Connecting Rods and Pistons/Pistons and Connecting Rods 4. Install oil ring expander in bottom piston ring groove. Turn expander so ends are above either end of the piston pin. 5. Install oil ring over expander with a piston ring expander. Turn oil ring so ends are on opposite side of piston from the expander ends. M36392 -UN-29JAN90 M98,2030K,36 -19-10OCT85 CTM2 (19APR90) 30-22 16, 18, 20 & 24HP Onan Engines AllTractorManuals.com 130495 6. Install second ring in middle groove, with chamfer (A) toward bottom of piston, or with dot (B) toward top of piston (T260 only). 7. Install compression ring in top groove, with dot (B) toward top of piston.
-UN-29JAN90 M36406 -UN-29JAN90 M36404 M98,2030K,37 -19-10OCT85 30 22