TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Figure 7-5. Checking accessory drive gear and starter idler gear backlash. b. Crankshaft Oil Seal Housing and Support. Refer to figure 5-168 and install new candlewick packing in four openings, at the crankcase and oil seal housing support parting line as shown in figure 7-6. Refer to figures 5-167 through 5-165 and install oil seal cap and housing attaching parts and retainers. c. Torque Tighten Crankcase Tie Rod Nuts. Refer to figures 5-172 and 5-171 and, with the aid of an assistant holding the slotted nuts on opposite side of crankcase, tighten crankcase tie rod nuts to 640 pound-inches. Install 14 cotter pins to secure nuts. Care should be taken so that the tie rod extends equally on both sides of crankcase. d. Crankshaft Oil Seal. The crankshaft oil seal is installed during overhaul of the crankshaft (fig. 6-32). Refer to figure 7-7 for correct position of oil seal split line. Figure 7-7. Correct position of crankshaft oil seal split line before installing seal retainer. e. Transmission Adapter. Refer to figures 5- 164 and 5-163. f. Flywheel. Note. The dowel pins (fig. 7-8) are so located that the flywheel can be installed on the flange on the crankshaft in only one position. g. Transmission Drive Gearshaft Assembly. (1) Position transmission drive gearshaft assembly on dowel pins (fig. 7-8) which protrude through flywheel. (2) Refer to figure 5-159 and alternately tighten bolts to 1000 pound-inches. (3) Check flywheel runout as shown in figure 7-9 using dial indicator. Runout should not exceed 0.015-inch. Replace flywheel if runout exceeds this limit. Figure 7-6. Installing candlewick packing between crankcase and oil seal housing support. 7-5