TM 1-1520-238-23
4-351
4.108.
NO. 1 ENGINE DRAIN MANIFOLD REMOVAL/INSTALLATION – continued
f. Remove hydromechanical unit (HMU) drain
hose (18) from manifold (2).
(1) Hold adapter (19). Remove nut (20).
g. Remove manifold (2) from common drain nip-
ple (21).
(1) Hold nipple (21). Use open end wrench.
(2) Remove nut (22).
h. Remove drain hose (23) from manifold (2).
(1) Hold nipple (24). Use open end wrench.
(2) Remove nut (25).
i. Remove outlet nipple (24) from manifold (2).
(1) Hold manifold (2).
(2) Remove nipple (24). Use open end wrench.
(3) Remove and discard packing (26).
4.108.4. Cleaning
a. Clean hose nuts, tube nuts, outlet nipple, and
common drain nipple (para 1.47).
4.108.5. Inspection
a. Check hose nuts, tube nut, outlet nipple, and
common drain nipple for damaged threads.
None allowed.
b. Check engine clip for cracks. None allowed.
c. Check hose nuts, tube nut, outlet nipple, com-
mon drain nipple, and engine clip for corro-
sion (para 1.49).
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M04-2553-4
18
20
19
2
21
22
M04-2553-5
2
26
24
25
23
