Remove the belt, Remove one bolt out of the fulcrum part of the tensioner and remove the tensioner; reverse the precedure.
If it is a serpentine belt you replace the tensioner pulley
There is no adjustment on the spring / Tensioner. You either have the wrong belt are the tensioner itself is bad. Replace tensioner are belt.
Remove surpentine belt,then take out bolt that goes through tensioner to engine.
Remove serpentine belt. Remove alternator. The bolts that hold the tensioner on are under the alternator.
if it is a belt squeal, check and replace the serpentine belt and or the tensioner.
Put a wrench on the tensioner. Push it slack. Replace the belt while holding the tensioner in the slack position.
There is no adjustment you can do. It has an automatic self adjusting belt tensioner. If the belt seems to loose you may need to replace the tensioner and belt.
To get the belt off, you have to put a breaker bar into the square hole in the tensioner, and either pull up or down. The tensioner spring is what tighten's the belt. It is just three bolts then to get the tensioner off.
If the tensioner isn't working right, you replace it. Tension is determined by the tensioner and is not adjustable.
Loosen the tensioner pulley on your 2001 Chevy Impala. The serpentine belt will become loose. Take the old belt off and put the new belt on. Tighten the new serpentine belt with the tensioner pulley.
It has a belt tensioner on the front passenger side of the motor. If the belt is loose check the tensioner by placing a 1/2 inch ratchet in the square on the front of tensioner and pushing up or replace the belt using the same technique .
Note:The drivebelt routing decal on the radiator shroud to help during drivebelt install * To replace the belt rotate the tensioner pulley clockwise to release belt tension * Remove the belt from the auxiliary components and slowly release the tensioner * Route the new belt over the various pulleys again rotating the tensioner to allow the belt to be installed then release the belt tensioner