TM 1-1520-238-23
Change 4
13-91
13.28.
ECS CREW STATION DUCTS REMOVAL/INSTALLATION - continued
h. Remove duct (30) from helicopter.
(1) Remove two screws (31) and washers (32)
from duct (30).
(2) Pull duct (30) and pile (33) from hook (34).
(3) Remove duct (30).
13.28.4. Cleaning
a. Clean removed and attaching parts (para
1.47).
13.28.5. Inspection
a. Check ends of ducts, clamps, and brackets
for excessive wear, cracks, or breaks (para
13.1).
b. Check sleeves, cuffs, and insulation on ducts
for rips or tears (para 13.1).
c. Check rubber seals at both ends of ducts for
chafing, cuts, or fraying (para 13.1).
d. Check duct nutplates for loose rivets and
stripped or damaged threads (para 13.1).
e. Check removed and attaching parts for corro-
sion (para 1.49).
f. Check hook-and-pile fasteners for tears,
cracks, or loose attachment.
(1) If pile (33) or hook (34) is debonding from
duct or floor, attach with adhesive. Use
adhesive (item 13, App F).
13.28.6. Installation
NOTE
Tape may be applied to duct wherever
chafing is occurring. Tape may not be
used to repair ducts with holes, cracks,
etc.
a. Wrap duct (35) with one revolution of tape
(36). Use tape (item 208, App F).
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M04-3008-9
30
31
32
M04-3008-10
30
33
34
M04-3008-22
36
35
