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 A!IGU I f PMTH DR HO\A 1 Lll viscous oAMPlR ·T21135 TH IS HO T A fLHECL OQ HOf US( �A�ERS · DRIFTS OR PRY8ARS TO INSTALt. OR REVE R CRAHHAf T TA"q1 Fig11r� 3 ·18. Torsional vibratio11 damper n1i11g data. I place flywheel adapters not meeting these stand- ards. its specified in repair standards (table 3-9). Replace gearshaft if it does not meet these requirements. 6 (3) 1'rcmsmissio11 drive gearshaJL Inspect spur gear (10, fig. 3-174) for oversize 01· out-of-round dowel pin holes. Mark dowel pin holes for repair. 1nspect transmission drive gearshafL against Jim- (4) Acce++01·u drive sv11r geco·. Inspect acces- sory drive spµr gear (8, fig. 3-174) against limits specified in repair standards (table 3-9). Replace accessory drive gear if it does not meet these re- quirements. Table 3-9. Torsionnl \fibmtio11 Dn111per, n!lll'ltee/, Accessurv D•·ive Gear. 11111/ 7'1·un$11ti.��iv11 D1fr" Gr1m1haj) Rtµufr Stn11<fards ig. Ref. Point of Sizes and fits Wear mnent No. leller meas urement of new parts limits Torsional vibration 3·174 a 1 n,id� d111c1cr of �runk>h�ri plil•l bor� in .tumpcr 4.15 IS ·US25 4.2535 damper )·174 b 011hi1k li 1:unc1cr of d:omper hub on rk,hafl 4.149(1 4.2510 4.2475 3 · 174 3.IJ Fit ol damper on rrJnkshaft 0.000.SL 0.003.SL 0.0060L Flywheel 3.174 k Ouh1 d dia11w1cr of llyw:el hub on cr4nkihafl 7.9980 7.9990 7.9970 3 . 174 1 11 losllk Jianitcr of rank�h3ft pilot bor in 11ywhccl 8.0000 .0010 8.0020 3· 174 k·nt Fil of llywlwd on crankshaf1 O.OOICIL 0.00JOL 0.00OL J. J 74 l'lywh�cl run,1111 0.0000 0.0150 0.01O )·174 r ln<ide J1amc1r of dowel pin holes nywd, or flywheel JJaptcr 3·174 r ln,iJc Jia ll l�l cr ofdoel pin holes in nywhcI STD U.6262 0.6272 . 0.005 llVCl\U 0.6) 12 0.6322 . 0.0 I 0 OVChC 0.6362 0.6372 Flywhe el 3.174 l Outside Jiamcter of dowel pin in crankshaft STD 0.625 0.6257 . 0.005 oversize 0.630 0.6307 . 0.0 I 0 oversiie 0.635 0.6357 • 3·174 H l of dowel in flywheel, or nywhcel adapler 3·174 H Fit of dowel pin in flywheel STD 0.0005L 0.0012L . 0.00 oversize 0.0005L 0.0012L . 0.0 J 0 OVC r\iZC 0.0005L 0.0012l • Accessory drive 3-174 j Outside diamelr of accessory drive gear mounling 9.74P 9.7OO 9.7470 flange on crankshaft 3·174 z Inside diameter of crank ma ft pilot bore in accesry drive 9.7.Sꝃ 9.1520 9.7530 ge 3·174 Z ·j Fil of accesry drive gear on crankshaft 0.00 0.0040L 0.0060L See foot note al cntl of tnbl�. 3·Z Chan 1 ) )