CYLINDER HEAD REASSEMBLY

PROCEDURE


  1. INSTALL STUD BOLT

    Note

    If a stud bolt is deformed or its threads are damaged, replace it.

    A0053I9E04

    1. Using an E8 "TORX" socket wrench, install the stud bolts.

      Torque:
      9.5 N*m  { 97 kgf*cm, 84 in.*lbf }

  2. INSTALL NO. 2 STRAIGHT SCREW PLUG

    Note

    If water leaks from the straight screw plug or the plug is corroded, replace it.

    A0053UU

    1. Using a 10 mm straight hexagon wrench, install 3 new gaskets and the 3 straight screw plugs.

      Torque:
      44 N*m  { 449 kgf*cm, 32 ft.*lbf }

  3. INSTALL VALVE SPRING SEAT


    1. Install the valve spring seats to the cylinder head.

  4. INSTALL VALVE STEM OIL SEAL


    1. A0058ZOE23
      *1 Intake Side:
      *2 Exhaust Side:
      *3 Gray
      *4 Black

      Apply a light coat of engine oil to a new oil seal.

      Note

      Pay close attention when installing the intake and exhaust oil seals. For example, installing the intake oil seal to the exhaust side or installing the exhaust oil seal to the intake side can cause installation problems later.

      Tech Tips

      The intake valve oil seal is gray and the exhaust valve oil seal is black.

    2. A0054MME01
      *1 CORRECT
      *2 INCORRECT

      Using SST, push on the oil seal.

      SST
      09201-41020

      Note

      Failure to use SST will cause the seal to be damaged or improperly seated.

  5. INSTALL INTAKE VALVE

    Tech Tips

    Type A and type B can be distinguished by the shape of the inner compression spring.

    A0054C9E04
    Type Shape of the Inner Compression Spring
    A Straight
    B Taper

    1. for Type A:


      1. Place the cylinder head on wooden blocks.

      2. A0058I6E03
        *1 30 mm or more

        Apply engine oil to each valve over an area 30 mm (1.18 in.) or more from its tip, as shown in the illustration.

      3. Install the valve, compression spring and spring retainer to the cylinder head.

        Note

        Install the same parts in the same combination to the original locations.

      4. A005719E02

        Using SST and wooden blocks, compress the spring and install the 2 retainer locks.

        SST
        09202-70020   ( 09202-00010 )
      5. A0053KR

        Using a plastic-faced hammer, lightly tap the valve stem tip to ensure a proper fit.

        Note


        • Be careful not to damage the valve stem tip.

        • Be careful not to damage the retainer.

    2. for Type B:


      1. Place the cylinder head on wooden blocks.

      2. A0058I6E03
        *1 30 mm or more

        Apply engine oil to each valve over an area 30 mm (1.18 in.) or more from its tip, as shown in the illustration.

      3. A0057OPE04
        *1 Narrow
        *2 Wide

        Install the valve, compression spring and spring retainer to the cylinder head.

        Note

        Install the same parts in the same combination to the original locations.

      4. A0058IKE01

        Using SST and wooden blocks, compress the spring and install the 2 retainer locks.

        SST
        09202-70020
        09202-00021
      5. A00544A

        Using a plastic-faced hammer, lightly tap the valve stem tip to ensure a proper fit.

        Note


        • Be careful not to damage the valve stem tip.

        • Be careful not to damage the retainer.

  6. INSTALL EXHAUST VALVE

    Tech Tips

    Type A and type B can be distinguished by the shape of the inner compression spring.

    A0054C9E04
    Type Shape of the Inner Compression Spring
    A Straight
    B Taper

    1. for Type A:


      1. Place the cylinder head on wooden blocks.

      2. A00569OE03
        *1 30 mm or more

        Apply engine oil to each valve over an area 30 mm (1.18 in.) or more from its tip, as shown in the illustration.

      3. Install the valve, compression spring and spring retainer to the cylinder head.

        Note

        Install the same parts in the same combination to the original locations.

      4. A0058V4E02

        Using SST and wooden blocks, compress the spring and install the 2 retainer locks.

        SST
        09202-70020   ( 09202-00010 )
      5. A0058U7

        Using a plastic-faced hammer, lightly tap the valve stem tip to ensure a proper fit.

        Note


        • Be careful not to damage the valve stem tip.

        • Be careful not to damage the retainer.

    2. for Type B:


      1. Place the cylinder head on wooden blocks.

      2. A00569OE03
        *1 30 mm or more

        Apply engine oil to each valve over an area 30 mm (1.18 in.) or more from its tip, as shown in the illustration.

      3. A0054Q1E04
        *1 Narrow
        *2 Wide

        Install the valve, compression spring and spring retainer to the cylinder head.

        Note

        Install the same parts in the same combination to the original locations.

      4. A0057RXE01

        Using SST and wooden blocks, compress the spring and install the 2 retainer locks.

        SST
        09202-70020
        09202-00021
      5. A005917

        Using a plastic-faced hammer, lightly tap the valve stem tip to ensure a proper fit.

        Note


        • Be careful not to damage the valve stem tip.

        • Be careful not to damage the retainer.