechanism cannot be removed, the entire lock should be disassembled. The lock mechanism often gets stuck or welded to the shackle. Therefore, the entire lock needs to be disassembled. When disassembling, first remove the screws on the door handle to access the shackle screws. If you do not want to remove the lock, you can use a grinder to remove the weld, which will allow you to remove the lock mechanism.