TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download

3-188.2. Smoke Generating System a. lnsl all smoke generating fuel tube and secure to left upper covers with three assembled washer bolts and loop cl•11nps (fig. 3-5.3). On Model AVDS-J 790-2DR. nstall four assembled washer bolts and loop clamps. Secure bulkhead elbow to shroud with flat washer, lockwasher and retaining nut (fig. 3-5.4) and connect solenoid valve inlet tube nut to outlet of bulkhead elbows. b. l.nstall fuel shut-off valve to mounting bracket and secure with two capscrews and self-Jocking nuts (4, fig. 3-5.2). Attach valve and bracket assembly to front o f shroud plate with two assembled washer bolts (3 ). c. Connect fuel outlet tube n ut (2) to fuel shut-off valve. Attach fuel hose (I) to shut-off valve and to f ue l /wat er separator tee (fig. 3-5.1 ). 3-189. Engine Accessories and Wiring Har- ness a. Install multiple leg sling part number 12257229 (fig. 3- I) on suitable c ha in hoist. Install hooks of sling in engine lifting eyes and take up slnck. Remove four bolts and nat washers securing engine to overhaul stand brackets. Lift engi ne and remove overhaul stand. Lower engine on suitable blocks or movable dolly maintaining lifting sling hook-up as a precaution against engine tipping during remain ing assembly operations. a.I. LifL Mo de l AVDS-1790-2DR using engine lift- ing sling, part number 11671664, in a manner simi- lar to a above. Howevel', the front of the engine is lifted at the crankshaft damper and filter housing lifting eyes. . b. Insta ll fuel pump as ouLlined i n paragraph 2-17b O 2-17.lb. c. Install sta1ter and cradle as outlined in para- graph 2-18b. NOTE Model AVDS-1790-2DR starter installa- tion instructions are similar lo those in paragraph 2-18b except that this engine is not equipped wilh a wil'ing haess. d. Inst al l generator oil drain ni p pl e (fig. 3-4). Install check valve with directional arrow pointing toward cylinder head oil drain lube. lJ1Stall elb ow and drain hose i right rear cylinder bead oil drain tube (Model A VDS-l 790-2C only). Install generat- or and cradle as out lin ed i11 paragraph 2-l 9a(2) or 2-19b(2). TM 9-2815-220-34 CAUTION It is of utmost i mportance that the generator support, cradle, and U-bolt be installed in such a manner that will not disturb generator mounting alinement and still fuish adequate support to minimize vibration. Misal inement of 0.010 in. i n any direction is sufficient to cause a leak (Pressure loss) between the generator mounting flange and the generator mounting adapter. NOTE Model A VDS-1790-2DR generator instal- lation instructions are similar to those de- scribed above except that this engine is not equipped with an engine wiring har- ness. e. I n sta ll turbosuperchargers, lower shroud plates, upper oil filler tube and crankcase rear breather tube as outlined in paragraph 2-2. f Install wiring harness as outlined in para- graph 2-11�1 (2). NOTE Model AVDS-1790-2DR is not equippe with an engine wiring harness. Pressure test induction system by sealfog the turbosupcrcharger air inlet and out- let with suitable covers and pressul'izing the system to 15 psi. The right bank induc- tion system may be pressurized through the generator vent hose (10, fig. 2-15). The left bank may be pressurized by removing a pipe plug (10, fig. 3-270) from the intake manifold elbow and pressurizing through the opening. Pressurize to 15 psi, shut off air and note results. A gradual loss of pressure is permissable, but a sudden loss of pressure indicates a missing or loose pipe plug, missing gasket or loose connec- tion. Repair leaks and retest. 3-189.1. Clean Air Package For assembly procedures for the clean air package on the Model AVDS-l 790-2CA and Model AVDS - J 790-2DA, refer to Chapter 4. NOTE After lhc engine has been completely as- sembled it should be tested :incl the n ecessary adjustments made as dire ct e d in section XXIX. Change 3 3-245