TM 1-1520-238-234-4324.137.ENGINE TURBINE SPEED CONTROL UNIT ADJUSTMENT (T700-GE-701C ENGINE) – continuedNOTETo increase NP speed, turn NPadjust-ment screw clockwise. To decreaseNPspeed, turn NPadjustment screwcounterclockwise.The engine 101% RPM can bechecked by monitoring the Main RotorIndicator for illumination or flickeringillumination of the 102% light segment.Step e is used to confirm availableRPM will illuminate the 100% NR andNP segments fully and may cause the102% segments to flicker illuminate orilluminate fully.e. Slowly adjust NPadjustment screw (2) on con-trol unit (3) until ENG RTR indicator flickers at102% NP .NOTEStep f checks the ability of the engineturbine speed control unit to reduce en-gine RPM (NP).f. Slowly adjust screw (2) on control unit (3) un-til ENG RTR indicator 98% NP light extin-guishes.g. Slowly adjust screw (2) on control unit (3) un-til ENG RTR indicator flickers at 102% NP .h. Adjust screw (2) on control unit (3) an addi-tional 1/8th turn in clockwise direction.i. Hold screw (2). Tighten nut (1).j. Lockwire nut (1) to control unit (3). Use wire(item 222, App F).GO TO NEXT PAGEM04-4553-3321
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