PISTON PIN INSPECTION

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Caution
•  If the piston or piston pin is replaced, replace the piston, piston pin and the snap ring as a single component.

1.  Measure the piston pin outer diameter using the micrometer. Measurement positions total eight and are in the X and Y directions, at four points (A, B, C, and D) as shown in the figure.

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Standard piston pin outer diameter
SKYACTIV-G 1.3, SKYACTIV-G 1.5: 17.995—18.000 mm {0.70847—0.70866 in}
SKYACTIV-G 2.0, SKYACTIV-G 2.5: 20.995—21.000 mm {0.82658—0.82677 in}

2.  Measure the piston pin hole diameter using the caliper gauge. Measurement positions total eight and are in the X and Y directions, at four points (A, B, C, and D) as shown in the figure.

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Standard piston pin hole diameter
SKYACTIV-G 1.3, SKYACTIV-G 1.5: 18.004—18.008 mm {0.70882—0.70897 in}
SKYACTIV-G 2.0, SKYACTIV-G 2.5: 21.004—21.008 mm {0.82693—0.82708 in}

3.  Calculate the clearance between the piston pin hole diameter and the piston pin outer diameter.

•  If it is not within the specification, replace the piston or the piston pin.
Standard clearance between piston pin hole diameter and piston pin outer diameter
0.004—0.013 mm {0.0002—0.0005 in}

4.  Measure the inner diameter on the small end of the connecting rod using the caliper gauge in the X and Y directions as shown in the figure.

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Note
•  There are two types of connecting rods for the SKYACTIV-G 2.0, and the inner diameters on the small ends differ.
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Standard connecting rod small end inner diameter [SKYACTIV-G 1.3, SKYACTIV-G 1.5]
18.002—18.013 mm {0.70875—0.70917 in}
Standard connecting rod small end inner diameter [SKYACTIV-G 2.0]
Connecting rod type A: 21.006—21.017 mm {0.82701—0.82744 in}
Connecting rod type B: 21.002—21.013 mm {0.82686—0.82728 in}
Standard connecting rod small end inner diameter [SKYACTIV-G 2.5]
21.002—21.013 mm {0.82686—0.82728 in}

5.  Calculate the clearance between the inner diameter on the small end of the connecting rod and the piston pin outer diameter.

•  If it is not within the specification, replace the connecting rod or the piston pin.
Standard clearance between connecting rod small end inner diameter and piston pin outer diameter [SKYACTIV-G 1.3, SKYACTIV-G 1.5]
0.002—0.018 mm {0.00008—0.00070 in}
Standard clearance between connecting rod small end inner diameter and piston pin outer diameter [SKYACTIV-G 2.0]
Connecting rod type A: 0.006—0.022 mm {0.0003—0.0008 in}
Connecting rod type B: 0.002—0.018 mm {0.00008—0.00070 in}
Standard clearance between connecting rod small end inner diameter and piston pin outer diameter [SKYACTIV-G 2.5]
0.002—0.018 mm {0.00008—0.00070 in}