ENGINE UNIT INSPECTION

PROCEDURE


  1. INSPECT CHAIN SUB-ASSEMBLY

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    Text in Illustration
    *a Measuring Area

    1. Using a spring scale, apply 140 N (14.3 kgf, 31.5 lb) to the timing chain and measure its length.

      Maximum chain elongation
      123.2 mm (4.850 in.)

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

      Tech Tips

      Perform the same measurement at 3 or more random places and calculate the average length.

  2. INSPECT NO. 1 CHAIN TENSIONER ASSEMBLY

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

    2. Release the ratchet pawl and check that the plunger is locked in place by the ratchet pawl and does not move when pushed with your finger.

  3. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY

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    1. Wrap the chain around the timing sprocket.

    2. Using vernier calipers, measure the diameter of the timing gear with the chain.

      Minimum gear diameter (with chain)
      96.2 mm (3.787 in.)

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

      Note

      Make sure that the vernier calipers are in contact with the chain link when measuring.

  4. INSPECT CAMSHAFT TIMING SPROCKET

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    1. Wrap the chain around the timing sprocket.

    2. Using vernier calipers, measure the diameter of the timing gear with the chain.

      Minimum gear diameter (with chain)
      96.2 mm (3.787 in.)

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

      Note

      Make sure that the vernier calipers are in contact with the chain link when measuring.

  5. INSPECT CHAIN TENSIONER SLIPPER

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    1. Check the chain tensioner slipper.

      Minimum thickness
      1.0 mm (0.039 in.)

      If the thickness is less than the minimum, replace the chain tensioner slipper.

  6. INSPECT NO. 1 CHAIN VIBRATION DAMPER

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    1. Check the vibration damper.

      Minimum thickness
      1.0 mm (0.039 in.)

      If the thickness is less than the minimum, replace the chain vibration damper.

  7. INSPECT CYLINDER HEAD SET BOLT

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    Text in Illustration
    *a Underhead Length

    1. Using vernier calipers, measure the length of head bolts from the seat to the end.

      Standard length
      143.5 mm (5.6496 in.)
      Maximum length
      145 mm (5.7087 in.)

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