Piston Ring Side Clearance
- Measure the side clearance of piston ring and piston ring groove with a feeler gauge (A).
Standard:
Top ring : 0.04 - 0.08 mm (0.002 - 0.003 in)
2nd ring : 0.03 - 0.07 mm (0.001 - 0.003 in)
Oil ring : 0.015 - 0.185 mm (0.001 - 0.007 in)
Limit:
Top ring : 0.11 mm (0.0043 in)
2nd ring : 0.10 mm (0.0039 in)
- If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit, replace piston also.