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Repairing Bifold Doors The hardware that connects the bifold doors will deteriorate over time. Cleaning and lubricating mechanisms (including the locks) will ensure that they run smoothly and efficiently. The most common issue is something small that can be easily fixed. This guide will teach you how to fix your bifold doors when they become difficult to open or close. Cracked Pivot Pins A bifold door is made up of two panels that slide along a track within the floor and head jambs. They pivot on pins that are