Hi, I have have the very same problem. I have a 1991 Chev 3/4 tonne. The long stud (bolt) keeps turning and turning ...and the pulley has become loose but won't remove...and the stud keeps turning without coming off even though I put a pry bar behind it at the same time as using my rachet! Rodney
you dont adjust a tension pulley you adjust the position of the compressor to tighten the belt
It probably is the compressor that is locked up. If it is ok until the a/c is turned on, the compressor is locked up. If it is just the pulley bearing a special puller is required to remove the pulley and bearing.
To adjust the tension on a 1994 Chevy pickup's serpentine belt, locate the belt tensioner, which is typically a spring-loaded arm. Use a wrench or a ratchet to turn the tensioner pulley in the direction indicated (often counterclockwise) to relieve tension on the belt. Once the belt is loosened, you can replace it if needed or adjust it as necessary. Ensure the belt is properly seated on all pulleys before releasing the tensioner to apply proper tension again.
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All instructions are assuming you are working from the front of the vehicle. If you do not still have the sticker showing you the belt routing attached to the vehicle take note of the route it takes before beginning. The Pulley is on your left, with a small square hole. Insert your 3/8 in ratchet into this hole, and pull the left (counter clockwise). You should then be able to remove the belt. The pivot point of when you released the tension is the bolt that will remove the tension pulley. Simply remove it, and replace the tension pulley assembly. (The part cost me about $15 at Advance Auto in Florida- I had to call ahead and I had my wife pick it up.)
Yea... that's a unique problem. There is a special puller that's used to remove the power steering pump pulley. You can usually borrow, rent or buy the puller from most auto parts retailers. After the pulley is off you can get to the bolts.
Typically it's the highest pulley, right behind the fan shroud. The tensioner pulley is spring loaded to assure proper belt tension and most tensioners provide a way to easily remove the tension to the belt so that you can replace the belt or belt driven accessories.
To remove the alternator from a 2005 Chevy Cobalt, first disconnect the negative battery cable to prevent electrical shock. Next, remove the drive belt by releasing tension from the tensioner pulley. Then, disconnect the electrical connectors from the alternator and remove the mounting bolts. Finally, carefully extract the alternator from its housing.
That requires the use of a power steering pulley PULLER. ( A special tool ) The pulley is pressed on.
To change the idler pulley on a Chevy Colorado, first, disconnect the negative battery terminal and relieve any tension on the serpentine belt using a wrench on the tensioner pulley. Remove the belt from the idler pulley, then unbolt the idler pulley from its mounting bracket using the appropriate socket size. Replace it with the new pulley, reattach the belt, and finally reconnect the battery terminal. Make sure everything is secure and test the installation by starting the engine to ensure the pulley operates smoothly.
http://youtu.be/u5BUl9R42t0
remove the drive shaft