Tools You'll Need:
* Wiper arm puller: This is the *safest* way to remove the arm. It's a specialized tool that grips the wiper arm and provides leverage to break the connection. Auto parts stores sell these for a few dollars.
* Penetrating oil (like PB Blaster): Apply this to the wiper arm nut or pivot point to loosen any rust or corrosion. Let it sit for at least 15-20 minutes.
* Wrench (likely a small socket or open-end wrench): This is only needed *if* your wiper arm has a nut that needs to be loosened before pulling. This is less common on older cars, but some models might have one.
* Protective gloves: To protect your hands.
* Shop rags or towels: To clean up any spilled penetrating oil or protect the car's paint.
Procedure:
1. Disconnect the battery: This is a crucial safety step to prevent accidental shorts.
2. Apply penetrating oil: Spray penetrating oil liberally around the base of the wiper arm where it attaches to the spindle. Let it soak in for at least 15-20 minutes.
3. Locate the nut (if present): Some wiper arms have a nut securing them to the spindle. If yours does, carefully use the correct wrench to loosen it (but don't remove it completely yet).
4. Use the wiper arm puller: This is the safest method. Follow the instructions that come with your specific puller. Generally, you'll clamp the puller onto the wiper arm, then carefully tighten the puller's adjusting screw until the arm releases. The arm might require a bit of force, but avoid using excessive force or prying with other tools.
5. If no wiper arm puller: (Not recommended, much higher risk of damage/injury) As a *last resort* and only if you're extremely careful and understand the risks, you *might* be able to carefully pry the wiper arm off with a flat-head screwdriver. Place a rag between the screwdriver and the car's paint to prevent scratching. Again, this is risky and could damage the wiper arm or spindle.
6. Remove the wiper arm: Once the arm is loose, carefully remove it from the spindle.
Reinstallation:
The reinstallation process is generally the reverse of removal. Make sure the wiper arm is seated correctly and firmly on the spindle before tightening any nuts.
Important Considerations:
* Spindle damage: If the wiper arm is particularly stubborn, you risk damaging the spindle. If you encounter significant resistance, stop and reconsider your approach. It may be better to consult a mechanic.
* Year-specific differences: While the general process is similar across vehicles, there might be slight variations depending on the specific model year and trim level of your 1969 Chevy Nova. Consulting a repair manual specific to your car is always a good idea.
If you're unsure about any part of this process, it's always best to consult a professional mechanic. Improper removal can easily damage the wiper mechanism.
