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How to Repair a Bifold Door Top Pivot A bifold closet door's top pivot may become loose and scrape along the floor. This can be fixed by loosening up the screw that holds the top bracket. The pivot pin on the top is a screw made of metal that fits into a plastic cap that has an lipped end that is in the track just above the door. You'll require a screwdriver and perhaps pliers. Remove the bottom pin The bifold doors can be an excellent option to make space in your closet, but over time