CYLINDER HEAD (w/ DPF) REPAIR


  1. REPAIR INTAKE VALVE SEAT


    1. Check the valve seating position.


      1. A01KFKME04
        Text in Illustration
        *a Width

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

      2. Lightly press the valve against the seat. Do not rotate the valve.

    2. Check the valve face and seat for the following:


      1. If blue appears 360° around the face, the valve is concentric. If not, replace the valve.

      2. If blue appears 360° around the valve seat, the guide and face are concentric. If not, resurface the seat.

      3. Check that the seat contact is in the middle of the valve face with the width below.

        Standard width
        1.2 to 1.6 mm (0.047 to 0.063 in.)
    3. A01KI46E06

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

    4. A01KIOKE06

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

    5. A01KH8EE01

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

    6. After hand-lapping, clean the valve and valve seat.

  2. REPAIR EXHAUST VALVE SEAT


    1. Check the valve seating position.


      1. A01KEH2E03
        Text in Illustration
        *a Width

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

      2. Lightly press the valve against the seat. Do not rotate valve.

    2. Check the valve face and seat for the following:


      1. If blue appears 360° around the face, the valve is concentric. If not, replace the valve.

      2. If blue appears 360° around the valve seat, the guide and face are concentric. If not, resurface the seat.

      3. Check that the seat contact is in the middle of the valve face with the width below.

        Standard width
        1.6 to 2.0 mm (0.063 to 0.079 in.)
    3. A01KI46E07

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

    4. A01KIOKE07

      If the seating is too low on the valve face, use 75 and 45° cutters to correct the seat.

    5. A01KFQIE01

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

    6. After hand-lapping, clean the valve and valve seat.