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 Figure 2-29. Discon11ecting or connecting exhaust pipes aL tur- bine housing. (5) Install lower left rear shroud plate (6, fig. 2-24) and secure to lower transmission shroud, inner turbosupercharger shroud, turbosupercharger base and tie rod with seven assembled washer bolts (5) and to turbosupercharger outer shroud with one self-locking nut and bolt ( 4). (6) Install upper oil filler tube (3) through lower left rear shroud plate and inse1t lower end of tube in hose (fig. 2-23). Secure upper oil filler tube bracket to turbosupercharger outer shroud plate with one machine bolt and self-locking nut (2, fig. 2-24) and to turbosupercharger base and tie rod I wi t h two machine bolts and lockwashers (1). Tighten hose clamps (fig. 2-23) . • 2-20.1. Turbosupercharger (Model AVDS· 1790-2DR) a. Remal NOTE Similar procedures are required to re- move the left and right turbosupercharg- ers. For instructional purposes, removal of the left turbosupercharger is described. 2-42 Change� Removal procedures for the right tur- bosupercharger are the same, except for the oil filler tube installation. (1) Loosen hose clamp (1, fig. 2-29.1) on oil filler tube hose. Remove capscrew and self-lockii�g nut (2) securing upper oil filler tube to upper support. N Remove capscrew and self-locking nut (3) securing tube to lower support, and remove the upper oil filler tube (4). Install protective cover on lower oil filler tube opening. (2) Disconnect turbosupercharger oil inlet hose (4, fig. 2-25). Remove oil inlet elbow (5) and oil inlet nipple (6) and retain for installation in re- placement turbosupercharger. (3)Loosen self-locking nuts on hose clamps(fig. 2-27). Remove six self-locking nuts and remove ail' outlet elbow. Remove and discard air outlet elbow gasket. Remove two self-locking nuts and flat washers at turbosupercharger mounting base studs (fig. 2-27). ( 4) Loosen upper adjustable hose clamps (fig. 2-28). (5) Remove eight self.Jocking nuts, flat washers and ca· pscrews (fig. 2-29.2). Remove upper oil filler tube support and separate exhaust pipes from turbosupercharger. Remove and discard two gaskets. Remove turbosupercharger. b. lnstallatio11. (I) Install turbosupercharger on mounting base studs (fig. 2-28) and insert turbosupercharger oil drain tube into oil drain tube hose. Install new gaskets (fig. 2-29). Position upper oil Ciller tube support as shown in figure 2-29.2 and secure support and exhaust pipes to turbine housing with eight self-locking nuts, flat washers and capscrews. Tighten upper oil drain hose clamp (fig. 2-28). (2) Secure turbosupercharger to mounting base with two self-Jocking nuts and flat washers (fig. 2-27). Install air outlet elbow using new gasket and secure with six self-locking nuts. Reposition and tighten hose clamps. (3) Install oil inlet nipple (6, lig. 2-25) ꝏd oil inlet elbow (5) in turbosupercharger and connect oil falet hose. (4) Remove protective· cover and install upper oil filler tube in oil filler tube hose (fig. 2-29. l ). Secure the upper oj) filler tube to the upper support with one capscrew and self-locking nut (2). Secure the tube to the lower support with one capscrew and self-locking nut (3). Tighten hose clamp (I).