ROTOR TACHOMETER VISUAL CHECK

TM-55-1520-240-T-2 CH-47D Heilcopter Manual
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TM 55-1520-240-T 8-15.2 ROTOR TACHOMETER VISUAL CHECK INITIAL SETUP Applicable Configurations: All Tools: Electrical Repairer’s Tool Kit, N S N 5 1 8 0 - 0 0 - 3 2 3 - 4 9 15 Materials: None Personnel Required: 68F10 Aircraft Electrician References: T M 5 5 - 1 5 2 0 - 2 4 0 - 23 Equipment Condition: T M 5 5 - 1 5 2 0 - 2 4 0 - 2 3: Battery Disconnected Electrical Power Off Hydraulic Power Off Left and Right Baffles Open Under Aft Transmission T A S K R E S U LT 1. Check pilot’s rotor tachometer indicator If tachometer (1 ) is loose or damaged, tighten or (1). replace it as required. 2. Check copilot’s rotor tachometer indica- If tachometer (2) is loose or damaged, tighten or tor (2). replace it as required. 3. Check No. 1 generator (3). If plug (4) is loose or damaged or wiring to plug is damaged, tighten or repair it as required. 4. Check No. 2 generator (5). If plug (6) is loose or damaged or wiring to plug is damaged, tighten or repair it as required. FOLLOW-ON MAINTENANCE: Left and right baffles closed under aft trans- mission. 8-335

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