Malfunction inspection and repair of old model KABA security thumbturn equipped GOAL-LG

"Sometimes the thumbturn from indoors doesn't turn."

He said that the thumbturn seemed to get stuck and sometimes wouldn't turn. What type of thumbturn? There aren't many cases of thumbturn defects, but I hope it's not damaged.

Well, when we arrived at the scene and looked at the part in question, it turned out to be a KABA crime prevention thumbturn. And it's an old model. He said he didn't have the key, so the security feature was gone.

We will proceed to isolate the problem with the lock case or the thumbturn. The thumbturn is removed, but the front is engraved with "GOAL LG" and the inside is fixed with a skewer pin similar to "GOAL LX".

The KABA security thumbturn has a cosmetic ring and a resin cover, but they are running idle. I disassembled it and checked it, but there was no particular function and the fact that it was idling was not a defect in itself.

In the end, it was determined that the cylinder part was malfunctioning due to deterioration over time, and the problem was resolved by spray cleaning the cylinder, so I did not disassemble it any more than necessary.

There is no key for idle mode, so it is no longer the same as normal thumbturn.