Service Information on Piston Ring Installation. Saturn Saturn 1993

For 1990-2009 cars

# Service Information on Piston Ring Installation

Subject: | Service Information on Piston Ring Installation

Models: | 1991 - 1994 Saturn

### Purpose:

The piston ring installation information on page ENEM 230 of the 1991 - 1994 Engine Mechanical Service Manual is not clear. Refer to the piston ring installation information on the following page to help clarify the installation of piston rings on both the SOHC (LKO) and DOHC (LLO) engines

Important: These service procedures will not be included in the 1991 - 1994 Engine Mechanical Service Manual since it has already been printed. Included with this bulletin is a sticker that can be placed on page ENEM 230 of the 1991 - 1994 Engine Mechanical Service Manual according to the following illustration.

### Procedures:

- Using a piston ring expander, install the piston compression rings.

DOHC (LLO) Engines - The first (top) compression ring is installed with the PIP mark facing upward. The second compression ring (identified with a step), is installed with the PIP mark facing upward and the step facing downward.

SOHC (LKO) Engines - The first (top) compression ring can be installed with either side upward. The second compression ring (identified with a step), is installed with the PIP mark facing upward and the step facing download.