bifold door hardware help

I see you have the old series Slimfold bi-fold doors. Their new style parts will work in your door. You will need to use one of the 21-001 bottom threaded pivot pin and three spring loaded pins one for the top pivot pin and the two top and bottom guide pins. I will also place a video below showing you the installation process. I also placed a list on this page of other bi fold hardware replacement parts you may need. Once you replaced the parts, place the bottom of the door over the track, lining up the bottom threaded pin into the pivot bracket and guide pin in the bottom track. From there, swing the door up up to the top track and snap in the two top guide pins. One in the top bracket and the other in the track. Adjust the bottom threaded pin so the door is align and operates smoothly. This should help. Make sure to get back in touch with us and let us know how you made out. 

You will need one of the 21-001 bottom threaded pivot pin and three of the 21-007 spring loaded pins one for the top pivot pin and two for the top and bottom guide pins.