Piston Ring: Service and Repair

WARNING: Handle the piston carefully. Worn piston rings are sharp and may cause bodily injury.

DISASSEMBLE
1. Disassemble the piston rings. Use a suitable tool in order to expand the rings. Piston rings must not be reused.

CAUTION: Ensure that no load is put on the piston during disassembly.

ASSEMBLE
1. Install the following parts of the oil control ring assembly:
^ The expander
^ The lower oil control ring
^ The upper oil control ring

CAUTION: Use a piston ring expander to install the piston rings. The rings may be damaged if expanded more than necessary. In order to provide an effective compression seal, the ring gaps must be staggered.

2. Install the upper and lower compression ring with the manufacturer's mark facing up.