AFT HANGER BEARING COUPLING REMOVAL/INSTALLATION

TM 1-1520-238-23 Change 4 6-51 6.9. AFT HANGER BEARING COUPLING REMOVAL/INSTALLATION – continued CAUTION When installing hanger bearing coupling, ensure that bolts are installed through 0.250 INCH bolt holes on coupling for- ward flange and on aft hanger bearing input flange. Do not install bolts through any of 0.500 INCH lightening holes. Instal- lation of bolts through lightening holes will result in failure of drive shaft and/or cou- pling. b. Install coupling (1). Torque bolts (2) and (5) to 125 INCH-POUNDS. (1) Position coupling (1) between flange (7) and shaft (4) with nutplates (14) facing aft. Aline bolt holes. (2) Install five bolts (5) through flange (7) and coupling (1) aft flange (6). (3) Install five bolts (2) through coupling (1) for- ward flange (3) and shaft (4). (4) Torque bolts (2) and (5) to 125 INCH- POUNDS. Use torque wrench adapter and torque wrench. (5) Apply corrosion preventive compound to bolts (2) and (5). Use corrosion preventive compound (item 62A, App F). c. Inspect (QA). d. Install access fairing R410 (para 2.2). e. Perform drive system vibration maintenance operational check (TM 1-1520-238-T). END OF TASK M04-0443-4 5 1 2 4 14 7 6 3