LIXIL USHIN-SHOWA.QDJ-695 Inspection and repair due to locking failure

"Difficult to lock from inside or outside"

It was a shallow apartment property. There will be no distortion of the building itself.

When I checked it at the site, the door lever was rattling. Also the set screw was loose.

Moreover, a foreign object is caught in the strike. It seems that some trader has adjusted something, but the position is quite off.

The cause was that the position of the strike was off by about 2 to 3 mm. Poor installation when replacing the cylinder.

By the way, the cylinder I replaced is WEST916.LSP, but the cylinder collar protrudes about 2mm.

This is the situation we see when installed on insulating doors such as LIXIL (DT40). It's not a defect, but it's not beautiful for a WEST design.

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