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Figure 5-15. Removal and Installation of EPU SRUs.
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TM-9-1270-219-13-P Fire and Flight Air Data Subsystem Helicopter Armament: XM 143 PN 03-004-02 Manual
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Figure 5-16. Sensor Installation
TM 9-1270-219-13&P
(3)
Check
of
EPU
as
detailed
in
(2) Install rear cover as detailed in paragraph
Section III.
l. P r e s s u r e T r a n s d u c e r U n i t I n s t a l l a t i o n .
(3)
Check
of
EPU
as
detailed
in
Section III.
(1) Install PTU (5) into chassis (4) ensuring
connectors mate firmly and correctly with
n. Front
Panel
Assembly
Installation.
f r o n t panel assembly (2).
(1) Install front panel assembly (2) to chassis
(2) Tighten two captive screws (3) on the front
(4) with four captive screws (1).
panel between the pneumatic connectors and
two captive screws (6) on the rear of the
module.
(2) Install PSU as detailed in paragraph 5-14m.
(3) Install rear cover as detailed in paragraph
( 3 ) Install PTU as detailed in paragraph 5-14I.
(4) Install CPU as detailed in paragraph 5-14k.
(4)
Check
as
detailed
in
Section
Ill.
(5) Install AIU as detailed in paragraph 5-14j.
m. P o w e r S u p p l y U n i t I n s t a l l a t i o n .
(6) Install rear cover as detailed in paragraph
(1)
Install
PSU
(12)
into
chassis
(4)
with
jacking screw (13) ensuring the connector
(7)
Check
of
EPU
as
detailed
in
mates firmly and correctly with the front
Section
III.
panel.
Section
VI.
DISASSEMBLING
AND
ASSEMBLING
THE
SENSOR
INSTALLATION
NOTE
Disassembling the Sensor Installation.
a . Remove boom grounding strap (9, fig. 5-16) from
Bolts
(4)
securing
support
assemblies
support assembly (6) by removing screw (8)
(6
and
1)
are
torqued
only
during
and three washers (7).
alignment and boresighting.
b.
Remove
the
three
bolts
(4)
and
washers
(3)
b. Tighten, but do not torque, bolts (4).
(1)
to
support
securing support assembly
assembly
(6).
Install
boom
grounding
strap
(9)
on
support
c.
assembly (6) using screw (8) and three washers
c. Remove support assembly (1) and gasket (2)
(7).
from
support
assembly
(6).
d.
Perform
alignment
and
boresighting
procedures
Assembling the Sensor Installation.
( R e f e r to TM 9-1090-206-30).
Install gasket (2, fig. 5-16) and support assembly
a.
(1)
on
support
assembly
(6)
using
bolts
(4)
a n d washers (3).

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