Piston Ring: Testing and Inspection
INSPECTION
End Gap
- Insert ring from top and slide down until approx. 15 mm (0.59 inch) from lower edge of cylinder.
- Specifications:
Ring 1:
End Gap: 0.35 - 0.50 mm (0.014 - 0.020 inch).
Wear Limit: 1.0 mm (0.039 1nch).
Ring 2:
End Gap: 0.50 - 0.70 mm (0.020 - 0.028 inch).
Wear Limit: 1.4 mm (0.055 1nch).
Ring 3:
End Gap: 0.25 - 0.50 mm (0.010 - 0.020 inch).
Wear Limit: 0.8 mm (0.032 1nch).
Side Clearance
- Before checking, clean ring groove.
- Check piston ring clearance in groove.
New: 0.02-0.08 mm (0.001-0.003 inch).
Wear limit: 0.10 mm (0.004 inch).