How to install sliding mirror door rollers

A quick learner from Florida says:

I need instructions on how to re-hang a sliding mirror door with double roller upper guides. Door was forced open and dislodged the door. The door in question is intact and the rollers seem to be in good condition. I just need to know how to separate the top double rollers to put them on as upper guides. I believe the two double rollers are to add tension and stability. Can not lift the door because the top rollers will not slide over upper rail.

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Lauren from SWISCO responded:

Hello, thank you for posting,

To further review, are you able to provide pictures of the original roller assemblies and track? Seeing the original hardware will help us determine the style you have for installation tips. Thank you! 

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