CYLINDER HEAD REPLACEMENT

PROCEDURE


  1. REPLACE INTAKE VALVE GUIDE BUSH


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

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

    3. A01XJZVE01

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

      SST
      09201-01055
      09950-70010   ( 09951-07100 )

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

      Standard Bush Bore Diameter
      Item Specified Condition
      STD 10.285 to 10.306 mm (0.405 to 0.406 in.)
      O/S 0.05 10.335 to 10.356 mm (0.407 to 0.408 in.)

      If the bush bore diameter of the cylinder head sub-assembly is more than 10.306 mm (0.406 in.), machine the bush bore so that the diameter is between 10.335 and 10.356 mm (0.407 and 0.408 in.).

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

    5. Select a new intake valve guide bush.

      New Valve Guide Bush
      Item Specified Condition
      Bush Bore Diameter 10.333 to 10.344 mm (0.4068 to 0.4072 in.) 10.383 to 10.394 mm (0.4088 to 0.4092 in.)
      Use Bush STD O/S 0.05

      Tech Tips

      Standard bush length: 43.0 to 44.0 mm (1.69 to 1.73 in.)

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

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

    8. A01XDLJE05
      Text in Illustration
      *a Height

      Using SST and a hammer, tap in a new intake valve guide bush to the specified protrusion height.

      SST
      09201-01055
      09950-70010   ( 09951-07100 )
      Standard protrusion height
      9.8 to 10.2 mm (0.386 to 0.402 in.)
    9. A01XFZY

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

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

    3. A01XDLPE04

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

      SST
      09201-01055
      09950-70010   ( 09951-07100 )

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

      Standard Bush Bore Diameter
      Item Specified Condition
      STD 10.285 to 10.306 mm (0.405 to 0.406 in.)
      O/S 0.05 10.335 to 10.356 mm (0.407 to 0.408 in.)

      If the bush bore diameter of the cylinder head sub-assembly is more than 10.306 mm (0.406 in.), machine the bush bore so that the diameter is between 10.335 and 10.356 mm (0.407 and 0.408 in.).

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

    5. Select a new exhaust valve guide bush.

      New Valve Guide Bush
      Item Specified Condition
      Bush Bore Diameter 10.333 to 10.344 mm (0.4068 to 0.4072 in.) 10.383 to 10.394 mm (0.4088 to 0.4092 in.)
      Use Bush STD O/S 0.05

      Tech Tips

      Standard bush length: 43.0 to 44.0 mm (1.69 to 1.73 in.)

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

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

    8. A01XKNBE05
      Text in Illustration
      *a Height

      Using SST and a hammer, tap in a new exhaust valve guide bush to the specified protrusion height.

      SST
      09201-01055
      09950-70010   ( 09951-07100 )
      Standard protrusion height
      7.6 to 8.0 mm (0.299 to 0.315 in.)
    9. A01XFIR

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

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

  3. REPLACE CAMSHAFT BEARING CAP SETTING RING PIN

    Note

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

    A01XCDIE03

    1. Remove the ring pins.

    2. Using a plastic-faced hammer, tap in a new ring pin until the pin stops.

      Standard Ring Pin
      Item Height Width Protrusion Height
      Ring pin 7 mm (0.276 in.) 10 mm (0.394 in.) 2.5 to 3.8 mm (0.0984 to 0.150 in.)
      Text in Illustration
      *a Height
      *b Width
      *c Protrusion Height