Piston Ring: Service and Repair

This article has been updated with bulletin No.: 67-61-08.

OIL RING EXPANDER INSTALLATION REVISION









Whenever removal and installation of the piston rings is necessary, you must install the oil ring expander (Figure 1, # 8) with the ends of the expander facing toward the top of the piston (Figure 2, # 1).

Installing the expander with the ends facing away from the top of the piston could prevent the oil rings from rotating during engine operation. This condition could produce abnormal wear characteristics or affect oil consumption.