Piston Ring: Testing and Inspection

PISTON RINGS
To measure end gap, insert piston ring into cylinder bore and then measure the gap by using thickness gauge. If measured gap is out of specification, replace ring.
Piston Ring End Gap:
Top Ring:
Standard: 0.2 - 0.35 mm (0.0079-0.0137 inch)
Limit: 0.7 mm (0.0275 inch)
2nd Ring:
Standard: 0.2 - 0.35 mm (0.0079 - 0.0137 inch)
Limit: 0.7 mm (0.0275 inch)
Oil Ring;
Standard: 0.2 - 0.7 mm (0.0079 - 0.0275 inch)
Limit: 1.7 mm (0.0669 inch)

NOTE: Decarbon and clean top of cylinder bore before inserting piston ring.