CAMSHAFT INSPECTION

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1. Set the No.1 and No.5 journals of the camshaft on V-blocks.

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2. Measure the camshaft runout using a dial gauge.

  • If it exceeds the maximum specification, replace the camshaft.

  Maximum runout

  0.03 mm {0.001 in}

3. Measure the cam lobe height as shown using the micrometer.

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  • If it is less than the minimum specification, replace the camshaft.

Standard cam lobe height (mm {in})

Camshaft | ZJ | ZY, Z6
--- | --- | ---
IN | 41.373 {1.6289}
EX | 40.597 {1.5983} | 41.495 {1.6337}

Minimum cam lobe height (mm {in})

Camshaft | ZJ | ZY, Z6
--- | --- | ---
IN | 41.30 {1.6260}
EX | 40.53 {1.5957} | 41.43 {1.6311}

4. Measure the journal diameter using the micrometer. Measurement positions total four, and they are in the X and Y directions, at the two points (A and B) as shown in the figure.

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  • If it is less than the minimum specification, replace the camshaft.

  Standard journal diameter

  25.950—25.975 mm {1.022—1.023 in}

  Minimum journal diameter

  24.910 mm {0.9807 in}

5. Measure the camshaft journal oil clearance using a plastigauge with the tappet removed.

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  Note
  • Clean the camshaft journal and the journal receptacle part.
  • Cut the plastigauge to the same length as the journal width and position it in parallel to the camshaft.

  • If it exceeds the specification, replace the cylinder head.

  Standard oil clearance

  0.034—0.080 mm {0.0014—0.0031 in}

  Maximum oil clearance

  0.09 mm {0.0035 in}

6. Measure the camshaft end play using a dial gauge.

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  • If it exceeds the maximum specification, replace the cylinder head or the camshaft.

  Standard end play

  0.07—0.19 mm {0.0027—0.0074 in}

  Maximum end play

  0.20 mm {0.0078 in}