Cylinder Head (For Sedan) Reassembly

Engine Hybrid System. Yaris. Ncp93, 131
1Nz-Fe Engine Mechanical. Yaris. Ncp93, 131

  1. INSTALL CAMSHAFT BEARING CAP SETTING RING PIN

  2. INSTALL STUD BOLT

  3. INSTALL VALVE STEM OIL SEAL

  4. INSTALL INTAKE VALVE

  5. INSTALL EXHAUST VALVE

  6. INSTALL OIL CONTROL VALVE FILTER

  7. INSTALL WITH HEAD TAPER SCREW PLUG NO. 2

  8. INSTALL VALVE LIFTER

  9. INSTALL WITH HEAD TAPER SCREW PLUG NO. 1

Cylinder Head (For Sedan) -- Reassembly



1. INSTALL CAMSHAFT BEARING CAP SETTING RING PIN


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Sedan)  Reassembly
  1. Using a plastic-faced hammer, tap a new ring pin in to the specified protrusion height.

    Protrusion height:
    8.5 to 9.5 mm (0.335 to 0.374 in.)


2. INSTALL STUD BOLT


  1. Using "TORX" socket wrenches E5 and E7, install the 7 stud bolts.


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Sedan)  Reassembly

    Torque:
    10 N*m{102 kgf*cm, 7 ft.*lbf}for bolt A
    4.0 N*m{41 kgf*cm, 35 in.*lbf}for bolt B
    10 N*m{102 kgf*cm, 7 ft.*lbf}for bolt C
    9.0 N*m{92 kgf*cm, 80 in.*lbf}for bolt D


3. INSTALL VALVE STEM OIL SEAL


Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Sedan)  Reassembly
  1. Apply a light coat of engine oil to the valve stem oil seal.

    NOTICE:
    Installing the oil seal for intake and exhaust onto the opposite valve guide bush may cause failures.
    HINT:
    The intake valve oil seal is gray and the exhaust valve oil seal is black.


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Sedan)  Reassembly
  1. Using SST, push in a new oil seal.

    SST
    09201-41020


4. INSTALL INTAKE VALVE


Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Sedan)  Reassembly
  1. Install the valve, spring seat, valve spring, and spring retainer.

    NOTICE:
    Install the parts into their original locations in the original order.


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Sedan)  Reassembly
  1. Using SST, compress the valve spring and place the 2 retainer locks around the valve stem.

    SST
    09202-70020(09202-00010)


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Sedan)  Reassembly
  1. Using a plastic-faced hammer and the valve stem (not in use) with its tip wrapped in tape, gently tap the valve stem tip to ensure a proper fit.

    NOTICE:
    Do not damage the valve stem tip.


5. INSTALL EXHAUST VALVE
  1. Install the valve, spring seat, valve spring, and spring retainer.

  1. Using SST, compress the valve spring and place the 2 retainer locks around the valve stem.

    SST
    09202-70020(09202-00010)
  1. Using a plastic-faced hammer and the valve stem (not in use) with the tip wrapped in tape, lightly tap the valve stem tip to ensure a proper fit.

    NOTICE:
    Do not damage the valve stem tip.


6. INSTALL OIL CONTROL VALVE FILTER
  1. Install the oil control valve filter.



7. INSTALL WITH HEAD TAPER SCREW PLUG NO. 2


Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Sedan)  Reassembly
  1. Using an 8 mm hexagon wrench, install the taper screw plug and a new gasket.

    Torque:
    30 N*m{306 kgf*cm, 22 ft.*lbf}


8. INSTALL VALVE LIFTER
  1. Apply a light coat of engine oil to the 16 valve lifters.

  1. Install the 16 valve lifters.

  1. Check that the valve lifters rotate smoothly by hand.



9. INSTALL WITH HEAD TAPER SCREW PLUG NO. 1


Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Sedan)  Reassembly
  1. Using a 10 mm socket hexagon wrench, install the taper screw plug with a new gasket.

    Torque:
    44 N*m{449 kgf*cm, 33 ft.*lbf}