Unlocking the kitchen door and MIWAthumb-latch lock THM-HL Replacing the entrance cylinder

"Lost key, Unlocking the entrance door"

It was a request from an elderly person who returned from the hospital.He couldn't find a locksmith, so he asked his neighbor.

There was a door scope on the front door.It was a wooden door that is common in single-family homes, but in the end it was impossible to unlock it from the door scope.

The reason was that the door was a solid wooden door, and it was a heavy luxury door.Moreover, the thickness of the door where the door scope was installed was more than 40 mm.

In other words, it is different from the heat-insulating galvanized steel doors in apartment buildings.There are no cavities, so no tools can fit in.I can't turn the corner.I can't go through.The installation is neat and there are no gaps in the doors. (If you want to be able to turn a corner as an additional work, you need to hollow out)

Plan B

I picked and unlocked the kitchen door and entered the room.

I lost the key and it seems that there is no speckey, so I decided to replace the cylinder. The key to the kitchen door was enough spare keys, so I had to replace only the cylinder of the front door.

The MIWAthumb-latch lock was marked THM-HL, so the protruding cylinder collar is an integral type.Therefore, we responded as a replacement for the core of U9.This is safe, isn't it?