CYLINDER HEAD (w/ Dual VVT-i) REMOVAL


  1. REMOVE MANUAL TRANSMISSION ASSEMBLY (for Manual Transmission)

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  2. REMOVE AUTOMATIC TRANSMISSION ASSEMBLY (for Automatic Transmission)

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  3. REMOVE CHAIN SUB-ASSEMBLY

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  4. REMOVE CAMSHAFT BEARING CAP


    1. B007TYVE02

      Uniformly loosen and remove the 20 bearing cap bolts in the sequence shown in the illustration.

      Note

      Uniformly loosen the bolts while keeping the camshafts level.

    2. B007Q78

      Remove the 9 bearing caps.

      Tech Tips

      Arrange the removed parts in the correct order.

  5. REMOVE CAMSHAFT


    1. B007RZB

      Remove the camshaft.

  6. REMOVE NO. 2 CAMSHAFT


    1. B007Q0T

      Remove the No. 2 camshaft.

  7. REMOVE NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY


    1. B007SN3E01
      Text in Illustration
      *1 No. 1 Valve Rocker Arm Sub-assembly
      *2 Valve Lash Adjuster Assembly
      *3 Valve Stem Cap

      Remove the 16 No. 1 valve rocker arm sub-assemblies from the cylinder head sub-assembly.

      Tech Tips

      Arrange the removed parts in the correct order.

  8. REMOVE VALVE LASH ADJUSTER ASSEMBLY


    1. Remove the 16 valve lash adjuster assemblies from the cylinder head sub-assembly.

      Tech Tips

      Arrange the removed parts in the correct order.

  9. REMOVE VALVE STEM CAP


    1. Remove the 16 valve stem caps from the cylinder head sub-assembly.

      Tech Tips

      Arrange the removed parts in the correct order.

  10. REMOVE CYLINDER HEAD SUB-ASSEMBLY


    1. B007RSJE04

      Uniformly loosen the 10 bolts in the sequence shown in the illustration. Remove the 10 cylinder head bolts and plate washers.

      Note


      • Be careful not to drop plate washers into the cylinder head sub-assembly.

      • Head warpage or cracking could result from removing bolts in the incorrect order.

    2. Remove the cylinder head sub-assembly.

  11. REMOVE CYLINDER HEAD GASKET

  12. INSPECT CYLINDER HEAD SET BOLT


    1. B007U04E03
      Text in Illustration
      *a Measuring area
      *b Distance

      Using a vernier caliper, measure the diameter of the most elongated threads in the measuring area.

      Standard outside diameter
      10.76 to 10.97 mm (0.424 to 0.432 in.)
      Minimum outside diameter
      10.40 mm (0.409 in.)
      Distance
      30 mm (1.18 in.)

      If a visual check reveals no excessively thin areas, check the center of the measuring area (see illustration) and find the area that has the smallest diameter.

      If the diameter is less than the minimum, replace the cylinder head set bolt.

  13. INSPECT CYLINDER HEAD SUB-ASSEMBLY


    1. B007W4ME02
      Text in Illustration
      *a Cylinder Block Side
      *b Intake Manifold Side
      *c Exhaust Manifold Side

      Using a precision straightedge and feeler gauge, measure the warpage of the contact surface of the cylinder block and manifolds.

      Maximum warpage
      0.05 mm (0.00197 in.)

      If the warpage is more than the maximum, replace the cylinder head sub-assembly.

    2. Using a dye penetrant, check the intake ports, exhaust ports and cylinder surface for cracks.

      If cracked, replace the cylinder head sub-assembly.