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 DUST EJECTOR SYSTEM (MODELS AVDS-1790-2CA AND AVDS-1790-2DA) 0036 00 OVERHAUL—Continued Table 2. Overhaul Inspection Procedure for Right and Left Exhaust Pipe (OIP 699772) Left (Item 4, Figure 1) and (OIP 12314567) Right (Item 26, Figure 1). QA NO. REF. CHARACTERISTIC INSP. REQUISITE REQ. LTR. METHOD 1 Cracks in tubes, Visual None allowed flanges, or welds 2 Scratches, nicks, gouges, Visual None allowed or raised metal on contact surfaces 3 Pressure test for leaks Underwater leak test No leaks permissible using 10 psi internal air pressure. Plug all openings 4 A Squareness of flange Measure Surface must be square to -D- contact surface to O.D. of within 0.0150 in. (0.3810 mm) tube 5 Broken or missing support Visual None allowed bracket (12314567 only) 6 B Concentricity of nozzle to Measure Nozzle must be concentric to -E- I.D. of tube within 0.0600 in. (1.524 mm) dia. 7 C Location of tube end to (2) Measure Must be on location specified 0.41 dia holes and within ± 0.0300 in. (0.7620 mm) centerline of ejector either direction 8 Holes due to erosion Visual None allowed 9 2.7800 – 2.8900 in. Measure Must not exceed 0.0100 in. (70.6120 – 73.4060 mm) (0.2540 mm) over high limit and 3.3700 – 3.3900 in. (85.5980 – 86.1060 mm) ejector nozzle diameters 10 Location of nozzle exit Measure Must not exceed 0.0300 in. from flange: (0.7620 mm) under low limit 6.530 – 6.590 in. (165.862 – 167.386 mm) (12275897) 5.2200 – 5.2800 in. (132.588 – 134.112 mm) (12314567) 0036 00-5