TM 55-1520-240-23-10
12-13
INSTALL FIRE DETECTION SENSING ELEMENT
12-13
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Torque Wrench, 30 to 150 Inch-Pounds
Crowsfoot Attachment, 3/8 Inch
Materials:
Lockwire (E231)
Personnel Required:
Medium Helicopter Repairer
Inspector
References:
TM 55-1520-240-23P
Do not pinch, crush, kink, or make
sharp bends in element. Element can
be damaged.
NOTE
Procedure is same to install fire
detection sensing element on No. 1
or No. 2 engine. Installation of No. 1
engine element is shown here.
INSTALL CENTER SECTION
NOTE
Center section of element passes
over top of engine to connect right
and left sections of element.
1.
Remove caps from element (1).
2.
Bend element (1) as shown. Element must follow
locations of 12 clamps (2) and two brackets (3).
3.
Follow these guidelines when bending element
(1).
a.
Bend radius shall not be less than 1 inch.
b.
Bends shall be at least 3 inches from
brackets (3).
c.
Bends shall be at least 1/2 inch from clamps
(2).
12-38
