TM 55-1520-240-23-9
11-147
INSTALL PITCH OR ROLL SPRING ASSEMBLIES
(Continued)
11-147
Make sure bushings are in bellcranks
before installing bolts or component
damage will result.
NOTE
Procedure is same to install pitch or
roll spring assemblies. Pitch spring is
shown here.
Impedance bolts are installed in flight
control connections. These bolts are
self-retaining and require a special
nut and torque (Task 1-13).
1.
Remove nut (1), two washers (2 and 3), and bolt
(4) from CCD actuator arm (5).
2.
Position lug (6) of pitch spring assembly (7) in
arm (5). Install bolt (4) two washers (3 and 2),
and nut (1). Do not torque nut at this time.
NOTE
Roll spring assembly is installed in
arm of roll magnetic brake.
3.
Remove nut (8), two washers (9 and 10), and
bolt (11) from idler bellcrank (12).
FLIGHT SAFETY PARTS
This is an installation critical flight
safety part. All aspects of its assembly
and installation must be ensured.
Ensure pitch spring is installed in the
pitch axis. Incorrect axis orientation
will adversely affect flight controls
force feel characteristics.
Ensure bearing is properly staked and
secure in the housing.
Ensure threaded end cap is secured
to the housing including installation of
lockwire.
Ensure proper attaching hardware
(impedance type bolt, nut, and
washers) is installed including
verification of bolt head orientation,
torque, and installation of cotter pins.
Loose attachments within flight control
secondary linkage will degrade
aircraft control. Missing components
may cause loss of control.
11-621
