TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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TM 9-2815-220-34 4-3. Dust Ejector System. a. The dust ejector system (fig. 4-4) provides dust ejection capabilities when dust is being ingest- ed into the vehicle air cleaner system. b. The system is composed of scavenge inlet tubes (fig. 4-4 ), exJrnust pipe cap assemblies, and exhaust pipes with integral dust ejector nozzles. These components are mounted above and parallel to the oil coolers on each side of the engine. This system also .includes special engine and trans- EXHAUST PIPE CAP ASSEMBLY mission breather tubes, and a new oil filler tube. c. The dust ejector system uses engine exhaust gas velocity to produce a scavenging action through the system. Engine exhaust flowing through the ejector nozzles produces a pressure differential which creates the now for the scavenging action in the vehicle pre-cleaner. The dust-laden scavenge air flows through the ejector nozzles, mixes with the exhaust gases, and exits through the exhaust pipes. The exJrnust pipe cap assemblies prevent the back-flow of exhaust gases and/or water entry during fording operations. OIL FILLER TUBE EXHAUST PIPE WITH INTEGRAL (INTERNAL) DUST EJECTOR NOZZLE TA265584 Figure 4·4. Dust Ejector System 4-4 Change 3 ) )·