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 3-9. Torsio11al Vibration Damper, 1"l+1d1eel, Accessory Drive Gear, a11<l Tmnsmission Drive Gearshafl RepairStc+1dard8 -Continued Fig. Ref. Point of Sizes nnd fits Wear mnent No. letter measurement of new part s limits Transmison 3·174 n Outside diameter of hub on transmission acceory 2.8320 2.8330 2.8315 genrshaft drive geahnft 3-174 s Inside diameter o f transmission acc�ssory drive 2.8338 2.8346 2.350 gearshaft pilot bore in crankshaft 3·174 n·S Fit of transmission 3ccesry drive gearshaft in 0.0008L 0.00261. 0.0035L crankshaft 3-174 p Inside diameter of dowel pin hole in transmission drive gearshaft 3-174 p Inside diameter of dowel pin hole in transmission dril geshaft STD 0.6262 0.6272 • 0.005 oversize 0.6312 0.6322 • 0.0 I 0 oversize 0.6362 0.6372 • 3-174 t Outsize diameter of dowel pin in crankshaft STD 0.6255 0.6257 • 0.005 oversize 0.6305 0.6307 • 0.0 I 0 oversize 0.6355 0.6357 . 3-174 t-p Fit of dowel pin in transmission drive gearshaft STD 0.005 oversize 0.0 I 0 oversize Refer lo paragraph 3-37c for explanation of symls. 3-61. Repair a. Gene�·al. Refer to paragraph 3-38. b. Torsional Vibration Damper. Replace tor- sional vibration damper when it does not conform to limits specified in repair standa1·ds (table 3-9). Replace damper when dented or distorted or if evidence of leaking is present. Remove minor im- perfections with crocus cloth dipped in dry clean- ing solvent or mineral spirits paint thinner. o. Flywheel ancl Transmission rive Gecirshaft. Repair elongated dowel pin holes in flywheel and gearshaft by reaming to either 0.005 or 0.010 inch oversize. Install the appropriate oversize dowel pins in the crankshaft. It will be necessary to line ream the crankshaft flange, flywheel, and trans- 0.0005L 0.0012L . O.OOOSL 0.0012L • O.OOOSL 0.0012L . mission drive gearshaft to install the replacement oversize pins. d. Transmission Drive Gecirshaft B1,shing-Type Becwing. When the gearshaft bushing-type bear- ing needs replacement, use a suitable arbor and an arbor press to remove bushing-type bearing as shown in figure 3-179. Press new bushing-type bearing into gearshaft using arbor press as shown in figure 3-180. Ream the bushing-type bearing from 1.3775 to 1.3780 inch after installation. When oversize dowel pins have been installed in the crankshaft, the transmission drive gearshaft dowel pin holes must be reamed in the proper over- size dimension. e. Accessory D1·ive Gectr. Refer to paragraph 3-3 for repair of accessory drive gear. Change 1 3-91