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TM 10-4320-256-14&P
(3)
(4)
Capacities.
Rated Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . 100 gallons/minute (378.5 liters/minute)
Total head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 feet (30.5 meters)
Priming capacity pump . . . . . . . . . . . . . . . . . . .. 2 gallons(7.57 liters)
Operating pressures.
Normal operating pressure . . . . . . . . . . . . . . . ..35psi atfullflow
Maximum operating pressure . . . . . . . . . . . . . ..45psi
1-9. Safety, Care and Handling. The following paragraph ssummarize the safety, care and handling
requirements for the pump assembly.
a. Safety It is imperative that you observe all safety precautions specified on the warning page in the front of
this manual. You must also observe specific warnings and cautions specified throughout this manual. The
warnings are provided to tell you how to protect yourself from death or serious injury.
b.
Care and Handling Observe the following precautions:
(1)
(2)
Use care in handling components of the pump assembly as metal parts could cause personal injury.
Use every effort to protect the pump assembly from the weather elements, dust, dirt, oil, grease, and
Section Ill.
Paragraph
1-10
Operating Principles . . . . . . .
PRINCIPLES OF OPERATION
Page
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-5
1-10. Operating Principles. The output shaft of the gasoline engine is coupled directly to the impeller of the
pump. When the engine is operating, it causes the impeller to rotate. If the pump housing contains fluid, the
centrifugal action of the rotating impeller vanes forces the fluid under pressure to exit the pump housing through
the discharge ports and to be directed to another location through a discharge hose. The fluid leaving the pump
under pressure causes a partial vacuum (suction) to be formed at the suction port. If a non-collapsible (rigid-wall)
fluid supply hose is connected to the suction port, fluid will be drawn into the pump housing, into the rotating
impeller, and forced out of the discharge port under pressure in a continuous flow so long as the impeller is
rotating and the supply hose is providing a fresh supply of fluid.
1-5/(1-6 blank)
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