Piston Ring: Service and Repair

PISTON RING PLACEMENT

Fig. 33 Installing Three Piece Oil Rings:

Fig. 34 Positioning Ring End Gap:

1. Install three piece oil rings on pistons as follows:
a. Apply engine oil to oil ring spacer and rails.
b. Install oil ring spacer so that opening faces upward.
c. Install upper and lower rails. Upper and lower rail are identical and can be installed with either face upward.
2. Check that both rails are expanded by the spacer tangs, Fig. 33, by checking that both rails turn smoothly in both directions.
3. Install second ring to piston first, then install top ring. Rings must be installed with R marks facing upward.
4. Apply a liberal amount of clean engine oil to second and top piston rings.
5. Position opening of each ring as shown, Fig. 34.