The best way to do it is to purchase a Hinge Pin Puller from Macs, Bob Drake, Midwest Early V-8s, Dennis Carpenter etc. It is a square C shaped tool with a coarse threaded bolt at the bottom and a hole at the top to let the Pin head to pass through. The threaded bolt also has a pilot hole in it to allow an extension pin to be added to force the pin all the way out if it remains stubborn to the last.
I have been successful in using a quality punch and hammer but there are a couple of tricks that help. First, apply a good penetrating oil/nut buster every day for 3 or 4 days then use a 5-8 pound backing block to the top of the hinge, clear of the pin (better if it has a pilot hole to receive the pin as it moves up. You can get the pin moving with a good solid blow with a 3-4 # hammer and then switch to the punch. If it does not move with a good solid blow with the hammer and the block at the top, stop and apply some heat to the metal just below the head and the part of the hinge that is fixed to the door pillar. Do not heat at the bottom and do not over heat. Then hit it again. If it still does not move, better get the tool!!
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