TM 10-4930-351-14
0007 00
WARNING
Do not attempt defueling of more than one inlet hose at a time. Fuel spillage could occur and pose a
hazard to personnel and the environment.
CAUTION
System components are subject to damage from thermal expansion. To prevent damage to
equipment, ensure all components are completely defueled prior to transportation or storage.
1.
With the fuel transfer pump (1) running:
a.
Close all fuel drum (2) outlet elbow valve couplings (3).
b.
Close all unisex couplings (4) at fuel drum end of suction hoses (5).
c.
Beginning at fuel drums (2), disconnect suction hoses (5) one at a time, open unisex coupling (4), hold hose end
higher than intake manifold and close unisex coupling (6) at far end (intake manifold) of suction leg. Close unisex
coupling (4) at free end of leg and install dust cap.
d.
Repeat step (c) for each of the three remaining suction legs.
CAUTION
Do not run the fuel transfer pump dry. Running dry for more than 15 minutes may cause damage to
the pump.
e.
Close emergency shutoff valve (7) as soon as fuel transfer pump (1) unloads.
2.
At the accessory module control panel (8), position ENGINE SWITCH to STOP position.
CAUTION
Never subject nozzles to auxiliary pump suction. Seals will rupture.
Drain nozzle immediately after disconnecting it from system. Trapped fuel can
cause large internal pressure that can damage the nozzle when the temperature
rises.
3.
Close discharge unisex coupling valves (12), and disconnect and drain all nozzles (13).
4.
Defuel liquid fuel filter-separator (14).
a.
Close unisex coupling (15) on liquid fuel filter-separator (14) outlet valve.
b.
Disconnect discharge hose (10) from recirculation manifold (16).
c.
Disconnect one of the suction hoses (5) from fuel transfer pump (1) inlet for use in next step.
0007 00-29
