CYLINDER HEAD REPLACEMENT

PROCEDURE


  1. REPLACE INTAKE VALVE GUIDE BUSH


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

    2. Place the cylinder head sub-assembly on wooden blocks.

    3. A018KTCE04

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

      SST
      09201-01055
      09950-70010   ( 09951-07100 )
    4. A018LSA

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

      Standard Intake Valve Guide Bush Bore Diameter
      10.285 to 10.306 mm (0.405 to 0.406 in.)
      Select a new intake valve guide bush (STD or O/S 0.05)
      Bush Size Bush Bore Diameter
      STD 10.333 to 10.344 mm (0.4068 to 0.4072 in.)
      O/S 0.05 10.383 to 10.394 mm (0.4088 to 0.4092 in.)

      If the intake valve guide bush bore diameter is more than 10.306 mm (0.4057 in.), machine the intake valve guide bush bore to a dimension of 10.335 to 10.356 mm (0.4069 to 0.4077 in.) to install an O/S 0.05 intake valve guide bush.

      If the intake valve guide bush bore diameter of the cylinder head sub-assembly is more than 10.356 mm (0.4077 in.), replace the cylinder head sub-assembly.

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

    6. A018JG4C12
      *a Height

      Using SST and a hammer, tap in the selected intake valve guide bush.

      SST
      09201-10000   ( 09201-01050 )
      09950-70010   ( 09951-07100 )
      Standard Protrusion Height
      14.8 to 15.2 mm (0.583 to 0.598 in.)
    7. A018IOT

      Using a sharp 5.5 mm reamer, ream the intake valve guide bush to obtain the standard oil 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 sub-assembly to approximately 80 to 100°C (176 to 212°F).

    2. Place the cylinder head sub-assembly on wooden blocks.

    3. A018K0LE01

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

      SST
      09201-01055
      09950-70010   ( 09951-07100 )
    4. A018LGO

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

      Standard Exhaust Valve Guide Bush Bore Diameter
      10.285 to 10.306 mm (0.405 to 0.406 in.)
      Select a new exhaust valve guide bush (STD or O/S 0.05)
      Bush Size Bush Bore Diameter
      STD 10.333 to 10.344 mm (0.4068 in 0.4072 in.)
      O/S 0.05 10.383 to 10.394 mm (0.4088 to 0.4092 in.)

      If the exhaust valve guide bush bore diameter is more than 10.306 mm (0.4057 in.), machine the exhaust valve guide bush bore to a dimension of 10.335 to 10.356 mm (0.4069 to 0.4077 in.) to install an O/S 0.05 exhaust valve guide bush.

      If the exhaust valve guide bush bore diameter of the cylinder head sub-assembly is more than 10.356 mm (0.4077 in.), replace the cylinder head sub-assembly.

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

    6. A018HLLC05
      *a Height

      Using SST and a hammer, tap in the selected exhaust valve guide bush.

      SST
      09201-10000   ( 09201-01050 )
      09950-70010   ( 09951-07100 )
      Standard Protrusion Height
      14.2 to 14.6 mm (0.559 to 0.575 in.)
    7. A018LC9

      Using a sharp 5.5 mm reamer, ream the exhaust valve guide bush to obtain the standard oil 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 pins unless they are being replaced.


    1. Remove the 2 ring pins.

    2. A018IDXE01
      *1 6.5 to 7.5 mm

      Using a plastic hammer, tap in 2 new ring pins to the cylinder head sub-assembly.

      Standard Protrusion Height
      6.5 to 7.5 mm (0.256 to 0.295 in.)