CYLINDER HEAD DISASSEMBLY

PROCEDURE


  1. REMOVE INTAKE VALVE

    Tech Tips

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

    Type Shape of the Inner Compression Spring
    A Straight
    B Taper
    A01O923C05
    *A Type A
    *B Type B
    *1 No. 1 Valve Rocker Arm Sub-assembly
    *2 Valve Spring Retainer
    *3 Inner Compression Spring
    *4 Valve Lash Adjuster Assembly

    1. for Type A:


      1. A01O8SIN18

        Using SST and wooden blocks, compress the inner compression spring and remove the valve spring retainer locks.

        SST
        09202-70020   ( 09202-00010 )

      2. Remove the valve spring retainer, inner compression spring and intake valve.

        Tech Tips

        Arrange the removed parts in the correct order.

    2. for Type B:


      1. A01O87CN01

        Using SST and wooden blocks, compress the inner compression spring and remove the valve spring retainer locks.

        SST
        09202-70020
        09202-00021

      2. Remove the valve spring retainer, inner compression spring and intake valve.

        Tech Tips

        Arrange the removed parts in the correct order.

  2. REMOVE EXHAUST VALVE

    Tech Tips

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

    Type Shape of the Inner Compression Spring
    A Straight
    B Taper
    A01O923C05
    *A Type A
    *B Type B
    *1 No. 1 Valve Rocker Arm Sub-assembly
    *2 Valve Spring Retainer
    *3 Inner Compression Spring
    *4 Valve Lash Adjuster Assembly

    1. for Type A:


      1. A01O82SN17

        Using SST and wooden blocks, compress the inner compression spring and remove the valve spring retainer locks.

        SST
        09202-70020   ( 09202-00010 )

      2. Remove the valve spring retainer, inner compression spring and exhaust valve.

        Tech Tips

        Arrange the removed parts in the correct order.

    2. for Type B:


      1. A01O8JDN01

        Using SST and wooden blocks, compress the inner compression spring and remove the valve spring retainer locks.

        SST
        09202-70020
        09202-00021

      2. Remove the valve spring retainer, inner compression spring and exhaust valve.

        Tech Tips

        Arrange the removed parts in the correct order.

  3. REMOVE VALVE STEM OIL SEAL


    1. A01O8BD

      Using needle-nose pliers, remove the valve stem oil seals.

  4. REMOVE VALVE SPRING SEAT


    1. A01O961

      Using compressed air and a magnet hand, remove the valve spring seat by blowing air onto it.

  5. REMOVE NO. 1 STRAIGHT SCREW PLUG

    Note

    If coolant leaks from a No. 1 straight screw plug or a plug is corroded, replace it.


    1. A01O7VO

      Using a 10 mm hexagon wrench, remove the 3 No. 1 straight screw plugs and 3 gaskets.

  6. REMOVE NO. 2 STRAIGHT SCREW PLUG

    A01O8W9

    Note

    If coolant leaks from the No. 2 straight screw plug or the plug is corroded, replace it.


    1. Using a 14 mm hexagon wrench, remove the No. 2 straight screw plug and gasket.

  7. REMOVE CYLINDER HEAD STUD BOLT

    Note

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