TASK 4 BALANCE TAIL ROTOR
The blade with the reflective tape will be referred to in
the AVA diagnostics as the No. 1 outboard blade, rotate
the blades in the direction of rotation and the next blade
is No. 1 inboard, and the next blade is No. 2 outboard
and the next blade is No. 2 inboard. See figure 13.
Figure 13. Locations for Installing Optical RPM Sensor Bracket and Reflective Tape
PROCEDURE 3: ACCELEROMETER INSTALLATION
a. Install accelerometer (28110900) on accelerometer mounting bracket (29313000).
b. Remove the screw directly above the tail gearbox support strut airframe mount. See figure 14.
c. Mount the accelerometer with bracket to the tail pylon using the screw previously removed. Ensure that the
bracket is oriented so that the accelerometer will be vertical using the support strut as a reference with the
connector facing up. See figure 14.
d. Connect accelerometer cable (29105600) to accelerometer and secure accelerometer cable to support strut,
ensuring cable is not pulled taut.