TM 1-6625-724-13&P
0072 00
0072 00-9
TASK 2 - BALANCE TAIL ROTOR
PROCEDURE 1: EQUIPMENT INSTALLATION
a. Remove AVA tail rotor balancing equipment from transport case. Check for possible damaged equipment and
frayed 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 and
canvas straps.
d. Connect the DC power cable (29104700) to the aircraft power receptacle in the overhead panel and to the DAU
receptacle marked 28 Vdc.
e. Place CADU in front seat. Connect CADU to DAU cable (29325601) to CADU and to DAU receptacle marked
CADU.
PROCEDURE 2: ACCELEROMETER INSTALLATION
a. Mount accelerometer mounting bracket (29313000) on the top stud of the tail rotor gearbox flange, figure 6, with
existing 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 Brackets
CAUTION
Keep accelerometer cable snug around tail boom to
ensure cable does not contact tail rotor. Don’t pull
cable 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 the
accelerometer to prevent the cable from being pulled out of the potted connector.
Opt. Tach. Sensor
Reflective Tape
Accelerometer 4
