TM 1-1520-238-23
13-41
13.13.
ENCU OVERBOARD EXHAUST DUCT REMOVAL/INSTALLATION - continued
13.13.3. Removal
a. Remove discharge duct (1) from ENCU (2) and
overboard exhaust duct (3).
(1) Loosen two clamps (4) from hose (5).
(2) Slide clamps (4) and hose (5) on duct (1).
(3) Loosen two clamps (6) from hose (7).
(4) Slide clamps (6) and hose (7) on duct (1).
(5) Remove duct (1).
b. Remove duct (3) from airframe (8).
(1) Remove six screws (9) and washers (10)
from duct (3).
(2) Remove duct (3).
13.13.4. Cleaning
a. Clean sealing compound from ENCU and duct
assembly (para 1.47).
b. Wipe removed and attaching parts with a
clean rag.
13.13.5. Inspection
a. Check ENCU ducts, hoses, and clamps for
chafing, cracks, or wear (para 13.1).
b. Check overboard exhaust duct nutplates for
loose rivets and stripped or damaged threads
(para 13.1).
c. Check removed and attaching parts for corro-
sion (para 1.49).
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