Serpentine belt changing pattern

Yes there is several ways the diagram for bypass should be under hood on the fan shroud now if not there then the belt should minus diameter of ac fly wheel

now some engines dont have the belt bypass now this is when you have to google bypass pulley for your vehicle its not hard to put on there only around 30 dollars online had a van in same way two weeks later my engines pulley was being sold up to then my engine didnt have the bypass system for belt cause the mechanic who put engine in put the alternator and ac on the wrong sides so i sold my van then as i said two weeks later found the pulley

its easy diy for bypass pulley remove ac and put pulley in its place same bolts and pattern

It's easy to replace a serpentine belt on an Oldsmobile Aurora.

Just release tension on the serpentine belt by using a 1/2" breaker bar on the tensioner pulley. Then, undo the belt.
Insert the new belt around the various 'smooth' and 'grooved' pulleys by matching the smooth pulleys with the back of the serpentine belt, and matching the grooved pulleys with the grooved inside of the serpentine belt in question, that you've bought from the store based on the year,make, model, and engine size.

It actually will come together more easily than worrying about a belt diagram, although a belt diagram can be helpful to understand how the belt weaves in and out of the various pulleys.

Often, there will be a sticker under the hood area where a belt diagram exists, but it's not necessary to have one to perform the service yourself.

1. 1 Check to ensure the Sienna's engine is cold, then make sure the Sienna is in park, the ignition is in the off position and the key is removed from the ignition to prevent any possibility of the engine engaging during the serpentine belt replacement.
   
2. 2 Open the hood and locate the serpentine belt routing diagram sticker on the side of the engine casing. Study it for a moment before removing the existing belt. It is essential the new belt be installed exactly as the diagram indicates.
   
3. 3 Find the tensioner pulley, the main pulley that controls the serpentine belt, and fit a 1/2-inch socket wrench over the self-tensioner on the outside of the pulley.
   
4. 4 Pull the wrench to the left to move the pulley forward, which loosens the belt, then remove the belt.
   
5. 5 Compare the old serpentine belt with the new, replacement belt for length, width and number of grooves on the belt's underside. Be certain the replacement belt is the right part.
   
6. 6 Fit the new belt on to each pulley according to the serpentine belt routing diagram on the manufacturer's sticker, or according to the drawing made prior to removing the old belt. Fit the new belt on to the tensioner pulley last, again applying pressure on the pulley's self-tensioner with the half-inch socket wrench to loosen the pulley.
   
7. 7 Release the pressure on the self tensioner and allow the tensioner pulley to ease back into place, thereby tightening the new serpentine belt with the appropriate tension.
   
8. 8 Remove the wrench and close the hood.
   

Thank you and good luck,
Lee

A person doesn't need a diagram to replace a serpentine belt.

Simply thread the belt around the pulleys alternating between smooth pulley to back of the belt, and the grooved pulleys to the inside of the belt, until the last pulley is the tensioner pulley, which is loosened using a breaker bar.

It really is that simple.

Hi,
This is a simple technical task,just ensure you follow the instructions below carefully;

STEP 1 Open the hood and locate the accessory belt diagram, which shows the routing of the belt in the engine.

STEP 2. Turn the tensioner pulley to the right by placing a 15-mm wrench on the bolt in the middle of the tensioner and rotating the entire pulley. The tensioner pulley is located in the middle of the power steering pump and the crankshaft, and across from the water pump.


STEP 3 Pull the belt off one of the pulleys and slowly rotate the tensioner back into its original position.

NOTE;The tensioner pulley is spring loaded. If it snaps back into place, you stand the risk damaging the pulley.

STEP 4 Remove the old belt from the other pulleys and discard it.


STEP 5 Carefully Wrap the replacement serpentine belt around all but one of the pulleys using the belt diagram as a guide. Choose a pulley that is easy to access, i will suggest the power steering or tensioner pulley.

STEP 6 Hold the belt tight and rotate the tensioner pulley to the right.



STEP 7 Gently Slide the belt around the open pulley and move the tensioner pulley back into position.

FINAL STEP Ensure that the belt is properly wrapped around all of the pulleys. The belt sits in the middle of the groove of the pulley when properly installed.

Problem solved,good luck....

Get the replacement belt, and then note the pulleys that have smooth finish, and note the pulleys that have the grooved finish.

Just 'thread' the serpentine belt, one pulley after another alternating between the smooth and grooved until the last remaining pulley is the tensioner pulley.

Use the breaker bar to allow the pulley to accept the belt, and you're done.

If you have a 4 cylinder check out this sight for a diagram of serpentine belt http://www.thesaabsite.com/93/93pulleys.htm#BELT+%26+PULLEY+SETUP+%28NOT+SPORT+SEDAN%29

Use a 6 or 8 inch 1/2 socket extension bar and place it in the top of the tensioner pulley, there is a notch in pulley for this. The tensioner pulley is near the firewall at the top of the engine....make a diagram of the belt routing and note which side( smooth or grooved) is lying on the pulley(usually grooved side of belt). Next you would pull tensioner pulley forward and slip the old belt off....you would route your new belt the same way and slip it on the tensioner pulley last.....you will need to pull the tensioner pulley forward again to get the slack you need to slide the belt over the pulley. I have found the Saab to be one of the easiest cars to change the serpentine belt on. I hope this helps.

You can bypass both the AC compressor and the middle serpentine idler pulley with a 6PK1790. The middle pulley is bypassed by running the belt straight line from the upper rear serpentine idler straight to the power steering pulley, then over the water pump (the smooth pulley powered by the back side of the belt) and down to the engine drive pulley (harmonic balancer), bypassing the AC compressor) This works fine. On 9.5 models, the same basic idea, but a slightly different sized belt.

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.