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) Reduce the voltage to 15 vdc. Connect an additional posiUve (+) lead from the power supply to pin C of the module. Gradually increase the voltage whiJe continuing lo check the continuity between pins D aJ1d D. Continuity between pins B and D should be 1lerrupled al 17 (± 1.0) vdc and remain open to 24 volts. (5) Reduce the voltage to JS vdc and the continuity between pins 13 and D should remain open. Tu the power supply off r one second or longer. When the power supply is tued on, continuity should again be achieved between pins Band 0. (6) ModuJes that do not function as in (2) through (5) above must be replaced. Section XXV.1. REPAIR OF SMOKE GENERATING SYSTEM COMPONENTS 3·148.2. General This section covers the repair of the smoke generating system components. Specific instruc- tions on disassembly, cleaning, inspection, and assembly accompany the repair instructions. 3-148.3. Fuel Shut·off Valve a. Cleaning, Inspection, and Repair. Refer to paragraphs 3-36 through 3-38. O b. Inspection Remove elbow. Inspect valve (6, fig. 3-292.1) for free valve action. Valve must tum freely. Valve must not Jeak when in t he closed position. 3-148.4. Solenoid Valves I a. Disassembly Remove four assembled washer bolts (22, fig. 3-292.1) and nat washers (23) and separate solenoid valves (19) from solenoid bracket (25). Remove pipe nipple (20) from solenoid valves. 3·202.2 Change 3 b. Cleaning, inspection, and Repair. Refer to paragraphs 3-36 through 3-38. Connect valve(s) to 24-voll power supply source and check for an audible click when valve opens and closes. Valve must not leak when in the closed position. c. Assembly. Install pipe nipple (20, fig. I 3-292.1) in inlet port of one solenoid valve and in the outlet port of the other solenoid valve. The bottom surfaces of solenoid valves must be parallel (check on a flat surface). Install solenoid valves (19) on bracket (25 ), and secure with four flat I washers (23) and assembled washer bolts (2 2). Install fuel inlet and outlet elbows (18). 3-148.5. Metal Tube Assemblies, Hose Assemblies and Associated Fittings a. Cleaning and !11spectio11. Refer to paragraphs 3-36 and 3-37. ' b. Repair. Refer to paragraph 3-38. ) )