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 Table 3-6. Gc11erato1· Adapter Stud lde1tli/icatio11, Models AVDS-1790-2D and i\VDS-1790-2DR Fig. Ref. Selling No. No. Height 3-167 37 7/8 (3) Assembly. i) Coat ball bearings with engine oil and p1·ess front ball bearing (fig. 3-165) and rear ball bearing on gearshaft. (b) Press oil seal (fig. 3-164) into adapter until seal is ti�ht "''nst seal flange in adapter. NOTE The side of the seal with the trade mark and part number must be toward the stud side of the adapter. The lip of the seal must be dit·ected toward the side opposite the studs. 3-52. Generator and Starter Idler Gears a. Discissembly. Remove retaining ring (fig. 3-166), securing ball bearing in generator idler gear and press ball bearing from gear. Disassemble the starter idler gear in a similar manner. b. Cleaning, Inspection, cmd Repa. Refer to paragraphs 3-36 through 3-38. No. Rcq'd 6 Stud Size and Length 318-L6 (136'1) x 318-24 (518) x 13/32 TA021623 (1) Inspect starter idler gear and bearing against limits specified in repai1· standards (table 3.rn. Replace parts not meeting these require- ments. FigareJ-./6'6. Removing ge11emlo>" idlerge· rela111ing1·i11g and ball lieari 11y. (2) Inspect generator idler gear and bearing against limits specified in repair standards (table 3-7). Replace parts not meeting these require- ments. Table 8·7. Ge11e1·ator cd Sturt1>1· Jd/rl' Gears Repafr Sta11<lards Fig. Ref. Point. of Size and fits Wear Component No. letter measurement of new parts limits Generator idle1· gear 3-167 r Inside diameter of bearing b<Jre in 2.8334 2.83•16 2.83<18 with bearings generator idler gear 3-167 t' Outside diameter of bearing 2.83<11 2.8346 . Starter driven idler 3-167 l-r Fil of bea1ing in gea1· 0.0005L 0.0012T 0.0007L gear wilh bea1ings 3-L67 q Outside diameter of idler gearshaft 1.18 1.1808 1.1802 3-L67 s Inside diamcler of bea1ing 1.1807 l.L811 • 3-167 S· Q Fit of bearing on idler gearshaft O.OOOlT 0.0007L 0.0009L 3-167 w I nsidc diameler of bQaring bore 3.119 3.&133 3.5"40 in idle1· gear 3-167 u Outside diameter of bQaring 3.627 3.33 . 3-167 U·W Fit of bea1ing in gear 0.00061 0.0014T 0.0013L 3-167 a Outside diameter of idler geai·shaft 1.1804 1.1808 1.1802 3-167 v Inside diameter of healing 1.1807 1.1811 • 3-167 v-a Fil of betuing on idler gcarshaft 0.0001'1' 0.0007L 0.0009L Refer to paragraph 3-37c for explanation of symbols. c. Assembly. Coat ball bearing (fig. 3-168) with engine oil and position bearing in bearing bore of generator idler gear. Carefully press bearing into gear until bearing seats against flange in gear. Secure bearing in gear with retaining ring (fig. 3-166). Install the starter idler gear bearing in a similar manner. 3·80 Change 1 ) )