TM 9-2320-365-34-220-6. PISTON AND CONNECTING ROD ASSEMBLY REPLACEMENT/REPAIR (CONT)NOTEOil control ring is to be installed over thespring with the end gap joint 180-degreesfrom oil ring spring.(5) Install oil control ring (7) in bottom groove of pistoncrown (3).(6) Install No. 2 ring (8) in middle groove of piston crown (3)with marking "UP-2" toward top of piston.(7) Install No. 1 ring (9) in top groove of piston crown (3)with marking "UP-1" toward top of piston.(8) Rotate three piston rings (7, 8, and 9) until end gaps are120-degrees apart.(9) Install two connecting rod cap bolts (10) in connectingrod (5).e. Installation.CAUTIONDo not lubricate back side of connecting rodbearings. Failure to comply may result indamage to equipment.NOTELubricate all parts with engine oil prior toinstallation.(1) Lubricate each cylinder bore (1) of cylinder block (2).20-48
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