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TM 5-6115-630-14&P
Underground water system. Ground power unit to one of the accessible pipes in an underground water
system. Make certain underground pipe is made of metal and there is no insulation, such as a water
meter, between ground wire and earth.
Ground rod. Drive ground rod a minimum of eight feet into earth. A ground rod must have a minimum
diameter of 5/8-inch, if solid, or 3/4-inch if pipe.
NOTE
It may be necessary to saturate the area around ground rod with water if soil conditions
are dry.
Ground plate. Ground power unit to a metal plate buried four feet deep. Ground plate should cover a
minimum area of nine square feet.
c.
External Fuel L ine Connection. (See figure 4-4.) The power unit generator set can be fueled from an
external source such as a five-gallon fuel can or 55 gallon drum. This eliminates the need for frequent refilling of
the generator’s fuel tank during long intervals of operation.
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Remove fuel can adapter and fuel pickup tube from storage locations on generator set and assemble by
threading pickup tube into adapter.
Thread one end of auxiliary fuel line onto fuel can adapter fitting and tighten.
Connect free end of auxiliary fuel line to AUXILIARY FUEL CONNECTION. This connection is located
immediately below control cubicle on right-hand side of generator set.
Insert fuel can adapter in external fuel source and secure by pressing down on lever.
Set MASTER SWITCH on control panel to PRIME AND RUN AUX FUEL POSITION.
NOTE
When generator set is run on auxiliary fuel, as described above, fuel is first pumped into
generator set fuel tank by auxiliary fuel pump. Fuel is then fed to generator set engine
from fuel tank.
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