WEST916.MIWA-LA Cylinder breaking and unlocking and set replacement due to lock case abnormality

"It won't open from the inside or the outside. The child is trapped."

It was a request call late in the evening. The client says she has the key, but the door won't open.

Even if an elementary school child turned the thumbturn from inside, it would not open.

I turn the cylinder with the key, but it spins freely. It seems that there is something wrong with the rotary cam mechanism.

I force the deadbolt to operate, but it does not improve easily. I check the bolt through the gap, but it is in a state where it does not move even 1 mm. (this seems serious)

Therefore, it was decided to move to the unlocking work. It will be expensive to replace the main body lock case and cylinder, but you agreed.

Cylinder breaking uses a special hole saw this time. The cylinder is hole-saw-proof, but if it starts to spin, you can remove the washer and there will be no problem.

And don't forget your safety goggles.

There is only a dedicated hole saw, and it will be sharpened comfortably. The core cylinder was completely removed in about 5 minutes. The rotary cam has completely appeared.

Forcibly operate the deadbolt with a pick through the gap in the cam part. It begins to move slowly, and finally pushes in from the head of the bolt.

I also checked the thumbturn position with the camera, but when I unlocked it and checked it, it was also spinning.

When I disassembled the main body lock case, I found that some arm parts of the rotary cam mechanism were damaged. The apartment was built 33 years ago, so it is a defect due to metal fatigue.

Even if the cylinder is replaced, the lock case is not replaced. As far as I disassembled it, it is a main body lock case that has been working hard for over 30 years.

After that, I replaced it with a new main body LA lock case, installed the LA type of KABA ACE, and completed the work.

On the way, we stopped work for about 30 minutes to get the landlord's consent, but the whole process was about 100 minutes. Sorry to keep you waiting in the cold.