Piston, Pin, and Connecting Rod Replacement: Inspection

NOTE: Inspect the piston, the piston pin, and the 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 (0.86464-0.86476 in)

Service Limit: 21.954 mm (0.86433 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: Setting Piston Pin Diameter Using Zero Dial Indicator
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check the difference between the piston pin diameter and the piston pin hole diameter on the piston.
Piston Pin-to-Piston Clearance

Standard (New): -0.005-0.003 mm (-0.00020-0.00012 in)

Service Limit: 0.004 mm (0.00016 in)

Fig 3: Checking Piston Pin-To-Piston Clearance
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 (0.00020-0.00055 in)

Service Limit: 0.019 mm (0.00075 in)

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