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

a. I. Deleted. b. Connect manifold heater fu el retu hose (5, fig. 3-24) to tltbe cross elbow. Connect fuel injector nozzle fuel retu lubes (4) and fuel iJ1jector fuel return hose (3) to tube cross. Install turbosupercharger oil hose bulkhead adapter elbow (2) through left rear center slu·oucl and secure wHh washer and nut. Con110ct turbosuperchargcr oil hose ( J ) to bulkhead adapter elbow. b.J. On Model AVDS-1790-2C and AVDS-1790-20 engines, install backflow valve mounting bracket (26, fig. 3-278) on damper and filter housing and secure with two nat washen (27) and self-locking nuts (28). On Model AVDS-l 790-2DR ennes, install backnow valve mountiJ1g bracket (36) and secure with two nat washers (37) and self-JockiJ1g nuts (38). NOTE ff it is necessary to index new solenoid valves, loosen the aco nut, index the valve, and torque tighten aco nut to 50 pound-inches. c. InstalJ mounting bracket, solenoid valve, and manifold heater fuel ftlter (12, fig. 3-23) as an assembly on crankshaft damper and filter housing a and secure with two self-Jocking nuts (11 ). Install fuel inlet tube (10). install backflow valve (5) on ) mounting bracket aJ1d secure with two capscrews, lockwashers, allCI flat washers (9). Connect ani- 1 fold heater fuel filter fuel inlet hose (7) at the filter (8). Co1mect backllow valve fuel inlet hose (6) at backflow valve (5) and at primary fuel filter. Jnstall loop clamp (4) and secure to fuel pump adapter stud . with self-Jocking nut (4). Com�ect right mamfolcl fuel tube (3) a11cl left manifold fuel tube (1) to sole11oid outlet tee (2). c. I Connect oil iJ1Jet hose (13, fig. 3-23. l ) to 45 degree elbow in power take-off drive housing and to 90 degree elbow on right side of crankcase. InstaU manifold heater filter, solenoid valve and moun t1g bracket (12) as an assembly an<l secure I with two self-locking nuts (11). Install fuel back- . flow valve (10) and secure with two capscrews lock washers and a t washers (9). Connect fuei I pump inlet hose (8) at the back.flow valve. Install TM 9-2815-220-34 two cushioned clamps and secure wHh one self-locking nut (7). Install manifold heater fuel inJet tube (6). Connect backflow valve fuel inlet hose (5) al backflow valve and priJnary filter outlet. Connect left manifold heater fuel tube (1) to solenoid outlet tee (2). Co1ect right manifold Jieater fuel tube (3) to solenoid outlet tee (2). InstaJJ cushioned clamp (4) on right manifold heater fuel tube and secure with self-locking nut. cl. Install two grommets (4, fig. 3-22) in each oil cooler frame support (5) and install three supports on cylinder assemblies using six spacers and self- locking nuts. Install four cushioned hose clamps(3) on cylinder head oil drain tubes as shown i n figure 3-22. Install four manifold heater fuel tube clamps (2) and secure to cushioned clamps with four capscrews and self-locking nuts (1). Install right manifold fuel tube clamps and oil cooler frame supports in the same man ner. 3-185.1. Smoke Generating Solenolds and Fuel Tubes a. On Models A VDS-1790-2C and AVDS-1790-20, install solenoids and bracket (11, fig. 3-24.1) as an assembly. Secure to rear lifting eye with two capscrews (10) and lockwire. Con- nect tube nut of solenoid outlet tube (7) to outlet elbow of solenoids. Install elbow (8) and tee (9) on outlet tube (7). Install two new fuel tubes and connect tube nuts (4) to tee (9), install adapters (6) foto exhaust mru1ifolds and tighten tube nuts (5). JnstaU two retaining straps and clamp pads (2) and secure with two capscrews and self-locking nuts ( l ). Attach tube nut of solenoid inlet fuel tube (3) to inlet elbow of solenoid and secure loop clamp to cam geaJ" cover with nut (not shown). b. On Model AVDS-1790-2DR, iJ1stall the smoke generatiJ1g solenoids, fuel tubes aJ1d asso- ciated hardware fo a similar manner, except the two fuel tubes from the tee to the exhaust manifolds are secured to the rear sluouds with two loop clamps and assembled washer bolts. Change 3 3-241