Piston, Pin, and Connecting Rod Replacement: Inspection

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

Measure the diameter of the piston pin.
Piston Pin Diameter

Standard (New): 16.961 - 16.965 mm (0.6678-0.6679 in.)

Service Limit: 16.953 mm (0.6674 in.)

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

Fig 2: Identifying Zero Dial Indicator To Piston Pin Diameter
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check the difference between the piston pin diameter and piston pin hole diameter in the piston.
Piston Pin-to-Piston Clearance

Standard (New): -0.0050 to +0.0020 mm (-0.00020 to +0.00008 in.)

Service Limit: 0.006 mm (0.0002 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): 0.016-0.033 mm (0.0006-0.0013 in.)

Service Limit: 0.038 mm (0.0015 in.)

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