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TM 9-2350-285-20
Section III. PRINCIPLES OF OPERATION
1-14. EQUIPMENT OPERATION.
The purpose of the M969A2 5000-gallon tank semitrailer is to provide the means for automotive refueling or bulk fuel
hauling and delivery. The semitrailer can be loaded through the top or bottom fill opening. Bottom loading is the preferred
method.
PUMP AND ENGINE ASSEMBLY
ENGINE: Provides power to the centrifugal pump (2) through a flexible coupling. The diesel engine (1) is a four-cylinder,
four-cycle, valve-in-head, air-cooled engine with a maximum rating of 27.5 horsepower, located on the curb side of the
semitrailer. The engine (1) is operated and monitored at the control panel (3) located on the road side of the semitrailer.
PUMP: The M969A2 semitrailer is equipped with a four-
inch, self-priming, low-head, low-pressure centrifugal
pump (2). The centrifugal pump (2) provides a flow rate
for metered fuel (gasoline or diesel) delivery of up to 60
gpm through one or both fuel-dispensing nozzles.
1-11
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