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 intake valve seat smooth.


    1. A01L9E6C01
      *a Width

      If the seating is too high on the intake valve face, use 25° and 45° cutters to correct the intake valve seat.

    2. A01LDESC01
      *a Width

      If the seating is too low on the intake valve face, use 70° and 45° cutters to correct the intake valve seat.

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

      Standard width
      1.2 to 1.6 mm (0.0472 to 0.0630 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 exhaust valve seat smooth.


    1. A01LCNHC01
      *a Width

      If the seating is too high on the exhaust valve face, use 25° and 45° cutters to correct the exhaust valve seat.

    2. A01L85SC01
      *a Width

      If the seating is too low on the exhaust valve face, use 75° 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
      1.6 to 2.0 mm (0.0630 to 0.0787 in.)