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INSTALL  COMBINING TRANSMISSION INPUT SHAFT OIL SEAL
REMOVE  COMBINING TRANSMISSION FORWARD OUTPUT SHAFT OIL SEAL

TM-55-1520-240-23-5 CH-47D Heilcopter Manual
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TM 55-1520-240-23-5 6-65 INSTALL COMBINING TRANSMISSION INPUT SHAFT OIL SEAL     (Continued) 6-65 WARNING Wear Kevlar gloves when handling hot retainer.  Hot retainer can cause burns. CAUTION Do not heat retainer over  250  F (120  C). Metal can be damaged. 2. Heat retainer (1) to  230    to 250  F (110    to 120  C). Use gun-type heater. Check temperature with pyrometer. 3. Install packing (2) in retainer (1). 4. Install seal (3) in retainer (1), flat side up.  Use aluminum tube. 5. Install retaining ring (4). NOTE Procedure is same to install retainer on left or right input shaft.  Installation on left shaft is shown here. 6. Coat packing (5) with oil (E254).  Install packing on retainer (1). WARNING Oil (E254) is toxic.  It can irritate skin and cause burns. Avoid inhaling.  Use only with adequate ventilation.  Avoid contact with skin, eyes, or clothing. In case of contact, immediately flush skin or eyes for at least  15 minutes. Get medical attention for eyes. 7. Apply light coat of grease (E190) to lip of seal (3).  Apply light coat of oil (E254) to surface of shaft (6). Install retainer (1) on transmission (7). 8. Install three washers (8) and nuts (9) on studs (10).  Torque nuts to  70-85 inch-pounds. INSPECT FOLLOW-ON MAINTENANCE: Install combining transmission adapter assembly and engine drive shaft (Task 6-32). Close pylon lower fairing (Task 2-2). Close pylon hinged fairing (Task 2-2). END OF TASK Change 1 6-251/(6-252 blank)







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