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TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download

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6-65. Overhaul of Manifold Heater Tubes, Filter, and Electrical Components a. Disassembly. Disassemble the manifold heater filter following instructions which ac- company figure 6-251. The heater tubes and electrical components were disassembled during engine disassembly. b. Cleaning, Inspection, and Repair. Refer to paragraphs 6-2 through 6-4. (1) Heater tubes. Flush rigid heater tubes (19, fig. B-21) thoroughly and dry with com- pressed air. Clean plastic tubes (50) with a clean dry cloth and blow tubes out with com- pressed air. Inspect tube fittings for stripped or damaged threads. Replace tubes that are split or kinked or when fittings are damaged. (2) Heater fuel filter. Replace filter element if deformed or if foreign material is embedded. (3) Electrical components. Inspect heater electrical leads (9, fig. B-21) and ignition units (8) for cracks, continuity, and other damage. Replace leads and ignition units that fail to pass continuity test. c. Assembly. Refer to figure 6-251. The manifold heater tubes and electrical components are assembled during engine assembly, Chapter 7. Disassemble 1. Unscrew and separate filter head (A) and filter bowl. 2. Remove and discard filter element (B). 3. Remove and discard preformed packing (C). Assemble 1. Position a new preformed packing (C) on filter bowl. 2. Position new filter element (B) in bowl 3. Install head (A) on bowl. Figure 6-251. Disassembling or assembling manifold heater fuel filter. Section XVIl. OVERHAUL OF FUEL INJECTION PUMP DRIVE COUPLERS, FUEL INJECTOR NOZZLES, PISTON OILER NOZZLES, AND TIME TOTALIZING METER 6-66. General cleaning, inspection, repair, and assembly ac- This section covers the overhaul of the fuel company the overhaul instructions. Refer to the injection pump drive couplers, fuel injector following table (table 6-46) for applicable nozzles, piston oiler nozzles, and time totalizing illustrations and instructions for overhaul meter. Specific instructions on disassembly, operations. 6-214