Cylinder Head (For Hatchback) 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 NO. 2 WITH HEAD TAPER SCREW PLUG

  8. INSTALL NO. 1 WITH HEAD TAPER SCREW PLUG

Cylinder Head (For Hatchback) -- Reassembly



1. INSTALL CAMSHAFT BEARING CAP SETTING RING PIN


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

    Protrusion height:
    4.5 to 5.5 mm (0.177 to 0.217 in.)


2. INSTALL STUD BOLT


  1. Using "TORX" socket wrenches E5 and E7, install the 11 stud bolts.


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

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


3. INSTALL VALVE STEM OIL SEAL


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

    Text in Illustration
    *a
    Intake
    *b
    Exhaust
    *c
    Gray
    *d
    Black
    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 Hatchback)  Reassembly
  1. Using SST, push in a new oil seal.

    SST
    09201-41020


4. INSTALL INTAKE VALVE


    Yaris. Ncp93, 131
  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 Hatchback)  Reassembly
  1. Using SST, compress the spring and install the 2 retainer locks.

    SST
    09202-70020(09202-00010)


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Hatchback)  Reassembly
  1. Using a pin-punch (5 mm) 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 spring and install the 2 retainer locks.

    SST
    09202-70020(09202-00010)
  1. Using a pin-punch (5 mm) 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


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Hatchback)  Reassembly
  1. Install the oil control valve filter.

    Text in Illustration
    *1
    Oil Control Valve Filter


7. INSTALL NO. 2 WITH HEAD TAPER SCREW PLUG


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Hatchback)  Reassembly
  1. Using an 8 mm socket hexagon wrench, install the No. 2 with head taper screw plug and a new gasket.

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


8. INSTALL NO. 1 WITH HEAD TAPER SCREW PLUG


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Cylinder Head (For Hatchback)  Reassembly
  1. Using a 14 mm socket hexagon wrench, install the No. 1 with head taper screw plug and a new gasket.

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