TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Disassemble 1. Refer to figure 4-60 and 4-62 to remove diaphragm coupler (A) from injection pump. 2. Remove Woodruff key (B) from pump shaft. Assemble 1. Position Woodruff key (B) in pump shaft. 2. Refer to figure 4-64 to install diaphragm coupler (A) on fuel injection pump. Figure 6-253. Disassembling or assembling fuel injection pump drive diaphragm coupler. b. Cleaning, Inspection, and Repair. Refer to paragraphs 6-2 through 6-4, and (1) and (2), below. (1) Drive splined coupler. Refer to paragraph 6-42c (7). (2) Drive diaphragm coupler. When cleaning, Diaphragm must not be immersed in fluids or cleaners. Inspect diaphragm (10, fig. B- 16) for cracks, scratches, or mars on rims or diaphragms. Inspect diaphragm pack and flange coupler (12) keyways for wear or mutilation. If diaphragm pack is cracked, do not attempt to repair by welding. Replace unserviceable parts by salvage or replace coupler assembly. c. Assembly. Refer to figures 6-253 and 6-252. 6-68. Rebuild of Fuel Injector Nozzle and Holder Assembly Refer to paragraphs 4-22 through 4-24 and figures 4-163 through 4-165 for rebuild of the fuel injector nozzle and holder assembly. 6-69. Overhaul of Piston Oiler Nozzle Assembly a. Disassembly. Do not remove nozzles (fig. 6-254) unless the nozzle or holder cannot be cleaned without disassembly. To remove nozzles, position holder in a soft-jawed vise and remove nozzles. b. Cleaning, Inspection, and Repair. Refer to paragraphs 6-2 through 6-4. Make sure oil passages in holder and oil holes in nozzles are clean and free of obstruction. Replace nozzles and holders as necessary, when oil passages and holes cannot be cleaned of obstructions. c. Assembly. Refer to figure 6-254 to install the nozzle in the holder if removed. Stake nozzles on three flats, 120 degrees apart. Figure 6-254. Piston oiler nozzle and holder assembly. 6-216