CYLINDER HEAD REASSEMBLY

Tech Tips


  • Select the No. 1 valve rocker arm sub-assemblies, inner compression springs and valve spring retainers based on the identification mark on the cylinder head.

    A01NCMKE01
    Text in Illustration
    *A Type A *B Type B
    *C Cylinder Head RH *D Cylinder Head LH
    *a Identification Mark - -
    Type Identification Mark Inner Compression Spring Shape
    A 1 Hole Straight
    B 2 Holes Taper
  • A01NH31E01

    There are 2 types of No. 1 valve rocker arm sub-assemblies, inner compression springs and valve spring retainers. The 2 types are not interchangeable.

    Text in Illustration
    *A Type A
    *B Type B
    *1 No. 1 Valve Rocker Arm Sub-assembly
    *2 Valve Spring Retainer
    *3 Inner Compression Spring
    *a Valve Spring Retainer Diameter
    *b No. 1 Valve Rocker Arm Sub-assembly Roller Width
    Type No. 1 Valve Rocker Arm Sub-assembly Roller Width Valve Spring Retainer Diameter Inner Compression Spring Shape
    A 10.7 mm (0.421 in.) 23.4 mm (0.921 in.) Straight
    B 8.0 mm (0.315 in.) 18.9 mm (0.744 in.) Taper

  1. INSTALL SPARK PLUG TUBE

    Tech Tips

    When using a new cylinder head, the spark plug tubes must be replaced.


    1. A01NDWME01

      Apply adhesive onto the shaded area of a new spark plug tube.

      Adhesive
      Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent.
      Standard application width
      1.0 to 3.0 mm (0.0394 to 0.118 in.)

      Note


      • Install the spark plug tube within 3 minutes after applying adhesive.

      • Be careful not to deform the spark plug tube.

      • Be careful not to expose the seal to engine oil for at least 1 hour after installing it.

    2. A01NDA5E02

      Using a wooden block and hammer, tap in the spark plug tube to the specified protrusion height.

      Standard protrusion height
      72.9 mm (2.87 in.)

      Note

      To avoid tapping in the spark plug tube too far, measure the protrusion height while tapping it.

  2. INSTALL NO. 1 STRAIGHT SCREW PLUG


    1. A01NERVE11

      Using a 10 mm hexagon wrench, install 4 new gaskets and the 4 No. 1 straight screw plugs.

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

  3. INSTALL NO. 2 STRAIGHT SCREW PLUG


    1. A01NEFPE10

      Using a 14 mm hexagon wrench, install 2 new gaskets and the 2 No. 2 straight screw plugs.

      Torque:
      80 N*m  { 816 kgf*cm, 59 ft.*lbf }

  4. INSTALL VALVE SPRING SEAT


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

  5. INSTALL VALVE STEM OIL SEAL


    1. A01NHLME04

      Apply a light coat of engine oil to new valve stem oil seals.

      Note

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

      Tech Tips

      The intake valve oil seals are gray and the exhaust valve oil seals are black.

    2. A01NF0UE02

      Using SST, push in the oil seals.

      SST
      09201-41020

      Note

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

  6. INSTALL EXHAUST VALVE

    Tech Tips

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

    A01NH31E01
    Text in Illustration
    *A Type A
    *B Type B
    *1 No. 1 Valve Rocker Arm Sub-assembly
    *2 Valve Spring Retainer
    *3 Inner Compression Spring
    *a Valve Spring Retainer Diameter
    *b No. 1 Valve Rocker Arm Sub-assembly Roller Width
    Type No. 1 Valve Rocker Arm Sub-assembly Roller Width Valve Spring Retainer Diameter Inner Compression Spring Shape
    A 10.7 mm (0.421 in.) 23.4 mm (0.921 in.) Straight
    B 8.0 mm (0.315 in.) 18.9 mm (0.744 in.) Taper

    1. A01ND8OE04

      Apply a sufficient coat of engine oil to the tip area of the exhaust valve shown in the illustration.

    2. Type A:


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

        Note

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

      2. A01NGKXE01

        Using SST, compress the inner compression spring and install the 2 valve spring retainer locks.

        SST
        09202-70020   ( 09202-00010, 09202-01010, 09202-01020 )
      3. A01NH9B

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

        Note

        Be careful not to damage the retainer.

    3. Type B:


      1. A01NERKE01
        Text in Illustration
        *1 Inner Compression Spring
        *2 Valve Spring Retainer
        *3 Cylinder Head
        *a Up

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

        Note


        • Install the inner compression spring with its taper side facing upward (towards the valve spring retainer).

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

      2. A01NH5UE01

        Using SST, compress the inner compression spring and install the 2 valve spring retainer locks.

        SST
        09202-70020   ( 09202-01010, 09202-01020 )
        09202-00020
      3. A01NDHF

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

        Note

        Be careful not to damage the retainer.

  7. INSTALL INTAKE VALVE

    Tech Tips

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

    A01NH31E01
    Text in Illustration
    *A Type A
    *B Type B
    *1 No. 1 Valve Rocker Arm Sub-assembly
    *2 Valve Spring Retainer
    *3 Inner Compression Spring
    *a Valve Spring Retainer Diameter
    *b No. 1 Valve Rocker Arm Sub-assembly Roller Width
    Type No. 1 Valve Rocker Arm Sub-assembly Roller Width Valve Spring Retainer Diameter Inner Compression Spring Shape
    A 10.7 mm (0.421 in.) 23.4 mm (0.921 in.) Straight
    B 8.0 mm (0.315 in.) 18.9 mm (0.744 in.) Taper

    1. A01NE7OE10

      Apply a sufficient coat of engine oil to the tip area of the intake valve shown in the illustration.

    2. Type A:


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

        Note

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

      2. A01NCU3E01

        Using SST, compress the inner compression spring and install the 2 valve spring retainer locks.

        SST
        09202-70020   ( 09202-00010, 09202-01010, 09202-01020 )
      3. A01NGO3

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

        Note

        Be careful not to damage the retainer.

    3. Type B:


      1. A01NERKE01
        Text in Illustration
        *1 Inner Compression Spring
        *2 Valve Spring Retainer
        *3 Cylinder Head
        *a Up

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

        Note


        • Install the inner compression spring with its taper side facing upward (towards the valve spring retainer).

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

      2. A01ND4PE01

        Using SST, compress the inner compression spring and install the 2 valve spring retainer locks.

        SST
        09202-70020   ( 09202-01010, 09202-01020 )
        09202-00020
      3. A01NHJQ

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

        Note

        Be careful not to damage the retainer.

  8. INSTALL VALVE STEM CAP


    1. Apply a light coat of engine oil to the valve stem caps.

    2. Install the valve stem caps on the valves.