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Repairing Bifold Doors Bifold doors are an excellent addition to your home but with time, the hardware that holds them together will become damaged. Cleaning and lubricating the mechanisms (including the locks) can keep them running smoothly and efficiently. Often, the problem is a small issue that can be fixed easily. This guide will show how to fix your bifold door when it becomes difficult to open or close. Cracked Pivot Pins A bifold door is made up of a pair of panels that slide down a track th