The old door hinge pins have to be cut out with a torch on a 1989 F-150. Then, new hinge pins can be welded into place. This part might be available at an automotive salvage yard for a fraction of the cost of new hinges.
need to replace door hindge pins and bushing,how do we get door off safely.
To replace the driver's door hinge pins on a 2003 Chevy Express van, first, support the door to prevent it from falling. Remove the hinge cover and then use a hammer and punch to drive out the old hinge pins. Once the pins are removed, insert the new hinge pins and secure them in place. Finally, test the door's movement and reattach any removed components.
you might need to replace the hinge pins.. or the complete hinge
http://www.bodyshopzone.com/archives/mechanical/door/hinge/pin_replace_1.html
You replace The hinge pins
Replace the hinge pins and bushings.
To replace the door hinge pins on a 1987 Buick Regal, first, support the door to prevent it from falling. Remove the door panel if necessary for better access. Use a hammer and a punch to drive out the old hinge pins from the hinges, then insert the new pins and secure them in place. Finally, reattach the door panel if it was removed and test the door for proper alignment and movement.
To replace the door pins on a 1996 Grand Marquis, first, remove the door panel by unscrewing any fasteners and carefully prying it off. Use a hammer and a punch to drive out the old pins from the hinge, then insert the new door pins into the hinge. Reattach the door to the hinge, ensuring it aligns properly, and finally, resecure the door panel. Test the door's movement to ensure it opens and closes smoothly.
Have to remove the door, then remove pins and bushings
you take it to a shop
My advice based on experience is to replace the entire hinge assembly.
There are three main types of door hinge pins available in the market: removable hinge pins, fixed hinge pins, and loose pin hinges. Removable hinge pins can be easily taken out for door removal or maintenance. Fixed hinge pins are permanently attached to the hinge and cannot be removed. Loose pin hinges have a pin that can be easily removed for door installation or removal.