TM 55-1520-240-23-8
10-22
TEST MAIN FUEL TANK AFTER INSTALLATION
(Continued)
10-22
11.
Hold fitting (12) with wrench and disconnect
hose (13). Remove conical seal (12.1) from hose
fitting (12.2).
TEST SETUP B
12.
Connect test setup B to fitting (12).
Do not allow pressure to exceed 5.0
psi. Damage to helicopter will occur.
13.
Open valve (3) and allow pressure to stabilize
at 2 to 4 psi. Close valve. Record gage (14)
indications.
14.
Wait 15 minutes. Check gage. If there is no
change in pressure, go to step 21. If pressure
has dropped, go to step 16.
CHECK FOR LEAKS
15.
Check for leaks as follows:
a.
Check test setup connections upstream and
downstream of drain valve (3), shutoff valve
(4), and gage (14). Use mixture of soap
(E353) and water, and brush (E85). Tighten
connections or replace packings as needed.
Repeat steps 13 and 14.
10-94
