Uses
To grease fittings, pull out the length of hose you
need, wipe the fitting clean, and push the coupler of the
control valve onto the fitting. Squeeze the valve lever.
When grease is forced out, release the lever and twist
the coupler to one side to remove it. Do not try to pull
it straight off. After servicing is complete, wipe the
control valve coupler clean, rewind the hose, and put the
control valve into its holder.
NOTE: When greasing, follow the manufacturer’s
lubrication chart to ensure all grease fittings are greased
at the proper intervals.
NOTE: Be careful not to overgrease, as
overgreasing can cause damage to seals and packings.
NOTE: Wipe up any excessive grease that can fall
onto the deck of the equipment or onto components that
do not require greasing.
In dispensing motor or gear oil, pull out the
necessary length of hose, clean all dirt off the fill hole
plug and surrounding area, and then remove the plug.
Check to see that the meter is on zero, insert the control
valve nozzle into the fill hole, and squeeze the valve
lever. After the required quantity of motor or gear oil
has been dispensed, release the lever. Reinstall the plug
you removed earlier. Clean the control valve nozzle,
reset the meter to zero, turn counterclockwise, and store
the hose and valve.
For gauging and inflating tires, an air gauge with
two sizes of air chucks is in the storage cabinet. The
gauge has a pin fitting that snaps into the air hose
coupler. When inflating tires, release the gauge lever to
check the pressure of the tire; depress to inflate the tire.
Safety
l Always have a firm metal-to-metal contact when
filling the fuel tank.
l Never stand directly in front of a tire when it is
being inflated. Stand to one side.
l Always pipe the exhaust fumes to the outside
when operating the lubricator in an enclosed area.
. Never fill the fuel tank while the engine is
running.
. Never direct a jet of compressed air at yourself
or anyone else.
l Always stop all operations of a unit before
servicing it.
l Always use Navy-approved solvents for
cleaning.
l Always relieve all pressures before servicing any
component of the lubricator.
. Always check the engine and the compressor
crankcase oil level at the start of each workday.
. Always review the Material Safety Data Sheet
(MSDS) for every hazardous material, fuel, lubricant,
and solvent before use for precautions and hazards.
. Always dispose of greases, oils, and contami-
nated materials in an environmentally responsible
manner.
PUMPS
A pump uses the mechanical energy produced by its
prime mover to move liquid from one point to another.
The pump moves the liquid by either pushing, pulling,
or throwing. Pumps are often named or classified by the
action that causes fluid movement; for example,
diaphragm or centrifugal.
Regardless of its design or classification, each pump
has a power end and a liquid end. The power end is
some form of prime mover, such as an electric motor,
internal combustion engine, or steam turbine. In
steam-driven pumps, the power end is often referred to
as the steam end. The basic purpose of the power end
is to develop the mechanical motion or force required
by the liquid end.
In the liquid end, mechanical motion, developed by
the prime mover, is exerted on the liquid. This part of
the pump must allow for suction (where the liquid enters
the pump) and for discharge (where the liquid leaves the
pump). The liquid end is often referred to as the pump
end, the water end, or the oil end to show the nature of
the substance pumped.
Diaphragm Pump
The diaphragm pump (fig. 14-33) uses a flexible
diaphragm to move liquid. The prime mover is
usually a small gasoline engine with an eccentric
connecting rod arrangement that converts rotary
motion to reciprocating motion. On the suction stroke,
the diaphragm is drawn upward into a concave
configuration. This movement of the diaphragm results
in a partial vacuum that causes the suction ball valve to
14-28
