3237KABA-ACE malfunction, cylinder check and repair

"It is difficult to lock the front door, so I would like to have it repaired."

It seems to be hard to turn even with the key in.

When I arrived and checked, it didn't move even 1mm. (Symptoms are severe)

It seemed completely stuck. I proceed with the usual washing method, but it does not improve even after 10 minutes.

The core cylinder is removed and disassembled for cleaning, but there is a limit to how much the KABA-ACE cylinder can be disassembled.

Check the situation again.

The key sticks smoothly, but the inner cylinder does not turn at all. We can only assume that some kind of foreign matter got into the gap between the inner cylinder and the outer cylinder, but we have not found an effective cleaning method.

From the back of the core cylinder, I spent time cleaning it and finally turned around. In addition, carefully wash and turn.

However, symptoms may recur. It was the first time I had such symptoms. It is completed by proposing an early cylinder replacement.