TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Component Fuel Injection Pump Drive Splined Coupler Diaphragm Coupler Fuel Injector Nozzles Piston Oiler Nozzle Time Total- izing Meter Table 6-46. Fuel Injection Pump Drive Couplers, Fuel Injector Nozzles, Piston Oiler Nozzles and Time Totalizing Meter Disassembly Para 6-67a Fig. 6-252 Para 6-67a Fig. 6-253 Para 4-23 Fig. 4-169 Para 6-69a Fig. 6-254 Cleaning Para 6-2 Para 6-2 Para 4-23 Para 6-69b Para 6-67b Para 6-67b Para 4-23 Para 6-69b Para 6-70a Figs. 6-255, 6-256 Repair Para 6-67b Para 6-67b Para 4-23 Para 6-69b Assembly Para 6-67c Fig. 6-252 Para 6-67c Fig. 6-253 Para 4-26, 4-27, Figs. 4-169, 4-168 4-167 Para 6-69c Fig. 6-254 6-67. Overhaul of Fuel Injection Drive Couplers a. Disassembly. Disassemble the drive splined coupler following instructions which accompany figure 6-252. Disassemble drive diaphragm coupler following instructions which accompany figure 6-253. Disassemble 1. Refer to figure 4-59 and 4-61 to remove front coupler Figure 6-252. Disassembling or assembling fuel injection pump drive splined coupler. sleeve and hub from injection pump. 2. Separate front coupler sleeve (A) and injection pump hub (B). 3. Remove quad ring (C) from coupler sleeve. 4. Remove Woodruff key (D) from pump shaft. Note. Keep front coupler sleeve and hub together. Place them with the rear coupler sleeve and drive shaft hub on rear fan drive housing. Check identification marks made during engine disassembly (fig. 4-52) to make sure these parts match. These parts are mated and must be kept together. Assemble 1. Position Woodruff key (D) in pump shaft. 2. position quad ring (C) in internal groove of front coupler sleeve (A). 3. Install injection pump hub (b) in coupler sleeve. 4. Refer to figure 4-63 to install hub and sleeve on pump shaft and install preformed packing. 6-215