NMWR-9-2815-220 Overhaul Manual for M60 M88 Engine AVDS-1790-2CA, AVDS-1790-2DA, AVDS-1790-2DR Download
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NMWR 9-2815-220 PISTON AND CONNECTING ROD ASSEMBLY OVERHAUL—Continued 0011 00 INSPECTION 1. Inspect components not covered by an OIP in accordance with WP 0005 00. 2. Piston inspection. (a) Inspect piston for cracks, flaws, or distortion using dye penetrant method. Pay particular attention to the area along the top ring groove insert. Also inspect piston for damage or broken ring lands, nicks, burrs, or scratches. (b) Check top ring groove of the piston using tapered piston ring gage as shown in Figure 1. The shoulder of the gage must not touch the shoulder of the ring land. (c) Inspect the piston pin for cracks using magnetic particle method. Also visually inspect for nicks and measure for wear. Figure 1. Checking Piston Top Ring Groove Using Tapered Groove Piston Ring Gage. 0011 00-3 Change 1