LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2004 >> CTS Base, 3.6 7 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Mechanical - 3.2L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Timing Belt Timing Procedure >> Timing Belt Tensioner Adjustment

Timing Belt Tensioner Adjustment

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: The following steps are the COMPLETION of adjusting the timing belt and must not be performed as a stand alone operation.
  1. With the J 42069-10 in place locking the crankshaft at TDC:
      Fig 1: Setting Final Timing Belt Tension
      GM826216Courtesy of GENERAL MOTORS CORP.
    1. Loosen the timing belt eccentric locking nut.
    2. Turn the eccentric counter clockwise to full stop, then back to the following specification:
      • NEW BELT 

        Until the reference mark is 3-4 mm (0.118-0.157 in) (a) above the datum line.

      • USED BELT 

        Until the reference mark is aligned with the datum line.

        Tighten:  Tighten the timing belt tensioner eccentric locking nut to 20 N.m (15 lb ft).

    2. Fig 2: Identifying J 42069-20
    GM345823Courtesy of GENERAL MOTORS CORP.
  2. If the timing belt upper idler pulley bolt has not been previously torqued to specification:

    Tighten:  Tighten the timing belt upper idler pulley bolt while holding the eccentric in place with the J 42069-40 to prevent movement, to 40 N.m (30 lb ft).

  3. Remove the J 42069-10 and the J 42069-20.
    4. Fig 3: Identifying Index Mark On Oil Pump Cover
    GM828921Courtesy of GENERAL MOTORS CORP.
  4. For final inspection, once again rotate the crankshaft in the engine rotational direction, clockwise 2 revolutions using the J 42098  until reaching 60 degrees BTDC. See Special Tools and Equipment .
    5. Fig 4: Identifying J 42069-10
    GM345377Courtesy of GENERAL MOTORS CORP.
  5. Install the J 42069-10 to the crankshaft sprocket.
  6. Rotate the crankshaft in the engine rotational direction, clockwise using the J 42098  until the lever of the J 42069-10 firmly contacts the water pump pulley flange. See Special Tools and Equipment .
  7. Secure the moveable lever of the tool to the water pump pulley flange.
    8. Fig 5: Identifying Alignment Reference Marks
    GM159005Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The alignment marks on the timing belt will no longer align with the marks on the camshaft gears after one or more engine revolutions.
  8. Inspect the alignment of the reference marks on the camshaft gears with the notches on the rear timing belt cover, as well as the mark on the crankshaft sprocket and oil pump housing.
    9. Fig 6: Identifying J 42069-20
    GM826220Courtesy of GENERAL MOTORS CORP.
  9. Use the J 42069-20 to inspect the alignment of the camshaft gears 3 and 4.
  10. Use the J 42069-20 to inspect the alignment of the camshaft gears 1 and 2.
  11. Repeat the procedure again if the marks do not align exactly.
  12. If the reference marks match exactly, further timing belt adjustment IS NOT necessary.

    Continue with reassembly of the engine.

  13. Remove the J 42069-10 and the J 42069-20.
  14. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
  15. Install the timing belt cover. Refer to Timing Belt Cover Replacement .
scientia non olet · About LEMON Manuals