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First get new hinge pin, retainer, and set of bushings. Dorman part #38419 for an S-10 front hinge pin. Any good parts store should have it or go online to Autoparts Warehouse. Just type in # and it comes up. One kit is under $20 dollars. By 2 kits for top and bottom hinge on one door.
Use a floor jack and wood 2x4 to support the bottom of the door. My spring was missing so I'll skip that part of it, however I know that there is a tool available from harbor frieght or at Home Depot. You can also use a small prybar to remove it. I used some left over 3/4" foam pipe insulation and placed it on the forward edge of my driver's side door and the rear edge of my front fender so as to not mar the door edge and fender finish. I also used some short pieces of 1/2" pine to hold door away from body just in case. I did this working by myself.
After getting the spring out pry off the upper retainer on the upper hinge pin. Using a small diameter punch, tap the upper pin downward untill it falls out. Do the same for the lower hinge only you tap it up to come out. Once both hinge pins are out the door is now free. I was able to move the door out and over just enough to knock out the old worm bushings and place the new brass bushings in place. Take the smaller outer diameter bushing and working on the top hinge by hand to set it, now gently tap the brass bushing down into the body side top hinge hole until fully set. Do the same for the lower bushing and lower pin hole only that larger diameter bushing goes in from the bottom of the hinge. Repeat the process if you are changing the lower pin, only both those bushings go in from the top of the hinge.
Gently moving the door back in place, re-alining the door side of the hinges so you can see through the hinge and bushings holes. Place the pins in the holes, top pin goes in from the bottom and lower hinge goes in from the top. Gently tap or twist and turn pins into place. The pins are thicker at their heads so now you will have to give both pins a good whack with a hammer until they are fully seated. Re-install the spring (if you still have your's) and lube both pins with white grease.
It took me about an hour taking my time, to do my upper hinge pin. Mainly because I did't want to remove the door and I was working by myself. My upper hinge had the elongated hole from ware, but it wasn't too bad. Also keep in mind that I only moved the door out from the body side of the hinge about 3/8" or a 1/2" which was just enough space to sneak in the new bushings.
Take your time and be very gentle with the door movement. Also be carefull when putting in the bushings as those are soft brass.
Good luck, hope this helps
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