Remove/replace garage door bottom roller?
 

Hi all.

I want to remove. for cleaning or replacing, the bottom roller on my
garage door. There is no problem with removing the brackets on the other
rollers, but on a torsion-spring door the bracket for the bottom roller
is hooked to that cable with a grillion pounds of tension in it.

Does anybody know what the trick is?

TIA

--

Dick Yuknavech, amateur DIY guy.