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Repairing Bifold Doors The hardware that connects the bifold doors will wear out over time. Cleaning and lubricating the mechanism (including the locks) will ensure that they run smoothly and efficiently. Oft, the problem can be easily solved. This guide will show how to fix your bifold door if it becomes difficult to open or shut. Cracked Pivot Pins A bifold door is a pair of panels that slide down tracks that are that is installed in the head and side jambs or floor. They