CYLINDER HEAD REPAIR


  1. REPAIR INTAKE VALVE SEAT

    Note


    • Repair the seat while checking the seating position.

    • Keep the lip free of foreign matter.

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


    1. A01HVLR

      Using a 45° cutter, resurface the valve seat so that the valve seat width is more than the specification.

    2. A01HSNPE13
      Text in Illustration
      *a Width

      Using 30° and 60° cutters, correct the valve seat so that the valve contacts the entire circumference of the seat. The contact should be in the center of the valve seat, and the valve seat width should be maintained within the specified range around the entire circumference of the seat.

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

    3. Hand-lap the valve and valve seat with an abrasive compound.

    4. Check the valve seating position.

  2. REPAIR EXHAUST VALVE SEAT

    Note


    • Repair the seat while checking the seating position.

    • Keep the lip free of foreign matter.

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


    1. A01HU1U

      Using a 45° cutter, resurface the valve seat so that the valve seat width is more than the specification.

    2. A01HVUTE17
      Text in Illustration
      *a Width

      Using 30° and 75° cutters, correct the valve seat so that the valve contacts the entire circumference of the seat. The contact should be in the center of the valve seat, and the valve seat width should be maintained within the specified range around the entire circumference of the seat.

      Standard width
      1.2 to 1.6 mm (0.0472 to 0.0630 in.)

    3. Hand-lap the valve and valve seat with an abrasive compound.

    4. Check the valve seating position.