Stabilizer Troubleshooting - MD Helicopters 369 Series Maintenance Manual

CSP−HMI−2
In the following step, ensure
CAUTION
bearing race is not cocked on
torque tube, this will cause non−repairable
damage to bearing race and torque tube.
(13). While primer is wet, press torque tube
down through the bearing race until
bearing race is tight against flange on
torque tube.
(14). Inspect bearing race flanged surface to
Table 201. Troubleshooting Tailboom and Tail Surfaces
Symptom
High frequency vibration
NOTE: High frequency vibrations in helicopter can be caused by components in other systems (Ref. Sec.
64−00−00, 63−25−10, 63−25−30 and 71−00−00).
Page 212
TR 07−001
MD Helicopters, Inc
MAINTENANCE MANUAL
Probable Trouble
Fan assembly out of balance
Loose fan blades
Loose bolts/nuts on Horizontal or
Vertical stabilizer
53−50−30
.
ensure no warpage occurred during
installation.
(15). Reinstall vertical stabilizer torque
tubes (Ref. Vertical Stabilizer Torque
Tube Replacement).
(16). Reinstall vertical stabilizers (Ref.
Vertical Stabilizer Replacement).

15. Stabilizer Troubleshooting

(Ref. Table 201)
Corrective Action
Re−balance fan assembly.
Replace and re−balance fan assy.
Inspect mounting hardware; adjust or
replace as necessary.