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How to Repair a Bifold Door Top Pivot A bifold closet door's top pivot may be loosened and scrape the floor. This can be fixed by loosening up the screw that holds the top bracket. The top pivot pin is a screw made of metal that is inserted into a cap made of plastic which has a rounded end and stays in the track above the front door. You'll also need a screwdriver, and possibly an assortment of pliers. Remove the bottom pin Bifold d