TM 1-1520-238-23
12-139
12.43.
NO. 1 ENGINE FIRE EXTINGUISHER FITTING REPLACEMENT - continued
12.43.4. Cleaning
a. Wipe removed and attaching parts with a
clean rag.
12.43.5. Inspection
a. Check removed and attaching parts for
stripped or damaged threads (para 12.33).
b. Check removed and attaching parts for corro-
sion (para 1.49).
12.43.6. Installation
a. Install nipple (4) on new fitting (6). Torque nut
(11) to 345 INCH-POUNDS.
(1) Install and hold nipple (4). Use open end
wrench.
(2) Torque nut (11) to 345 INCH-POUNDS. Use
crowfoot and torque wrench.
b. Install fitting (6) on fire wall (7).
(1) Position fitting (6) on fire wall (7).
(2) Install and hold three screws (8).
(3) Have one person install three washers (10)
and nuts (9).
c. Install tube (1).
(1) Install nut (3) and nut (5) finger tight on check
valve (2) and nipple (4).
(2) Hold nipple (4). Tighten nut (5). Use open end
wrench and crowfoot.
(3) Hold valve (2). Tighten nut (3). Use open end
wrench and crowfoot.
d. Inspect (QA).
e. Secure access doors T250L, T250R, T290L,
T290R, L325, and LN1 (para 2.2).
END OF TASK
1
3
2
5
4
6
7
10
9
11
8
M04-3682-3
