It's not uncommon for most cars to need their hinge pins replaced at some point during their life. Symptoms of worn hinge pins include a squeaky door that cannot be remedied with lubrication, a sagging car door, or a car door that will not open or close properly. If your car door is exhibiting any of these symptoms, don't ignore it--damage to the door or car's body could result. With the right tools, replacing car door hinge pins is not a difficult process, nor is it expensive.
Park the car on a flat surface; make sure the car is in "Park."
Engage the emergency break.
Drape the jack stand with an old towel or sheet.
Prop the car door up with the jack stand.
Place the punch against the bottom tip of the bottom hinge pin. (The bottom tip is facing down.)
Strike the punch with the hammer, using enough force to remove the bottom hinge pin from its location, but not so much so that the hinge or car door sustains damage.
Place the punch against the bottom tip of the top hinge pin. (The tip is facing up.)
Strike the punch with the hammer, using enough force to remove the top hinge pin from its location, but not so much so that the hinge or car door sustains damage.
Check to make sure the car door hinges are still aligned post-hinge pin removal to ensure the new hinge pins can be inserted.
Insert the new upper hinge pin into its hinge, with the hinge pin pointing up.
Insert the new lower hinge pin into its hinge, with the hinge pin pointing down.
Secure the upper hinge pin into its hinge with the punch.
Secure the lower hinge pin into its hinge with the punch.
Place new locking rings onto the grooves located at each of the new hinge pins' tips.
Hammer the locking rings so that they are locked onto the hinge pins.
Apply lubricant to the new hinge pins. Open and close the car door four times. Remove any excess lubricant with the old rag.
