AFT HANGER BEARING ASSEMBLY/DISASSEMBLY

TM 1-1520-238-23 6-12.4 Change 9 6.1A. AFT HANGER BEARING ASSEMBLY/DISASSEMBLY – continued NOTE The output flange, one bearing retainer, and the ball bearing are removed as an assembly. (5) Remove output flange (11), two bearing retainers (9) and ball bearing (12). 6.1A.4. Inspection (1) Inspect bearing (12) for nicks, pits and scratches (none allowed). If damage is noted, replace hanger bearing (13). (2) Inspect bearing for corrosion. Remove any corrosion and debris from surface using Scotchbrite pad (item 130, App F). (3) Clean Teflon races using cheesecloth (item 51, App F) and alcohol (item 25, App F). 6.1A.5. Installation CAUTION After hanger bearings have been in use, they exhibit particular wear patterns. Mismatching of parts will result in excessive wear. a. Assemble hanger bearing (13). (1) Install spacer shims (10), output flange (11), two bearing retainers (9), and ball bearing (12) onto hanger bearing (13) in the same order and orientation as removed. (2) Install six bolts (6) 12 flat washers (8), and six new self-locking nuts (7). CAUTION Bolt heads shall be on the side as spacer shims. Improper installation can often damage equipment. (3) Torque six self-locking nuts to 65-75 inch pounds above running torque, and apply torque seal using torque wrench (item 441, App H). (4) Install bearing spacer (4), with flat side in, over output flange (3) and against ball bearings (12). (5) Install spacer shims (10), output flange (11), two bearing retainers (9), and ball bearing (12) into hanger bearing (13) in same order and orientation as removed. (6) Install pilot spacer (2) over input flange (3), with flat side facing out. (7) Install self-locking nut (1) onto threaded end of input shaft (3) and tighten until finger-tight. GO TO NEXT PAGE