Tools You'll Likely Need:
* Socket set (metric)
* Wrenches (metric)
* Screwdrivers (Phillips and flathead)
* Pliers
* Ratchet and extensions
* Possibly a puller (for stubborn linkage)
* Shop towels or rags
* New wiper motor
* Optional: Penetrating oil (like PB Blaster)
Procedure (General Steps):
1. Disconnect the Battery: This is crucial to prevent electrical shorts and shocks. Disconnect the negative (-) terminal first.
2. Access the Wiper Motor: The wiper motor is located under the cowl (the area where the windshield meets the dashboard). You'll need to remove parts to gain access. This often involves:
* Removing the wiper arms: Use a wiper arm puller (highly recommended to avoid damage) or carefully pry them off after marking their position on the wiper shaft. They usually have a nut underneath that needs to be loosened first.
* Removing the cowl panel: This usually involves removing screws and possibly clips securing it to the windshield frame and dashboard. Consult your repair manual for the exact location and type of fasteners. Be gentle to avoid breaking clips.
* Removing the linkage: The wiper linkage connects the motor to the wiper arms. Disconnect this carefully. Penetrating oil may help loosen any seized parts. You may need to carefully pry or use a puller. Take pictures or make notes of how the linkage is connected before disconnecting to aid in reassembly.
3. Disconnect the Electrical Connector: Unplug the electrical connector from the wiper motor. Again, take photos or notes if needed for reassembly.
4. Remove the Wiper Motor: Once the linkage and connector are disconnected, the motor itself should be relatively easy to remove. It's typically held in place by bolts or nuts. These may be difficult to access, so patience is key.
5. Install the New Wiper Motor: Follow the removal steps in reverse order to install the new motor. Make sure the linkage is correctly reconnected and the electrical connector is securely plugged in.
6. Reconnect Everything: Reinstall the cowl panel, wiper arms, and reconnect the battery.
7. Test the Wiper Motor: Turn on your wipers to ensure the new motor is working correctly. If not, double-check all connections.
Important Considerations:
* Rust and seized parts: On a 1989 Jeep, rust and seized fasteners are highly likely. Use penetrating oil liberally and allow it to soak for some time before attempting to remove anything. Applying heat (carefully!) can also help.
* Repair Manual: A repair manual specific to your Jeep Wrangler YJ is invaluable. It will provide precise details and diagrams, preventing damage and frustration.
* Patience: This isn't a quick job. Take your time and be methodical.
Disclaimer: This is general guidance. Improper repair can damage your vehicle. If you are uncomfortable performing this repair yourself, consult a qualified mechanic. They have the tools and expertise to do the job safely and efficiently.
