TM 1-1520-238-23
7-586
7.155.
ENVIRONMENTAL CONTROL UNIT AFT AIR TUBE REMOVAL/INSTALLATION – continued
7.155.3. Removal
a. Remove tube (1) from ENCU (2).
(1) Remove nut (3) and coupling (4). Use socket.
(2) Remove and discard packings (5) and (6).
7.155.4. Cleaning
a. Wipe removed and attaching parts with a
clean rag.
7.155.5. Inspection
a. Check tube for cracks, dents, and scratches
(para 7.114).
b. Check removed and attaching parts for corro-
sion (para 1.49).
7.155.6. Installation
a. Lubricate new packings (5) and (6). Use
petrolatum (item 138, App F).
b. Install packings (5) and (6) on tube (1).
c. Install tube (1) on ENCU (2).
(1) Install coupling (4). Aline tube (1).
(2) Install ECS shutoff valve (para 13.15).
(3) Install nut (3). Use socket.
d. Inspect (QA).
e. Perform pressurized air system leak check
(para 7.115).
f. Secure access doors T250L, T250R, T290L,
T290R, and L325 (para 2.2).
END OF TASK
ROTATED
6
1
5
4
2
3
M04-2596-2
