ENGINE
3.64
PISTON RING INSTALLATION
NOTE: Apply clean engine oil to all ring surfaces and ring lands. Always check piston ring installed gap before
rings are installed on piston. See page 3.43. If the piston has been in service clean any accumulated carbon
from the ring grooves and oil control ring holes.
1. Place the oil control ring expander in oil ring groove with theendgapfacing forward. The expander has noup
or down marking and can be installed either way. The ends should butt squarely together and must not
overlap.
2. Install the oil ring top rail.
NOTE: The top rail has a locating tab to prevent rota-
tion. The tab must be positioned in the notch on the
side of the piston as shown (A).
3. Installthebottomrailwiththegapatleast30° from
the end of the expander on the side opposite the
top rail gap.(See Ill.).
4. Installthe secondring withthe “R”mark facingup.
Position the end gap toward the rear (intake) side
of the piston.
5. Install the top ring (chrome faced) with the “R”
mark facing up and the end gap facing forward
(toward the exhaust). (See Ill.).
6. Check to make sure the rings rotate freely in the
groove when compressed.
A
Ring Profile
Top
Mark up
Mark up
Second
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