TM 55-1520-240-23-9
11-239
INSTALL TUNNEL AFT CONNECTING LINKS
11-239
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Torque Wrench, 30 to 150 Inch-Pounds
Materials:
Epoxy Primer (E292.1)
Abrasive Paper (E11)
Gloves (E184.1)
Parts:
Cotter Pins
Personnel Required:
Medium Helicopter Repairer
Inspector
References:
TM 55-1520-240-23P
Task 1-13
Task 11-33
FLIGHT SAFETY PARTS
This is an installation critical flight
safety part. All aspects of its assembly
and installation must be ensured.
Ensure that both rod end jam nuts are
installed and torqued.
Ensure that the rivet through the fixed
rod end insert and rod end bearing
is secure.
Ensure rivet, roll pin, and associated
hardware through rod end insert at
adjustable end of link assy is secure.
Ensure proper application of ALBI fire
retardant coatings to the link assy.
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.
FLIGHT SAFETY PARTS
This is an installation critical flight
safety part. All aspects of its assembly
and installation must be ensured.
Ensure that both rod end jam nuts are
installed and torqued.
Ensure that the rivet through the fixed
rod end bearing is secure.
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.
Do not install connecting link unless it
is same length as link being replaced.
If length is not same, connecting
link can cause flight controls to be
out-of-rig.
NOTE
Procedure is same to install left
and right connecting links. Right
connecting link at sta. 401 and 444.5
is shown here.
Bolts installed in flight control system
are self-retaining bolts. During
installation of connecting links make
sure all bolts used are self-retaining
(Task 1-13).
11-929
