MIWA U9.FF Repair of sliding door lock cylinder malfunction

"Sometimes it doesn't turn even when the key is inserted, so I would like an inspection."

It looks like an apartment built 21 years ago, but there was a rare entrance with a sliding door on the first floor.Is it something that has been renovated as barrier-free?It seems to be well designed.

MIWA U9.FF sliding door locks are used in toilet doors in hospitals and institutions. You can choose the shape of the thumbturn in various ways, but this time it was a standard thumbturn.

The key is for using a duplicate key made by MISTER MINIT, but it is deformed from the base. (The "brass" material is too soft. It is important to obtain a genuine manufacturer's key made of a highly durable "nickel silver" material. This will eliminate any trouble.)

It was necessary to disassemble the cylinder, so it was repaired as an emergency measure, but I suggested not to use it in the future.Unlike genuine products, the material is soft.

This time, I added the missing front screws, readjusted the loose screws, and reassembled the BH cylinder that was installed upside down.