Piston Pins

REMOVAL





1. Assemble the special tool as shown.





2. Assemble and adjust the length of the piston pin driver and shaft to 53 mm (2.1 inch) as shown.

3. Place the piston on the special tool and press the pin out with the special tools and a hydraulic press.

INSPECTION





1. Measure the diameter of the piston pin.

Piston Pin Diameter:
B16A2 engine:
Standard (New): 20.994 - 21.000 mm (0.8265 - 0.8268 inch)
Oversize: 20.997 - 21.003 (0.8267 - 0.8269 inch)
D16Y5, D16Y7, D16Y8 engines:
Standard (New): 18.994 - 19.000 mm (0.7478 - 0.7480 inch)
Oversize: 18.997 - 19.003 (0.7479 - 0.7481 inch)

NOTE: All replacement piston pins are oversize.





2. Zero the dial indicator to the piston pin diameter.





3. Measure the piston pin-to-piston clearance.

NOTE: Check the piston for distortion or cracks.

If the piston pin clearance is greater than 0.024 mm (0.0009 inch), remeasure using an oversized piston pin.

Piston Pin-to-Piston Clearance:
Standard (New): 0.010 - 0.022 mm (0.0004 - 0.0009 inch)





4. Check the difference between the piston pin diameter and the connecting rod small end diameter.

Piston Pin-to-Connecting Rod Interference:
B16A2 engine:
Standard (New): 0.013 - 0.032 mm (0.0005 - 0.0013 inch)
D16Y5, D16Y7, D16Y8 engines:
Standard (New): 0.014 - 0.040 mm (0.0006 - 0.0016 inch)

INSTALLATION





1. Use a hydraulic press for installation.
- When pressing the pin in or out, be sure you position the recessed flat on the piston against the lugs on the base attachment.