Piston: Testing and Inspection

1. Check each piston for scuffing, scoring wear, and other defects.
- Replace any piston that is defective.
2. Check each piston ring for breakage, damage and abnormal wear.
- Replace the defective rings.
- When the piston requires replacement, also replace the rings
3. Check the piston pin fit in the piston pin hole.
- Replace any defective piston and pin assembly that is defective.
- The piston pin must be smoothly pressed by hand into the pin hole (at room temperature).

Bowl Depth (see image):
Standard Value: 0.30-0.50 mm (0.0120-0.0200 inch)