TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
Page 344 of 532
TM 9-2815-220-34 Fige 3-226. l're"i11g fan clriv11 gcnr1/1afi i1110 upper gear1I/I ll beari "8· (4) Pition assembled fan drive driven bevel gearshaft, shims, ball bearing, spacer, ball bearing and retaining ring in front fan drive housing (2) and secure with lt (36) new key washer ( and lk plate (&). Bend tab on washer. (5) Determine backlash for fan drive bevel gearshaft. Position original shims (4, fig. 8-216) on end of inner bearing race (side oppite bearing trade mark) on front bevel gearshaft ball bearing. Measure total thickness of bearing face and shim, from shim on inner race to face of outer race, with end play remov. Thickness must be from 0.7Y1 inch minimum to 0.7911 inch maximum. When total thickness i s more than 0.7911 inch, strip 0.2 inch thick laminations from the shim pack until the correct thickness is obtained. When total thickness is ls than 0.7Y1 inch, add O. inch 3-132 thick shims (stripped from a new shim pack part No. Vࣅ5) as necessary. Figure 3-à illustrates shim lation and measuring points. (6) Pition shim (fig. 3-ã) of predetermined thickness (lig. 3-à) over bearing hub of front n drive bevel gearshaft, and prs bevel gearshaft front ball bearing on gearshaft (fig. 3-227). Install bevel gearshaft rear ball bearing in the same manner. cure geahaft rear ball bearing with retaining ring (", fig. 3-216). Figure 3-227. Pre"ing fro111 bci·cl gear1/1a fi ball bearin on gcar1hoſt. (7) Install bearing support (16, fig. 8-216) on fan drive bevel gearshaft front ball bearing (19), and install bearing support (#) on rear ball bearing (?). Pition aembled fan drive bevel gearshaft., ball bearings, and bearing supports in front drive housing (2) and secure with four slotted nuts (1 and cotter pins (18). (8) Pition fan drive oil seal housing (fig. 3-ä) on arbor press, coat flange face of new oil seal with plastic lead sealer, and pition oil seal on housing ba with lip of seal toward fan drive housing cover mounting face and prs oil seal in housing.