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Repairing Bifold Doors The hardware that connects the bifold doors will deteriorate over time. Cleaning and lubricating the mechanism (including the locks) can keep them running smoothly and efficiently. Of course, the issue can be solved easily. This guide will show you how to fix your bifold doors if they become difficult to open or close. Cracked Pivot Pins A bifold door is a pair of panels that slide along track that is located in the head side jambs, or floor. They pivot around p