Aztek, Rendezvous 2001-2005

Camshaft, Bearings & Lifters

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Bearing Replacement



  1. Select the expander assembly and driving washer.
  2.  
  3. Assemble the special tool J 33049.
  4.  
  5. Drive out the camshaft bearings with special tool J 33049.

    Click image to see an enlarged view

    Fig. The assembly of special tool J33049

  6.  

To install:

  1. Assemble special tool J 33049according to the manufacturer's instructions.
  2.  
  3. Notice: Severe engine damage may result if the oil holes are not correctly aligned.
  4.  
  5. Install the camshaft bearings in the following order:

    Index the camshaft bearing oil holes with the engine block oil passages.
     
    Place the bearing on special tool J 33049.
     
    Install the third camshaft bearing.
     
    Install the second camshaft bearing.
     
    Install the outer camshaft bearings.
     

  6.  
  7. Apply sealer GM P/N 12377901 (Canadian P/N 10953504) or the equivalent to the camshaft rear bearing hole plug.
  8.  
  9. Install the camshaft rear bearing hole plug.
  10.  

Inspection



3.4L & 3.5L Engines
  1. Remove and discard the camshaft position actuator filter
  2.  
  3. Clean the camshaft with cleaning solvent.
  4.  
  5. Inspect the camshaft for scored bearing journals, damaged lobes or damaged position sensor reluctor areas.
  6.  
  7. Measure the camshaft journals, lobes and run out using appropriate measuring devices. If the camshaft measurements are not within specifications, replace the camshaft.
  8.  
  9. Install a new camshaft position actuator filter.
  10.  
  11. Check for valve lifter face wear.
  12.  
  13. Check for excessive valve lifter clearance.
  14.  
  15. Clean the valve lifters in cleaning solvent.
    CAUTION
    Wear safety glasses in order to avoid eye damage.

  16.  
  17. Dry the valve lifters with compressed air.

    Click image to see an enlarged view

    Fig. Inspecting valve lifter

  18.  
  19. Inspect the valve lifters for the following:

    Bent or broken clip (1).
     
    Worn push rod socket (2).
     
    If the valve lifter shows wear, inspect the engine block lifter bores for wear or damage.
     
    Flat spots on the roller (4).
     
    Loose or damaged pin (5).
     
    Plugged oil hole (6).
     
    Worn or damaged roller bearing.
     
    The roller should rotate freely with no binding or roughness.
     

  20.  
  21. Inspect the valve lifter guides for the following:

    For cracks or damage.
     
    Excessive wear in the lifter mounting bores.
     

  22.  

Removal & Installation



3.4L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Relieve the fuel system pressure.
  4.  
  5. Remove or disconnect the following:
    WARNING
    When removing valvetrain components they must be marked for installation in their original location. When the camshaft is being replaced, the valve lifters must also be replaced.


    WARNING
    Avoid damaging the camshaft bearing surfaces.



    Engine assembly
     



    Right and left side valve covers
     
    Upper and lower intake manifold
     
    Rocker arm bolts, balls, rocker arms and pushrods
     
    Oil splash shield
     
    Lifter guide bolts and the guide
     
    Valve lifter(s) from the bores
     
    Crankshaft balancer and front cover
     
    Timing chain and sprockets
     
    Oil pump driven gear bolt and gear
     
    Camshaft thrust plate
     
    Camshaft, using a large screwdriver inserted in the bolt hole to carefully rotate and pull the camshaft out of the bearings
     

  6.  

To install:

  1. Coat the camshaft with Prelube.
  2.  
  3. Install or connect the following:

    Camshaft
     
    Camshaft thrust plate. Tighten the bolts to 89 inch lbs. (10 Nm).
     
    Oil pump driven gear. Tighten the bolt to 27 ft. lbs. (36 Nm).
     
    Timing chain and sprocket
     
    Camshaft thrust button and front cover
     
    Crankshaft balancer
     

  4.  
  5. Lubricate the bearing surfaces with Molykote®.
    NOTE
    Installation of a new camshaft or a wear pattern on the old valve lifter will require the replacement of the camshaft and lifters together. If camshaft replacement is not necessary, be sure to install the used valve lifters in their original position.

  6.  
  7. Install or connect the following:

    Lifters in their original locations
     
    Lifter guide. Tighten the guide bolts to 89 inch lbs. (10 Nm).
     
    Oil splash shield
     
    Pushrods, rocker arms, balls and bolts. Tighten the nuts to 89 inch lbs. (10 Nm) plus an additional 30 degree turn.
     
    Lower and upper intake manifold
     
    Right and left side valve covers
     
    Engine assembly
     
    Negative battery cable
     

  8.  
  9. Adjust the valves, as required. Start the engine and verify no oil leaks.
  10.  

3.6L Engine
Left Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the upper intake manifold with the lower intake manifold.
  4.  
  5. Disconnect the ignition coil electrical connectors.
  6.  
  7. Remove the wiring harness from the side of the camshaft cover by sliding the conduit down and outboard.
  8.  
  9. Remove the wiring conduit retainers from the camshaft cover by rotating the wiring harness conduit retainers counterclockwise.
    NOTE
    It is not necessary to disconnect the engine front cover electrical connectors.



    Click image to see an enlarged view

    Fig. Flywheel locking tool in place-3.6L engine

  10.  
  11. Remove the wiring harness from the front of the camshaft cover.
  12.  
  13. Reposition and secure the wiring harnesses away from the camshaft cover in order to provide clearance.
  14.  
  15. Remove the ignition coils.

    Click image to see an enlarged view

    Fig. Ignition coil removal-3.6L engine

  16.  
  17. Loosen the left engine strut bracket.
  18.  
  19. Loosen the left engine strut bracket-to-cylinder head bolts.
  20.  
  21. Remove the camshaft cover bolts and camshaft cover.
  22.  
  23. Remove and discard the camshaft cover seal and grommets. DO NOT reuse.
  24.  
  25. Remove the camshaft sensors.
  26.  
  27. Remove the camshaft position actuator solenoid.
  28.  
  29. Remove the crankshaft balancer.

    Click image to see an enlarged view

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

  30.  
  31. Rotate the crankshaft with the EN 46111 until the camshafts are in a neutral (low tension) position. The camshaft flats will be parallel with the camshaft cover rail.
    WARNING
    A wrench must be used on the hex of the camshaft when loosening or tightening in order to prevent component damage. Failure to prevent the torque reaction against the timing drive chain can lead to timing drive chain failure.


    WARNING
    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.

  32.  
  33. Loosen the camshaft position actuator bolt.
    NOTE
    Ensure that the tips of the EN 46108 are fully engaged into the timing chain.



    Click image to see an enlarged view

    Fig. Install the EN 46108 in order to retain the timing chain. Firmly tighten the EN 46108 nuts-3.6L engine

  34.  
  35. Install the EN 46108 in order to retain the timing chain. Firmly tighten the EN 46108 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 the camshaft position actuators-3.6L engine

  36.  
  37. Mark the timing chain and the respective locations on the camshaft position actuators.
  38.  
  39. Remove the camshaft position actuator bolt.
  40.  
  41. Remove the EN 46105-2 from the left camshafts.
  42.  
  43. Position the camshaft lobes in a neutral position.
  44.  
  45. Observe the markings on the 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 indicates the journal position from the front of the engine.
     

  46.  
  47. Remove the camshaft bearing cap bolts.
  48.  
  49. Remove the camshaft bearing caps.
  50.  
  51. Remove the camshafts.
  52.  
  53. Replace the camshaft bearing caps and bolts.
  54.  
  55. Remove the valve rocker arms, camshaft followers, from the left cylinder head.
    WARNING
    Do not stroke/cycle the stationary hydraulic lash adjuster plunger without oil in the lower pressure chamber. Do not allow the stationary hydraulic lash adjuster to tip over, plunger down, after the oil fill.

  56.  
  57. Remove the valve lifters, stationary hydraulic lash adjuster, (SHLAs) from the left cylinder head.
  58.  

To install:

Click image to see an enlarged view

Fig. Stationary hydraulic lash adjuster-3.6L engine

  1. Fill the stationary hydraulic lash adjuster (SHLA) with clean engine oil GM P/N 12378006 or equivalent. Take precautions to prevent scratching the pivot sphere area (1) of the SHLA.
  2.  
  3. Lubricate the SHLA bores in the cylinder head with clean engine oil GM P/N 12378006 or equivalent.
  4.  
  5. Install the SHLAs in the cylinder head.

    Click image to see an enlarged view

    Fig. Rocker arm-3.6L engine

  6.  
  7. Apply a liberal amount of lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the SHLA pivot spheres.
  8.  
  9. Apply a liberal amount of lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the pivot pocket (1), roller (2) and valve slot (3) areas of the camshaft followers.
    WARNING
    The follower must be positioned squarely on the valve tip so that the full width of the roller will completely contact the camshaft lobe. If the followers are being reused you must put them back in their original location.

  10.  
  11. Place the camshaft followers in position on the valve tip and stationary hydraulic lash adjuster (SHLA). The rounded head end of the follower goes on the SHLA while the flat end goes on the valve tip.
  12.  
  13. Clean the camshaft journals and carriers with a clean, lint-free cloth.
    NOTE
    Ensure that the marks on the camshaft position actuator and the timing chain are aligned. DO NOT tighten the camshaft position actuator bolt at this time.



    Click image to see an enlarged view

    Fig. CMP actuator-3.6L engine

  14.  
  15. Locate the camshafts to the cylinder head and assemble the camshaft actuators to the camshafts.

    Click image to see an enlarged view

    Fig. Ensure that the crankshaft is in the stage one timing drive assembly position using the EN 46111-3.6L engine

  16.  
  17. Ensure that the crankshaft is in the stage one timing drive assembly position using the EN 46111.

    Click image to see an enlarged view

    Fig. Ensure that the camshaft sealing rings are in place in the camshaft grooves-3.6L engine

  18.  
  19. Ensure that the camshaft sealing rings are in place in the camshaft grooves.
  20.  
  21. 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. The number 5 identification ring for the left exhaust camshaft is machined off.
  22.  
  23. Apply a liberal amount of lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the camshaft journals and the left cylinder head camshaft carriers.
  24.  
  25. Place the left intake and left exhaust camshafts in position in the left cylinder head.
  26.  
  27. 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.
  28.  
  29. 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.
     

  30.  
  31. Apply a liberal amount of lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the camshaft bearing caps.
  32.  
  33. Install the camshaft bearing thrust cap in the first journal of the left cylinder head.
  34.  
  35. Install the remaining bearing caps with their orientation mark toward the center of the cylinder head.
  36.  
  37. Hand start all the camshaft bearing cap bolts.

    Click image to see an enlarged view

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

  38.  
  39. Tighten the camshaft bearing cap bolts in the sequence shown to 89 inch lbs. (10 Nm).
  40.  
  41. Loosen the center intake camshaft bearing cap bolts 1, 2 and the center exhaust camshaft bearing cap bolts 3, 4.
  42.  
  43. Retighten the center camshaft bearing cap bolts 1, 2, 3, 4 to 89 inch lbs. (10 Nm).
  44.  
  45. Remove the EN 46108.
    WARNING
    Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.

  46.  
  47. Observe the body of the camshaft position actuator for the "IN" marking. The marking is for an intake camshaft position actuator.
  48.  
  49. Ensure the proper timing mark is used. Observe the outer ring of the camshaft position actuator for the "L" and circle marking. The marking is for alignment to the highlighted timing chain link on the left side of the engine.
  50.  
  51. Use an open wrench on the hex cast into the camshaft in order to prevent camshaft rotation when tightening the camshaft position actuator bolt.
  52.  
  53. Install the left intake camshaft position actuator.
  54.  
  55. Install the camshaft position actuator bolt. Tighten the camshaft position actuator bolt to 43 ft. lbs. (58 Nm).
  56.  
  57. Observe the body of the camshaft position actuator for the "EX" marking. The marking is for an exhaust camshaft position actuator.
  58.  
  59. Ensure the proper timing mark is used. Observe the outer ring of the camshaft position actuator for the "L" and circle marking. The marking is for alignment to the highlighted timing chain link on the left side of the engine.
  60.  
  61. Use an open wrench on the hex cast into the camshaft in order to prevent camshaft rotation when tightening the camshaft position actuator bolt.
  62.  
  63. Install the left exhaust camshaft position actuator.
  64.  
  65. Install the camshaft position actuator bolt. Tighten the camshaft position actuator bolt to 43 ft. lbs. (58 Nm).
  66.  
  67. Install the CMP actuator valve.
  68.  
  69. Install the CMP actuator valve bolt. Tighten the CMP actuator valve bolt to 89 inch lbs. (10 Nm).
  70.  
  71. Install the camshaft sensors. Torque to 89 inch lbs. (10 Nm).
    NOTE
    The EN 46106 must be installed onto the flywheel.

  72.  
  73. Use the J 41998-B, nut, bearing and washer to install the crankshaft balancer.
    NOTE
    Do not lubricate the crankshaft front oil seal or crankshaft balancer sealing surfaces. The crankshaft balancer is installed into a dry seal.

  74.  
  75. Apply lubricant to the inside of the crankshaft balancer hub bore.
  76.  
  77. Place the crankshaft balancer in position on the crankshaft.
  78.  
  79. Thread the J 41998-B in the crankshaft. Ensure you engage at least 10 threads of the J 41998-B before pressing the crankshaft balancer in place.
  80.  
  81. Push the crankshaft balancer into position by tightening the nut on the J 41998-B until the large washer bottoms out on the crankshaft end.
  82.  
  83. Remove the J 41998-B.
  84.  
  85. Install the crankshaft balancer bolt. Tighten the crankshaft balancer bolt to 74 ft. lbs. (100 Nm). Tighten the crankshaft balancer bolt an additional 150 degrees using the J 45059.
  86.  
  87. Remove the EN 46106.
  88.  
  89. Install a NEW camshaft cover seal and NEW grommets.
  90.  
  91. Remove the EN 46105-2 from the rear of the left camshafts.
  92.  
  93. Install the EN 46101 onto the spark plug tubes of the left cylinder head.
  94.  
  95. Install the camshaft cover bolt grommets prior to installing the camshaft cover bolts.
  96.  
  97. Wipe the camshaft cover sealing surface on the left cylinder head with a clean, lint-free cloth.
  98.  
  99. Place a bead 8mm (0.3150 in.) in diameter by 4mm (0.1575 in.) in height of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the engine front cover split lines.
  100.  
  101. Place the left camshaft cover into position onto the left cylinder head.

    Click image to see an enlarged view

    Fig. Place a bead 8mm (0.3150 in.) in diameter by 4mm (0.1575 in.) of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the engine front cover split lines-3.6L engine

  102.  
  103. Loosely install the left camshaft cover bolts.

    Click image to see an enlarged view

    Fig. Left camshaft cover torque sequence-3.6L engine

  104.  
  105. Tighten the left camshaft cover bolts in the sequence shown to 89 inch lbs. (10 Nm).
  106.  
  107. Remove the EN 46101 from the spark plug tubes of the left cylinder head.
  108.  
  109. Install the NEW spark plugs into the left cylinder head. Tighten the spark plugs to 15 ft. lbs. (20 Nm).
  110.  
  111. Install each ignition coil through the left camshaft cover into the spark plug tube taking care not to damage the spark plug and/or the seal in the left camshaft cover.
  112.  
  113. Install each ignition coil bolt. Tighten the ignition coil bolt to 89 inch lbs. (10 Nm).
  114.  
  115. Tighten the left engine strut bracket-to-cylinder head bolts to 37 ft. lbs. (50 Nm).
  116.  
  117. Install the ignition coils.
  118.  
  119. Install the wiring harness to the front of the camshaft cover.
  120.  
  121. Install the wiring harness conduit retainers to the wiring harness conduit.
  122.  
  123. Install the wiring harness to the side of the camshaft cover.
  124.  
  125. Connect the ignition coil electrical connectors.
  126.  
  127. Install the upper intake manifold with the lower intake manifold.
  128.  

Right Side
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the upper intake manifold with the lower intake manifold.
  4.  
  5. Disconnect the ignition coil electrical connectors.
  6.  
  7. Remove the wiring harness from the side of the camshaft cover by sliding the conduit down and outboard.
  8.  
  9. Remove the wiring conduit retainers from the camshaft cover by rotating the wiring harness conduit retainers counterclockwise.
    NOTE
    It is not necessary to disconnect the engine front cover electrical connectors.

  10.  
  11. Remove the wiring harness from the front of the camshaft cover.
  12.  
  13. Reposition and secure the wiring harnesses away from the camshaft cover in order to provide clearance.
  14.  
  15. Remove the ignition coils.
  16.  
  17. Remove the camshaft cover.
  18.  
  19. Remove and discard the camshaft cover seal and grommets.
  20.  
  21. Remove the camshaft sensors.
  22.  
  23. Remove the intake camshaft position actuator solenoid.
  24.  
  25. Remove the crankshaft balancer.
  26.  
  27. Rotate the crankshaft with the EN 46111 until the camshafts are in a neutral (low tension) position. The camshaft flats will be parallel with the camshaft cover rail.
    WARNING
    A wrench must be used on the hex of the camshaft when loosening or tightening in order to prevent component damage. Failure to prevent the torque reaction against the timing drive chain can lead to timing drive chain failure.


    NOTE
    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.

  28.  
  29. Loosen the camshaft position actuator bolt.
    NOTE
    Ensure that the tips of the EN 46108 are fully engaged into the timing chain.

  30.  
  31. Install the EN 46108 in order to retain the timing chain. Firmly tighten the EN 46108 nuts.
    NOTE
    Ensure that the camshaft timing chain and the camshaft position actuators are marked for proper assembly.

  32.  
  33. Mark the timing chain and the respective locations on camshaft position actuators.
  34.  
  35. Remove the camshaft position actuator bolt.
  36.  
  37. Remove the EN 46105-1 from the right camshafts.
  38.  
  39. Position the camshaft lobes in a neutral position.
  40.  
  41. Observe the markings on the bearing caps. Each bearing cap is marked in order to identify its location.
  42.  
  43. 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 indicates the journal position from the front of the engine.
     

  44.  
  45. Remove the camshaft bearing cap bolts.
  46.  
  47. Remove the camshaft bearing caps.
  48.  
  49. Remove the camshafts.
  50.  
  51. Replace the camshaft bearing caps and bolts.
    WARNING
    Do not stroke/cycle the stationary hydraulic lash adjuster plunger without oil in the lower pressure chamber. Do not allow the stationary hydraulic lash adjuster to tip over, plunger down, after the oil fill.

  52.  
  53. Remove the valve lifters, stationary hydraulic lash adjuster, (SHLAs) from the left cylinder head.
  54.  

To install:

  1. Fill the stationary hydraulic lash adjuster (SHLA) with clean engine oil GM P/N 12378006 or equivalent. Take precautions to prevent scratching the pivot sphere area (1) of the SHLA.
  2.  
  3. Lubricate the SHLA bores in the cylinder head with clean engine oil GM P/N 12378006 or equivalent.
  4.  
  5. Install the SHLAs in the cylinder head.
  6.  
  7. Apply a liberal amount of lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the SHLA pivot spheres.
  8.  
  9. Apply a liberal amount of lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the pivot pocket (1), roller (2) and valve slot (3) areas of the camshaft followers.
    WARNING
    The follower must be positioned squarely on the valve tip so that the full width of the roller will completely contact the camshaft lobe. If the followers are being reused you must put them back in their original location.

  10.  
  11. Place the camshaft followers in position on the valve tip and stationary hydraulic lash adjuster (SHLA). The rounded head end of the follower goes on the SHLA while the flat end goes on the valve tip.
  12.  
  13. Clean the camshaft journals and carriers with a clean, lint-free cloth.
    NOTE
    Ensure 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.

  14.  
  15. Locate the camshafts to the cylinder head and assemble the camshaft actuators to the camshafts.
  16.  
  17. Ensure that the crankshaft is in the stage one timing drive assembly position using the EN 46111.
  18.  
  19. Ensure that the camshaft sealing rings are in place in the camshaft grooves.
  20.  
  21. 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. The number 3 identification ring for the right intake camshaft is machined off.
  22.  
  23. Apply a liberal amount of lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the camshaft journals and the right cylinder head camshaft carriers. Place the right intake and right exhaust camshafts in position in the right cylinder head.

    Click image to see an enlarged view

    Fig. Camshaft cap markings-3.6L engine



    Click image to see an enlarged view

    Fig. Right side camshaft cap torque sequence-3.6L engine

  24.  
  25. 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. 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.
     

  26.  
  27. Apply a liberal amount of lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to the camshaft bearing caps.
  28.  
  29. Install the camshaft bearing thrust caps in the first journal of the right cylinder head.
  30.  
  31. Install the remaining bearing caps with their orientation mark toward the center of the cylinder head.
  32.  
  33. Hand start all the camshaft bearing cap bolts.
  34.  
  35. Tighten the camshaft bearing cap bolts in the sequence shown to 89 inch lbs. (10 Nm).
  36.  
  37. Loosen the center intake camshaft bearing cap bolts and the center exhaust camshaft bearing cap bolts.
  38.  
  39. Retighten the center camshaft bearing cap bolts to 89 inch lbs. (10 Nm).
  40.  
  41. Remove the EN 46108.
    NOTE
    The EN 46106 must be installed onto the flywheel.

  42.  
  43. Use the J 41998-B, nut, bearing and washer to install the crankshaft balancer.
    NOTE
    Do not lubricate the crankshaft front oil seal or crankshaft balancer sealing surfaces. The crankshaft balancer is installed into a dry seal.

  44.  
  45. Apply lubricant to the inside of the crankshaft balancer hub bore.
  46.  
  47. Place the crankshaft balancer in position on the crankshaft.
  48.  
  49. Thread the J 41998-B in the crankshaft. Ensure you engage at least 10 threads of the J 41998-B before pressing the crankshaft balancer in place.
  50.  
  51. Push the crankshaft balancer into position by tightening the nut on the J 41998-B until the large washer bottoms out on the crankshaft end.
  52.  
  53. Remove the J 41998-B.
  54.  
  55. Tighten the crankshaft balancer bolt to 74 ft. lbs. (100 Nm). Tighten the crankshaft balancer bolt an additional 150 degrees using the J 45059.
  56.  
  57. Remove the EN 46106.
    NOTE
    Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.

  58.  
  59. Observe the body of the camshaft position actuator for the "IN" marking. The marking is for an intake camshaft position actuator.
  60.  
  61. Ensure the proper timing mark is used. Observe the outer ring of the camshaft position actuator for the "R" and triangle marking. The marking is for alignment to the highlighted timing chain link on the right side of the engine.
  62.  
  63. Use an open wrench on the hex cast into the camshaft in order to prevent camshaft rotation when tightening the camshaft position actuator bolt.
  64.  
  65. Install the right intake camshaft position actuator.
  66.  
  67. Install the camshaft position actuator bolt. Tighten the camshaft position actuator bolt to 43 ft. lbs. (58 Nm).
  68.  
  69. Observe the body of the camshaft position actuator for the "EX" marking. The marking is for an exhaust camshaft position actuator.
  70.  
  71. Ensure the proper timing mark is used. Observe the outer ring of the camshaft position actuator for the "R" and triangle marking. The marking is for alignment to the highlighted timing chain link on the right side of the engine.
  72.  
  73. Use an open wrench on the hex cast into the camshaft in order to prevent camshaft rotation when tightening the camshaft position actuator bolt.
  74.  
  75. Install the right exhaust camshaft position actuator.
  76.  
  77. Install the camshaft position actuator bolt. Tighten the camshaft position actuator bolt to 43 ft. lbs. (58 Nm).
  78.  
  79. Install the CMP actuator valve.
  80.  
  81. Install the CMP actuator valve bolt. Tighten the CMP actuator valve bolt to 89 inch lbs. (10 Nm). Connect the CMP actuator valve electrical connector.
  82.  
  83. Install the power steering pressure hose bracket and nut as necessary.
  84.  
  85. Install the CMP sensor.
  86.  
  87. Install the CMP sensor bolt. Tighten the CMP sensor bolt to 89 inch lbs. (10 Nm).
  88.  
  89. Connect the CMP sensor electrical connector.
  90.  
  91. Install the power steering pressure hose as necessary.
  92.  
  93. Install a NEW camshaft cover seal and NEW grommets.
  94.  
  95. Remove the EN 46105-1 from the rear of the right camshafts.
  96.  
  97. Install the EN 46101 onto the spark plug tubes of the right cylinder head.
  98.  
  99. Install the camshaft cover bolt grommets prior to installing the camshaft cover bolts.
  100.  
  101. Wipe the camshaft cover sealing surface on the right cylinder head with a clean, lint-free cloth.

    Click image to see an enlarged view

    Fig. Place a bead 8mm (0.3150 in) in diameter by 4mm (0.1575 in) in height of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the engine front cover split lines



    Click image to see an enlarged view

    Fig. Right side camshaft cover torque sequence-3.6l engine

  102.  
  103. Place a bead 8mm (0.3150 in) in diameter by 4mm (0.1575 in) in height of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the engine front cover split lines (1).
  104.  
  105. Place the right camshaft cover into position onto the right cylinder head.
  106.  
  107. Loosely install the right camshaft cover bolts.
  108.  
  109. Tighten the right camshaft cover bolts in the sequence shown to 89 inch lbs. (10 Nm).
  110.  
  111. Remove the EN 46101 from the spark plug tubes of the right cylinder head.
  112.  
  113. Install the NEW spark plugs into the right cylinder head. Tighten the spark plugs to 15 ft. lbs. (20 Nm).
  114.  
  115. Install each ignition coil through the right camshaft cover into the spark plug tube taking care not to damage the spark plug and/or the seal in the right camshaft cover.
  116.  
  117. Install each ignition coil bolt. Tighten the ignition coil bolt to 89 inch lbs. (10 Nm).
  118.  
  119. Install the upper intake manifold with the lower intake manifold.
  120.  

 
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