TM 55-1520-240-23-9
11-102
INSTALL YAW AND THRUST IDLER BELLCRANK SUPPORT
11-102
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Torque Wrench, 0 to 150 Inch-Pounds
Materials:
None
Personnel Required:
Medium Helicopter Repairer
Inspector
References:
TM 55-1520-240-23P
FLIGHT SAFETY PARTS
This is an installation critical flight
safety part. All aspects of its assembly
and installation must be ensured at
each joint connection and mounting to
the airframe.
Ensure that all bushings are properly
installed (including orientation) in
each clevis of the bellcrank.
Ensure proper attaching hardware
associated with all components
mounted to this support assembly
(impedance type bolt, nut, and
washers) is installed including
verification of bolt head orientation,
torque, and installation of cotter pins.
Ensure all hardware mounting the
support assembly to the pallet
assembly is secure and that there is
no evidence of loose pallet inserts.
Loose attachments within flight control
secondary linkage will degrade
aircraft control. Missing components
will cause loss of control.
1.
Position yaw and thrust idler bellcrank support
(1) on pallet (2), arm (3) down and outboard.
Install eight bolts (4) and eight washers (5).
2.
Torque bolts (4) to 45 inch-pounds.
INSPECT
11-523
