Piston Ring: Service and Repair

CAUTION: You must use a piston ring expander to remove and install the piston rings. Only expand the rings far enough to fit over the piston lands. If the rings re overexpanded, the top ring will shatter and the others will distort.

REMOVAL
1. Remove the piston rings using a piston ring expander.
2. Place each ring in a clean shop towel for storage.

INSTALLATION
1. Using a piston ring expander, install the oil control ring assembly using the following procedure:
a. Install the expander ring (1).
b. Install the two oil scraper rings (2). Expand the rings only enough to clear the piston diameter. Overexpanding the piston rings will distort or crack the rings.
2. Install the second (3) and top piston (4) rings using the piston ring expander. Make sure you do not overexpand the rings.
3. Once the rings are installed, set the ring gaps at least 30 degrees apart from each other.