Piston Ring(s) - Installation

INSTALLATION





The No. 1 (1) and No. 2 (2) piston rings have a different cross section. Install rings with manufacturers I.D. mark facing up, to the top of the piston.

CAUTION: Install piston rings in the following order:

- Oil ring expander
- Lower oil ring side rail
- Upper oil ring side rail
- No. 2 intermediate piston ring
- No. 1 upper piston ring

1. Install oil ring expander.




2. Install the lower oil ring 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 ring side rail.
4. Install No. 2 piston ring and then No. 1 piston ring.




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.