CYLINDER HEAD REASSEMBLY

CAUTION / NOTICE / HINT

Tech Tips

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


PROCEDURE


  1. INSTALL SPARK PLUG TUBE

    Tech Tips

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


    1. A000SEFE26
      Text in Illustration
      *a 2.0 mm (0.079 in.)
      *b 4.0 mm (0.157 in.)

      Apply adhesive onto the shaded area of a new spark plug tube.

      Adhesive
      Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent.

      Note

      Install the spark plug tube within 3 minutes after applying adhesive.

    2. A000PEJE03
      Text in Illustration
      *a Protrusion Height

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

      Standard protrusion height
      112 mm (4.41 in.)

      Note


      • To avoid tapping in the spark plug tube too far, measure the protrusion height while tapping it.

      • Be careful not to deform the spark plug tube.

      • Be careful not to expose the adhesive to engine oil for at least 1 hour after installing it.

  2. INSTALL STUD BOLT

    Note

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


    1. Using an E8 and E10 "TORX" socket wrench, install the stud bolts.

      Torque:
      for bolt A, B, D
      6.5 N*m  { 66 kgf*cm, 58 in.*lbf }
      for bolt C
      8.5 N*m  { 87 kgf*cm, 75 in.*lbf }
      A000SG4E02
      Text in Illustration
      *a Intake Side *b Front Side
      *c Exhaust Side *d Rear Side
      *e 26 mm (1.02 in.) *f 16.7 mm (0.657 in.)
      *g 51.7 mm (2.04 in.) *h 13 mm (0.512 in.)
      *i 48 mm (1.89 in.) *j 24.5 mm (0.965 in.)
      *k 14 mm (0.551 in.) *l 40 mm (1.58 in.)
      *m 29 mm (1.14 in.) - -
  3. INSTALL NO. 1 STRAIGHT SCREW PLUG

    Note

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


    1. Using a 10 mm hexagon wrench, install 3 new cylinder head screw plug gaskets and the 3 No. 1 straight screw plugs.

      Torque:
      44 N*m  { 449 kgf*cm, 32 ft.*lbf }
  4. INSTALL VALVE SPRING SEAT


    1. Install the 16 valve spring seats to the cylinder head sub-assembly.

  5. INSTALL VALVE STEM OIL SEAL


    1. A000NOWE12
      Text in Illustration
      *a Intake Side
      *b Exhaust Side
      *c "NOK" Mark
      *d Gray
      *e Black

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

      Note

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

      Tech Tips

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

    2. A000MULE03
      Text in Illustration
      *a Correct
      *b Incorrect

      Using SST, push in the 16 valve stem oil seals.

      SST
      09201-41020
  6. INSTALL INTAKE VALVE


    1. A000PFTE07
      Text in Illustration
      *a 30 mm (1.18 in.) or more

      Apply a sufficient coat of engine oil to the tip area of the intake valve as shown in the illustration.

    2. A000N3DE02
      Text in Illustration
      *a Narrow
      *b Wide

      Install the 8 intake valves, 8 inner compression springs and 8 valve spring retainers to the cylinder head sub-assembly.

      Note

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

    3. A000RZIE02

      Using SST, compress the inner compression spring and install the 16 valve retainer locks.

      SST
      09202-70020
      09202-00021
    4. Using a plastic-faced hammer, lightly tap the valve stem tip to ensure a proper fit.

      Note

      Be careful not to damage the retainer.

  7. INSTALL EXHAUST VALVE


    1. A000PFTE07
      Text in Illustration
      *a 30 mm (1.18 in.) or more

      Apply a sufficient coat of engine oil to the tip area of the exhaust valve as shown in the illustration.

    2. A000R4QE02
      Text in Illustration
      *a Narrow
      *b Wide

      Install the 8 exhaust valves, 8 inner compression springs and 8 valve spring retainers to the cylinder head sub-assembly.

      Note

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

    3. A000RL2E02

      Using SST, compress the inner compression spring and install the 16 valve retainer locks.

      SST
      09202-70020
      09202-00021
    4. Using a plastic-faced hammer, lightly tap the valve stem tip to ensure a proper fit.

      Note

      Be careful not to damage the retainer.