Cylinder Head (For Sedan) Disassembly

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

  1. REMOVE WITH HEAD TAPER SCREW PLUG NO. 1

  2. REMOVE VALVE LIFTER

  3. REMOVE WITH HEAD TAPER SCREW PLUG NO. 2

  4. REMOVE OIL CONTROL VALVE FILTER

  5. REMOVE INTAKE VALVE

  6. REMOVE EXHAUST VALVE

  7. REMOVE VALVE STEM OIL SEAL

  8. REMOVE VALVE SPRING SEAT

  9. REMOVE STUD BOLT

  10. REMOVE CAMSHAFT BEARING CAP SETTING RING PIN

Cylinder Head (For Sedan) -- Disassembly



1. REMOVE WITH HEAD TAPER SCREW PLUG NO. 1


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

  1. Using a 10 mm socket hexagon wrench, remove the taper screw plug and the gasket.



2. REMOVE VALVE LIFTER

  1. Remove the 16 valve lifters from the cylinder head.

    HINT:
    Keep the valve lifters in the correct order so that they can be returned to their original locations when reassembled.


3. REMOVE WITH HEAD TAPER SCREW PLUG NO. 2


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

  1. Using an 8 mm hexagon wrench, remove the taper screw plug.



4. REMOVE OIL CONTROL VALVE FILTER


5. REMOVE INTAKE VALVE


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

  1. Using SST, compress the valve spring and remove the 2 retainer locks, retainer and valve spring.

    SST
    09202-70020(09202-00010)
    HINT:
    Keep the valves, valve springs, spring seats and spring retainers in the correct order so that they can be returned to their original locations when reassembled.


6. REMOVE EXHAUST VALVE

  1. Using SST, compress the valve spring and remove the 2 retainer locks, retainer and valve spring.

    SST
    09202-70020(09202-00010)
    HINT:
    Keep the valves, valve springs, spring seats and spring retainers in the correct order so that they can be returned to their original locations when reassembled.


7. REMOVE VALVE STEM OIL SEAL


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

  1. Using needle-nose pliers, remove the oil seal.



8. REMOVE VALVE SPRING SEAT


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

  1. Using compressed air and a magnetic finger, remove the valve spring seats.



9. REMOVE STUD BOLT


10. REMOVE CAMSHAFT BEARING CAP SETTING RING PIN