340 with A/C lower pulley ?

I was wondering if the outer A/C drive pulley separates from the other two. I would like to take it off it looks very heavy with the rubber damper attached so I bet heavy. Or do I need a new pulley? I can remove and find but would nice to know ahead.
The engine is a `68 340 that replaced the 273 with factory air in my `67 Dart GT

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