TM 1-6625-724-13&P0072 000072 00-9TASK 2 - BALANCE TAIL ROTORPROCEDURE 1: EQUIPMENT INSTALLATIONa. Remove AVA tail rotor balancing equipment from transport case. Check for possible damaged equipment andfrayed cables.b. Install DAU in canvas carrying case.c. Place DAU in a back seat with the connectors facing up and secure using aircraft shoulder and lap belts andcanvas straps.d. Connect the DC power cable (29104700) to the aircraft power receptacle in the overhead panel and to the DAUreceptacle marked 28 Vdc.e. Place CADU in front seat. Connect CADU to DAU cable (29325601) to CADU and to DAU receptacle markedCADU.PROCEDURE 2: ACCELEROMETER INSTALLATIONa. Mount accelerometer mounting bracket (29313000) on the top stud of the tail rotor gearbox flange, figure 6, withexisting hardware.b. Install accelerometer (28110900) on bracket with the connector pointing up.c. Connect accelerometer cable (29105600) to accelerometer.Figure 7. Installation of Accelerometer and Optical RPM Sensor Mounting BracketsCAUTIONKeep accelerometer cable snug around tail boom toensure cable does not contact tail rotor. Don’t pullcable taut at accelerometer.d.Wrap cable around tail boom and pass cable into cockpit. Ensure that there is a 1-inch loop of slack near theaccelerometer to prevent the cable from being pulled out of the potted connector.Opt. Tach. SensorReflective TapeAccelerometer 4
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