Piston Ring
- Check for side clearance.
If the limit is exceeded, replace the ring or piston, or both.
Standard value:
No.1: 0.03 - 0.07 mm (0.0012 - 0.0028 inch)
No.2: 0.02 - 0.06 mm (0.0008 - 0.0024 inch)
Limit:
No.1: 0.1 mm (0.0039 inch)
No.2: 0.1 mm (0.0039 inch)
- Install the piston ring into the cylinder bore. Force the ring down with a piston, the piston crown being in contact with the ring, to correctly position it at right angles to the cylinder wall. Then, measure the end gap with a feeler gauge. If the end gap is excessive, replace the piston ring.
Standard value:
No.1 ring: 0.20 - 0.30 mm (0.0079 -0.0118 inch)
No.2 ring: 0.35 - 0.50 mm (0.0128 -0.0197 inch)
Oil ring: 0.10 - 0.40 mm (0.0039 -0.0157 inch)
Limit:
No.1, No.2 ring: 0.8 mm (0.031 inch)
Oil ring: 1.0 mm (0.039 inch)