not all that difficult, actually its pretty simple. That being said it can be a pain getting that pin out if you don't have the proper tools, and I would also say this would fall under the category of it it ain't broke don't fix it.Sounds difficult lol
As a general guideline, if something is made of separate parts, assembled, it will be possible to disassemble it.
Of course, there may be an incorrect way to disassemble a thing, breaking it. (Don't ask me how I know that.)