1.Measure each piston pin hole diameter in X and Y directions at the four points (A, B, C, and D) as shown.
Standard diameter
2. Measure each connecting rod small end inner diameter in X and Y directions as shown.
Standard diameter
3. Measure each piston pin diameter in X and Y directions at the four points (A, B, C, and D) as shown.
Standard diameter
4. Calculate the piston pin-to-piston pin bore clearance. Replace the piston or piston pin or both if necessary.
Standard clearance5. Calculate the clearance between connecting rod small end and piston pin. Replace the connecting rod or piston pin if necessary.
Standard clearance