Piston Pin Clearance Inspection

PISTON PIN CLEARANCE INSPECTION





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 19.988 - 20.000 mm (0.7870 - 0.7874 inch)





2. Measure each connecting rod small end inner diameter in X and Y directions as shown.
Standard diameter 20.003 - 20.014 mm (0.7876 - 0.7879 inch)





3. Measure each piston pin diameter in X and Y directions at the four points (A, B, C, and D) as shown.
Standard diameter 19.987 - 19.993 mm (0.7869 - 0.7871 inch)
4. Calculate the piston pin-to-piston pin bore clearance.
^ If the piston pin-to-piston pin bore clearance is not as specified, replace piston and/or the piston pin.
Standard clearance -0.005 - 0.013 mm (-0.0002 - 0.0005 inch)
5. Calculate the connecting rod small end-to-piston pin clearance.
^ If the connecting rod small end-to-piston pin clearance is not as specified, replace the connecting rod or piston pin.
Standard clearance 0.01 - 0.027 mm (0.004 - 0.0010 inch)