Tools You'll Need:
* Socket set: You'll need sockets to remove the hinge bolts (likely 13mm or 15mm, check your vehicle).
* Penetrating oil (like PB Blaster): This is crucial to loosen rusted or seized bolts. Apply generously and let it soak for at least 30 minutes, preferably longer.
* Hammer: For tapping the pin out.
* Punch (or drift): A metal rod slightly smaller than the hinge pin to drive the pin out. A punch with a slightly rounded end is best to prevent damage.
* Clamp or Vise Grips (optional): To hold the hinge securely while you tap out the pin.
* New hinge pin: Get the correct replacement pin.
* Jack stands (highly recommended): To safely support the car's weight.
* Gloves: To protect your hands.
* Safety glasses: To protect your eyes from flying debris.
Steps:
1. Safety First: Securely support the vehicle on jack stands. Never work under a car supported only by a jack.
2. Prepare the Hinge: Liberally apply penetrating oil to all the bolts holding the upper hinge to the door and the body. Let it soak for at least 30-60 minutes. Reapply if needed.
3. Remove Hinge Bolts: Carefully remove the bolts holding the upper hinge to the door and the body. These bolts are likely to be difficult to remove due to rust and corrosion, so take your time and use the appropriate sized socket and ratchet.
4. Remove the Hinge Pin: With the hinge bolts removed, you should be able to gently maneuver the hinge assembly slightly to provide better access to the pin. Use your punch and hammer to carefully tap the hinge pin *out* from the bottom. Work slowly and carefully; forcing it could damage the hinge. A small amount of tapping may be all that's needed, and then you may be able to wiggle it out by hand.
5. Install the New Pin: Insert the new hinge pin from the bottom (same direction as you removed the old one). You may need to tap it gently with the hammer to get it started.
6. Reassemble: Carefully align the hinge and reinstall the bolts that secure the hinge to the door and the body. Tighten them securely, but avoid over-tightening.
7. Check the Door: Close and open the door several times to make sure it operates smoothly and the hinge pin is secure.
Important Considerations:
* Rust: Rust is your biggest enemy here. The more time you allow the penetrating oil to work, the easier this job will be. You might need to repeat the penetrating oil application several times over a few hours.
* Damage: Be very careful not to damage the hinge or surrounding bodywork. Go slow and steady.
* Alternatives: If you're struggling to remove the pin, consider taking the door off completely. This provides much better access but is a more involved process.
This job is easier with a helper. If you're uncomfortable doing this yourself, it's best to take it to a mechanic. Replacing a hinge pin is relatively inexpensive, but the labor costs could be more than the parts.
