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Removal [11/2021 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.
  1. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH (TWC: Front Catalyst) 

    Refer to REMOVAL [11/2021 - ]

  2. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY RH (TWC: Front Catalyst) 

    Refer to REMOVAL [11/2021 - ]

  3. REMOVE DIRECT FUEL INJECTOR ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

  4. REMOVE NO. 3 CAMSHAFT SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ] 

  5. REMOVE NO. 4 CAMSHAFT SUB-ASSEMBLY 

    Refer to REMOVAL [11/2021 - ] 

  6. REMOVE CAMSHAFT 

    Refer to REMOVAL [11/2021 - ] 

  7. REMOVE NO. 2 CAMSHAFT 

    Refer to REMOVAL [11/2021 - ] 

  8. REMOVE NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY 

    See step  58

  9. REMOVE CYLINDER HEAD LH 
    1. Remove the 3 bolts and camshaft housing LH.
      GTY499809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Uniformly loosen and remove the 2 bolts in the order shown in the illustration.
      Fig 1: Camshaft Housing LH Bolts Loosening Sequence (1 Of 2)
      GTY508107Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a 10 mm bi-hexagon wrench, uniformly loosen the 10 cylinder head set bolts in the order shown in the illustration. Remove the 10 cylinder head set bolts and 10 plate washers.
      NOTE:
      • Be careful not to drop the plate washers into the cylinder head LH.
      • Warpage or cracking of the cylinder head LH could result from removing the bolts in an incorrect order.

      HINT: 

      Arrange the removed parts in such a way that they can be installed to their original locations.

      Fig 2: Camshaft Housing LH Bolts Loosening Sequence (2 Of 2)
      GTY503469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the cylinder head LH.
  10. REMOVE NO. 2 CYLINDER HEAD GASKET 
    1. Remove the No. 2 cylinder head gasket.
  11. REMOVE CYLINDER HEAD SUB-ASSEMBLY 
    1. Remove the 3 bolts and camshaft housing RH.
      Fig 3: Camshaft Housing Bolts RH Loosening Sequence
      GTY499805Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Uniformly loosen and remove the 2 bolts in the order shown in the illustration.
      Fig 4: Cylinder Head Sub-Assembly Loosening Sequence (1 Of 2)
      GTY497536Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a 10 mm bi-hexagon wrench, uniformly loosen the 10 cylinder head set bolts in the order shown in the illustration. Remove the 10 cylinder head set bolts and 10 plate washers.
      NOTE:
      • Be careful not to drop the plate washers into the cylinder head sub-assembly.
      • Warpage or cracking of the cylinder head sub-assembly could result from removing the bolts in an incorrect order.

      HINT: 

      Arrange the removed parts in such a way that they can be installed to their original locations.

      Fig 5: Cylinder Head Sub-Assembly Loosening Sequence (2 Of 2)
      GTY513847Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the cylinder head sub-assembly.
  12. REMOVE CYLINDER HEAD GASKET 
    1. Remove the cylinder head gasket.
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