Do not expand the piston rings any more than is necessary to allow them to be
installed on the piston. The rings are brittle and will break if expanded too much.
Make sure all piston rings are fitted in their original locations (if original rings are
being reused) or to the piston/bore which the end gaps were checked (if new rings are
being fitted).
1. Make sure the piston ring grooves are clean.
2. Fit the oil control ring expander to the piston then install the upper and lower control
rings (the oil control rings are both the same and can be fitted either way up).
The second and top compression rings are different and are not interchangeable.
Make sure the second and top compression rings are correctly installed.
3. Fit the second compression ring carefully to the piston, ensuring its 2R mark is facing
upwards.
4. Fit the top compression ring to the piston ensuring its 1R mark is facing upwards.
Piston Ring Identification
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