The easiest way to loosen the tensioner is to use an automatic belt tensioner. This can be used on a serpentine belt which is connected to every pulley on the engine.belt.
On the tensioner arm there is a bolt holding it there. To the right of the bolt will be a square cut into the arm of the tensioner, use a 3/8 inch socket wrench (no attachment, just the wrench itself) and turn to the right this will loosen the belt to remove it.
You can change the serpentine belt on your Chevrolet trailblazer, by loosening the tensioner pulley. With the loosened tensioner pulley the belt will come off easily. Tighten the new belt with the tensioner pulley.
Insert a socket or wrench on the spring-loaded serpentine belt tensioner then pull back; the belt will loosen.
To remove the accessory drive belt or the serpentine belt from the motor on a 1989 Sunbird, it is necessary to loosen the belt tensioner. Look for a pulley that has a bolt in a slot. Loosen the bolt and move the tensioner so there is a gap in the belt. Then remove the belt from each pulley.
fans are driven electronically no belt. The serpentine belt is taken off by taking the tension off at the tensioner and replacing by following the pattern on your strut tower.
locate belt tensioner below alternator on pass. side insert 3/8 drive ratchet in center of tensioner pulley rotate to loosen belt remover belt
You can change the drive belt, on your lawnmower, by loosening the tensioner pulley. With the tensioner pulley, loosen the drive belt will come off and can be replaced.
Most likely use a socket and longer extension bar then loosen by pulling clockwise
You need to loosen the belt tensioner. There is a large bolt that needs to be loosened in the center of the tensioner pulley. Then the small vertical bolt is turned in the direction to loosen the belt. After the tensioner is loose replace the belt and retension it.
Use a 1/2" drive breaker bar in the tensioner.
There is no "fan belt"; the 2.5L V-6 has two accessory drive belts, both with tensioners (loosen the large nut in the center of the tensioner pulley, and adjust the threaded adjustment rod), and the 2.0L I-4 has a single accessory drive belt with a tensioner (loosen the clamp bolt & adjust the threaded adjustment rod).
The serpentine belt is replaced by relaxing the tensioner arm using a big wrench or screwdriver. Then pop the belt off and slide the new one on. www.trailvoy.com Trailblazer enthusiasts with all the answers!