usally' u put a 15mm or 5/8" wrench on the nut in the middle of the pulley & move the SPRING loaded Pully.IF U aren't sure wich Pulley-WATCH witch pulley Vibrates when the engine is idleing-then turn OFF the engine & replace the Belt.
you have to put a socket wrench into the hole on the tensioner and pull up on it to release the tension from the belt.
You don't. The serpentine belt tension is automatically maintained by the tensioner pulley, which is an idler pulley located on the passenger side of the system and looks like it doesn't drive anything. If the belt tension is incorrect, the tensioner pulley must be replaced. If the question meant 'how to release tension from the belt' (for removal, etc.), this is done by applying the correct size socket wrench to the tensioner pulley's center nut and rocking the pulley away from the belt.
Release the tension on the belt using the tension pulley. Install new belt. I have a diagram for a 2002 will sent it and more detailed info if you email me at msgt4sped@aol.com
how do i find the auto tension release for the serpentine belt on a 2004solara
BELT
A serpentine belt on an engine is held in place by a pulley that maintains the proper tension on the belt. This pulley can be pulled up to release the tension on the belt. Do not pull the pulley out, but gently up or you'll risk damaging it.
belt tension er spring
u need to relaese tension on the tension pulley. this is usually done with a long socket wrench handle. when u release tension and remove belt you then release tension on pulley until you have routed new belt . you then move tension pulley again until you can put belt on it, then release pulley and it will automatically provide correct tension
15 mm wrench Put it on the tension pulley and pull to take tension off belt
put a wrench on the tensioner pully and pull it to release tension on the belt
tenion pulley on serpentine belt will not release on 94 S-10 4 cy. with air
If it is a drive belt and not a serpentine belt is has no tensioner. You manually adjust the tension by normally adjusting tension by moving the alternator. Loosen to bolts holding the alternator in place and then adjust the tension. Tighten the bolts when the tension is right. If it is serpentine belt if you follow the belt around the the engine you will see the tensioner.