However, the general process is as follows:
1. Identify the belt: Locate the alternator belt. It's the serpentine belt (a single, long belt) that drives multiple components, including the alternator.
2. Loosen the tensioner: There's a tensioner pulley designed to allow you to loosen the belt. This usually involves a tensioner pulley with a bolt or a lever. You may need a wrench or a ratchet and socket to loosen this tensioner. The owner's manual will show you where this is and how to access it. Some tensioners require you to push or pull on the tensioner to release tension on the belt while others require you to use a tool to rotate the pulley.
3. Remove the old belt: Once the tension is released, the belt should be loose enough to slip off the pulleys. Work your way around, carefully removing the belt from each pulley.
4. Inspect pulleys and belt: Carefully examine the pulleys for any damage or wear. Also, check the condition of the old belt. If any pulley is damaged or the old belt is severely worn or cracked, replace them before installing the new belt.
5. Install the new belt: Carefully route the new belt around all the pulleys in the correct order. Again, your owner's manual is critical here. Start by placing the belt over the crankshaft pulley (usually the largest pulley). Then, route it to the next pulley and so on, following the correct path as shown in your manual.
6. Tighten the tensioner: Once the belt is around all the pulleys, carefully release the tensioner. The belt should now be snug against all the pulleys. You may need to slightly adjust the tensioner for optimal tension. The belt should not be so tight that it's difficult to twist, nor so loose that it slips. A properly tensioned belt will have a little deflection in the middle (about half an inch) when pushed firmly.
7. Double-check routing: Before starting the engine, verify the belt is routed correctly around all pulleys. A misrouted belt can cause damage.
8. Start the engine: Start the engine and listen for any squeaking or squealing sounds. This usually indicates a problem with the belt tension or routing. If you hear these sounds, stop the engine immediately and re-check your work.
Important Notes:
* Safety First: Always disconnect the negative battery terminal before working on any car's electrical system.
* Tools: You'll likely need a wrench or socket set.
* Manual is crucial: The information above is general. Your 1997 Mazda 626's owner's manual contains specific instructions and diagrams that you must follow.
* Professional help: If you're uncomfortable performing this task, it's best to take your car to a qualified mechanic.
Failing to follow the correct belt routing can lead to premature belt wear, pulley damage, and even engine damage. Take your time, refer to your owner's manual, and if you are unsure, seek professional help.
