A bi-fold door is supported and operated by one top pivot and another top guide pivot set into a track, with a bottom pivot set in a bracket. All parts are already present when you are reinstalling the door. The only task left to tackle is placing the door's pivots into the the top track and the bottom bracket. The door panel should sit at the proper height and have the correct clearance, based on the manufacturer's directions, and it should sit plumb in the opening. Once reinstalled, adjustments ensure the door sits properly and opens and closes smoothly.
Instructions
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1
Hold the door upright.
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2
Push the top pivot into the pivot hole.
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3
Lift the door. Seat the bottom pivot in the jamb bracket.
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4
Hold the edge of the door. Depress the guide pivot. Position the pivot in the track. Release the door.
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5
Lift the door out of the jamb bracket to adjust the height. Twist the pivot to raise or lower the door. Set the pivot in the bracket.
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6
Loosen the screw in the top bracket to make the door plumb. Move the bracket on the track until the door is plumb. Tighten the screw.