There is no adjustment, they use a belt tensioner to keep it tight. If it is loose it need to be replaced.
The serpentine belt tensioner on a 2002 Ford Ranger with a 3.0-liter engine is located on the front of the engine, near the center. It is mounted on the engine block and has a pulley that maintains tension on the serpentine belt. To access it, you may need to remove any components obstructing your view, such as the air intake duct. Use a wrench or a ratchet on the tensioner bolt to relieve tension when removing or installing the serpentine belt.
How do you put on a serpentine belt on a 2002 Isuzu axiom
Change the belt
how do you change the serpentine belt on a 2001 Rodeo
Need a serpentine belt routing diagram for a 2002 Toyota rav4.
You will need to loosen the serpentine belt tensioner pulley on your 2002 Chevrolet Avalanche. Slide the belt tensioner to the right. The serpentine belt will become loose and can be removed. Reverse the process to install the new serpentine belt.
you do not adjust tension on a serpentine belt the tension is automatcally adjusted if the belt is loose, replace the belt SOME TIMES THE TENSIONER CAN BE WEEK ALSO.
where is the tensioner for the serpentine belt on a 2004 ford ranger
How do I rethread the serpentine belt on a 2002 Malibu with a V-6?
A diagram of a serpentine belt for a 2002 Mercedes Benz c240
How do you change the serpentine belt on a 2002 Saturn Vue 6 cyl
Done automatically by belt tensioner