Assuming you meant the 4.0L, removing the fan bolt from the water pump is tricky because it's often rusted or seized. Here's a breakdown of how to approach it:
1. Preparation is Key:
* Cool Engine: Let the engine cool completely before attempting this. A hot engine increases the risk of burns and makes the bolt harder to remove.
* Proper Tools: You'll need a socket wrench (likely a deep well socket) that fits the bolt, a breaker bar for leverage (a long extension will work too), and possibly a penetrating oil like PB Blaster.
* Safety First: Wear safety glasses to protect your eyes from flying debris. Use gloves to protect your hands.
2. Loosen the Bolt:
* Penetrating Oil: Spray penetrating oil liberally onto the fan bolt. Let it soak for at least 30 minutes (longer is better, even overnight). This helps break down rust and corrosion. Reapply as needed.
* Initial Attempt: Try to loosen the bolt with your socket wrench and breaker bar. Use steady, firm pressure, avoiding sudden jerky movements which can strip the bolt head. Go slowly and carefully. If it doesn't budge, move to step 3.
3. More Aggressive Techniques (Use Caution):
* Impact Wrench (Air or Electric): An impact wrench can provide significantly more torque. Start with a low setting and gradually increase the power if necessary. *Be extremely careful not to strip the bolt*.
* Heat: Applying heat to the bolt head with a propane torch can help expand the metal and break the bond with corrosion. *Be extremely careful not to overheat the surrounding components, especially the water pump and hoses*. Heat only the bolt head itself.
* Vice Grips: As a last resort, if the bolt head is significantly damaged, you may be able to grip it with vice grips and try to turn it. This is a high-risk method because you could damage the bolt further.
4. Removal:
Once the bolt is loosened, carefully unscrew it by hand. If it's still tight, use your wrench to complete the removal.
5. If the Bolt Breaks:
If the bolt breaks off, you'll have a much bigger problem. You'll likely need to drill it out, which requires skill and specialized tools. In this situation, it's best to consult a mechanic.
Important Note: The fan and shroud assembly in a 1994 Ranger might not directly attach to the water pump with a single large bolt. It's more likely that the fan is attached to the viscous fan clutch which is, in turn, attached to the water pump. If the bolt you're referring to is on the clutch itself, the process remains the same, but replacing the entire clutch assembly may be easier in the long run if it's stubborn.
If you're unsure about any step, it's always best to seek the assistance of a qualified mechanic. They have the right tools and experience to handle this safely and efficiently.
