Easiest way to replace a door hinge pin?

[Mister-B]

The top passenger hinge pin broke. My door was starting to sag, and then it gave away all together, and was only held by the bottom hinge.

So, I found a good replacement hinge at the yard today. I was thinking if I just replaced the pin that the replacement hinge came wit, it might be easier than the whole hinge.

Any tips for how to do this, or do I need to just replace the entire hinge? The truck I got it from was missing the front fender. I really hope I don't have to remove the fender to replace the hinge...
Posted via Mobile Device