ENGINE UNIT > INSPECTION

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1. INSPECT NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY


    A198477

  1. Turn the roller by hand to check that it turns smoothly.

    HINT:
    If the roller does not turn smoothly, replace the valve rocker arm sub-assembly.



2. INSPECT CHAIN SUB-ASSEMBLY


    A093269E03

  1. Using a spring scale, apply 140 N (14.3 kgf, 31 lbf) to the timing chain then measure its length.

    Maximum chain length:
    156.5 mm (6.161 in.)

    If the length is greater than the maximum, replace the chain.

    HINT:
    Measure the length in at least 3 places and calculate the average length.



3. INSPECT NO.2 CHAIN SUB-ASSEMBLY


    A093269E03

  1. Using a spring scale, apply 140 N (14.3 kgf, 31 lbf) to the timing chain then measure its length.

    Maximum chain length:
    116.5 mm (4.586 in.)

    If the length is greater than the maximum, replace the No. 2 chain.

    HINT:
    Measure the length in at least 3 places and calculate the average length.



4. INSPECT NO. 1 CHAIN TENSIONER ASSEMBLY


    A198478

  1. Check that the plunger moves smoothly when the cam is raised with your finger.

  1. Release the ratchet pawl and check that the plunger does not move when pushed with your finger.



5. INSPECT CAMSHAFT TIMING SPROCKET


A198479

  1. Wrap the chain around the camshaft timing sprocket.

  1. Using a vernier caliper, measure the diameter of the camshaft timing sprocket including the wrapped chain.

    Minimum sprocket diameter (with chain):
    132.5 mm (5.216 in.)

    NOTICE:
    Vernier caliper must be in contact with the chain rollers when measuring.

    If the diameter is less than the minimum, replace the camshaft timing sprocket.



6. INSPECT CRANKSHAFT TIMING SPROCKET


A198480

  1. Wrap the chain around the crankshaft timing sprocket.

  1. Using a vernier caliper, measure the diameter of the crankshaft timing sprocket including the wrapped chain.

    Minimum sprocket diameter (w/ chain):
    69.0 mm (2.716 in.)

    NOTICE:
    Vernier caliper must be in contact with the chain rollers when measuring.

    If the diameter is less than the minimum, replace the crankshaft timing sprocket.



7. INSPECT OIL PUMP DRIVE GEAR


A198481

  1. Wrap the chain around the oil pump drive gear.

  1. Using a vernier caliper, measure the diameter of the oil pump drive gear including the wrapped chain.

    Minimum sprocket diameter (w/ chain):
    57.6 mm (2.267 in.)

    NOTICE:
    Vernier caliper must be in contact with the chain rollers when measuring.

    If the diameter is less than the minimum, replace the oil pump drive gear.



8. INSPECT OIL PUMP DRIVE SHAFT GEAR


A198482

  1. Wrap the chain around the oil pump drive shaft gear.

  1. Using a vernier caliper, measure the diameter of the oil pump drive shaft gear including the wrapped chain.

    Minimum sprocket diameter (w/ chain):
    53.5 mm (2.106 in.)

    NOTICE:
    Vernier caliper must be in contact with the chain rollers when measuring.

    If the diameter is less than the minimum, replace the oil pump drive shaft gear.



9. INSPECT CHAIN TENSIONER SLIPPER


A198483E01

  1. Using a vernier caliper, measure the thickness of the chain tensioner slipper.

    Maximum wear:
    1.0 mm (0.039 in.)

    If the thickness is greater than the maximum, replace the chain tensioner slipper.



10. INSPECT NO. 1 CHAIN VIBRATION DAMPER


A198484E01

  1. Using a vernier caliper, measure the thickness of the chain vibration damper.

    Maximum wear:
    1.0 mm (0.039 in.)

    If the thickness is greater than the maximum, replace the chain vibration damper.



11. INSPECT CHAIN TENSIONER PLATE


A198485E01

  1. Using a vernier caliper, measure the thickness of the chain tensioner plate.

    Maximum wear:
    1.0 mm (0.039 in.)

    If the thickness is greater than the maximum, replace the chain tensioner plate.



12. INSPECT CAMSHAFT


    A068048

  1. Inspect the circle runout.

    1. Place the camshaft on V-blocks.

    2. Using a dial indicator, measure the circle runout of the camshaft at the center journal.

      Maximum circle runout:
      0.03 mm (0.0012 in.)

      If the circle runout is greater than the maximum, replace the camshaft.



    EM02011

  1. Inspect the height of the cam lobes.

    1. Using a micrometer, measure the cam lobe height.

      Standard cam lobe height:
      34.484 to 34.584 mm (1.3576 to 1.3616 in.) for intake
      34.773 to 34.873 mm (1.3690 to 1.3730 in.) for exhaust

      Minimum cam lobe height:
      34.064 mm (1.3411 in.) for intake
      34.353 mm (1.3525 in.) for exhaust

      If the cam lobe height is less than the minimum, replace the camshaft.



    EM02538

  1. Inspect the diameter of the cam journals.

    1. Using a micrometer, measure the cam journal diameter.

      Journal diameter:
      23.979 to 23.995 mm (0.9441 to 0.9447 in.)

      If the cam journal diameter is not as specified, check the oil clearance.



13. INSPECT CYLINDER HEAD SET BOLT


    G036745E03

  1. Using a vernier caliper, measure the minimum outer diameter of the compressed thread at the measuring point.

    Standard outer diameter:
    11.5 to 12.0 mm (0.453 to 0.472 in.)

    Minimum outer diameter:
    11.2 mm (0.440 in.)

    If the outer diameter is less than the minimum, replace the cylinder head bolt.