INSTALL ROLL IDLER BELLCRANK
Bushings must be in bellcranks and
links before installing bolts; otherwise,
damage to components will result.
If a crack in the connecting link,
bellcrank, or support is suspected
during installation, refer to TM
Impedance bolts are installed in flight
control connections. These bolts are
self-retaining and require a special
nut and torque (Task 1-13).
Remove two nuts (1 and 2), four washers (3, 4, 5,
and 6), and two bolts (7 and 8) from support (9).
Remove bushings (9.1 and 9.2) from support
(9). Clean bushings and bores with dry cleaning
solvent (E162) and cloth (E120). Wear gloves
(E184.1) and goggles.
Coat bushings (9.1 and 9.2) with epoxy primer
(E292). Install bushings wet in support (9).
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
Ensure that all bushings are
properly installed (including bushing
orientation) in each clevis of the
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.
To obtain proper clamp-up and
prevent damage to controls, if a light
washer is used under nut, prior to
applying torque make sure the washer
does not hang up in the bolt retaining
Position roll idler bellcrank (10), lugs (11) forward,
and arm (12) outboard in support (9). Install two
bolts (7 and 8), four washers (3, 4, 5, and 6) and
two nuts (1 and 2) in support. Remove tag from
Torque two nuts (1 and 2) to 30 to 45
inch-pounds. Use wrench and dial indicating
scale. Install two cotter pins (13 and 14).
Check two bolts (7 and 8). Bolts shall not rotate
with torque less than 10 inch-pounds. There
shall be no axial looseness. If bolt rotates or is
loose, add washer under nut, and repeat step 3.
Remove nut (15), two washers (16 and 17), and
bolt (18) from lugs (19) of bellcrank (10).
Remove bushings (10.1 and 10.2) from bellcrank
(10). Clean bushings with dry cleaning solvent
(E162) and cloth (E120). Wear gloves (E184.1)