TM 55-1520-240-23-8
10-119
TEST PRESSURE REFUELING SYSTEM FOR LEAKS
(Continued)
10-119
14.
Make sure shutoff valve (23) is closed and vent
valve (24) is closed. Hold fitting (25) with wrench
and disconnect hose (26). Connect test setup
to hose.
15.
Open supply valve (23.1) and regulate pressure
to 120 psi. Open valve (23) and allow pressure
to stabilize at 120 psi on gage (27). Close valve
(23).
16.
Wait 5 minutes. Check that gage (27) indicates
120 psi. If gage reads 120 psi, go to step 19. If
gage reads less than 120 psi, go to step 17.
17.
Check for leaks as follows:
a.
If any leak is found in steps 17b thru 17h
replace packings or parts and repeat steps
15 and 16.
b.
Check test setup connections upstream and
downstream of valves (23 and 24), and gage
(27). Use mixture of soap (E353) and water,
and brush (E85). Allow system to remain
under pressure for 15 minutes. If bubbles
grow in size, connection is leaking. Tighten
leaking connections or replace packings as
needed. Also check all joints, seams, and
cast components.
c.
Check at filler adapter (28). Use soap and
water mixture as in step 17b.
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