INSTALL HEATER AIR PRESSURE SWITCH

TM-55-1520-240-23-10 UH-1H/V and EH-1H Aircraft Manual
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TM 55-1520-240-23-10 13-53 INSTALL HEATER AIR PRESSURE SWITCH 13-53 INITIAL SETUP Applicable Configurations: All Tools: Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692 Materials: Lockwire (E231) Parts: Packings Personnel Required: Medium Helicopter Repairer Inspector References: TM 55-1520-240-23P 1. Install two packings (1) on nipples (2). Install nipples in switch (3). 2. Position switch (3) on structure (4). 3. Install three nuts (5) and washers (6) on back of switch (3). 4. Connect electrical connector (7). Lockwire connector. Use lockwire (E231). 5. Connect two tubes (8). INSPECT FOLLOW-ON MAINTENANCE: Perform operational check (TM 55-1520-240-T). Install heater compartment acoustic blanket (Task 2-210). END OF TASK 13-159

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