Entry door hinge problem - 06 Marquis

[Don White]

I noticed that the hinge pin in the hinge on the entry door has slipped down 3". 

Two questions:

1. What is supposed to keep the hinge pin in place in the hinge?

2. Any suggestions on how to slide the pin back up into the hinge and keep it in place?

Thanks

[Bryan Beamon]

Don, I take a counter sink used in setting nails below the surface and tap the hinge pin back in Place. I have done this when it appears to slip but never saw it 3 inches out of alignment. It has needed the realignment  about once a year. We live full time so the door gets lots of action