CYLINDER HEAD REPLACEMENT

PROCEDURE


  1. REPLACE INTAKE VALVE GUIDE BUSH


    1. A005JGHE01

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

    2. Place the cylinder head on wooden blocks.

    3. Using SST and a hammer, tap out the guide bush.

      SST
      09201-10000   ( 09201-01050 )
      09950-70010   ( 09951-07100 )
    4. A005JMV

      Using a caliper gauge, measure the bush bore diameter of the cylinder head.

      Bush bore diameter
      10.285 to 10.306 mm (0.40492 to 0.40575 in.)
      Select a New Guide Bush (STD or O/S 0.05)
      Bush Size Bush Bore Diameter
      STD 10.285 to 10.306 mm (0.40492 to 0.40575 in.)
      O/S 0.05 10.335 to 10.356 mm (0.40689 to 0.40772 in.)

      If the bush bore diameter of the cylinder head is greater than 10.306 mm (0.40575 in.), machine the bush bore to the dimension of 10.335 to 10.356 mm (0.40689 to 0.40772 in.) to install an O/S 0.05 valve guide bush. If the bush bore diameter of the cylinder head is greater than 10.356 mm (0.40772 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.

    7. A005JBCE01

      Using SST and a hammer, tap a new guide bush into the specified protrusion height.

      SST
      09201-10000   ( 09201-01050 )
      09950-70010   ( 09951-07100 )
      Protrusion height
      9.6 to 10.0 mm (0.378 to 0.394 in.)
    8. A005KGE

      Using a sharp 5.5 mm reamer, ream the guide bush to obtain the standard clearance between the guide bush and valve stem.

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

  2. REPLACE EXHAUST VALVE GUIDE BUSH


    1. A005IIKE01

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

    2. Place the cylinder head on wooden blocks.

    3. Using SST and a hammer, tap out the guide bush.

      SST
      09201-10000   ( 09201-01050 )
      09950-70010   ( 09951-07100 )
    4. A005LPP

      Using a caliper gauge, measure the bush bore diameter of the cylinder head.

      Standard diameter
      10.285 to 10.306 mm (0.40492 to 0.40575 in.)
      Select a New Guide Bush (STD or O/S 0.05)
      Bush Size Bush Bore Diameter
      STD 10.285 to 10.306 mm (0.40492 to 0.40575 in.)
      O/S 0.05 10.335 to 10.356 mm (0.40689 to 0.40772 in.)

      If the bush bore diameter of the cylinder head is greater than 10.306 mm (0.40575 in.), machine the bush bore to the dimension of 10.335 to 10.356 mm (0.40689 to 0.40772 in.) to install an O/S 0.05 valve guide bush. If the bush bore diameter of the cylinder head is greater than 10.356 mm (0.40772 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.

    7. A005J9ZE01

      Using SST and a hammer, tap a new guide bush into the specified protrusion height.

      SST
      09201-10000   ( 09201-01050 )
      09950-70010   ( 09951-07100 )
      Protrusion height
      9.6 to 10.0 mm (0.378 to 0.394 in.)
    8. A005JEO

      Using a sharp 5.5 mm reamer, ream the guide bush to obtain the standard clearance between the guide bush and valve stem.

      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 pins unless they are being replaced.

    A005IC2E01

    1. Remove the ring pins.

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

      Text in Illustration
      *a Upper Side
      Protrusion Height
      Item Protrusion Height
      Ring pin A 6.0 to 8.0 mm (0.236 to 0.315 in.)
      Ring pin B 4.0 to 6.0 mm (0.157 to 0.236 in.)

  4. REPLACE STUD BOLT

    Note

    If any of the stud bolts is deformed or the threads are damaged, replace it.


    1. Using "TORX" socket wrenches E5 and E8, remove the stud bolts.

      A005H19E04
      Text in Illustration
      *a Intake Side *b Exhaust Side
      *c Front Side - -

    2. Using "TORX" socket wrenches E5 and E8, install the stud bolts.

      Torque:
      Stud bolt A and B
      7.5 N*m  { 76 kgf*cm, 66 in.*lbf }
      Stud bolt C
      5.0 N*m  { 51 kgf*cm, 44 in.*lbf }