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Repairing Bifold Doors The hardware that connects the bifold doors can deteriorate over time. Cleaning and lubricating the mechanism (including the lock) can help keep them functioning efficiently and smoothly. Oft, the problem 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 made up of a pair of panels that slide along track that is installed in the head and side jambs or floor. They pivot aro