CYLINDER HEAD REPLACEMENT

PROCEDURE


  1. REPLACE INTAKE VALVE GUIDE BUSH


    1. Heat the cylinder head to 80 to 100°C (176 to 212°F).

    2. Place the cylinder head on wooden blocks.

      CAUTION:

      Be sure to wear protective gloves.

    3. B004WQ6C01

      Using SST and a hammer, tap out the intake valve guide bushes.

      SST
      09201-10000   ( 09201-01050 )
      09950-70010   ( 09951-07100 )

    4. Using a caliper gauge, measure the intake valve guide bush bore diameter of the cylinder head.

      Standard cylinder bore diameter
      10.285 to 10.306 mm (0.405 to 0.406 in.)
      Select a New Guide Bush (STD or O/S 0.05)
      Bush Size Specified Condition
      STD 10.333 to 10.344 mm (0.40681 to 0.40724 in.)
      O/S 0.05 10.383 to 10.394 mm (0.40878 to 0.40921 in.)

      If the bush bore diameter of the cylinder head is more than 10.306 mm (0.406 in.), machine the bush bore to the dimension of 10.335 to 10.356 mm (0.407 to 0.408 in.) to install an O/S 0.05 valve guide bush.

      If the bush bore diameter of the cylinder head is more than 10.356 mm (0.408 in.), replace the cylinder head.

    5. Heat the cylinder head to 80 to 100°C (176 to 212°F).

    6. Place the cylinder head on wooden blocks.

      CAUTION:

      Be sure to wear protective gloves.

    7. B004T9GC02
      *a Protrusion Height

      Using SST, tap in new intake valve guide bushes to the specified protrusion height.

      SST
      09201-10000   ( 09201-01050 )
      09950-70010   ( 09951-07100 )
      Standard protrusion height
      9.30 to 9.70 mm (0.366 to 0.382 in.)
    8. B004UKT

      Using a sharp 5.5 mm reamer, ream the valve guide bushings to obtain the specified clearance.

      Standard oil clearance
      0.025 to 0.060 mm (0.000984 to 0.00236 in.)

  2. REPLACE EXHAUST VALVE GUIDE BUSH


    1. Heat the cylinder head to 80 to 100°C (176 to 212°F).

    2. Place the cylinder head on wooden blocks.

      CAUTION:

      Be sure to wear protective gloves.

    3. B004R5ZC01

      Using SST and a hammer, tap out the exhaust valve guide bushes.

      SST
      09201-10000   ( 09201-01050 )
      09950-70010   ( 09951-07100 )

    4. Using a caliper gauge, measure the exhaust valve guide bush bore diameter of the cylinder head.

      Standard cylinder bore diameter
      10.285 to 10.306 mm (0.405 to 0.406 in.)
      Select a New Guide Bush (STD or O/S 0.05)
      Bush Size Specified Condition
      STD 10.333 to 10.344 mm (0.40681 to 0.40724 in.)
      O/S 0.05 10.383 to 10.394 mm (0.40878 to 0.40921 in.)

      If the bush bore diameter of the cylinder head is more than 10.306 mm (0.406 in.), machine the bush bore to the dimension of 10.335 to 10.356 mm (0.407 to 0.408 in.) to install an O/S 0.05 valve guide bush.

      If the bush bore diameter of the cylinder head is more than 10.356 mm (0.408 in.), replace the cylinder head.

    5. Heat the cylinder head to 80 to 100°C (176 to 212°F).

    6. Place the cylinder head on wooden blocks.

      CAUTION:

      Be sure to wear protective gloves.

    7. B004RBWC02
      *a Protrusion Height

      Using SST, tap in new exhaust valve guide bushes to the specified protrusion height.

      SST
      09201-10000   ( 09201-01050 )
      09950-70010   ( 09951-07100 )
      Standard protrusion height
      9.30 to 9.70 mm (0.366 to 0.382 in.)
    8. B004RFR

      Using a sharp 5.5 mm reamer, ream the valve guide bushings to obtain the specified clearance.

      Standard oil clearance
      0.030 to 0.065 mm (0.00118 to 0.00256 in.)

  3. REPLACE RING PIN

    Note

    It is not necessary to remove the ring pin unless it is being replaced.

    B004TG1C03
    *a for Bank 1
    *b for Bank 2
    *c Protrusion Height

    1. Using a plastic-faced hammer, tap in new ring pins to the specified protrusion height.

      Standard protrusion height
      2.5 to 3.5 mm (0.0984 to 0.138 in.)

  4. REPLACE STRAIGHT PIN

    Note

    It is not necessary to remove the straight pin unless it is being replaced.


    1. Using a plastic-faced hammer, tap in new straight pins as shown in the illustration.

      B004UVJC03
      *a for Bank 1 *b for Bank 2
      *c Protrusion Height *d 34 mm (1.34 in.)
      Standard protrusion height
      17.5 to 19.5 mm (0.689 to 0.768 in.)