door guard repair

"The door guard suddenly stopped working this morning."

It seemed to work until yesterday, but suddenly this morning it stopped working.

Most of the defects are caused by click balls, but what about this time?

When you check the operation, it certainly solidifies and does not move. You can also see the dust stains.

I was able to improve it by proceeding with the work with normal cleaning and lubricating spray. Something hard grain must have been caught in the click ball.

No need to replace it this time. It seems that it can still be used in active service.