b. The tank can be emptied more quickly by pump.
Two soldiers are
required, one to operate the tank valve and one to operate the pump. One
end of a 4-inch hardwalled hose is connected to the tank filler/discharge
port, and the other end of the hose is connected to the pump.
filler/discharge port valve is opened and the pump is started and idled up.
After the tank is empty, the soldier on the pump idles down and shuts off
the pump. The soldier on the filler/discharge port valve closes the valve
and disconnects the 4-inch hose. As before, these tanks may be rolled up
and left on the trailer to be filled again, or removed if the trailer is to
be used for other purposes.
5. While performing after-operation PMCS, you discover several of the SMFT
tanks have been damaged and must be repaired. The SMFT tank can be repaired
with either sealing clamps or wooden plugs.
a. Several of the damaged tanks have small slits, tears, or cuts (none
exceeding 6 1/2 inches in length).
The size of the damaged tank area
(opening) needing repair determines the size of the clamp needed. You refer
to the TM for the SMFT and find the following criteria as guidance in
selecting the appropriate size clamp:
(1) For holes (tears) up to
2 inches in
(2) For holes (tears) 2 to 4 inches in length, use the 5-inch sealing
(3) For holes (tears) 4 to 6 1/2 inches in length, use the 7 1/2-inch
b. It may be necessary to increase the size of the tear slightly in
order to be able to insert the bottom plate of the sealing clamp. Slip the
bottom plate of the sealing clamp through the hole or tear and rotate it
until it is centered and parallel to the tear. Center the top plate of the
sealing clamp on the threaded shank directly over the bottom plate.
tightening the wing nut, you securely clamp the tank wall between the two
plates. Tighten only enough to stop the leak. Use caution when tightening
the wing nut so as not to strip the threads of the clamp stud or damage the
c. Emergency repairs can also be made with wooden plugs.
emergencies, as an immediate temporary measure, wooden plugs may be used for
expedient sealing of small holes or punctures. Select the size plug needed
to fit (seal) the tank puncture.
Insert the plug in the hole and twist
clockwise until the fit becomes quite snug and the tank leak is either