TM 1-1520-238-23
4-173
4.55.
NO. 2 ENGINE INSTALLATION – UPPER CONNECTIONS – continued
CAUTION
To prevent damage to exhaust system,
ensure that the engine seal ring is
installed properly before attaching the
primary exhaust nozzle.
NOTE
When installing coupling assembly, tight-
en coupling nut to approximately 70 per-
cent of maximum indicated torque. Tap
around outside of coupling with a rubber
mallet to distribute band tension. Torque
nut to specified value. Do not over torque.
h. Install primary nozzle coupling (17). Torque
nuts (18) and (19) to 55 INCH-POUNDS.
(1) Slide nozzle (20) forward until alinement pin
(21) engages hole in engine flange (22).
(2) Position coupling (17) where engine flange
(22) meets nozzle (20).
(3) Position coupling (17) with coupling nut (18)
at bottom of nozzle (20).
(4) Install upper coupling nut (19).
(5) Torque nuts (18) and (19) alternately to 55
INCH-POUNDS. Use torque wrench.
i. Install air duct (23) on nozzle (20).
(1) Install three screws (24) through washers
(25) and flange (26).
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24
25
20
17
17
20
22
21
17
18
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M04-2998-6
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