TM 1-1520-238-23
7-583
7.154.
ENVIRONMENTAL CONTROL UNIT SHUTOFF VALVE DUCT
REMOVAL/INSTALLATION continued
7.154.3. Removal
a. Remove duct (1).
(1) Remove coupling (2).
(2) Remove nut (3) and coupling (4). Use socket.
(3) Remove two screws (5), washers (6), and
clamp (7).
(4) Remove duct (1).
(5) Remove and discard packings (8) and (9).
b. Remove and discard packing (10) from tube
(11).
7.154.4. Cleaning
a. Wipe removed and attaching parts with a
clean rag.
7.154.5. Inspection
a. Check tube and duct for cracks, dents, and
scratches (para 7.114).
b. Check removed and attaching parts for corro-
sion (para 1.49).
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