TOSTEM H248.LIX Disc tumbler type cylinder cleaning and unlocking

"I want you to unlock the front door because the key doesn't stick."

After returning home, it seems that the key suddenly stopped turning.I thought it would be easy to complete by cleaning the cylinder, but I had a little trouble with H248.

The inside of the cylinder was quite dirty and blackened.I will proceed with the work with a special cleaning spray, but it seems to be quite persistent dirt.

It seemed that the innermost tumbler was stuck.For this reason, the key was not stuck all the way and caused a defect.

For about 5 minutes, the cleaning oil was fully infiltrated and the tumbler finally started to move.

Upon closer hearing, it seemed that I had been using CRC556 (which I shouldn't do).

It is said that you will see the situation with this without disassembling and cleaning.It will recur, so we recommend that you replace it as soon as possible.