Parts for Shower door guide and roller

A quick learner from Downingtown says:
I have a shower door that recently got stuck while opening and came off the track. I think it may need changing of the rollers and guide parts. I am not sure of the parts hence attaching the pics. Please help me with the parts and steps to replace them.

Gaurav P
User submitted photos of shower door hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
It's hard to be sure, but looking at your photos you might have to remove the bottom stile off the shower door to replace the 10-216. Make sure to use plenty of lubricant on the screw to loosen up the corrosion.
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