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 and remove hose (13) from generator air intake tube (12) and elbow (15) (Model A VDS-1790-2D only). Remove clamps from hose. (2) The generator boot (7) exhaust tube (3) and associated parts were disassembled during disas- • sembly of the engine. b. Cleaning, spection, and Repafr. Refer to paragraphs 3-36, 3-37, 3-38. c. Assembly. (1) The generator boot (8, fig. 3-288) exhaust tube (3) and associated parts will be assembled during engine assembly. (2) Install two hose clamps (1 and 14) on hose l (13). Install hose on elbow (15) and on air intake tube (12) and tighten hose clamps (model A VDS- 1790-20 only). Section XXIV. REPAIR OF CRANKCASE BREATHER TUBES, FIRE EXTINGUISHER TUBE, INJECTION PUMP ELECTRICAL LEAD, MANIFOLD HEATER FUEL TUBES, AND OIL COOLER VENT LINE, FILTER AND ELECTRICAL COMPONENTS 3-141. General This section covers the repair of the crankcase breather tubes, fire extinguisher tube, injection pump electrical lead, manild heater fuel tubes, filter and electrical components, and oil cooler vent lines. Specific instructions on disassembly, clean- ing, inspection, and assembly accompany the re- pair operations. 3-142. Crankcase Breather Tubes, Fire Ex- tinguisher Tube, and Electrical Lead a. Disassembly. The crankcase breather tubes, fire extinguisher tube, electrical, and oil cooler vent lines were disassembled during engine disas- sembly. b. Cleaning, Inspection, and Repair. Refer to paragraphs 3-36 through 3-&. (1) Breather tubes and tee. Insפct breather tubes (4 and 14, fig. 3-289) and breather tube tee (16) for cracked, bent, or dented condition and for warping of tube mounting surface. Replace when cracked, 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. lnspect fire extin- guisher tube (22) for cracked, bent, or dented condi- tion. Check spray holes in tu be for obstructions and corrosion. [nspect tube fittings (23 and 8) for cracks and for stripped or damaged threads. R� place tube when cracked, badly bent, or when spray holes cannot be cleaned. Replace fittin when cracked or when thr<ds are damaged. 200 Ch.nge 1 (3) Pump electrical lead. Inspect pump electri- cal lead (8, fig. 3-286) for cracked, frayed, or de- teriorated insulation. Inspect lead for continuity with a low voltage circuit tester. Inspect electrical lead when insulation is cracked or broken, connec- tor threads are damaged, or when low voltage tes- ter indicates a failure. (4) Oil cooler vent lines. [ nsפct vent lines (2, 5, and 6, fig. 3-290) for frayed covering and damaged threads. Inspect fittings (1) and elbow for cracks and thread damage. Replace damaged parts. c. Assembly. The crankcase breather tubes, fire extinguisher tube, electrical lead, and oil cooler vent lines are assembled during engine assembly. 3-143. Manifold Heater Tubes, Filter, and Electrical Components a. Disassembly. The heater tubes and electrical components were disassembled during engine disassembly. (1) Remove tube tee (36, fig. 3-268) and elbow (36, fig. 3-267). Remove four assembled washer bolts (31) and four flat washers (32) attaching sol- enoid valve (37) to mounting bracket (33) and sol- enoid mounting bracket to filter mounting bracket. Remove solenoid mounting bracket. Remove two screws (15, fig. 3-282), Jockwashers (16) and flat washers (14) and remove solenoid valve (37, fig. 3-267) and fuel filter as a unit. Separate fuel filter and solenoid valve (13, fig. 3-282). Remove connect- ing nipple (38, fig. 3-267) and inlet tube connector (30). (2) Remove tube tee (24, fig. 3-268), elbow (7), check valve (25), nipple (19), elbows (20 and 16) and coupling (22) om solenoid valve (21). Remove two assembled washer bolts (29) and flat washer (28) ) )