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Repairing Bifold Doors The hardware that is used to hold the bifold doors together will wear out over time. Cleaning and lubricating all the mechanisms (including the lock) will keep them working efficiently and smoothly. Oft, the problem can be solved easily. This guide will help you understand how to repair your bifold doors when they become difficult to open or close. Cracked Pivot Pins A bifold door is comprised of two panels that move across a track that runs through the floor and head jambs. They pivot ar