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wrench9124
wrench9124, ASE Certified Technician
Category: Car
Satisfied Customers: 3432
Experience:  GM Master Certified, ASE Master Certified, 32 years exp, GM Hybrid Certified, GM Mark of Excellence
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1997 astro: alternator..pully..it right, and the nut does loosen, do I

Resolved Question:

Hi, I''m trying to remove alternator from my 1997 astro van. I tried to release the tension pully by moving it counterclock wise, but the nut loosen. Am i doing it right, and the nut does loosen, do I have to continue until the nut comes off?
Submitted: 9 years ago.
Category: Car
Expert:  wrench9124 replied 9 years ago.

Hello, here is the instructions for belt and tensior. i hope this helps!!!

  • Remove the air cleaner outlet duct.
    Object Number: 177620  Size: SH

  • Install a 3/8 inch drive wrench on the drive belt tensioner arm and rotate the arm counterclockwise.
  • Remove the drive belt.
  • Slowly release the tension on the drive belt tensioner arm.
  • Installation Procedure


      Object Number: 43858  Size: SH

    1. Route the belt over all the pulleys except the tensioner arm.
    2. Observe drive belt routing for vehicles without air conditioning.
      Object Number: 43859  Size: SH

    3. Observe drive belt routing for vehicles with air conditioning.
      Object Number: 177620  Size: SH

    4. Install a 3/8 inch drive wrench on the drive belt tensioner arm and rotate the arm counterclockwise.
    5. Install the drive belt over the drive belt tensioner pulley.
    6. Slowly release the tension on the tensioner arm.
      Object Number: 172992  Size: SH

    7. Inspect for the drive belt being properly installed on the pulleys.
      Object Number: 172993  Size: SH

    8. Avoid mis-positioning the drive belt by one or more grooves.
      Object Number: 172989  Size: SH

    9. Confirm for the proper drive belt size and the correct drive belt routing by observing the location of the fix pointer and the index marks on the drive belt tensioner. With a new drive belt installed, the fix pointer should align within the indentation on the drive belt tensioner.
      Object Number: 172991  Size: SH

    10. With a used drive belt installed, the fix pointer should not align past the index mark.
    11. Install the air cleaner outlet duct to the MAF sensor.
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