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You will need to turn the adjusting bolt in order to be able to have enough slack to place the belt around all the pully's. Don't forget to loosen the locking nut. I believe you have to turn the adjusting bolt clockwise to move that pully in order to be able to route the belt and place it over all the pully's but don't quote me on this. Common sense will tell you which way the pully moves to make more slack in order to put the belt around all the pully's. You can see how it is routed as well as where the adjusting bolt is located in the diagram below. Check all the pully's that the belt goes around to make sure they all spin freely to make sure none of them locked up and that this was the reason your belt snapped in the first place. I hope this helped and good luck. Have fun at work tomorrow....Here's your diagram:
You have to find the tension pully. using a 3/8 socket wrench. not the socke but the actual wrench. place the square end of the wrench into the notch on the pully and either push or pull (depends on the v-belt system) and it should move. place your v-belt around the pully's according to the diagram under your hood leaving your tension pully to be the last one the belt goes on. Move that tension pully as mentioned above and place it the belt on the pully. The diagram under the hood should also show you where that tension pully is located.
If you are talking the a/c pulley and alternator pulley, I am pretty sure the belts are different sizes (different number of ribs in the belt). So, you can just look carefully at the ribs and put the right belt on the right pully. from memory, the A/C belt goes on first and all the pullies towards the front of the car are used for that belt. The Alternator belt goes on next, and all the pullies from the crank shaft toward the back of the car (from the crank pulley) go to that. I could have those reversed, but the ribs on the belt will show you for sure. have fun!
You can find one at autozone.com, you may have to sign up for a free account, but you can view the job diagram there. It looks like for a 6 cylinder, there are two belts, one goes from the crank pully around the water pump then the alternator, and the other goes around the crank shaft then the power steering pump and then the air compressor pully. The power steering and air is a "v" belt and the other is a ribbed serpentine belt. they both just wrap around no wierd routing. the only thing I do not see is the idler pully or tensioner pullys.
For the 3.0L Vulcan, you have a tensioner that is located just below the power steering pully. Use a 15mm wrench or the 15mm shallow well socket that comes in a Serpentine Belt tool to push the tensioner toward the rear of the engine compartment. Take the old belt off and route the new belt. The belt begins at the crankshaft pully, goes under and around the a/c compressor, up around the power steering pump, around (with the flat edge) the idler pully, around the alternator, the flat edge then sits against the tensioner and back around to the water pump pully. You should have a belt routing diagram on the underside of the hood just above the serpentine pully assembly.
What engine do you have? The 3.3 and 3.8 engines have a single serpentine belt, and a belt tensioner, so no adjustment is needed. Did you replace the tensioner, and want to know how much to torque it? countrycurt0
well i was going to scan and sent the picture here but printer wont work the tensionor is the last end of the belt you want to do. you will have to jack it up and remove the splash gaurd only 3 screw to have excess to the belt. once you are ready run the belt under the harmonic blancer going to your right go on top smog punp and around air conditioner pully go under idler pully and up and over the alternator pully down and around power steering pump and up to tensioner. now get a 156 millimeter sock or wrenc and pull down on tensioner and put belt on it done if you need to auto zone can print you a diagram out for free