The serpentine belt and the tensioner on a 300 SE motor is part of the fan system that controls all of the smaller motors on the front of the engine. The serpentine belt helps turn the alternator, Power Steering pump, water pump, and the fan. The tensioner is a pulley on this belt that helps to keep the belt tight enough to stay on, but not too tight to hinder operation.
You can change the serpentine belt by loosening the tensioner pulley. When the tensioner pulley is loose and the serpentine belt will become loose. Put the new serpentine belt on and tighten the tensioner pulley.
That I know of, there is NO serpentine belt, unless you are talking about the the Timing Belt (hardly serpentine, but anyway), it has a belt tensioner, not automatic, though.
You can remove your serpentine belt by loosening the tensioner pulley. Pushed the tensioner pulley to the right and the serpentine belt can be easily removed.
Loosen the tensioner pulley. The serpentine belt will become loose and can be removed. Put the new serpentine belt on and tighten the tensioner pulley.
Loosen the tensioner pulley. Slide the tensioner pulley to the right. The serpentine belt will come loose. Remove the serpentine belt. Reverse the process to install the new serpentine belt.
You will need to loosen the tensioner pulley. Slide the tensioner pulley to the right and the serpentine belt will become loose. Remove the old serpentine belt and put the new serpentine belt on. Slide the tensioner pulley to the left and tighten it.
Open the hood and look. If it has a serpentine belt there is a tensioner.
Loosen the tensioner pulley on your 1988 Chevrolet Corsica. When the tensioner pulley is loose the serpentine belt will easily come off. Put the new serpentine belt on and tighten the tensioner pulley.
Your Explorer has a serpentine belt tensioner which keeps the proper tension on the serpentine belt unless the tensioner has failed.
The serpentine belt tensioner is held in place by one bolt. The retaining bolt goes through the middle of the serpentine belt tensioner pulley.
Put the serpentine belt around the pulleys on your 2001 Chrysler LHS. Tighten the serpentine belt by pushing the tensioner pulley to the left. Tighten down the tensioner pulley and the serpentine belt will be tight.
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.