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Installation Procedure

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    Fig 1: Timing Belt And Assembly Tool
    GM2027565Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Threading the timing belt through the engine mount bracket is only permissible in conjunction with the assembly tool supplied with NEW timing belts or otherwise it is possible to damage the toothed belt at this stage by kinking it.

    NOTE:

    If the toothed belt has been used, observe the direction of rotation.

  1. Install the timing belt (1) in the enclosed assembly tool (2).
  2. Guide the timing belt through the engine mount bracket with the assembly tool.
  3. Remove the assembly tool.
    4. Fig 2: Drive Belt Routing
    GM2512747Courtesy of GENERAL MOTORS COMPANY
  4. Install the timing belt (1).
  5. Guide the timing belt past the tensioner and place it on the crankshaft sprocket wheel.
  6. Place the timing belt on the exhaust and intake camshaft position actuator adjusters.
  7. Raise and support the vehicle.
  8. Install the timing belt idler pulley. Refer to Timing Belt Idler Pulley Replacement .
    9. Fig 3: Drive Belt Tensioner, Allen Key And Locking Pin
    GM1937014Courtesy of GENERAL MOTORS COMPANY
  9. Apply tension to the drive belt tensioner (2) in the direction of the arrow, using an allen key (1).
  10. Remove the EN-6333  locking pin (3).
    11. NOTE:

    The timing belt tensioner moves automatically to the correct position.

  11. Release tension on timing belt tensioner.
    12. Fig 4: Locking Device And Bolt
    GM2027000Courtesy of GENERAL MOTORS COMPANY
  12. Remove bolt or bolted connection (1).
  13. Remove EN-6625  locking device (2).
  14. Lower the vehicle.
  15. Remove the EN-6340  locking tool.
    16. Fig 5: Camshaft Adjuster Locking Tool
    GM2538042Courtesy of GENERAL MOTORS COMPANY
  16. Check the timing
      NOTE:

      Note the marking at the camshaft sprockets.

    1. Turn the crankshaft 720° in the direction of engine rotation by the crankshaft balancer bolt.
      2. NOTE:

      The spot type marking (4) on the intake camshaft adjuster does not correspond to the groove of EN-6340-left during this process but must be somewhat above as shown.

    2. Install EN-6340-left  locking tool (1) into the camshaft adjusters as shown.
      3. NOTE:

      The spot type marking (3) on the exhaust camshaft adjuster must correspond to the groove on EN-6340-right.

    3. Install EN-6340-right  locking tool (2) into the camshaft adjusters as shown.
  17. Remove the EN-6340  locking tool.
  18. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
    19. Fig 6: Aligning Timing Belt Drive Gear And Oil Pump Housing
    GM2027014Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The timing belt drive gear and oil pump housing must align.

  19. Control the crankshaft balancer position.
    20. Fig 7: Locking Device And Bolt
    GM2027000Courtesy of GENERAL MOTORS COMPANY
  20. Install EN-6625  locking device (2) to block the crankshaft.
  21. Install the bolt or bolted connection (1).
    22. Fig 8: Timing Belt Lower Front Cover
    GM2026840Courtesy of GENERAL MOTORS COMPANY
  22. Install the lower timing belt cover (1).
  23. Install the 4 lower timing belt cover bolts (2) and tighten to 6 N.m (53 lb in).
    24. Fig 9: Crankshaft Balancer And Bolt
    GM2027569Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  24. Install the crankshaft balancer (2).
  25. Install a NEW crankshaft balancer bolt (1) and tighten in 3 passes using the EN-45059  meter :
    1. First pass to 95 N.m (70 lb ft)
    2. Second pass to 45°
    3. Third pass to 15°
    26. Fig 10: Locking Device And Bolt
    GM2027000Courtesy of GENERAL MOTORS COMPANY
  26. Remove bolt or bolted connection (1).
  27. Remove EN-6625  locking device (2).
    28. Fig 11: Automatic Transmission Bracket Bolt
    GM2538037Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  28. For vehicle with automatic transmission: Install the bolt (1) and tighten to 45 N.m (33 lb ft).
    29. Fig 12: Connection Bolt
    GM2538035Courtesy of GENERAL MOTORS COMPANY
  29. For vehicle with manual transmission: Install the bolt (1) and tighten to 40 N.m (32 lb ft).
  30. Install the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .
  31. Install the right front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement .
  32. Lower the vehicle.
  33. Remove the EN-6340  locking tool.
  34. Install the timing belt upper front cover. Refer to Timing Belt Upper Front Cover Installation .
  35. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  36. Close the hood.
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