Aura, Outlook 2007

Camshaft, Bearings & Lifters

Print

Inspection



2.4L Engine
  1. Inspect the camshaft for the following:
    1. Inspect the camshaft journals and lobes for wear or scoring.
    2.  
    3. Inspect the camshaft sprocket alignment notch for damage.
    4.  
    5. Inspect the camshaft cover for damage or loose oil control baffles.
    6.  
    7. Clean the camshaft cover.
    8.  
    9. Wash the camshaft in solvent.
    10.  
    11. Oil the camshaft.
    12.  
    13. Inspect the camshaft cover for cracks or other signs of damage.
    14.  

  2.  

3.5L Engine
  1. Inspect the camshaft for the following:
    1. Scored camshaft bearing journals. 
    2.  
    3. Damaged camshaft lobes.
    4.  
    5. Damaged camshaft position sensor reluctor area. 
    6.  
    7. Damaged threads. 
    8.  
    9. Measure the camshaft journals using a micrometer. If the camshaft journals are not within specifications, replace the camshaft. The journals diameter should be 2.024-2.025 in. and the out of round is 0.001 in.
    10.  
    11. Mount the camshaft in V-blocks between the centers.
    12.  
    13. Use a dial indicator in order to measure the intermediate camshaft journal.
    14.  
    15. Lubricate the camshaft using molylube.
    16.  
    17. Use dial indicator in order to measure the lobe lift. The lobe lift should be 0.2727 in.
    18.  
    19. If the runout or lobe lift is not within specifications, replace the camshaft
    20.  

  2.  

3.6L Engine
  1. Clean the camshaft in solvent.
  2.  
  3. Dry the camshaft with compressed air.
  4.  
  5. Inspect the camshaft oil feed holes to the camshaft position actuator for dirt, debris or blockage.
  6.  
  7. Inspect the threaded hole for damage.
  8.  
  9. Inspect the camshaft position actuator locating notch for damage or wear.
  10.  
  11. Inspect the camshaft sealing grooves for damage.
  12.  
  13. Inspect the camshaft thrust surface for damage.
  14.  
  15. Inspect the camshaft lobes and journals for excessive scoring or pitting, discoloration from overheating and deformation from excessive wear, especially the camshaft lobes.
  16.  
  17. If any of the above conditions exist on the camshaft, replace the camshaft.
  18.  
  19. With the camshaft in a suitable fixture, measure the camshaft for wear as follows:
    1. Measure the camshaft journals for diameter and out-of-round using an outside micrometer.

      Camshaft Bearing Inside Diameter - Front Number 1: 1.3779-1.3787 in.
       
      Camshaft Bearing Inside Diameter - Middle and Rear Number 2-4: 1.0630-1.0638 in.
       
      Camshaft Journal Diameter - Front Number 1: 1.3754-1.3764 in.
       
      Camshaft Journal Diameter - Middle and Rear Number 2-4: 1.0605-1.0614 in.
       
      Camshaft Journal Out-of-Round: 0.0002 in.
       

    2.  
    3. If the camshaft measurements do not meet specifications, replace the camshaft.
    4.  
    5. Measure the camshaft runout using a dial indicator. The front and rear numbers 1 and 4 should be 0.0010 in. and the middle 2 and 3 should be 0.0020 in.
    6.  

  20.  

Removal & Installation



2.4L Engine
Exhaust Camshaft
  1. Remove the exhaust camshaft position actuator as follows:
    1. Remove the camshaft cover.
      NOTE
      Ensure that the timing chain and the camshaft position actuators are marked for proper assembly.

    2.  
    3. Mark the intake and exhaust camshaft actuators and the respective locations on the timing chain.
    4.  
    5. Remove the upper timing chain guide bolts and guide.
    6.  
    7. Remove the timing chain tensioner.
    8.  
    9. Install a 24 mm wrench onto the hex on the camshaft in order to hold the camshaft.
    10.  
    11. Loosen, but DO NOT remove the exhaust camshaft actuator bolt.
      NOTE
      Make sure that the tips of a Timing Chain Tensioner Tool such as J 44217 are fully engaged into the timing chain.



      Click image to see an enlarged view

      Fig. Make sure that the tips of a Timing Chain Tensioner Tool such as J 44217 are fully engaged into the timing chain-2.4L engine



      Click image to see an enlarged view

      Fig. Install the tools (1) from a Timing Chain Tensioner Tool such as J 44217 to the exhaust camshaft side of the timing chain assembly in order to retain the timing chain-2.4L engine

    12.  
    13. Install one of the tools from a Timing Chain Tensioner Tool such as J 44217 to the exhaust camshaft side of the timing chain assembly in order to retain the timing chain. Firmly tighten the nuts.
      NOTE
      Ensure that the tips from a Timing Chain Tensioner Tool such as J 44217 are fully engaged into the timing chain.

    14.  
    15. Install one of the tools from a Timing Chain Tensioner Tool such as J 44217 to the intake camshaft side of the timing chain assembly in order to retain the timing chain. Firmly tighten the nuts.
    16.  
    17. Ensure that the timing chain and the camshaft position actuators are marked for proper assembly.
    18.  
    19. Install a 24 mm wrench onto the hex on the camshaft in order to hold the camshaft.
    20.  
    21. Remove and discard the exhaust camshaft actuator bolt.
    22.  
    23. Remove the exhaust camshaft actuator from the camshaft while also removing the actuator from the timing chain.
      NOTE
      Remove each bolt on each cap one turn at a time until there is no spring tension pushing on the camshaft.

    24.  

  2.  
  3. Mark the bearing caps to ensure they are installed in the original position.
  4.  
  5. Remove the bearing cap bolts.
  6.  
  7. Remove the bearing caps.
  8.  
  9. Remove the exhaust camshaft.
    NOTE
    Keep all of the roller followers and hydraulic adjusters in order so that they can be reinstalled in their respective locations.

  10.  
  11. Remove the camshaft roller followers.
  12.  
  13. Remove the hydraulic element lash adjusters.
  14.  

To install:

  1. Install the hydraulic element lash adjusters into their bores in the cylinder head.
  2.  
  3. Lubricate the hydraulic lash adjusters with molylube.

    Click image to see an enlarged view

    Fig. Lubricate the hydraulic lash adjusters-2.4L engine

  4.  
  5. Lubricate the valve tips with GM molylube.
    NOTE
    Used roller followers MUST be returned to their original position on the camshaft. If the camshaft is being replaced, the roller followers actuated by the camshaft must also be replaced.

  6.  
  7. Position the camshaft roller followers on the tip of the valve stem and on the lash adjuster. Lubricate the roller followers with molylube.
  8.  
  9. Install the exhaust camshaft and lubricate with molylube.
  10.  
  11. Install the camshaft bearing caps. Hand tighten the cap bolts.
  12.  
  13. Tighten the bearing cap bolts in increments of 3 turns until they are seated to 89 in. lbs. (10 Nm).
  14.  
  15. Install the exhaust camshaft position actuator as follows:
    NOTE
    Ensure that the alignment mark made previously on the intake camshaft actuator is still aligned properly with the mark on the timing chain.

    1. Install the timing chain onto the exhaust camshaft actuator.
    2.  
    3. Align the intake camshaft actuator alignment mark made previously with the timing chain mark and install the actuator onto the camshaft.
    4.  
    5. Install a NEW intake camshaft actuator bolt until snug.
    6.  
    7. Remove the tool from the intake camshaft side of the timing chain assembly.
    8.  
    9. Remove the tool from the exhaust camshaft side of the timing chain assembly.
    10.  
    11. Install a 24 mm wrench onto the hex on the camshaft in order to hold the camshaft.
    12.  
    13. Tighten the NEW camshaft actuator bolt to 63 ft. lbs. (85 Nm) plus an additional 30 degrees.
    14.  
    15. Remove the old oil from the timing chain tensioner.
    16.  
    17. Inspect the timing chain tensioner for scoring or free movement.
    18.  
    19. Inspect the timing chain washer and O-ring for damage. If damaged, replace the timing chain tensioner.
    20.  
    21. Measure the timing chain tensioner assembly from end to end. A NEW tensioner should be supplied in the fully compressed non-active state. A tensioner in the compressed state will measure 2.83 in. (72 mm) from end to end (a). A tensioner in the active state will measure 3.35 in. (85 mm) from end to end (a).

      Click image to see an enlarged view

      Fig. Measure the timing chain tensioner assembly from end to end. A NEW tensioner should be supplied in the fully compressed non-active state. A tensioner in the compressed state will measure 2.83 in. (72 mm) from end to end (a). A tensioner in the active state will measure 3.35 in. (85 mm) from end to end (a)-2.4L engine

    22.  
    23. If the timing chain tensioner is not in the compressed state, perform the following:

      Remove the piston assembly from the body of the timing chain tensioner by pulling it out.
       
      Install a timing chain tensioner tool such as J 45027-2 into a vise
       
      Install the notch end of the piston assembly into the tool
       
      Using the tool, turn the ratchet cylinder into the piston
       

    24.  
    25. Inspect the bore of the tensioner body for dirt, debris, and damage. If any damage appears, replace the tensioner. Clean dirt or debris with a lint free cloth.
    26.  
    27. Install the compressed piston assembly back into the timing chain tensioner body until the assembly stops at the bottom of the bore. Do not compress the piston assembly against the bottom of the bore. If the piston assembly is compressed against the bottom of the bore, the assembly will activate the tensioner, which will then need to be reset again.
    28.  
    29. At the point the tension should measure approximately 2.83 in. (72 mm) from end to end. If the tensioner does not measure2.83 in. (72 mm) repeat the steps using the timing chain tensioner tool.
    30.  
    31. Ensure that all dirt and debris is removed from the timing chain tensioner threaded hole in the cylinder head.
    32.  
    33. Install the timing chain tensioner and tighten to 66 ft. lbs. (75 Nm).
    34.  
    35. The timing chain tensioner is released by compressing the tensioner 0.079 in. (2 mm) which will release the locking mechanism in the ratchet. To release the timing chain tensioner, use a suitable tool with a rubber tip on the end. Feed the tool down through the cam chest to rest on the timing chain, then give a sharp jolt diagonally downwards to release the tensioner.
    36.  
    37. Install the upper timing chain guide and bolts. Tighten to 89 in. lbs. (10 Nm).
    38.  
    39. Install the camshaft cover.
    40.  

  16.  

Intake Camshaft
  1. Remove the intake camshaft position actuator as follows:
    1. Remove the camshaft cover.
    2.  
    3. Remove the upper timing chain guide bolts and guide.
    4.  
    5. Install a 24 mm wrench onto the hex on the camshaft in order to hold the camshaft.
    6.  
    7. Loosen, but DO NOT remove the intake camshaft actuator bolt.
      NOTE
      Make sure that the tips of a Timing Chain Tensioner Tool such as J 44217 are fully engaged into the timing chain.



      Click image to see an enlarged view

      Fig. Make sure that the tips of a Timing Chain Tensioner Tool such as J 44217 are fully engaged into the timing chain-2.4L engine



      Click image to see an enlarged view

      Fig. Install the tools (1) from a Timing Chain Tensioner Tool such as J 44217 to the exhaust camshaft side of the timing chain assembly in order to retain the timing chain-2.4L engine

    8.  
    9. Install one of the tools from a Timing Chain Tensioner Tool such as J 44217 to the exhaust camshaft side of the timing chain assembly in order to retain the timing chain. Firmly tighten the nuts.
      NOTE
      Ensure that the tips from a Timing Chain Tensioner Tool such as J 44217 are fully engaged into the timing chain.

    10.  
    11. Install one of the tools from a Timing Chain Tensioner Tool such as J 44217 to the intake camshaft side of the timing chain assembly in order to retain the timing chain. Firmly tighten the nuts.
    12.  
    13. Ensure that the timing chain and the camshaft position actuators are marked for proper assembly.
    14.  
    15. Mark the intake and exhaust camshaft actuators and the respective locations on the timing chain.
    16.  
    17. Install a 24 mm wrench onto the hex on the camshaft in order to hold the camshaft.
    18.  
    19. Remove and discard the intake camshaft actuator bolt.
    20.  
    21. Remove the intake camshaft actuator) from the camshaft while also removing the actuator from the timing chain.
      NOTE
      Remove each bolt on each cap one turn at a time until there is no spring tension pushing on the camshaft.

    22.  

  2.  
  3. Mark the bearing caps to ensure they are installed in the original position.
  4.  
  5. Remove the bearing cap bolts.
  6.  
  7. Remove the bearing caps.
  8.  
  9. Remove the intake camshaft.
    NOTE
    Keep all of the roller followers and hydraulic adjusters in order so that they can be reinstalled in their respective locations.

  10.  
  11. Remove the camshaft roller followers.
  12.  
  13. Remove the hydraulic element lash adjusters.
  14.  

To install:

  1. Install the hydraulic element lash adjusters into their bores in the cylinder head.
  2.  
  3. Lubricate the hydraulic lash adjusters with molylube.

    Click image to see an enlarged view

    Fig. Lubricate the hydraulic lash adjusters-2.4L engine

  4.  
  5. Lubricate the valve tips with GM molylube.
    NOTE
    Used roller followers MUST be returned to their original position on the camshaft. If the camshaft is being replaced, the roller followers actuated by the camshaft must also be replaced.

  6.  
  7. Position the camshaft roller followers on the tip of the valve stem and on the lash adjuster. Lubricate the roller followers with molylube.
  8.  
  9. Install the intake camshaft and lubricate with molylube.
  10.  
  11. Install the camshaft bearing caps. Hand tighten the cap bolts.
  12.  
  13. Tighten the bearing cap bolts in increments of 3 turns until they are seated to 89 in. lbs. (10 Nm).
  14.  
  15. Install the intake camshaft position actuator as follows:
    NOTE
    Ensure that the alignment mark made previously on the exhaust camshaft actuator is still aligned properly with the mark on the timing chain.

    1. Install the timing chain onto the intake camshaft actuator.
    2.  
    3. Align the intake camshaft actuator alignment mark made previously with the timing chain mark and install the actuator onto the camshaft.
    4.  
    5. Install a NEW intake camshaft actuator bolt until snug.
    6.  
    7. Remove the tool from the intake camshaft side of the timing chain assembly.
    8.  
    9. Remove the tool from the exhaust camshaft side of the timing chain assembly.
    10.  
    11. Install a 24 mm wrench onto the hex on the camshaft in order to hold the camshaft.
    12.  
    13. Tighten the NEW camshaft actuator bolt to 63 ft. lbs. (85 Nm) plus an additional 30 degrees.
    14.  
    15. Install the upper timing chain guide and bolts. Tighten the bolts to 89 in. lbs. (10 Nm).
    16.  
    17. Install the camshaft cover.
    18.  

  16.  

3.5L Engine
  1. Remove the camshaft position sensor bolt.
  2.  
  3. Remove the camshaft position sensor.
  4.  
  5. Remove the camshaft thrust plate screws.
  6.  
  7. Remove the camshaft thrust plate.
    NOTE
    All camshaft journals are the same diameter, so care must be used in removing or installing the camshaft to avoid damage to the camshaft bearings.

  8.  
  9. Install a camshaft sprocket bolt into the camshaft. Tighten finger tight only.
  10.  
  11. Carefully rotate and remove the camshaft from the engine block.
  12.  

To install:

  1. Coat the camshaft journals with clean engine oil.
  2.  
  3. Coat the camshaft lobes with prelube.
  4.  
  5. Install a camshaft sprocket bolt into the camshaft. Tighten finger tight only.
  6.  
  7. Carefully rotate the camshaft while installing the camshaft into the camshaft bearings.
  8.  
  9. Install the camshaft thrust plate.
  10.  
  11. Install the camshaft thrust plate screws. Tighten to 89 in. lbs. (10 Nm).
  12.  
  13. Install the camshaft position sensor.
  14.  
  15. Install the camshaft position sensor bolt. Tighten to 89 in. lbs. (10 Nm).
  16.  

3.6L Engine
Left Side
  1. Remove the lower intake manifold.
  2.  
  3. Remove the left bank camshaft cover.
  4.  
  5. Remove the camshaft sensors.
  6.  
  7. Remove the camshaft position actuator solenoid.
  8.  
  9. Remove the crankshaft balancer.

    Click image to see an enlarged view

    Fig. Rotate the crankshaft with a camshaft rotation socket such as EN 46111 until the camshafts are in a neutral (low tension) position. The camshaft flats will be parallel with the camshaft cover rail (1)-3.6L engine

  10.  
  11. Rotate the crankshaft with camshaft rotation socket such as EN 46111 until the camshafts are in a neutral (low tension) position. The camshaft flats will be parallel with the camshaft cover rail.
  12.  
  13. Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation. DO NOT remove the camshaft position actuator bolt at this time.
  14.  
  15. Loosen the camshaft position actuator bolt.
  16.  
  17. Make sure that the tips of a timing chain tensioner tool such as EN 46108 are fully engaged into the timing chain.
  18.  
  19. Install a timing chain tensioner tool such as EN 46108 in order to retain the timing chain. Firmly tighten the tool nuts.
    NOTE
    Ensure that the camshaft timing chain and the camshaft position actuators are marked for proper assembly.



    Click image to see an enlarged view

    Fig. Install a timing chain tensioner tool such as EN 46108 (1 and 2) in order to retain the timing chain-left side 3.6L engine



    Click image to see an enlarged view

    Fig. Install a timing chain tensioner tool such as EN 46108 (1 and 2) in order to retain the timing chain-Left side 3.6L engine



    Click image to see an enlarged view

    Fig. Install a timing chain tensioner tool such as EN 46108 (1 and 2) in order to retain the timing chain-Left side 3.6L engine

  20.  
  21. Mark the timing chain and the respective locations on camshaft position actuators (1-4).
  22.  
  23. Remove the camshaft position actuator bolt.
  24.  
  25. Remove the camshaft bearing caps and the camshaft.
  26.  

To install:

Click image to see an enlarged view

Fig. Ensure that the marks on the camshaft position actuator and the timing chain (1-4) are aligned-Left side 3.6L engine

  1. Ensure that the marks on the camshaft position actuator and the timing chain (1-4) are aligned. DO NOT tighten the camshaft position actuator bolt at this time
  2.  
  3. Locate the camshafts to the cylinder head and assemble the camshaft actuators to the camshafts.
  4.  
  5. Install the camshafts and the camshaft bearing caps as follows:
    1. Ensure that the crankshaft is in the stage one timing drive assembly position using a crankshaft rotation socket such as EN 46111 .

      Click image to see an enlarged view

      Fig. Ensure that the crankshaft is in the stage one timing drive assembly position using a crankshaft rotation socket such as EN 46111-Left side 3.6L engine



      Click image to see an enlarged view

      Fig. Ensure that the camshaft sealing rings (1) are in place in the camshaft grooves. Camshaft sealing rings must be in place below the surface of the camshaft journal in order to avoid being pinched between the cylinder head and the camshaft caps-Left side 3.6L engine

    2.  
    3. Ensure that the camshaft sealing rings are in place in the camshaft grooves. Camshaft sealing rings must be in place below the surface of the camshaft journal in order to avoid being pinched between the cylinder head and the camshaft caps.

      Click image to see an enlarged view

      Fig. Select the proper camshaft for the particular installation location-Left side 3.6L engine

    4.  
    5. Select the proper camshaft for the particular installation location. The ring placement is defined as follows:

      The number 4 identification ring for the left intake camshaft is machined off (1) - Third Design, Camshaft Timing Drive System.
       
      The number 5 identification ring for the left exhaust camshaft is machined off (2) - Third Design, Fourth, except High Output, Camshaft Timing Drive System.
       
      The number 3 and 4 identification rings for the left intake camshaft is machined off (3) - Fourth Design, Camshaft Timing Drive System.
       
      The number 1, 2 and 3 identification rings for the left exhaust camshaft is machined off (4) - Fourth Design High Output, Camshaft Timing Drive System.
       

    6.  
    7. Apply a liberal amount of lubricant to the camshaft journals and the right cylinder head camshaft carriers.
    8.  
    9. Place the left intake and left exhaust camshafts in position in the left cylinder head.
    10.  
    11. Position the camshaft lobes in a neutral position with the flats on the back of the camshafts up and parallel with the right cylinder head camshaft cover rail.

      Click image to see an enlarged view

      Fig. Position the camshaft lobes in a neutral position with the flats on the back of the camshafts up and parallel with the left cylinder head camshaft cover rail (1)-left side 3.6L engine

    12.  
    13. Observe the markings on the left cylinder head camshaft bearing caps. Each bearing cap is marked in order to identify its location. The markings have the following meanings:

      The raised feature must always be oriented toward the center of the cylinder head.
       
      The I indicates the intake camshaft
       
      The E indicates the exhaust camshaft
       
      The number 2, 4, 6 indicates the cylinder position from the front of the engine
       

    14.  
    15. Apply a liberal amount of lubricant to the camshaft bearing caps.
    16.  
    17. Install the camshaft bearing thrust caps in the first journal of the left cylinder head.
    18.  
    19. Install the remaining bearing caps with their orientation mark toward the center of the cylinder head.
    20.  
    21. Hand start all the camshaft bearing cap bolts.

      Click image to see an enlarged view

      Fig. Left side camshaft bearing caps torque sequence-3.6L engine

    22.  
    23. Tighten the camshaft bearing cap bolts in the sequence shown to 89 in. lbs. (10 Nm).
    24.  
    25. Loosen the center intake camshaft bearing cap bolts (1, 2) and the center exhaust camshaft bearing cap bolts (3, 4). Retighten the center camshaft bearing cap bolts (1, 2, 3, 4) to 89 in. lbs. (10 Nm).
    26.  
    27. Remove the timing chain retention tool.
    28.  
    29. Install the crankshaft balancer.
      NOTE
      Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.

    30.  

  6.  
  7. Install and tighten the camshaft position actuators.
  8.  
  9. Install the intake camshaft position actuator solenoid.
  10.  
  11. Install the camshaft sensors.
  12.  
  13. Install the camshaft cover.
  14.  
  15. Install the lower intake manifold.
  16.  

Right Side
  1. Remove the lower intake manifold.
  2.  
  3. Remove the camshaft cover.
  4.  
  5. Remove the camshaft sensors.
  6.  
  7. Remove the intake camshaft position actuator solenoid.
  8.  
  9. Remove the crankshaft balancer.

    Click image to see an enlarged view

    Fig. Rotate the crankshaft with a camshaft rotation socket such as EN 46111 until the camshafts are in a neutral (low tension) position. The camshaft flats will be parallel with the camshaft cover rail (1)-Right side 3.6L engine



    Click image to see an enlarged view

    Fig. Make sure that the tips of a timing chain tensioner tool such as EN 46108 are fully engaged into the timing chain (3 and 4). Install a timing chain tensioner tool such as EN 46108 (1 and 2) in order to retain the timing chain-Rights side 3.6L engine

  10.  
  11. Rotate the crankshaft with a camshaft rotation socket such as EN 46111 until the camshafts are in a neutral (low tension) position. The camshaft flats will be parallel with the camshaft cover rail.
  12.  
  13. Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation. DO NOT remove the camshaft position actuator bolt at this time.
  14.  
  15. Loosen the camshaft position actuator bolt.
  16.  
  17. Make sure that the tips of a timing chain tensioner tool such as EN 46108 are fully engaged into the timing chain.
  18.  
  19. Install a timing chain tensioner tool such as EN 46108 in order to retain the timing chain. Firmly tighten the tool nuts.
    NOTE
    Ensure that the camshaft timing chain and the camshaft position actuators are marked for proper assembly.



    Click image to see an enlarged view

    Fig. Mark the timing chain and the respective locations on camshaft position actuators (15-18)-Right side 3.6L engine

  20.  
  21. Mark the timing chain and the respective locations on camshaft position actuators (15-18).
  22.  
  23. Remove the camshaft position actuator bolt.
  24.  
  25. Remove the camshaft bearing caps and the camshaft.
  26.  

To install:

Click image to see an enlarged view

Fig. Make sure that the marks on the camshaft position actuators and the timing chain (15-18) are aligned-Right side 3.6L engine

  1. Make sure that the marks on the camshaft position actuators and the timing chain (15-18) are aligned. DO NOT tighten the camshaft position actuator bolt at this time.
  2.  
  3. Locate the camshafts to the cylinder head and assemble the camshaft actuators to the camshafts.
  4.  
  5. Install the camshafts and the camshaft bearing caps as follows:
    1. Ensure that the crankshaft is in the stage one timing drive assembly position using a crankshaft rotation socket such as EN 46111 .

      Click image to see an enlarged view

      Fig. Ensure that the crankshaft is in the stage one timing drive assembly position using a crankshaft rotation socket such as EN 46111-Right side 3.6L engine



      Click image to see an enlarged view

      Fig. Ensure that the camshaft sealing rings (1) are in place in the camshaft grooves. Camshaft sealing rings must be in place below the surface of the camshaft journal in order to avoid being pinched between the cylinder head and the camshaft caps-Right side 3.6L engine

    2.  
    3. Ensure that the camshaft sealing rings are in place in the camshaft grooves. Camshaft sealing rings must be in place below the surface of the camshaft journal in order to avoid being pinched between the cylinder head and the camshaft caps.

      Click image to see an enlarged view

      Fig. Select the proper camshaft for the particular installation location-Right side 3.6L engine

    4.  
    5. Select the proper camshaft for the particular installation location. The ring placement is defined as follows:

      The number 2 identification ring for the right exhaust camshaft is machined off (1) - Third Design, Camshaft Timing Drive System.
       
      The number 3 identification ring for the right intake camshaft is machined off (2) - Third Design and Fourth, except High Output, Camshaft Timing Drive System.
       
      The number 2 and 5 identification rings for the right intake camshaft is machined off (3) - Fourth Design, Camshaft Timing Drive System.
       
      The number 1, 4 and 5 identification rings for the right exhaust camshaft is machined off (4) - Fourth Design High Output, Camshaft Timing Drive System.
       

    6.  
    7. Apply a liberal amount of lubricant to the camshaft journals and the right cylinder head camshaft carriers.
    8.  
    9. Place the right intake and right exhaust camshafts in position in the right cylinder head.
    10.  
    11. Position the camshaft lobes in a neutral position with the flats on the back of the camshafts up and parallel with the right cylinder head camshaft cover rail.

      Click image to see an enlarged view

      Fig. Position the camshaft lobes in a neutral position with the flats on the back of the camshafts up and parallel with the right cylinder head camshaft cover rail (1)-Right side 3.6L engine

    12.  
    13. Observe the markings on the right cylinder head camshaft bearing caps. Each bearing cap is marked in order to identify its location. The markings have the following meanings:

      The raised feature must always be oriented toward the center of the cylinder head.
       
      The I indicates the intake camshaft
       
      The E indicates the exhaust camshaft
       
      The number 1, 3, 5 indicates the cylinder position from the front of the engine
       

    14.  
    15. Apply a liberal amount of lubricant to the camshaft bearing caps.
    16.  
    17. Install the camshaft bearing thrust caps in the first journal of the right cylinder head.
    18.  
    19. Install the remaining bearing caps with their orientation mark toward the center of the cylinder head.
    20.  
    21. Hand start all the camshaft bearing cap bolts.

      Click image to see an enlarged view

      Fig. Right side camshaft bearing caps torque sequence-3.6L engine

    22.  
    23. Tighten the camshaft bearing cap bolts in the sequence shown to 89 in. lbs. (10 Nm).
    24.  
    25. Loosen the center intake camshaft bearing cap bolts (1, 2) and the center exhaust camshaft bearing cap bolts (3, 4). Retighten the center camshaft bearing cap bolts (1, 2, 3, 4) to 89 in. lbs. (10 Nm).
    26.  
    27. Remove the timing chain retention tool.
    28.  
    29. Install the crankshaft balancer.
      NOTE
      Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.

    30.  

  6.  
  7. Install and tighten the camshaft position actuators.
  8.  
  9. Install the intake camshaft position actuator solenoid.
  10.  
  11. Install the camshaft sensors.
  12.  
  13. Install the camshaft cover.
  14.  
  15. Install the lower intake manifold.
  16.  

 
label.common.footer.alt.autozoneLogo