Here's a general procedure. Specific details may vary slightly depending on the exact van model (E-Series, etc.):
1. Safety First:
* Let the engine cool completely. This is crucial to avoid burns. Several hours after shutting off the engine is usually sufficient.
* Disconnect the negative battery terminal. This prevents accidental electrical shorts.
* Wear safety glasses and gloves.
2. Preparation:
* Gather your tools: You'll need a large socket (likely 1 1/16" or 1 1/8", but check your vehicle's specifications), a breaker bar or socket wrench with significant leverage, possibly a fan clutch wrench (a specialized tool), penetrating oil (like PB Blaster), rags, and a drain pan (in case of coolant leaks).
3. Accessing the Fan Clutch:
* Locate the fan clutch: It's the part connecting the fan to the water pump pulley. You might need to remove other components for better access. This could include the shroud around the fan (often held on by clips or screws). Consult a repair manual specific to your van's year and engine for precise instructions.
4. Removing the Fan Clutch:
* Apply penetrating oil: Spray penetrating oil around the fan clutch's connection to the water pump pulley. Let it soak for at least 15-20 minutes. This helps break any rust or corrosion.
* Use the appropriate socket: Carefully fit the socket onto the fan clutch nut. It's likely a left-hand thread (meaning it tightens counterclockwise, so it loosens clockwise). A fan clutch wrench is recommended as it often provides a better grip and prevents damage to the clutch.
* Apply force: Use a breaker bar or a long wrench extension for leverage. Apply steady, firm pressure to loosen the nut. Be prepared for significant resistance. If it's extremely stubborn, consider using an impact wrench (but be very careful not to damage the water pump pulley).
* Remove the nut and clutch: Once the nut is loose, carefully unscrew it completely. The fan clutch should then come off the water pump pulley.
5. Post-Removal:
* Inspect the water pump pulley: Check for any damage to the pulley. If it's damaged, it needs to be replaced along with the fan clutch.
* Clean the area: Clean any debris or oil from the water pump pulley.
Important Considerations:
* Repair Manual: A repair manual specific to your 1999 Ford turbo diesel van is invaluable. It provides detailed diagrams and torque specifications, essential for a successful repair.
* Professional Help: If you're uncomfortable working on your vehicle, consider taking it to a qualified mechanic. Improper removal can damage the water pump or other components.
* Replacement: When replacing the fan clutch, ensure you get the correct part for your specific vehicle.
Remember, this is a general guide. Always refer to a repair manual for precise instructions and torque specifications to avoid damaging your vehicle. Improper removal can lead to damage and costly repairs. Safety is paramount!
