How to Repair a Bifold Door Top Pivot The top pivot can become loose and scrape along the floor. You can correct this by loosening the set screw for the top bracket. The pivot pin on the top is a screw made from metal that fits into a plastic cap https://bifolddoorrepair55756.blognody.com/30697483/bi-fold-door-repairs-explained-in-less-than-140-characters