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Repairing Bifold Doors The hardware that holds the bifold doors together will deteriorate over time. Cleaning and lubricating all the mechanisms (including the lock) will keep them running smoothly and efficiently. Often, the problem is a small issue that can be easily fixed. This guide will help you understand how to fix your bifold doors when they become difficult to open or close. Cracked Pivot Pins A bifold door consists of two panels that slide along a track in the floor and head jambs. They pivo