Here's a general outline. Specific procedures and tool requirements may vary slightly depending on your exact MPV engine (e.g., 2.5L V6 or 3.0L V6). Consult a repair manual specific to your vehicle's year and engine for detailed, accurate instructions and diagrams. A Haynes or Chilton repair manual is highly recommended.
Tools you'll likely need:
* Socket wrench set: Various sizes, including metric.
* Ratchet: To use with sockets.
* Wrench set: May be needed for some bolts.
* Jack and jack stands: Essential for safe working conditions. Never work under a car supported only by a jack.
* Wheel chocks: To prevent the car from rolling.
* New alternator belt: Make sure to get the correct belt size. Your owner's manual or a parts store can help you determine this.
* Gloves: To protect your hands
* Possibly a belt tensioner tool: This depends on your specific model. Some use a tensioner pulley that requires a specific tool for release.
General Steps (Consult your repair manual for specifics):
1. Safety First: Park the car on a level surface, engage the parking brake, and use wheel chocks. Raise the vehicle using a jack and securely support it with jack stands.
2. Locate the Alternator and Belt: Identify the alternator and the serpentine belt that runs around it and other components (power steering pump, air conditioning compressor, etc.).
3. Locate the Tensioner: Find the belt tensioner pulley. This pulley is used to release tension on the belt so you can remove and install it. The exact location and method of releasing tension varies greatly between vehicles. This is crucial and why a repair manual is essential. Some tensioners use a lever, others require a special tool.
4. Release Belt Tension: Use the appropriate method (lever or special tool) to release the tension on the belt tensioner.
5. Remove the Old Belt: Once the tension is released, carefully slip the old belt off of the pulleys.
6. Install the New Belt: Route the new belt around all the pulleys in the same path as the old belt. Make sure it sits correctly in all the grooves.
7. Release Tensioner and Check Tension: Slowly release the belt tensioner. The belt should now be snug and properly tensioned. Incorrect tension is a common mistake and can damage your components. Your repair manual will often explain how to check belt tension (sometimes a specific deflection measurement is given).
8. Lower the Vehicle: Carefully lower the vehicle using the jack.
9. Test: Start the engine and listen for any unusual noises. Check the belt for proper tension and routing.
Again, this is a general overview. A repair manual specific to your 1998 Mazda MPV is crucial for accurate and safe belt replacement. Failing to follow the correct procedure could lead to injury or damage to your vehicle. If you're not comfortable with this task, have a qualified mechanic perform the replacement.
