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Re: where is the tension pulley on a 1997 saab 900s
You mean the serpentine belt . Do you ? If thats what you mean, the tensioner is a component that has a bolt at the middle which when lossened with a wrench will lossen the tension on the serpentine belt it has a spring and can be moved . if it was a seperate belt it woud have a bolt and a brace with a U shaped hole in the middle. You would lossen the bolt and pull on the belt and it lossens up.
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You place a breaker bar, large screw driver, pry bar, etc...in the notch that is located on top of the tensioner pulley.....The tensioner pulley is located on top of engine near the firewall on the passenger side of car...if you stand at the passenger side of your car and look at your serpentine belt following it around towards the firewall (windshield) the tensioner pulley is at the apex and there is about an 1 1/2" notch at the top of that....that is where you would put your pry bar and you would pull back ( towards the front of your car) on that tensioner and you will see the serpentine belt loosen. I can post a picture is you need one....
If this car has a v-6 (2.5). You have to loosen the belt tensioner. It is located along the side of the passengers wheel well. Turn the passengers tire outwards, and kneel down. Look inside the wheel weel, and about the same line of sight as your eyes when you look in there you will see, a bolt, and a pulley, with a bolt in the center of the pulley. Loosen the pulley bolt first, and then loosen the tensioner bolt, Pun on belt careful to watch the routing, and pull pulley tight, with hand, and then tighten the tensinner bolt. Belt should be taught, but not very tight. Then tighten the pulley bolt.
That wasn't right though. There is a 1/2 slot for a 1/2 inch breaker bar and when two holes are lined up you stick a drill bit or similar peice through to lock it in place till you get the belt routed then pull back alittle bit on the breaker bar to remove tension from the drill bit . Remove the drill bit and release tension on breaker bar and remove it to put tension on the belt.Then check alignment , positioning, routing of the belt visually.
The Saab fan is electrically controlled directly via the ECU and has no belt. I will therefore assume you are referring to the accessory belt that drives the power steering pump, the alternator, AC, etc. Pictures and step by step instructions are here and here. Both of these sites are also demonstrating the use of a shorter belt to bypass a center idler pulley that fails frequently (and that was eliminated altogether by Saab in the transition from new generation 900s to the first iteration of the 9-3 model).
The Saab accessory drive (serpentine) belt is self-tensioning by means of a
tensioning pulley. Excessive play means that the current belt is
spent and must be replaced. It is a very good idea to replace the idler
pulley above the tensioner pulley at this time as the bearings fail over time. You can get an
aftermarket pulley of machined billet aluminum construction with a
repalceable bearing race from Wazee Pulleys.
This pulley is superior to the stock one in just about every
conceivable way. To remove the belt you will need a 1/2 inch socket extension bar that
will fit exactly in the top of the tensioning pulley housing and a six
mm allen key. This site
shows the proper routing of the stock belt and the routing procedure to
bypass the highly failure prone center idler pulley if you so elect, as
well as the procedure to remove and fit a new belt. Note, the belts
shown on this site are for the short-belt modification only. The stock
replacement belt is Part Code: 4904728Brand: Description: Serpentine belt for any 94-98 NG 900 4cyl.Price: $35.90 at Eeuroparts.com. To remove the belt, you will find it best to remove the airbox to allow you more room at the top end to work. Also, jack up the car and remove the passenger wheel to give you access down below.