The door spring requires a special tool the can be purchased for less than $20 from your local auto parts store. Without this tool you may get the spring out but you won't get it back in without damage to the door or yourself. The door pins remove easily, just remove the retaining clip and tap out the pin with a long punch and hammer. You can tap out the bushings also but I would suggest pressing them back in as they are very brittle and will break if you try to hammer the new ones back in. Have someone hold the door upright while it sits on a plastic milk crate, this way you won't have to disconnect the wires.
Your local auto parts store can sell you an inexpensive tool to remove and replace that door detente spring. Other hinge parts such as the pin and roller for the door detente and hinge pins and bushings are also available.
I had to remove my doors to do it. You will need access to the bodyshop tool that compresses the door spring on the hinge. That was the only hard part. You will also need to unhook all connections for power windows, locks too.Took me about 2 -3 hours the first time I did it. Mark
need to replace door hinge pin on 189 mitsibushi Triton tray back
installing a double action spring hing
You can replace the top door hinge with bottom hinges on the 1992 as long as the hinge is for the cab doors. The hinges for the tailgate would not work on the doors.
You need to disconnect the wiring to the electric window, locks, etc.,and the door has to be removed.The hardest part I think, is replacing the door spring that rides on the lower hinge; a body shop tool is needed for that.
http://www.bodyshopzone.com/archives/mechanical/door/hinge/pin_replace_1.html
jack the door up on the end of it and unbolt the hinge and replace with the new one.
you might need to replace the hinge pins.. or the complete hinge
You have to replace the whole hinge assembly, they don't make a hinge pin kit for the Thunderbird.
To replace a cabinet hinge, you must first remove the screws that attach to the door with either a screwdriver or a drill with screw bit. Next you want to remove the cabinet door. Once you have removed the door, remove the hinge from the cabinet. You can then attach a new hinge. A nice tip is to have a partner hold the door while you screw the hinge back in place.
To fix a car door that is sprung due to a bent or damaged hinge, the best thing to do is replace the hinge. If the hinge is welded and not bolted to the vehicle, the entire door will have to be replaced.