PISTON PIN INSPECTIONSM1759383
PISTON PIN INSPECTION

E6U011011010E03

1.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.
ADJ2224E253
Standard piston pin hole diameter
22.504-22.508 mm {0.8860-0.8861 in}

2.Measure the inner diameter on the small end of the connecting rod 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.
ADJ2224E2542
Standard connecting rod small end inner diameter
22.510-22.521 mm {0.8863-0.8866 in}

3.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.
ADJ2224E2553
Standard piston pin outer diameter
22.495-22.500 mm {0.8857-0.8858 in}

4.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 outer diameter
0.004-0.013 mm {0.0002-0.0005 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
0.010-0.026 mm {0.0004-0.0010 in}