Piston Ring(s) - Installation

INSTALLATION





1. Install oil expander ring (1).





2. Install lower oil side rail (1) by placing one end between the piston ring groove and the expander. Hold end firmly and press down the portion to be installed until side rail (1) is in position. Do not use a piston ring expander.





3. Install upper oil side rail (1) by placing one end between the piston ring groove and the expander. Hold end firmly and press down the portion to be installed until side rail (1) is in position. Do not use a piston ring expander.






CAUTION: The top compression (1) and second compression ring (2) piston rings have a different cross section. Install rings with dots facing up, to the top of the piston.






4. Install No. 2 piston ring and then No. 1 piston ring using a piston ring expander.






NOTE: Install the piston rings so the gaps positioned as indicated with the piston viewed from the top.

NOTE: Staggering ring gap is important for oil control.

5. Install the oil expander so the ring gap is located in the (1) position.
6. Install the oil ring rails so the ring gap is located in the (2,4) position.
7. Install the second compression ring so the ring gap is located in the (3) position.
8. Install the top compression so the ring gap is located in the (1) position.