Altima XE L4-2.4L (KA24DE) (1999)
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1. Measure inner diameter of piston pin hole "dp".
Standard diameter "dp": 20.987 - 20.999 mm (0.8263 - 0.8267 inch)
2. Measure outer diameter of piston pin "Dp".
Standard diameter "Dp": 20.989 - 21.001 mm (0.8263 - 0.8268 inch)
3. Calculate interference fit of piston pin to piston.
Dp - dp: -0.004 to 0 mm (-0.0002 to 0 inch)
If it exceeds the above value, replace piston assembly with pin.
Piston Ring Side Clearance
Side clearance:
Top ring: 0.040 - 0.080 mm (0.0016 - 0.0031 inch)
2nd ring: 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Max. limit of side clearance: 0.1 mm (0.004 inch)
If out of specification, replace piston ring. If clearance exceeds maximum limit with new ring, replace piston.
Piston Ring End Gap
End gap:
Top ring: 0.28 - 0.52 mm (0.0110 - 0.0205 inch)
2nd ring: 0.45 - 0.69 mm (0.0177 - 0.0272 inch)
Oil ring: 0.20 - 0.69 mm (0.0079 - 0.0272 inch)
Max. limit of end gap: 1.0 mm (0.039 inch)
If out of specification, replace piston ring. If gap exceeds maximum limit with new ring, rebore cylinder and use oversized piston and piston rings.
