ГОЛОВКА БЛОКА ЦИЛИНДРОВ ПРОВЕРКА


  1. INSPECT INTAKE VALVE


    1. Using a gasket scraper, chip off any carbon from the intake valve head.

      Note

      Be careful not to damage the intake valve face.

    2. Using a wire brush, thoroughly clean the intake valve.

    3. Using a micrometer, measure the diameter of the intake valve stem.

      Standard intake valve stem diameter
      4.92 mm (0.194 in.)

  2. INSPECT EXHAUST VALVE


    1. Using a gasket scraper, chip off any carbon from the exhaust valve head.

      Note

      Be careful not to damage the exhaust valve face.

    2. Using a wire brush, thoroughly clean the exhaust valve.

    3. Using a micrometer, measure the diameter of the exhaust valve stem.

      Standard exhaust valve stem diameter
      4.92 mm (0.194 in.)

  3. INSPECT INTAKE VALVE SEAT


    1. Apply a light coat of Prussian blue to the intake valve face.

    2. Lightly press the valve face against the intake valve seat.

      Tech Tips

      Do not rotate the valve while pressing the intake valve.

    3. Check the intake valve face and intake valve seat by using the following procedure.


      1. Check that Prussian blue appears around the entire intake valve face and that the blue mark and intake valve face are concentric. If not, replace the intake valve.

      2. Check that Prussian blue appears around the entire intake valve seat and that the intake valve guide and intake valve face are concentric. If not, resurface the intake valve seat.

      3. A01IURDE03
        Text in Illustration
        *a Width

        Check that the intake valve seat contacts in the middle of the intake valve face with a width of 1.2 mm (0.0472 in.).

  4. INSPECT EXHAUST VALVE SEAT


    1. Apply a light coat of Prussian blue to the exhaust valve face.

    2. Lightly press the exhaust valve face against the exhaust valve seat.

      Tech Tips

      Do not rotate the valve while pressing the exhaust valve.

    3. Check the exhaust valve face and exhaust valve seat by using the following procedure.


      1. Check that Prussian blue appears around the entire exhaust valve face and that the blue mark and exhaust valve face are concentric. If not, replace the exhaust valve.

      2. Check that Prussian blue appears around the entire exhaust valve seat and that the exhaust valve guide and exhaust valve face are concentric. If not, resurface the exhaust valve seat.

      3. A01IR7QE04
        Text in Illustration
        *a Width

        Check that the exhaust valve seat contacts in the middle of the exhaust valve face with a width of 1.4 mm (0.0551 in.).

  5. INSPECT CAMSHAFT THRUST CLEARANCE


    1. Install the camshaft and No. 2 camshaft Click here.

    2. A01IUIC

      Using a dial indicator, measure the thrust clearance while moving the camshaft back and forth.

      Standard thrust clearance
      0.033 to 0.150 mm (0.00129 to 0.00590 in.)

    3. Remove the camshaft and No. 2 camshaft Click here.