TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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(c) Install cable terminal (11, fig. 2-147) cir- cuit No. 478 on generator terminal "D'' and secure with self-locking nut and flat washer (10). Install cable terminal (9) circuit No. 1, on generator ter- minal "A" and secure with self-locking nut and flat washer (8). Install electrical cable from blower motor (7), electrical cable (6) circuit No. 530, and generator cable (5) on generator terminal "B". Se- cure with self-locking nut and 11at washer (4). In- stall transmission disconnect cable connector (2) in mounting bracket(3) and secure with four machine screws, lockwashers and hexagon nuts (1). · {d) Install loop clamp, bracket, oil tempera- ture and oil pressure cable connectors and wiring haess as outlined in paragraph 2-49a2(./). {e) Install generator air intake tube (fig. 2-146) on generator blower motor housing and se- cure to support bracket with two capscrews, lockwashers and flat washers. (f) Install brackets, wiring haess, clamps and starter electrical cable as outlined in para- graph 2-49a.2(h) through (n). · c. Model AVDS-1790-2DR. Model AVDS-1790- 2DR is not equipped with an engine wiring har- ness. 2-49.1. Turbocharger Drive Housing (Power Take-off) a. Remov<il. (1) Disconnect fuel outlet hose (1, fig. 2-148.1) and fuel inlet hose (2) from respective elbows. Col- lect fuel in a suitable container and discard. (2) Remove four self-locking nuts and flat washers(3) and remove fuel pump(4) from adapter. Remove and discard fuel pump mounting gasket (5). Disconnect oil inlet hose (6) at 45° elbow (7). (3) Install holding bar and puller assembly (2, fig. 2-6) on power take-off drive coupling (1, fig. 2-148.2) and secure �th two 7/16-20UNF x 1-1/2 inch capscrews (2). Hold holding bar and puller assembly to prevent crankshaft from turning, and remove self-locking nut (3) and flat washer (4). Re- move holding bar and puller assembly. (4) Install holding bar and puller assembly (2, fig. 2-6) on power take-off drive coupling (1, fig. 2-148.3), with boss against gearshaft. and secure with two 7/16-20UNFx11/2-inch capscrews (2). Al- ternately tighten the two capscrews and remove the power take-off drive coupling. Remove holding bar and puller assembly. (5) Remove eight self-locking nuts and flat washers (3, fig. 2-148.3) and remove the power takeoff drive housing (5) and fuel hose clamps (4). Use two mechanical pullers (4, fig. 2-5) if necessary · 1 Fuel outlet hose 2 Fuel inlet hose • l _ _ _ _ 3 Self-locking nut and flat washer 4 Fuel pump TM 9-2815-220-" 5 Gasket 6 Oil inlet hose 7 45° elbow 8 Hose clamp Figure -14.J. Re11w1i11g "r i11stalliug fuel pump, model A\I DS-1790-DR engine. to assist in housing removal. Remove and discard mounting gasket (6). (6) Remove 45° elbow (7, fig. 2-148.3) from hous- ing. b. Installation. (1) Install 45° elbow (removed above) in new power takeoff drive housing. (2) Install power takeoff drive housing on studs using new mounting gasket (fig. 2-148.4). - (3) On engines using the ]ate spur gearshaft (with 7/8-14 inch threads), use alinement tool, Part No. 12275768. On engines using U1e early spur gearshaft ( wi t h 3/4-16 inch threads), use alinement tool, Part No. 11684212. Remove puller screw from alinement tool. Insert a linemen t tool in power takeoff drive housing until firmly seated on the power takeoff spur gearshaft taper. With the alinemenl tool firmly seated on the spur gearshafl, install seven self-locking nuts and flat washers. Do not install self-locking 11ut and flat washer on stud located at the 9 o'clock position. Install puller screw and tu clockwise to remove alinemenl tool. NOTE Drive coupling taper and spur gearshaft taper areas must be wi ped d with dry-cleaning solvent -D-680) t o assure maximum friction. I Change 3 2-91