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P a g e
INSTRUCTIONS
1.
Mount this tool on a suitable work surface with the included mounting bracket for best results.
2.
Insert the turning handle in the tool and secure with the set screw.
3.
Place the piston ring on the outer edge against the stop and the ends squarely against the grinding wheel. A light, even pressure
against the wheel works best and will help prevent grinding too large a gap in one go.
4.
Turn the handle so the grinding wheel turns towards the inside edge of the ring (counter-clockwise when viewed from the handle
side of the tool).
CAUTION: this grinding disc is 120 GRIT and cuts very fast
5.
Once you have cut down the piston ring and done a few revolutions on the
tool. It’s time to check your r
ing gap.
6.
Carefully remove any burrs on the ring ends before placing the ring in the bore. A light touch with a fine abrasive stone works well.
7.
It is a good idea to clean the rings thoroughly as the paint coating from the factory may scratch the cylinder bore.
8.
Place the ring squarel
y in the cylinder bore, about 25mm ( 1” )
down from the deck surface. An upside down flat top piston will help
you properly square the ring or purchase a piston ring squaring tool sold separately.
9.
Use a feeler gauge to measure the ring's end gap. Light grinding pressure and frequent checking will help prevent you from making
the end gap too large.
AF59-2099
For more information or technical enquires
Contact: Aeroflow Performance on