TM 1-1520-238-23
15-150
Change 5
15.40.
APU EXHAUST NOZZLE AND DUCT REMOVAL/INSTALLATION - continued
e. Remove exhaust duct (12) from helicopter.
(1) Remove eight screws (13) and washers (14).
(2) Remove screw (15), two washers (16), and
nut (17) from bracket (18).
(3) Remove duct (12) and nozzle (8) from heli-
copter.
(4) Remove nozzle (8) from duct (12).
15.40.4. Cleaning
a. Clean removed and attaching parts (para
1.47).
15.40.5. Inspection
a. Check exhaust nozzle and duct for cracks,
dents, and distortion (para 15.1).
b. Check exhaust nozzle and duct for oxidation,
erosion, and pitting (para 15.1).
c. Check removed and attaching parts for corro-
sion (para 1.49).
15.40.6. Repair
a. Repair cracks, tears, holes, punctures or roll-
back on insulation blanket if damage is 4.0
inches or less.
(1) Apply tape to overlap damaged or rolled back
area at least 0.50 INCH. Use tape (item 204,
App F).
15.40.7. Installation
a. Install exhaust duct (12) and nozzle (8) in heli-
copter.
(1) Position exhaust nozzle (8) in duct (12).
(2) Aline duct (12) with aft bulkhead (19).
(3) Insert screw (15) through washer (16), brack-
et (18), and washer (16).
(4) Install nut (17).
(5) Install eight screws (13) and washers (14).
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