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Reassembly [11/2021 - ]: Procedure

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  1. INSTALL INTAKE VALVE GUIDE BUSH 
    1. GTY1075753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protrusion Height - -
      1. Using a caliper gauge, measure the intake valve guide bush bore diameter of the cylinder head sub-assembly.

        Standard Intake Valve Guide Bush Bore Diameter

        10.285 to 10.306 mm (0.405 to 0.406 in.)

        New Guide Bush Selection Chart

        Bush Size Specified Condition
        STD 10.333 to 10.344 mm (0.40681 to 0.40724 in.)
        O/S 0.05 10.383 to 10.394 mm (0.40878 to 0.40921 in.)

        Standard Bush Length

        41.3 to 41.7 mm (1.63 to 1.64 in.)

        HINT: 

        • If the intake valve guide bush bore diameter of the cylinder head sub-assembly is more than 10.306 mm (0.406 in.), machine the intake valve guide bush bore of the cylinder head sub-assembly to a dimension of 10.335 to 10.356 mm (0.407 to 0.408 in.) to install an O/S 0.05 intake valve guide bush.
        • If the intake valve guide bush bore diameter of the cylinder head sub-assembly is more than 10.356 mm (0.408 in.), replace the cylinder head sub-assembly.
      2. Heat the cylinder head sub-assembly to between 80 and 100°C (176 and 212°F).
        WARNING:

        Be sure to wear protective gloves.

      3. Using SST and a hammer, tap in a new intake valve guide bush to the specified protrusion height.
        • SST: 09201-10000 
          1. 09201-01050
        • SST: 09950-70010 
          1. 09951-07100

        Standard Protrusion Height

        13.35 to 13.60 mm (0.526 to 0.535 in.)

      4. Using a sharp 5.5 mm reamer, ream the intake valve guide bush to obtain the standard oil clearance.

        Standard Oil Clearance

        0.025 to 0.060 mm (0.000984 to 0.00236 in.)

  2. INSTALL EXHAUST VALVE GUIDE BUSH 
    1. GTY1075266Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protrusion Height - -
      1. Using a caliper gauge, measure the exhaust valve guide bush bore diameter of the cylinder head sub-assembly.

        Standard Exhaust Valve Guide Bush Bore Diameter

        10.285 to 10.306 mm (0.405 to 0.406 in.)

        New Guide Bush Selection Chart

        Bush Size Specified Condition
        STD 10.333 to 10.344 mm (0.40681 to 0.40724 in.)
        O/S 0.05 10.383 to 10.394 mm (0.40878 to 0.40921 in.)

        Standard Bush Length

        43.3 to 43.7 mm (1.70 to 1.72 in.)

        HINT: 

        • If the exhaust valve guide bush bore diameter of the cylinder head sub-assembly is more than 10.306 mm (0.406 in.), machine the exhaust valve guide bush bore of the cylinder head sub-assembly to a dimension of 10.335 to 10.356 mm (0.407 to 0.408 in.) to install an O/S 0.05 exhaust valve guide bush.
        • If the exhaust valve guide bush bore diameter of the cylinder head sub-assembly is more than 10.356 mm (0.408 in.), replace the cylinder head sub-assembly.
      2. Heat the cylinder head sub-assembly to between 80 and 100°C (176 and 212°F).
        WARNING:

        Be sure to wear protective gloves.

      3. Using SST and a hammer, tap in a new exhaust valve guide bush to the specified protrusion height.
        • SST: 09201-10000 
          1. 09201-01050
        • SST: 09950-70010 
          1. 09951-07100

        Standard Protrusion Height

        13.75 to 14.00 mm (0.541 to 0.551 in.)

      4. Using a sharp 5.5 mm reamer, ream the exhaust valve guide bush to obtain the standard oil clearance.

        Standard Oil Clearance

        0.030 to 0.065 mm (0.00118 to 0.00256 in.)

  3. INSTALL SPARK PLUG TUBE 
    NOTE:

    When using a new cylinder head sub-assembly, the spark plug tubes must be replaced.
    1. GTY1076139Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a 1.0 to 7.0 mm *b 1.0 mm
      *c Protrusion Height - -
      1. 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 7.0 mm (0.0394 to 0.276 in.)

        Distance

        1.0 mm (0.0394 in.)

      2. Using a wooden block and hammer, tap in the 4 spark plug tubes to the specified protrusion height.

        Standard Protrusion Height

        75.7 to 76.7 mm (2.98 to 3.02 in.)

        NOTE:
        • Do not expose the spark plug tube to engine oil for at least 1 hour after installing it.
        • Be careful not to deform the spark plug tube.
  4. INSTALL RING PIN 
    1. GTY1075303Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protrusion Height - -
      1. Using a plastic hammer, tap in 2 new ring pins to the cylinder head sub-assembly.

        Standard Protrusion Height

        6.5 to 7.5 mm (0.256 to 0.295 in.)

  5. INSTALL STUD BOLT 
    1. GTY1074861Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a 20 mm (0.787 in.) *b 35 mm (1.38 in.)
      *c 13 mm (0.512 in.) - -
      1. Using an E8 "TORX" socket wrench, install the 7 stud bolts.

        Torque: 6.5 N.m (66 kgf/cm, 58 in.lbf) 

  6. INSTALL NO. 1 STRAIGHT SCREW PLUG 
    1. GTY1075615Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Apply adhesive to the 4 No. 1 straight screw plugs.

        Adhesive

        Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent

      2. Using a 6 mm hexagon socket wrench, install the 4 No. 1 straight screw plugs to the cylinder head sub-assembly.

        Torque: 25 N.m (255 kgf/cm, 18 ft.lbf) 

        NOTE:

        Do not expose the No. 1 straight screw plug to engine oil for at least 1 hour after installing it.

  7. INSTALL INTAKE VALVE SPRING SEAT 
  8. INSTALL EXHAUST VALVE SPRING SEAT 
  9. INSTALL INTAKE VALVE STEM OIL SEAL 
    1. GTY1075020Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Intake Valve Stem Oil Seal *b Exhaust Valve Stem Oil Seal
      *c Gold *d Gray
      *e Correct *f Incorrect
      1. Apply a light coat of engine oil to 8 new intake valve stem oil seals.
        NOTE:

        Make sure to install each valve stem oil seal to the correct side. Installing an intake valve stem oil seal to the exhaust side or installing an exhaust valve stem oil seal to the intake side can cause installation problems later.

        HINT: 

        The intake valve stem oil seals are gold and the exhaust valve stem oil seals are gray.

      2. Using SST, push in the 8 intake valve stem oil seals.
        • SST: 09201-41020 
        NOTE:

        Do not push in the valve stem oil seals at an angle.

  10. INSTALL EXHAUST VALVE STEM OIL SEAL 
    1. Perform the same procedure as for the intake valve stem oil seal.
  11. INSTALL INTAKE VALVE 
    1. GTY1075552Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a 30 mm (1.18 in.) or more - -
      1. Sufficiently apply engine oil to the tip area of the intake valve shown in the illustration.
      2. Install the 8 intake valves.
  12. INSTALL EXHAUST VALVE 
    1. Perform the same procedure as for the intake valve.
  13. INSTALL INTAKE VALVE COMPRESSION SPRING 
    NOTE:

    Make sure to install the compression springs with the taper side (valve spring retainer side) facing up.
    1. GTY998465Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. INSTALL EXHAUST VALVE COMPRESSION SPRING 
    1. Perform the same procedure as for the intake valve compression spring.
  15. INSTALL VALVE SPRING RETAINER 
  16. INSTALL VALVE SPRING RETAINER LOCK 
    1. GTY1075347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using SST, install the 16 valve spring retainer locks.
        • SST: 09202-70020 
          1. 09202-01010
          2. 09202-01020
        • SST: 09202-00021 
      2. Using a plastic hammer, lightly tap the valve stem tip to ensure a proper fit.
        NOTE:
        • Be careful not to damage the valve stem tip.
        • Be careful not to damage the valve spring retainer.
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