TM 1-1520-238-23
13-78
13.25.
AIR DUCT NO. 9 REMOVAL/INSTALLATION - continued
c. Remove cuff (1) from air duct No. 9 (2) and air
duct (3).
(1) Remove tape (4) and separate cuff (1)
halves.
(2) Remove cuff (1) halves.
d. Remove duct (2) from ducts (3) and (5) and
bulkhead (6).
(1) Loosen two clamps (7) from flexible hose (8).
(2) Enter pilot station (para 1.56). Observe all
safety precautions.
(3) Loosen two clamps (7) from sleeve (9).
(4) Remove four screws (10), washers (11), and
two clamps (12).
(5) Remove clamps (7), hose (8), and sleeve (9).
(6) Remove duct (2).
13.25.4. Cleaning
a. Wipe removed and attaching parts with a
clean rag.
13.25.5. 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 removed and attaching parts for corro-
sion (para 1.49).
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