TM-9-2815-205-24 Technical Manual for M113 Engine 6V53 6V53T Download
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ASSEMBLY - Continued d. Using piston ring tool, install thick oil control ring (Figure 11, Item 10) in groove D (Figure 11, Item D) (upper groove). Position gap in ring 180 degrees from gap in expander (Figure 11, Item 15). Press ring against gap side of expander to prevent ends of expander from overlapping. Align ring with groove and release tension on remover and replace. NOTE Install fire ring (Figure 11, Item 12) with dark side (with prestress mark) toward top of dome. e. Using piston ring tool and starting from bottom, first install two compression rings (Figure 11, Item 13) and then install fire ring (Figure 11, Item 12). f. Stagger ring gaps around piston a minimum of 90 degrees from each other. 12 18 14 15 15 14 10 D C EXPANDER ENDS AWAY FROM TOP OF DOME BOTTOM OIL CONTROL RINGS (NOTE: EDGE OF TOP RING FACING UP) TOP OIL CONTROL RING TOP 13 MAINT_381 Figure 11. Piston Ring Placement. TM 9-2815-205-24 0095 0095-15