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
1. Standard (New): 21.962 21.965 mm (0.8646-0.8648 in.)
2. 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: Zeroing Dial Indicator
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
1. Standard (New): 0.0050 to +0.0010 mm (-0.00020 to + 0.00004 in.)
2. Service Limit: 0.004 mm (0.0002 in.)
Fig 3: Checking Difference Between Piston Pin Diameter & Piston Pin Hole Diameter On Piston
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the piston pin-to-connecting rod clearance.
Piston Pin-to-Connecting Rod Clearance
1. Standard (New): 0.005-0.014 mm (0.0002-0.0006 in.)
2. Service Limit: 0.019 mm (0.0007 in.)
Fig 4: Measuring Piston Pin-To-Connecting Rod Clearance
Courtesy of AMERICAN HONDA MOTOR CO., INC.