CAMSHAFT INSPECTION

id011000501500

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

2. Measure the camshaft runout using the dial gauge.

  • If it is not within the specification, replace the camshaft.

b3e0110e074

  Maximum camshaft runout

  0.03 mm {0.0012 in}

3. Measure the cam height using the micrometer as shown in the figure.

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

b3e0110e076

  Cam height

  Standard
  IN : 42.44 mm {1.671 in}
  EX (MZR 2.0 DISI, MZR 2.0 DISI i-stop) : 41.08 mm {1.617 in}
  EX (MZR 2.3 DISI Turbo) : 41.18 mm {1.622 in}
  Minimum
  IN: 42.34 mm {1.667 in}
  EX (MZR 2.0 DISI, MZR 2.0 DISI i-stop) : 40.98 mm {1.613 in}
  EX (MZR 2.3 DISI Turbo) : 41.08 mm {1.617 in}

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

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

beltze00000018

  Camshaft journal diameter

  Standard
  24.96—24.98 mm {0.9827—0.9834 in}
  Minimum
  24.95 mm {0.982 in}

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

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

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

beltze00000019

  Camshaft journal oil clearance

  Standard
  0.04—0.08 mm {0.002—0.003 in}
  Maximum
  0.09 mm {0.0035 in}

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

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

beltze00000020

  Camshaft end play

  Standard
  0.09—0.24 mm {0.0035—0.0094 in}
  Maximum
  0.25 mm {0.0099 in}