l. Remove nut from the top bolt of the right hand No. 4 hanger bearing shock mount and orient the accelerometer
and bracket with the accelerometer pointing to the center of rotation and the connector pointed away from the
center, (use the small hole in the AVA accelerometer bracket) and tighten nut. See figure 10.
m. Repeat steps k and l for hanger bearings no. 5, 6 and 7.
n. Connect a 50-ft accelerometer cable to each hanger bearing accelerometer.
When routing cables, ensure that cables are secured
and tied away from rotating assemblies.
o. Identify each accelerometer cable and route the cables from the accelerometers aft along the hydraulic lines
past the C-BOX down into the cabin to the DAU and connect as follows:
NO. 1 Cross Shaft
NO. 2 Cross Shaft
p. Tie-wrap the accelerometer cables clear of all rotating components and flight controls.
PROCEDURE 10: FWDVIB CHECK SENSOR INSTALLATION (FORWARD OIL COOLER AND
HANGER BEARINGS 1-3)
a. Complete procedure 2.
b. Gain access to the forward transmission area, see figure 10.
c. Remove the self-locking nut from the stud at the 5 oclock position on the forward transmission oil cooler,
looking forward, see figure 11.
Figure 10. Typical Hanger Bearing Installation