1. Preparation is Key:
* Park Safely: Park on a level surface, engage the parking brake, and turn off the ignition.
* Gather Tools: You'll likely need a flat-head screwdriver (possibly a small one), pliers (possibly needle-nose), and potentially a wiper arm puller tool (available at auto parts stores). Gloves are recommended to protect your hands.
* Consult a Repair Manual: A service manual specific to your 1984 Dodge van model will provide the most accurate and safest instructions. These manuals often have diagrams.
2. The Removal Process (General Steps):
* Lift the Wiper Arm: Lift the wiper arm to a vertical position. This may require some effort.
* Locate the Nut or Clamp: Carefully inspect the base of the wiper arm where it connects to the wiper spindle. You might find:
* A Nut: This is the most common. You might need to use a wrench or pliers to loosen and remove it. Be mindful not to scratch the paint around the wiper base.
* A Clamp: Some wiper arms are held by a clamp that needs to be loosened and released. A flat-head screwdriver may be needed to pry open the clamp.
* Use a Wiper Arm Puller (Recommended): If you can't remove the arm by simply unscrewing or unclamping, a wiper arm puller tool is your best bet. These tools are designed to grip the arm securely without marring the spindle. Follow the instructions that come with the puller. This is often the best way to avoid breaking the wiper arm.
* Remove the Arm: Once the nut or clamp is removed, gently wiggle the wiper arm back and forth to separate it from the spindle. Some resistance is normal, but excessive force could indicate something is stuck or improperly removed.
3. Important Considerations:
* Rust: On a 1984 vehicle, rust might be a significant factor. Penetrating oil (like PB Blaster) applied several hours before attempting removal can help loosen rusted parts.
* Wiper Spindle Damage: Be extremely cautious not to damage the wiper spindle itself during removal. This is a relatively fragile part.
* Spring Tension: Wiper arms can have strong spring tension; be prepared for it to spring back suddenly once unattached.
* Position: Make note of the arm's position before removal if you plan to reuse them – this is essential for reinstallation.
4. Reinstallation:
Reinstallation is essentially the reverse process of removal. Make sure the wiper arm is properly seated on the spindle and that the nut or clamp is tightened securely.
Without knowing the *precise* model of your 1984 Dodge van, these instructions are general guidance. Consult a repair manual or a qualified mechanic if you're unsure about any step. Damaging the wiper spindle or wiper arms will be more costly to repair than taking the time to do this correctly.