TM 1-1520-238-23
4-228
4.70.
NO. 1 OR NO. 2 ENGINE ANTI-ICE TUBE REMOVAL/INSTALLATION – continued
b. Remove tube (1) from support (5).
(1) Swing tube (1) and nut (4) away from valve
(2).
(2) Remove tube (1).
4.70.4. Cleaning
a. Clean union and support (para 1.47).
4.70.5. Inspection
a. Check union for damaged threads. None al-
lowed.
b. Check support for cracks. None allowed.
c. Check seal for cuts, breaks, or nicks. None
allowed.
d. Check support for corrosion (para 1.49).
4.70.6. Installation
a. Install tube (1) in support (5).
b. Install tube (1) on valve (2). Torque nut (4) to
415 INCH-POUNDS.
(1) Lubricate threads of fitting (3). Use
petrolatum (item 138, App F)
(2) Install nut (4) on fitting (3).
(3) Hold fitting (3). Use open end wrench.
(4) Torque nut (4) to 415 INCH-POUNDS. Use
torque wrench and crowfoot.
c. Inspect (QA).
d. Install No. 1 or No. 2 engine anti-ice thermo-
static switch (para 4.69).
END OF TASK
M04-2583-3
5
1
M04-2583-4
2
1
3
4
