I just remove our hinge pin this summer on our 1967
Airstream. It had what is called a roll pin that helped hold the hinge pin in place. You just need to find a punch that is small enough to tap the roll pin out. It should tap out from either side. The hinge pin was a different animal. It had one end that was larger than the other end. I do not remember which end was larger. I just remember that it came out easier one way than it did the other. I also used a lot of WD40 in the process.
Beth and/or David
67 Sovereign, double bed, rear bath-"Moby"
2005 Dodge Ram 2500 Hemi, Quad Cab-"Ahab"
"Vintage trailer, vintage owners"