Engine Assembly (Rev 1/97)
68
Assemble Piston and Rod
14. Each piston has three piston rings.
a.
The top ring is a barrel faced compression ring.
b. The middle ring is compression ring with a tapered
face.
c.
The bottom ring is an oil ring with a separate inter-
nal expander.
Ring Placement
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15. Before installing the piston rings, check the end gap of
each ring. Place a ring in its respective cylinder. Level
the ring in the cylinder with a piston and check the end
gap with a feeler gauge. If the end gap is not correct
(refer to Specifications), check to make sure that the
cylinder bore is the correct size and that the ring is the
correct size.
Check End Gap
16. Place the piston rings on their respective pistons in the
proper order. Use a ring spreader to install the rings, but
do not spread the rings more than necessary. The manu-
facturer’s mark near the end gap of each ring should
always face the top of the piston.
Oil Ring Installation
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