TM 55-1520-240-23-9
11-237
INSTALL TUNNEL CONNECTING LINKS
11-237
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Torque Wrench, 0 to 30 Inch-Pounds
Torque Wrench, 30 to 150 Inch-Pounds
Material:
Abrasive Paper (E11)
Epoxy Primer (E292.1)
Alodine (E65)
Gloves (E184.1)
Sealant, Type 2, Class B-1/2 (E342.1)
Dry Cleaning Solvent (E162)
Cloths (E120)
Parts:
Cotter Pins
Personnel Required:
Medium Helicopter Repairer
Inspector
References:
TM 55-1520-240-23P
Task 1-13
Task 11-33
General Safety Instructions:
Epoxy primer (E292.1) is flammable
and toxic. It can irritate skin and
cause burns. Use only with adequate
ventilation, away from heat and
open flame. Avoid contact with skin,
eyes, or clothing. In case of contact,
immediately flush skin or eyes with
water for at least 15 minutes. Get
medical attention for eyes.
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 is secure.
Ensure the bushing is installed on
the bolt head side of the clevis at
each end of this link. Omission of this
bushing will result in improper joint
stack-up.
Ensure that the bonding jumper clamp
is installed and properly located.
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.
11-922
