Piston Ring Installation
Piston RingInstallation Procedure
Notice: Use a piston ring expander to install the piston rings. The rings may be damaged if expanded more than necessary.
1. Install the piston rings using a piston ring installer.
2. Properly orient the oil control ring expander as shown before installation. The ends of the expander must be facing toward the top of the piston.
3. Install the oil control piston ring spacer onto the piston.
4. Install the lower oil control piston ring onto the piston (1).
5. Install the upper oil control piston ring onto the piston (1).
6. Space the oil control piston ring end gaps (1, 2) a minimum of 90 degrees apart.
7. Install the lower compression piston ring onto the piston (1). The mark on the side of the piston ring should face the top of the piston.
8. Install the upper compression piston ring onto the piston. The top compression ring may be installed with either side up.
9. Once the rings are installed, set the ring gaps for the oil control, second and top rings in the positions shown:
9.1. Oil control ring expander and second compression ring gaps position 1.
9.2. Upper oil control ring gap position 2.
9.3. Top compression ring gap position 3.
9.4. Lower oil control ring gap position 4.