Tools You'll Need:
* Flathead screwdriver (medium sized): This will be your primary tool for releasing the wiper arms.
* Penetrating oil (optional): If the arms are particularly stubborn due to rust or corrosion, applying penetrating oil beforehand can help. Let it sit for 10-15 minutes.
* New wiper arms: Make sure you buy the correct ones for your 1998 S-10.
* Shop towels or rags: To clean up any debris or oil.
Steps:
1. Lift the wiper arms: Lift each wiper arm away from the windshield so it's pointing straight up. This gives you better access to the nut.
2. Locate the nut: At the base of the wiper arm, where it attaches to the wiper arm spindle, you'll see a nut. It's often concealed under a small plastic cap. You may need to pry this cap off gently with the flathead screwdriver.
3. Apply penetrating oil (optional): If the nut is stuck, apply penetrating oil around the nut and allow it to soak in.
4. Remove the nut: Using the flathead screwdriver, carefully pry up on the nut while holding the wiper arm. This is the crucial step that requires force and careful technique. You're essentially using the screwdriver to compress the nut enough to release it. Do not pry directly on the arm itself as it might damage it. Work your way around the nut to loosen it. Sometimes the nut is reverse-threaded, so try turning both ways if it doesn't immediately loosen.
5. Remove the wiper arm: Once the nut is loose and removed, the wiper arm should come off relatively easily. You may need to wiggle it slightly.
6. Repeat steps 2-5: for the other wiper arm.
7. Install the new wiper arms: Reverse the process. Position the new wiper arm onto the wiper arm spindle. Install the nut and tighten it securely. Make sure it's snug but don't overtighten.
8. Replace the plastic cap (if applicable).
9. Test the wipers: Turn on your wipers to ensure they operate correctly.
Important Notes:
* Force and Precision: Use firm but controlled pressure when loosening the nut. Too much force can damage the wiper arm spindle or the wiper arm itself.
* Reverse Threads: Some wiper arm nuts are reverse threaded. If turning one way doesn't work, try the other.
* Rust and Corrosion: If the wiper arms are extremely difficult to remove, it's a good idea to soak them with penetrating oil for a longer time, or even consider seeking professional help. Severe rust can damage the spindle.
* Wiper Blades: While you're at it, this is also a good time to replace your wiper blades if needed.
If you're uncomfortable performing this task yourself, it's always best to take your vehicle to a qualified mechanic. This is a relatively simple job, but improper technique can lead to damage.
