Piston, Pin, and Connecting Rod Replacement: Inspection

NOTE: Inspect each piston, piston pin, and connecting rod when they are at room temperature.

Measure the diameter of the piston pin.
Piston Pin Diameter

Standard (New): 21.962-21.965 mm (0.8646-0.8648 in.)

Service Limit: 21.954 mm (0.8643 in.)

Fig 1: Measuring Diameter Of Piston Pin
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Zero the dial indicator to the piston pin diameter.

Fig 2: Measuring Piston Pin Diameter
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check the difference between the piston pin diameter and piston pin hole diameter on the piston.
Piston Pin-to-Piston Clearance

Standard (New): -0.0050 to +0.0010 mm (-0.00020 to +0.00004 in.)

Service Limit: 0.004 mm (0.0002 in.)

Fig 3: Measuring Difference Between Piston Pin Diameter And Piston Pin Hole Diameter
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the piston pin-to-connecting rod clearance.
Piston Pin-to-Connecting Rod Clearance

Standard (New): 0.005-0.014 mm (0.0002-0.0006 in.)

Service Limit: 0.019 mm (0.0007 in.)

Fig 4: Measuring Piston Pin-To-Connecting Rod Clearance
Courtesy of AMERICAN HONDA MOTOR CO., INC.