Replace a serpentine belt correctly

The tensioner should adjust and take the correct belt and tension it correctly. The reasons for belts coming off and worn / loose belt, wrong belt, tensioner not working, or incorrect belt alignment.

https://www.google.com/search?q=1996+buick+regal+custom+serpentine+belt+alignment

http://www.serpentinebeltdiagram.com/serpentine-belt-diagram-2010-2009-saturn-aura-v6-36-liter-engine-06778/ http://www.serpentinebeltdiagram.com/serpentine-belt-diagram-2010-2009-saturn-aura-v6-36-liter-engine-06778

Rotate the tensioner till belt is loose. Move belt off of the ideler pulley. Replace and use guide found under hood for correct belt routing

Try putting the belt on the alternator then slide it under the idler pulley last.

Pry the tensioner with appropiate tool, then pull the belt off the alternator pulley before releasing the tensioner. Note the routing of belt before doing this job. Make sure the new belt is same length before putting back on, reverse the procedure.

Here's a link to a series of videos that will explain how to change the serpentine belt.

http://www.wonderhowto.com/how-to/video/how-to-change-a-serpentine-belt-on-your-car-39904/

Here is a diagram of the belt routing which will help you put the belt back on correctly...

I aassume you are asking how to change your serepentine belt. Follow this link to a video series which explains how to change it...

http://www.wonderhowto.com/how-to/video/how-to-change-a-serpentine-belt-on-your-car-39904/

You'll need a diagram of the belt routing so you can put it back on correctly...

When this idler wears out it makes a growling noise that changes with engine RPM. A Bad Idler Pulley May Wobble & Wear Out Your Serpentine Belt Prematurely. Get Rid Of That Horrible Noise & Change.

Remove the serpentine belt by using a breakover bar, ratcher or serpentine belt removal tool with the correct size socket for the pulley mounting bolt. Rotate tensioner arm to release tension. Remove the bel. Using the proper size socket, remove the tensiones mounting bolt and remove tensioner.

Before installing the new tensioner, make sure the mounting surface for the tensiones is clean and free rust or other obstructions. Find the locator pin hole and rotate the replacement tensiones until the locator pin and the hole line uo. Insert the pin into the hole. Reinstall the mounting bilt and torque down to tight fit.

Rotate the tensioner arm to install the serpentine belt. Make sure the belt is correctly fitted to all pulley in the drive system. Start the engine to check for any problems. Extreme care should be taken when reinstalling the serpentine belt because some of the pulleys are located in remote positions ans it is very hard to see that belt is seated properly in all of the grooves. If the belt isn't seated properly, the belt can "ride out" of the grooves and the belt can be damaged.

Also must review the ZJ Repair Manual Secc-7-Cooling-System for graphics references.

Hope helped with this. Remember rated this help. Good luck.

The screeching is probably from the belt being loose and the wheels spinning on the belt You may want to get a new belt and before you replace it make sure that the automatic belt tensioner is working correctly put a wrench on the wheel with bolt and make sure it moves back and forth should feel tensionlike a heavy duty spring attached to it then make sure that you route the new belt correctly look on hood for a diagram or invest in a book that shows the correct route

Don't have a chart, video, or diagram available at the moment. Can offer you generic advice.

1.Somewhere in the middle of that serpentine belt, that is wrapped around all those pulleys, is an Idler tensioner Pulley. All this pulley does, is put tension on that serpentine belt. Usually located somewhere in the middle.

The Idler tensioner Pulley will be on a bracket. It will be on the end of the bracket. The bracket usually has a 1/2 inch square hole in it. This is used for a tool, that resembles a 1/2 inch breaker bar.
-> I, use a 1/2 inch breaker bar.
The 1/2 inch breaker bar is inserted into this square hole, and the bracket is pulled to one side.
This pulls the tensioner pulley away from the serpentine belt, allowing the belt to have slack, and then the belt is slipped off of one of those pulleys. Release the pressure slowly, remove the tool. Then the serpentine belt is removed all the way.

(The Idler tensioner pulley bracket, can only be moved in one direction, to take pressure off of the serpentine belt. The direction opposite, of it putting pressure on the serpentine belt.

The spring used to put pressure is Very strong. This is also an area, where you can easily slip, cutting your knuckles, or fingers, or hand, on sharp objects. Use caution, you may want to wear a glove, or gloves!)

Then the new serpentine belt is wound around the pulleys in the correct pattern, the Idler Tensioner Pulley is once again pulled to the side, and the last of the serpentine belt is slid into place. Then you slowly release the tensioner pulley, and it puts pressure on the serpentine belt once more.

Make sure the serpentine belt is in the grooves of the pulleys, and is wound around in the correct pattern.

On the car hood inside, or on the radiator support, or perhaps on the inner fender well, or in the Owners Manual, it should show the correct pattern for installing the serpentine belt.