CYLINDER HEAD REPAIR

PROCEDURE


  1. REPAIR INTAKE VALVE SEAT

    Note


    • Repair the seat while checking the seating position.

    • Keep the lip free from foreign matter.

    • Take off the cutter gradually to make the valve seat smooth.


    1. A00YT3TC05
      *a Width
      *b 45°
      *c 30°

      If the seating is too high on the intake valve face, use 30° and 45° cutters to correct the seat.

    2. A00YWWNC04
      *a Width
      *b 60°
      *c 45°

      If the seating is too low on the intake valve face, use 60° and 45° cutters to correct the seat.

    3. Check that the seat contact is in the middle of the intake valve face and has the following width.

      Standard width
      1.0 to 1.4 mm (0.0394 to 0.0551 in.)

  2. REPAIR EXHAUST VALVE SEAT

    Note


    • Repair the seat while checking the seating position.

    • Keep the lip free from foreign matter.

    • Take off the cutter gradually to make the valve seat smooth.


    1. A00YTBCC05
      *a Width
      *b 45°
      *c 30°

      If the seating is too high on the exhaust valve face, use 30° and 45° cutters to correct the exhaust valve seat.

    2. A00YV0PC04
      *a Width
      *b 60°
      *c 45°

      If the seating is too low on the exhaust valve face, use 60° and 45° cutters to correct the exhaust valve seat.

    3. Check that the seat contact is in the middle of the exhaust valve face and has the following width.

      Standard width
      1.0 to 1.4 mm (0.0394 to 0.0551 in.)