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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 mechanisms (including the locks) will ensure that they run smoothly and efficiently. Most of the time, the issue can be solved easily. This guide will show you how to repair your bifold doors when they become difficult to open or close. Cracked Pivot Pins A bifold door consists of two panels that move along a track in the floor and head jambs. They pivot using