TEST AND ADJUST LANDING LIGHT

ASSEMBLE LANDING LIGHT (AVIM) (Continued) - TM-55-1520-240-23-7_647

TEST AND ADJUST LANDING LIGHT (Continued) - TM-55-1520-240-23-7_649

TM-55-1520-240-23-7 CH-47D Heilcopter Manual
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TM 55-1520-240-23-7 9-78 TEST AND ADJUST LANDING LIGHT 9-78 INITIAL SETUP Applicable Configurations: All Tools: Electrical Repairer’s Tool Kit, NSN 5180-00-323-4915 Power Switch, Two-Position Control Switch, Five-Position Terminal Board, Eight Terminal DC Power Supply, 25 Ampere Materials: None Personnel Required: Aircraft Electrician (2) Inspector Equipment Condition: Off Helicopter Task Test Setup General Safety Instructions: Do not look into lighted NVG landing light. Infra-red light output can seriously injure eyes. 1. Connect test setup (1) to landing light (2). 2. Turn on power supply (3). Adjust power supply output to 28 vdc. 3. Set power switch (4) to on. Check lamp (5). Lamp shall come on. Check visually without 17 . Check for heat output with 17 . 4. Set power switch (4) to off. Check lamp (5). Lamp shall go off. Check visually without 17 . Check for heat output with 17 . 5. Set control switch (6) to EXTEND. Check light (2). Light shall fully extend and stop. 6. Measure length of spring (7). Record length. 7. Set control switch (6) to RETRACT. Check light (2). Light shall fully retract and stop. 9-263

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