Step 1: Disconnect the battery negative. This is an especially important first step, as all the electricity for the entire vehicle goes through the alternator. A wrench or a screwdriver across connectors can quickly fry voltage regulators, expensive engine computers, and cause injury.
Step 2: On a v-belt vehicle there are usually two bolts holding an alternator to its mounts. One bolt or assembly maintains tension on the belts, and the other holds the alternator in place. First loosen and remove the tension bolt or assembly.
Step 3: Next, loosen the pivot bolt.
Step 4: Remove the pivot bolt. Remove electrical connections and slide the pivot bolt through the mount. Remove the alternator. This is a good time to check and replace worn belts.
Step 5: Compare the old and new alternators to make sure everything is the same. Transfer any connectors or bolts from the old to the new.
Step 6: Reverse the removal procedure and install the new alternator.
Step 7: Check belt tension. A little under an inch of deflection is ideal. Too much tension will quickly destroy bearings. Better a slightly loose belt than one too tight.
Step 8: On this vehicle, the alternator and the engine-driven accessories rely on one serpentine belt. A spring-loaded tensioner holds the belt in place. Slack allows the belt and the alternator to be removed.
Step 9: Start the vehicle and check alternator output with a multimeter.
Step 10: Re-check belt tension after about 500 miles. Adjust tension if required.