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Repairing Bifold Doors Bifold doors are an attractive feature for your home, but as time passes, the hardware that holds them together will become damaged. Cleaning and lubricating the mechanism (including the lock) will keep them running efficiently and smoothly. Often, the problem is minor and is easily fixed. This guide will help you to fix your bifold door if it becomes difficult to open or close. Cracked Pivot Pins A bifold door consists of two panels that move across a track that runs through t