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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 1.8L (LUW)) >> Repair Instructions - On Vehicle >> Cylinder Head Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Assemble the cylinder head. Refer to Cylinder Head Assemble .
  2. Install the valve lifter. Refer to Valve Lifter Installation .
  3. Install the camshafts. Refer to Camshaft Installation .
  4. Install the thermostat housing. Refer to Engine Coolant Thermostat Housing Installation .
  5. Clean the sealing surfaces.
  6. Inspect for plane surface.
    • Cylinder block, cylinder head
    • Straight-edge, feeler gauge
    7. Fig 1: Cylinder Head And Bolts
    GM2652382Courtesy of GENERAL MOTORS COMPANY
  7. Install a NEW cylinder head gasket (3).
  8. Install the cylinder head (2).
    9. Fig 2: Cylinder Head Bolts Tightening Sequence
    GM2027018Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  9. Install 10 NEW cylinder head bolts (1).
  10. Tighten the bolts as shown in sequence in 5 passes, using the EN-45059  meter :
    1. First pass to 25 (18 lb ft)
    2. Second pass to 90 degrees
    3. Third pass to 90 degrees
    4. Fourth pass to 90 degrees
    5. Final pass to 45 degrees
  11. Install the timing belt rear cover. Refer to Timing Belt Rear Cover Installation .
    12. Fig 3: Aligning Camshafts Horizontally
    GM2026512Courtesy of GENERAL MOTORS COMPANY
  12. Align the camshafts horizontally by the hexagon arrows, until the EN-6628-A  locking tool can be inserted in both camshafts.
    13. Fig 4: Locking Tool
    GM2026534Courtesy of GENERAL MOTORS COMPANY
  13. Insert the EN-6628-A  locking tool (1) into the camshafts.
    14. Fig 5: Camshaft Position Actuator Adjuster Closure Bolt
    GM2026844Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If the cover is contaminated with oil, you have to clean it close.

    NOTE:

    A second person is required. Counterhold against the hexagon of corresponding camshaft with an open-ended wrench.

  14. Install intake camshaft position actuator adjuster and/or the exhaust camshaft position actuator adjuster (3).
  15. Install a NEW intake camshaft position actuator adjuster bolt and/or a NEW exhaust camshaft position actuator adjuster bolt (2).
    16. Fig 6: Spot Type Markings And Special Tool
    GM2373398Courtesy of GENERAL MOTORS COMPANY
  16. Install the EN-6340  locking tool into the camshaft position actuator adjusters.
      NOTE:

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

    1. Install the EN-6340  locking tool - left (1) in the camshaft position actuator adjusters as shown.
      2. NOTE:

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

    2. Install the EN-6340  locking tool - right (2) in the camshaft position actuator adjusters as shown.
    17. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

    NOTE:

    If the cover is contaminated with oil, you have to clean it close.

    NOTE:

    A second technician is required.

    NOTE:

    Use an appropriate open-end wrench in order to counterhold the camshaft hexagon. A thin cross-section wrench is required for a better fit. The Use of EN-6628-A  locking tool is for the camshaft adjustment to prevent misalignment of the camshafts. The wrench is required to counterhold the camshafts during bolt torque procedure.

  17. Tighten the camshaft position actuator adjuster bolts (2) in three passes use the EN-45059  meter :

    Hold at the appropriate camshaft hexagon.

    1. First pass tighten to 50 (37 lb ft).
    2. Second pass to 150 degrees.
    3. Final pass to 15 degrees.
    18. NOTE:

    Check the closure bolt seal ring.

  18. Install the 2 camshaft position actuator adjuster closure plugs (1) and tighten to 30 (22 lb ft).
  19. Remove the EN-6628-A  locking tool.
    20. Fig 7: Crankshaft Sprocket
    GM2028278Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    When installing the crankshaft sprocket, the cam and the groove must align (2).

  20. Install the crankshaft sprocket (1).
    21. Fig 8: Aligning Timing Belt Drive Gear And Oil Pump Housing
    GM2027014Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The crankshaft sprocket and oil pump housing must align.

  21. Set the crankshaft in the direction of engine rotation to TDC. Use the crankshaft balancer bolt.
    22. Fig 9: Timing Belt Tensioner
    GM2027017Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  22. Install the timing belt tensioner (2) and tighten the NEW timing belt tensioner bolt (1) in three passes use the EN-45059  meter :
    1. First pass tighten to 20 (15 lb ft).
    2. Second pass to 120 degrees.
    3. Third pass to 15 degrees.
    23. Fig 10: Timing Belt Idler Pulley Bolt
    GM2026843Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  23. Install the timing belt idler pulley (2) and tighten the NEW bolt (1) in three passes use the EN-45059  meter :
    1. First pass tighten to 20 (15 lb ft).
    2. Second pass to 120 degrees.
    3. Third pass to 15 degrees.
    24. Fig 11: Drive Belt
    GM2512747Courtesy of GENERAL MOTORS COMPANY
  24. Install the timing belt (1).
  25. Guide the timing belt past the tensioner and place it on the crankshaft sprocket wheel.
  26. Place the timing belt on the exhaust and intake camshaft position actuator adjusters.
    27. Fig 12: Drive Belt Tensioner, Allen Key And Locking Pin
    GM1937014Courtesy of GENERAL MOTORS COMPANY
  27. Apply tension to the timing belt tensioner (2) in the direction of the arrow, using an allen key (1).
  28. Remove the EN-6333  pin (3).
    29. NOTE:

    The timing belt tensioner moves automatically to the correct position.

  29. Release tension on timing belt tensioner.
  30. Lower the vehicle.
    31. Fig 13: Engine Mount Bracket And Bolts
    GM2699324Courtesy of GENERAL MOTORS COMPANY
  31. Install the engine mount bracket (2).
  32. Install the 3 engine mount bracket bolts (1) tighten to 62 (46 lb ft).
    33. Fig 14: Engine Mount And Bolts
    GM2699323Courtesy of GENERAL MOTORS COMPANY
  33. Install the engine mount (4).
  34. Install the 2 engine mount bolts (1) and tighten to 62 (46 lb ft).
    35. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  35. Install the 3 engine mount bolts (2) and tighten in three passes use the EN-45059  meter.
    1. First pass tighten to 50 (37 lb ft).
    2. Second pass to 60 degrees.
    3. Third pass to 15 degrees.
  36. Unsupport the engine.
  37. Remove EN-6340  locking tool.
    38. Fig 15: Spot Type Markings And Special Tool
    GM2373398Courtesy of GENERAL MOTORS COMPANY
  38. Check the timing
      NOTE:

      Note the marking at the camshaft sprockets.

    • Turn the crankshaft 720 degrees in the direction of engine rotation by the bolt on the crankshaft balancer.
      • NOTE:

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

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

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

    • Install EN-6340  locking tool - right (2) into the camshaft adjusters as shown.
    • Raise the vehicle.
    39. Fig 16: Aligning Timing Belt Drive Gear And Oil Pump Housing
    GM2027014Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The crankshaft sprocket and oil pump housing must align.

  39. Check the crankshaft position.
    40. Fig 17: Timing Belt Lower Front Cover
    GM2026840Courtesy of GENERAL MOTORS COMPANY
  40. Install the lower timing belt cover (1).
    41. CAUTION:

    Refer to Fastener Caution .

  41. Install the 4 lower timing belt cover bolts (2) and tighten to 6 (53 lb in).
  42. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement (Manual Transmission) , Crankshaft Balancer Replacement (Automatic Transmission) .
  43. Lower the vehicle.
  44. Remove the EN-6340  locking tool.
  45. Install the camshaft position actuator solenoid valve. Refer to Camshaft Position Actuator Solenoid Valve Replacement .
  46. Install the 2 camshaft position sensors. Refer to Camshaft Position Sensor Replacement .
  47. Install the camshaft cover. Refer to Camshaft Cover Replacement .
    48. Fig 18: Timing Belt Upper Front Cover
    GM2027572Courtesy of GENERAL MOTORS COMPANY
  48. Install the timing belt upper front cover (1).
  49. Install the 2 timing belt upper front cover bolts (2) and tighten to 6 (53 lb in).
  50. Install the exhaust manifold. Refer to Exhaust Manifold Replacement (LUW) .
    51. Fig 19: Radiator Inlet Hose And Clamp
    GM2652379Courtesy of GENERAL MOTORS COMPANY
  51. Install the radiator inlet hose (3) with the radiator inlet hose clamp (2) to the engine coolant thermostat (1).
  52. Install the heater inlet hose to the engine coolant thermostat housing. Refer to Heater Inlet Hose Replacement (LUJ) , Heater Inlet Hose Replacement (LUW) .
  53. Install the heater outlet hose to the engine coolant thermostat housing. Refer to Heater Outlet Hose Replacement (LUJ) , Heater Outlet Hose Replacement (LUW) .
    54. Fig 20: Thermostat Housing Bracket, Bolts And Wiring Harness
    GM2699491Courtesy of GENERAL MOTORS COMPANY
  54. Install the engine coolant thermostat housing bracket (2).
  55. Install the engine coolant thermostat housing bracket nut (3) and tighten to 6 (53 lb in).
  56. Connect the thermostat wiring harness plug (1).
  57. Install the intake manifold. Refer to Intake Manifold Replacement .
  58. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  59. Fill engine oil. Refer to Engine Mechanical Specifications .
  60. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  61. Fill the cooling system. Refer to Cooling System Draining and Filling (GE-47716 Fill) , Cooling System Draining and Filling (Static Fill) .
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