The only way to loosen and tighten the serpentine belt is by loosening the alternator and sliding it back or forward. There are TWO bolts that must be loosened, one above, and one below the alternator pulley. A bit of penetrating oil can make things easier.
Tension pulley. Spring loaded. Usually has a 3/8 square hole in it, so that you can use a ratchet drive handle (or breaker bar) to release tension, to change the belt.
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The only way to loosen and tighten the serpentine belt is by loosening the alternator and sliding it back or forward. There are TWO bolts that must be loosened, one above, and one below the alternator pulley. A bit of penetrating oil can make things easier.
Tension pulley.
Spring loaded. Usually has a 3/8 square hole in it, so that you can use a ratchet drive handle (or breaker bar) to release tension, to change the belt.