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Home >> Toyota >> 2022 >> Corolla Cross L, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 81 (Engine Mechanical System (M20A-FXS) - Service Information (2 Of 2)) >> Cylinder Head >> Disassembly [11/2022 - ] >> Procedure

Disassembly [11/2022 - ]: Procedure

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  1. REMOVE VALVE SPRING RETAINER LOCK 
    1. GTY1029243Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using SST, compress each compression spring and remove the 16 valve spring retainer locks.
        • SST: 09202-70020 
          1. 09202-01010
          2. 09202-01020
        • SST: 09202-00021 
  2. REMOVE VALVE SPRING RETAINER 
    1. GTY1029066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. REMOVE INTAKE VALVE COMPRESSION SPRING (for Intake Side) 
    1. GTY1029067Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. REMOVE EXHAUST VALVE COMPRESSION SPRING (for Exhaust Side) 
    1. Perform the same procedure as for the intake side.
  5. REMOVE INTAKE VALVE 
    1. GTY1029069Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE EXHAUST VALVE 
    1. Perform the same procedure as for the intake side.
  7. REMOVE INTAKE VALVE STEM OIL SEAL (for Intake Side) 
    1. GTY1030127Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE EXHAUST VALVE STEM OIL SEAL (for Exhaust Side) 
    1. Perform the same procedure as for the intake side.
  9. REMOVE INTAKE VALVE SPRING SEAT (for Intake Side) 
    1. GTY1029105Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using compressed air and a Magnet Hand, remove the 8 intake valve spring seats from the cylinder head sub-assembly by blowing air onto them.
  10. REMOVE EXHAUST VALVE SPRING SEAT (for Exhaust Side) 
    1. Perform the same procedure as for the intake side.
  11. REMOVE NO. 1 STRAIGHT SCREW PLUG 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:

    If coolant leaks from a No. 1 straight screw plug or a plug is corroded, replace it.
    1. GTY1029112Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using a 6 mm straight hexagon wrench, remove the 4 No. 1 straight screw plugs from the cylinder head sub-assembly.
  12. REMOVE STUD BOLT 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:

    If a stud bolt is deformed or its threads are damaged, replace it.
    1. GTY1029211Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an E8 "TORX" socket wrench, remove the 7 stud bolts.
  13. REMOVE INTAKE VALVE GUIDE BUSH 
    1. GTY1029128Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Heat the cylinder head sub-assembly to between 80 and 100°C (176 and 212°F).
      2. Place the cylinder head sub-assembly on wooden blocks.
        WARNING:

        Be sure to wear protective gloves.

      3. Using SST and a hammer, tap out the intake valve guide bush.
        • SST: 09201-01055 
        • SST: 09950-70010 
          1. 09951-07100
  14. REMOVE EXHAUST VALVE GUIDE BUSH 
    1. GTY1029214Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Heat the cylinder head sub-assembly to between 80 and 100°C (176 and 212°F).
      2. Place the cylinder head sub-assembly on wooden blocks.
        WARNING:

        Be sure to wear protective gloves.

      3. Using SST and a hammer, tap out the exhaust valve guide bush.
        • SST: 09201-01055 
        • SST: 09950-70010 
          1. 09951-07100
  15. REMOVE RING PIN 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:

    It is not necessary to remove the ring pins unless they are being replaced.
    1. GTY1029070Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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