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Repairing Bifold Doors Bifold doors can be an excellent addition to your home but over time the hardware that holds them together can get worse. Cleaning and lubricating the mechanisms (including the lock) will keep them working smoothly and efficiently. Most of the time, the issue is minor and is easily fixed. This guide will show how to fix your bifold door when it becomes difficult to open or close. Cracked Pivot Pins A bifold door consists of two panels that slide across a track that runs through th