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: 21.953 mm (0.86429 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: Positioning Dial Indicator To Zero For Piston Pin Diameter
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): -0.005-0.002 mm (-0.00020-0.00008 in)

Service Limit: 0.005 mm (0.00020 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: 0.02 mm (0.0008 in)

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