TM 1-1520-238-23
13-84
13.27.
AIR DUCT NO. 11 REMOVAL/INSTALLATION - continued
b. Remove duct No. 11 (1) from air ducts (2) and
(3).
(1) Loosen four clamps (4) from sleeve (5) and
flex hose (6).
(2) Remove clamps (4), sleeve (5), and hose (6).
(3) Remove duct (1).
13.27.4. Cleaning
a. Wipe removed and attaching parts with a
clean rag.
13.27.5. 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 bulkhead for cracks and elongation of
holes (para 13.1).
e. Check gasket on duct for cuts or gouges. Re-
place defective gasket.
f. Check duct nutplates for loose rivets and
stripped or damaged threads (para 13.1).
g. Check removed and attaching parts for corro-
sion (para 1.49).
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