CYLINDER HEAD REASSEMBLY

CAUTION / NOTICE / HINT

Tech Tips


  • Perform "Inspection After Repair" after replacing the cylinder head sub-assembly.

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  • 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.

    A002B0DC02
    *A Type A *B Type B
    *C Cylinder Head RH *D Cylinder Head LH
    *a Identification Mark - -
    Type Identification Mark Compression Spring Shape
    A 1 Hole Straight
    B 2 Holes Taper
  • A002A7MC01
    *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

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

    Type No. 1 ValveRocker Arm Sub-assembly Roller Width Valve Spring Retainer Diameter 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 (0.7441 in.) Taper

PROCEDURE


  1. INSTALL SPARK PLUG TUBE

    Tech Tips

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


    1. A0027WON15
      *1 1.0 to 3.0 mm
      *2 9.0 to 15.0 mm
      *3 (0.354 to 0.591 in.)

      Apply adhesive to a new spark plug tube as shown in the illustration.

      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 of applying adhesive.

      • Be careful not to deform the spark plug tube.

      • Do not expose the spark plug tube to engine oil for at least 1 hour after installing it.

    2. A0029J1C07
      *a Cylinder Head Top Surface

      Using a wooden block and hammer, tap in the spark plug tube.

      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. A0029SCC06
      *A for Bank 1
      *B for Bank 2

      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. A002BXYC06
      *A for Bank 1
      *B for Bank 2

      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 seat to the cylinder head sub-assembly.

  5. INSTALL VALVE STEM OIL SEAL


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

      A002A35C01
      *A for Intake Side *B for Exhaust Side
      *a

      Gray

      (for Intake Side)

      		 *b

      Black

      (for Intake Side)
      *c

      Black

      (for Exhaust Side)

      		 *d

      Gray

      (for Exhaust Side)

      Note

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

      Tech Tips


      • for Intake Side

        The intake side valve stem oil seals is gray or black.

      • for Exhaust Side

        The exhaust side valve stem oil seals is black or gray.

    2. A0027G1C11
      *a Correct
      *b Incorrect

      Using SST, push in the valve stem oil seals.

      SST
      09201-41020

      Note

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

  6. INSTALL EXHAUST VALVE

    A002A7MC01
    *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

    Tech Tips

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

    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. A002CCIC01
      *a 30 mm (1.18 in.) or more

      Sufficiently apply 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 sub-assembly.

        Note

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

      2. A002CL6N11

        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. A01QW7Y

        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. A0029IQC01
        *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. A002BOAN01

        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. A01QWR5

        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

    A002A7MC01
    *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

    Tech Tips

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

    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. A0028GKC01
      *a 30 mm (1.18 in.) or more

      Sufficiently apply 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 sub-assembly.

        Note

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

      2. A0027QNN10

        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. A01QW2V

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

        Note

        Be careful not to damage the valve spring retainer.

    3. Type B:


      1. A0029IQC01
        *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. A00289ON03

        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. A01QVJF

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

        Note

        Be careful not to damage the valve spring 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.