How to Repair a Bifold Door Top Pivot The top pivot could become loose and scrape the floor. This can be fixed by loosening the screw that holds the top bracket. The pivot pin on the top is a metal screw that is fitted into a cap made of plastic https://bifoldingdoorrepair44432.ageeksblog.com/29927143/20-things-you-need-to-know-about-bi-fold-door-repairs