Here's a general outline. Specifics may vary slightly depending on your exact Expedition model and any accessories. Always consult your vehicle's repair manual for the most accurate instructions and diagrams.
Tools You'll Need:
* New Serpentine Belt: Make sure you get the correct size and type for your 2000 Ford Expedition 4.6L. The part number is crucial.
* Socket Set (metric): Various sizes, likely including 10mm, 13mm, and possibly others.
* Wrench Set (metric): May be needed for some tensioner bolts.
* Ratchet and Extensions: To reach tight spots.
* Jack and Jack Stands (or ramps): To safely lift the vehicle.
* Wheel Chocks: For safety.
* Gloves: To protect your hands.
* Shop Towels or Rags: To clean up any spilled fluids.
* Pliers or Channel-Lock Pliers (optional): May help with maneuvering the belt.
* Pry Bar (optional): Might help with stubborn tensioners.
* Vehicle Repair Manual: Crucial for specific instructions and diagrams.
Steps (General):
1. Safety First: Park on a level surface, engage the parking brake, and use wheel chocks. Raise the vehicle using a jack and secure it on jack stands. Never work under a vehicle supported only by a jack.
2. Locate the Serpentine Belt: Identify the serpentine belt routing around the various pulleys (crankshaft, alternator, power steering pump, water pump, A/C compressor). Take pictures before removing the belt – this is essential! This will help you remember the routing when installing the new one.
3. Locate the Tensioner: The serpentine belt tensioner is usually a pulley with a mechanism to relieve tension on the belt. It may be spring-loaded or have a bolt that needs to be loosened or turned.
4. Release Tension: Use the appropriate wrench or socket to loosen the tensioner bolt. This will allow you to release the tension on the belt. Be careful – the tensioner is under spring pressure and can spring back suddenly.
5. Remove the Old Belt: Once the tension is released, carefully slip the old serpentine belt off the pulleys.
6. Install the New Belt: Carefully guide the new serpentine belt onto all the pulleys, following the routing you photographed or documented earlier. Ensure it's seated correctly on all pulleys.
7. Re-tighten the Tensioner: Once the belt is on all pulleys, slowly tighten the tensioner bolt back to its original position. This will put the correct tension on the new belt.
8. Check for Proper Tension: Try to twist the belt by hand between pulleys. It shouldn't be too loose or too tight. Consult your repair manual for proper tension specifications.
9. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
10. Start the Engine: Start the engine and listen for any unusual noises. Check the belt for proper routing and tension again. Inspect for any belt slippage.
Important Considerations:
* Tensioner Type: The tensioner mechanism varies. Some use a lever, others a bolt. Your repair manual will show you exactly how yours works.
* Belt Routing: Getting the belt routing wrong can cause damage. Take pictures or draw a diagram before removing the old belt.
* Pulley Alignment: Make sure all the pulleys are aligned correctly. Misalignment can cause premature belt wear.
* Belt Type: Use the correct type of serpentine belt for your vehicle.
This is a general guide. Always refer to your vehicle's repair manual for specific instructions and torque specifications. Attempting this without the proper information and tools could lead to injury or damage to your vehicle. If you're unsure about any step, it's best to consult a professional mechanic.
