TM 9-2320-363-34-2AIRCOMPRESSORREPAIR(CONT)NOTEOil rings may be installed with either side up.13. WITH DOME OF PISTON (13) UP, INSTALL TWO OIL RINGS (14) IN UPPER OIL RING GROOVEOF PISTON (13).14. INSTALL OIL RING EXPANDER (15) IN OIL RING GROOVE BETWEEN OIL RINGS (14).C A U T I O NDot appearing on one side of second and top piston rings, 30 degrees fromring gap, indicates top of second and top piston rings. Top of second and toppiston rings must be installed facing piston dome to prevent damage toequipment.l15. INSTALL SECOND AND TOP PISTON RINGS (16) IN TOP TWO RING GROOVES OF PISTON (13).12-130
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