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SERVICE  ENGINE  AND  COMBINING TRANSMIS- SIONS
1-55 SERVICE ROTARY-WING HUB OIL TANK

TM-55-1520-240-23-1 UH-1H/V and EH-1H Aircraft Manual
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TM 55-1520-240-23-1 1-54 SERVICE TRANSMISSION OIL SYSTEMS    (Continued) 1-54 20. Open oil filler cap (16). 20.1.    Inspect filler screen (Task 6-71.1). 21. Add oil (E253, E254.1, or E254) through filler (17) until oil level at sight gage (13) is at FULL. Check that oil is visible in sight gages (14 and 15). 22. Close oil filler cap (16). 23. After refilling a drained transmission, perform a 5 minute ground run (TM 55-1520-240-10). Check oil level at sight gage (13, 14, and 15).  Repeat steps 20 thru 23 if needed. 24. Close aft pylon access doors (12) (Task 2-2). FOLLOW-ON MAINTENANCE: Restencil all transmissions as required to correctly identify lubrication oil to be used after servicing. END OF TASK 1-213







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