TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Para 6-65b Para 6-65b Section XVI. OVERHAUL OF CRANKCASE BREATHER TUBES, FIRE EXTINGUISHER TUBE, INJECTION PUMP ELECTRICAL LEAD, AND MANIFOLD HEATER FUEL TUBES, FILTER AND ELECTRICAL COMPONENTS 6-63. General Specific instructions on disassembly, cleaning, This section covers the overhaul of the crank- inspection, repair, and assembly accompany the case breather tubes, fire extinguisher tube, in- overhaul operations. Refer to the following table jection pump electrical lead, and manfiold heater (table 6-45) for applicable illustrations and fuel tubes, filter, and electrical components. instructions for overhaul operations. Table 6-45. Crankcase Breather Tubes, Fire Extinguisher - Tube, Injection Pump Electrical Lead, and Manifold Heater Fuel Tubes, Filter, and Electrical Components Component Disassembly Cleaning Inspection Repair Crankcase Breather Tubes, Fire Ex- tinguisher Tube, and Pump Eletri- cal Lead Manifold Heater Fuel Tubes, Fil- ter, and Electri- cal Components Para 6-64a Para 6-65a Fig. 6-251 Para 6-2 Para 6-64b 6-64. Overhaul of Crankcase Breather Tubes, Fire Extinguisher Tube, and EIectrical Lead a. Disassembly. The crankcase breather tubes, fire extinguisher tube, and electrical lead were disassembled during engine disassembly, Chapter 5. b. Cleaning, Inspection, and Repair. Refer to paragraphs 6-2 through 6-4. (1) Breather tubes and tee. Inspect breather tubes (10, 11, 30, 36, and 43, fig. B-11) and breather tube tee (16) for cracked, bent, or dented condition and for warping of tube mounting surface. Replace when cracked or badly dented or bent, or when mounting surfaces are badly warped. Straighten bent tubes to as near original shape as possible. Remove minor warpage of mounting surfaces by rubbing across abrasive cloth held tightly on a surface plate or similar flat surface. (2) Fire extinguisher tube. Inspect fire extinguisher tube (24, fig. B-11) for cracked, Para 6-64b Para 6-65b Assembly Para 6-64c Para 6-65c Fig. 6-251 bent, or dented condition. Check spray holes in tube for obstructions and corrosion. Inspect tube fittings (25 and 26) for cracks and for stripped or damaged threads. Pressure check tube to withstand a maximum working pressure of 25 psi. Replace tube when cracked, badly bent, or when spray holes cannot be cleaned. Replace fittings when cracked or when threads are damaged. (3) Pump electrical lead. Inspect pump electrical lead (51, fig. B-11) for cracked, frayed, or deteriorated insulation. Inspect lead for continuity with a low voltage circuit tester. Inspect electrical connectors for stripped or damaged threads. Replace electrical lead when insulation is cracked or broken, connector threads are damaged, or when low voltage tester indicates a failure, c. Assembly. The crankcase breather tubes, fire extinguisher tube, and electrical lead are assembled during engine assembly, Chapter 7. 6-213