The piston ring end gap must be measured in the cylinder bore to which the piston
ring will be fitted to on installation.
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 installed).
1. Check each piston ring end gap as follows.
• Position the piston ring into the top of the cylinder bore.
• Using the piston crown, push the piston ring down into the bore (the piston
will keep the piston ring square) until the third groove of the piston is level
with the top of the bore.
• Remove the piston and measure the gap between the ends of the piston ring,
using a feeler gauge.
1. Checking piston ring end gap
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