I want to pull off my doors. I can get the top pin but the bottom is too close to fender/running board to get a swing or punch on it. I soaked them in penetrating oil but can get them to budge, any ideas how to get them out?

No trick for me just used a punch and a hammer.

I needed an air hammer on the pins on my 47+penetrating oil+heat........ they were no fun, but they finally came out. Lon

Is it possible to grind the top mushroom head off and drive it down rather than up?

Second on the air hammer.

the pins must be removed toward the top because of the knurled step at the top is usually around 1/16" or so larger than the main pin itself. this is to keep the pin in position in the hinge. if removed by trying to pound it through the bottom, the usual outcome is a gakked up hinge. "if" , for some reason, you were successful at getting it out this way, you would probably have to ream the hinge for an oversize pin[that is if you could find one] so the door would work correctly upon reinstallation. you may even have to make a pin if you couldn't find an oversize one. millions of years ago, i saw a tool similar to the home made one ron shows above that had a screw positioned on the bottom bar and a coresponding hole in the top bar that allowed the top of the pin to pass through as the bottom screw was tightened. the screw was smaller than the pin shaft, and was made from something hard so as to not smash, or swell as it passed through the hinge pin bore. the body of the tool was also formed to fit the hinge so as to properly locate the jack screw. i don't recall the make or model this was for, nor do i know if heat was also required to use this. i would hazzard a guess that when relatively new, the pins would press out without not too much difficulty. but 75 years later, most hinge pins need some extra persuasion. in your case, you may just be ahead to yank the fenders and running boards, even though that task may not be what you want to do. i hope something easier can be devised though.......

Are you worried about reusing the pins? If not...drill a hole in the top, tap it..and use a slide hammer.

unbolt the running board and remove----reassembly required...

Make sure you have new pins IN HAND before destroying the old ones.
Some stuff is easy to find, but if you tear up something before checking, it's bound to be the impossible to find part!

The whole door assembly comes off hinges and all with the 8 bolts that hold the hinges to the cab. Then you will have plenty of room to bang away.

Dave if you are able to get the top pin out, just unbolt the bottom hinge and slide the hinge out of the door jamb "pocket". If the glass is still installed, have a friend help. The fully dressed door is a handful for one person.