WEST916.LAMA Cylinder operation defect cleaning repair with long seat

"Sometimes the key won't turn."

They reported that there were times when the key would not turn. Since a 5mm thick long seat is used on both sides, the standard 40mm door thickness DT becomes 50mm, and the cylinder and thumbturn cannot be installed with the standard product. It gets complicated when it comes to replacing things.

This time, the friction between the cylinder side, front, and deadbolt was malfunctioning, so it was resolved by disassembling each part and doing regular cleaning work.