ASSEMBLE COPILOTS COCKPIT CONTROL ASSEMBLY
INSTALL YAW BELLCRANK
Install bushing (dissimilar metals) (151), flange
inward, in hole (152) of support (2).
Install bushing (dissimilar metals) (153) opposite
hole (152) in support (2).
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 orientation) in
the output and input clevises of the
Ensure bellcrank hub bearings are
serviceable and properly installed.
Ensure associated bushings are
properly installed in the adjacent
control box assembly.
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
primary linkage will degrade aircraft
control. Missing components will
cause loss of control.
Install bellcrank (140) in support (2), arm (154)
up and forward.
Install bolt (155), two washers (156 and 157),
and nut (158) in support (2). Remove tag from
Torque nut (158) to 60 to 90 inch-pounds.
Install cotter pin (159).
Check bolt (155). Bolt 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 85.