CYLINDER HEAD REASSEMBLY

Tech Tips

Perform "Inspection After Repairs" after replacing the cylinder head sub-assembly Click here.


  1. INSTALL STUD BOLT

    Note

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


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

      A01ITLZE07
      Torque:
      9.5 N*m  { 97 kgf*cm, 84 in.*lbf }

  2. REPLACE SPARK PLUG TUBE

    Note

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

    A01INU2E06

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

      Adhesive
      Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent.
      Standard application width
      1.0 to 3.0 mm (0.0394 to 0.118 in.)
      Distance
      1.0 to 7.0 mm (0.0394 to 0.294 in.)

      Note


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

      • Be careful not to deform the spark plug tube.

      • Be careful not to expose the seal to coolant for at least 1 hour after installing the tube.

    2. A01IPXYE02

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

      Standard protrusion height
      122 mm (4.80 in.)

      Note

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

  3. INSTALL NO. 2 STRAIGHT SCREW PLUG

    Note

    If water leaks from the straight screw plug or the plug is corroded, replace it.

    A01IO6D

    1. Using a 10 mm straight hexagon wrench, install 3 new gaskets and the 3 straight screw plugs.

      Torque:
      44 N*m  { 449 kgf*cm, 32 ft.*lbf }

  4. INSTALL VALVE SPRING SEAT


    1. Install the valve spring seats to the cylinder head.

  5. INSTALL VALVE STEM OIL SEAL


    1. Apply a light coat of engine oil to a new oil seal.

      A01IQDQE01

      Note

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

      Tech Tips


      • for Intake Side:

        The intake side valve stem oil seals is gray or green.

      • for Exhaust Side:

        The exhaust side valve stem oil seals is black or brown.

    2. A01IOXZE01

      Using SST, push on the oil seal.

      SST
      09201-41020

      Note

      Failure to use SST will cause the seal to be damaged or improperly seated.

  6. INSTALL INTAKE VALVE


    1. Place the cylinder head on wooden blocks.

    2. A01IT1IE15

      Apply engine oil to each valve over an area 30 mm (1.18 in.) or more from its tip, as shown in the illustration.

    3. A01ITR4E01

      Install the valve, compression spring and spring retainer to the cylinder head.

      Note

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

    4. A01IO40E01

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

      SST
      09202-70020
      09202-00021
    5. A01IO2P

      Using a plastic-faced 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 retainer.

  7. INSTALL EXHAUST VALVE


    1. Place the cylinder head on wooden blocks.

    2. A01IOGDE14

      Apply engine oil to each valve over an area 30 mm (1.18 in.) or more from its tip, as shown in the illustration.

    3. A01IPGPE01

      Install the valve, compression spring and spring retainer to the cylinder head.

      Note

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

    4. A01IQ8JE01

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

      SST
      09202-70020
      09202-00021
    5. A01IO7X

      Using a plastic-faced 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 retainer.