1. Preparation:
* Gather Tools: You'll need a socket set (metric), various wrenches (including potentially a breaker bar), a punch (or drift punch), a hammer, penetrating oil (like PB Blaster), a grease gun, new hinge pin bushings (get the correct size – check a parts store or online retailer with your VIN), and possibly a vise (optional, but helpful). Safety glasses and gloves are essential.
* Vehicle Preparation: Disconnect the negative battery terminal. This prevents accidental shorts. Park the vehicle on a level surface and engage the parking brake.
* Door Panel Removal: Carefully remove the interior door panel. This involves removing screws, detaching clips, and disconnecting the door handle mechanism and window switch. Consult a repair manual for your specific year and model for detailed instructions.
2. Hinge Pin Removal:
* Penetrating Oil: Generously apply penetrating oil to the hinge pin(s) that need bushing replacement. Let it soak for at least 30 minutes (or longer if necessary). This helps break loose any corrosion or rust.
* Punching Out the Pin: Use a punch (the right size is crucial; too small and it might slip, too big and you risk damaging the hinge) and a hammer to gently tap out the hinge pin. You might need to work it from both sides, alternating between taps. A vise can be helpful to secure the door while you do this. If the pin is particularly stubborn, a slightly larger punch might be needed. Use caution not to damage the hinge itself.
* Inspect the Pin: Examine the old hinge pin. If it’s severely bent, damaged, or corroded, replace it as well.
3. Bushing Replacement:
* Old Bushing Removal: Once the pin is out, carefully remove the old bushings. These often just push out once the pin is gone. If they're stuck, use a small punch or pick to help coax them out.
* Installation of New Bushings: Carefully install the new bushings into their respective locations on the hinge. Make sure they are seated properly.
* Reinstallation of the Pin: Lubricate the new hinge pin with grease. Gently tap the pin back into place, using the punch and hammer. Work slowly and evenly to prevent damage.
4. Reassembly:
* Reattach the Door Panel: Once the pin is securely in place, reattach the door panel, ensuring all clips and screws are correctly secured.
* Test the Door: Open and close the door several times to ensure smooth operation.
* Lubricate Hinges: Apply grease to all the hinge pins and bushings.
Important Considerations:
* Repair Manual: A repair manual specific to your 1997 Jeep Grand Cherokee is highly recommended. This will provide detailed diagrams and instructions for removing the door panel and accessing the hinge pins.
* Patience: This is not a quick job, and patience is key to avoid damaging the door or hinges.
* Professional Help: If you're uncomfortable performing this repair yourself, consider taking your Jeep to a qualified mechanic. Damaged hinges can be costly to repair.
This process provides a general overview. Always consult a repair manual for your specific vehicle for the most accurate and detailed instructions. Improperly installed bushings can lead to door sagging or binding.
