NMWR-9-2815-220 Overhaul Manual for M60 M88 Engine AVDS-1790-2CA, AVDS-1790-2DA, AVDS-1790-2DR Download
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NMWR 9-2815-220 FRONT FAN DRIVE ASSEMBLY OVERHAUL—Continued 0017 00 INSPECTION 1. Inspect components not covered by an OIP in accordance with WP 0005 00. 2. Refer to WP 0005 00 and the OIPs in Table 1 for specific inspection criteria for selected items. 3. Discard all mandatory replacement parts refer to Figure 2. Table 1. Components Requiring Overhaul Inspection. COMPONENT OIP Forward mechanical housing (item 1, Figure 2) 10935541/1 (Table 3) Forward mechanical housing (item 8, Figure 2) 8761155-1 (Table 4) Fan drive driven bevel gearshaft bearing sleeve spacer 8682674 (Table 5) (item 13, Figure 2) Fan driven bevel gearshaft (item 16, Figure 2) 8682684 (Table 6) Fan drive bevel gearshaft (item 17, Figure 2) 8682553 (Table 7) REPAIR 1. Refer to WP 0005 00 for general repair instructions. 2. If either the fan driven gearshaft or fan driven bevel gearshaft require replacement, both must be replaced as they are a matched gear set and cannot be replaced individually. 3. Refer to WP 0005 00, Table 2, and Figure 1 when replacing damaged, bent, or stripped front fan drive assembly studs. Refer to WP 0005 00 when replacing damaged screw thread inserts. Table 2. Front Drive Assembly Standard Stud Identification. References Figure Item Setting Number Stud size and length Number Number Height Required 1 1 2-1/16 2 3/8-16 (51/64) x 3/8-24 (7/8) x 2-25/32 2 3-1/16 6 3/8-16 (51/64) x 3/8-24 (11/16) x 3-7/8 3 3/4 4 3/8-16 (13/16) x 3/8-24 (3/4) x 1-7/8 4 23/32 8 5/16-18 (3/4) x 5/16-24 (19/32) x 1-7/16 5 29/32 4 5/16-18 (3/4) x 5/16-24 (19/32) x 1-3/4 *6 7/8 3 5/16-18 (3/4) x 5/16-24 (19/32) x 1-1/2 7 1 2 5/16-18 (3/4) x 5/16-24 (19/32) x 1-1/2 8 3-1/2 2 3/8-16 (27/32) x 3/8-24 (11/16) x 4-5/16 *On Model AVDS-1790-2DR, setting height is 1-41/64 and stud size is 5/16-18 (3/4) x 5/16-24 (3/4) x 2-5/16. 0017 00-2