Question about 1993 Saturn SC1

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What the easy way to fix your altinator - 1993 Saturn SC1

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  • Saturn Master
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  1. Disconnect the negative battery cable.
  2. Remove the serpentine drive belt.
  3. Raise and support the vehicle safely.
  4. Remove the right front wheel from the vehicle.
  5. Remove the right wheel inner fender splash shield.
  6. If equipped, remove the alternator dust shield attaching bolt and unclip the shield from the alternator. When removing the dust shield, be careful not to damage the rubber boot over the battery's positive terminal.
  7. Disengage the alternator field wire connector.
  8. Remove the retaining nut and wire from the positive (B+) terminal on the back of the alternator, using alternator output stud wrench SA9401C or equivalent, as a back-up wrench to prevent the stud from rotating. If the positive terminal stud rotates, the plastic insulator will crack or break, causing alternator failure.
  9. Remove the upper and lower alternator attaching bolts.
  10. Remove the alternator from the vehicle through the wheel well opening.
To install:
  1. Position the alternator in the vehicle and install the lower attaching bolt.
  2. Install the upper attaching bolt and tighten both bolts to 24 ft. lbs. (32 Nm).
  3. Engage the alternator field wire connector.
  4. Install the B+ terminal wire. The battery terminal wire should be placed on the back of the alternator between a 10 and 11 o'clock position.
  5. Be sure to use the alternator output stud wrench SA9401C to prevent the terminal stud from rotating, then tighten the alternator positive terminal nut to 89 inch lbs. (10 Nm).
  6. Install the alternator dust shield and tighten the fastener bolt to 89 inch lbs. (10 Nm).
  7. Install the serpentine drive belt.
  8. Install the wheel well splash shield and right front wheel. Tighten the wheel lugs in a criss-cross pattern to 103 ft. lbs. (140 Nm).
  9. Remove the supports and lower the vehicle.
  10. Connect the negative battery cable
Pictures on next post!

Posted on Nov 19, 2009

  • Greg Bernett
    Greg Bernett Nov 19, 2009

    Removal and Installation from above steps!

    Compress the belt tensioner and disengage the serpentine belt, then remove it from the top of the engine compartment

    After removing the front wheel, remove the inner fender splash shield

    View of the alternator location with the inner fender splash shield removed

    Loosen the alternator dust shield retaining fastener (1), being careful not to damage the dust boot over the positive battery terminal (2)

    Remove the alternator dust shield from beneath the vehicle

    Disengage the alternator field wire connector

    Keep the alternator output stud from rotating by holding it secure with a wrench

    If it is more accessible, remove the upper alternator attaching bolt from the top of the engine compartment

    Remove the lower alternator attaching bolt from beneath the vehicle

    Remove the alternator through the wheel well opening


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  • Contributor
  • 26 Answers

Only two ways to fix one are to replace with a new one or have yours rebuilt by a shop that rebuilds them. Removal and installation are not too challenging other than making sure to get your belt the right tension. You want to be able to push the belt in about an inch or so in the center between both wheels. If it is too tight it will burn it up and too loose and it will squeal.

Posted on Nov 19, 2009

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