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CYLINDER HEAD REPAIR

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PROCEDURE


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    REPAIR INTAKE VALVE SEAT

    Note:

    • Repair the seat while checking the seating position.

    • Keep the lip free of foreign matter.


    1. Using a 90° cutter, resurface the valve seat so that the valve seat width is more than the specification.

    2. A01X29WE01
      Table 1.
      *1 Width

      Using 40° and 130° 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. A01X8NE

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

    4. Check the valve seating position.

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    REPAIR EXHAUST VALVE SEAT

    Note:

    • Repair the seat while checking the seating position.

    • Keep the lip free of foreign matter.


    1. Using a 90° cutter, resurface the valve seat so that the valve seat width is more than the specification.

    2. A01X29WE02
      Table 2.
      *1 Width

      Using 60° and 150° 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. A01XBG5

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

    4. Check the valve seating position.