Tools You'll Likely Need:
* Socket set (various sizes, including metric)
* Wrenches (various sizes, including metric)
* Screwdrivers (Phillips and flathead)
* Pliers
* Ratchet and extensions
* Possibly a torque wrench
* Wire cutters/strippers (if replacing wiring harness section)
* Shop towels or rags
* Penetrating oil (like PB Blaster)
Procedure (General Steps - Always Refer to your Repair Manual):
1. Disconnect the Battery: This is crucial to prevent electrical shorts and injury. Disconnect the negative (-) terminal first.
2. Access the Wiper Motor: This typically involves removing the cowl (the plastic panel under the windshield). This often requires removing wipers, nuts or bolts securing the cowl, and possibly other parts like the air intake. The repair manual will show you exactly what to remove.
3. Disconnect Electrical Connections: Carefully unplug the electrical connectors from the wiper motor. Take photos or make notes to ensure correct reassembly.
4. Disconnect Linkage: The wiper motor is connected to the wiper arms via a linkage. You'll need to carefully disconnect this linkage. This might involve removing nuts, bolts, or clips.
5. Remove the Wiper Motor: The motor itself is usually held in place by several bolts. Apply penetrating oil to any rusted or stuck bolts beforehand. Remove these bolts carefully.
6. Install the New Wiper Motor: Reverse the removal process to install the new motor. Ensure the linkage is properly connected.
7. Reconnect Electrical Connections: Carefully reconnect the electrical connectors, matching them to their appropriate locations as noted earlier.
8. Reassemble: Reinstall the cowl and any other components you removed.
9. Reconnect the Battery: Reconnect the positive (+) terminal after everything is reassembled.
10. Test the Wipers: Turn on your wipers to ensure they function correctly.
Important Considerations:
* Rust and Corrosion: 1991 Jeep Cherokees are prone to rust, especially in areas exposed to the elements. Penetrating oil is your friend. Be prepared for stubborn bolts.
* Repair Manual: A repair manual specific to your vehicle is invaluable. It will provide detailed diagrams and instructions tailored to your specific model.
* Wiring: If the wiring harness to the motor is damaged, you may need to repair or replace sections. Be very careful when working with the wiring.
* Safety First: Always wear safety glasses and gloves when working on your vehicle.
This is a simplified overview. The actual process can vary slightly depending on your specific Jeep Cherokee model. Do not attempt this repair without a repair manual specific to your vehicle. If you're uncomfortable performing this repair yourself, consider taking your Jeep to a qualified mechanic.
