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TM 10-4930-250-13&P
(5) Connectdischargehose(10)to auxiliarypump(20)andopenunisexcouplingvalves.
(6)Connect auxiliary power cable to auxiliary pump (20).
(7)Open liquid fuel filter-separator (14) manual vent valve.
(9)Turn on auxiliary pump (20) to pump down liquid fuel filter-separator (14) and 3 in. x 6 ft discharge hose (21)
from fuel transfer pump (1).
(9)Close liquid fuel filter-separator (14) inlet valve and manual vent valve when air is seen in the sight gauge.
(10)
Turn off auxiliary pump (20), and close auxiliary pump unisex inlet and outlet valves.
(11)
Disconnect discharge hose (10) from auxiliary pump (20) and connect to recirculation manifold full flow
unisex coupling (11).
(12)
Disconnect suction hose (17) from auxiliary pump (20) and liquid fuel filter-separator (14).
e.
Defuel system fuel hoses. (Refer to figure 2-26.)
NOTE
Auxiliary pump (1) must be supported in the following steps.
(1) Select a fuel drum (2) to defuel into.
(2)At selected fuel drum (2), close inlet elbow valve (3) and unisex coupling valve on discharge hose (4),
disconnect discharge hose (4) from inlet elbow valve (3), connect the discharge hose (4) to the flow side (5) of
auxiliary pump (1), and open unisex coupling valves on flow side (5) of auxiliary pump and discharge hose (4).
(3)Connect auxiliary pump (1) unisex coupling to inlet elbow valve (3) unisex coupling, and open unisex coupling
valve and inlet elbow valve (3).
(4)Close the fuel drum inlet elbow valve couplings (6) on the remaining drums (7).
The AAFARS suction and recirculation hoses are connected to the fuel drums via elbow
valves with integral camlock couplers. When the elbow valve coupling is closed, the valve
stem is extended; when open, it is retracted. The stem travel is opposite that of
conventional valves and requires the operator to double check valve position during system
set up and tear down, since observation can be misleading. Failure to heed this warning
could result in death or serious injury.
(5) Turn on auxiliary pump (1).
(6)One at a time, open unisex valves (8) on discharge hoses at fueling points. Close unisex valve (8) as hose
collapses.
(7)One at a time, disconnect the inlet elbow valve camlock coupler (6) from the other three fuel drums hoses (9),
allow the hose to pump down, and close unisex valve (10).
(8)When hoses are collapsed/defueled, close inlet elbow valve (3) on last fuel drum (2).
2-35
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