I have a Harbor Breeze 52" ceiling fan, i bought down w/ taking the blades off, because they're in a manner that don't give you access to them, the fan has a dome light , but I can't even take the dome off, how do I do that, the model is #SER52BP5LKRC 52" CEILING FAN, D5201, Please help I can take the blades off/nor the Light Dome

Hollow threaded rods are typically used to assemble lights and fans.

I;m assuming your not talking about the cover against the ceiling.

Searching the model number shows nothing. How about posting a pic so we can see what it is you are dealing with.

90% of the time on newer fans you have to take the light kit completely off to access the blade bracket screws.