TM 5-3805-280-10
Every six months the drain plugs should be removed
In the event the element is contaminated with dry
from the tanks so that any sediment or accumulated
dirt, oil or greasy dirt deposits, and a new element
condensate may be drained. When replacing the
is not available, cleaning can be accomplished
drain plugs, make sure they are tightened securely.
by washing, using the air cleaner element
manufacturer's recommendations.
BATTERY
NOTICE
Electrical power to this unit is supplied from
externally mounted batteries.
To prevent damage to the element, never exceed
a maximum air pressure of 100 psi (700 kPa).
Keep the battery posts-to-cable connections clean,
tight and lightly coated with a grease. Also the
electrolyte level in each cell should cover the top of
the plates. If necessary, top-up with clean distilled
NOTICE
water.
It is highly recommended that new replacement
elements be installed in the unit immediately in
AUTOMATIC SHUTDOWN SYSTEM
order that the unit be returned to service in the
The high discharge air temperature switches will
shortest possible time. In this manner, the
require approximately 248F (120C) to actuate. The
elements just removed for cleaning can be
engine coolant temperature switch will require
washed and stored as future replacement
approximately 220 F (104 C) to actuate. Replace
elements.
any defective switch before continuing to operate
the unit.
In addition, the air cleaner system (housing and
piping) should be inspected every month for any
A low oil pressure switch may be tested by removing
leakage paths or inlet obstructions. Make sure the
it and connecting it to a source of controlled
air cleaner mounting bolts and clamps are tight.
pressure while monitoring an ohmmeter connected
Check the air cleaner housing for dents or damage
to the switch terminals. As pressure is applied
which could lead to a leak. Inspect the air transfer
slowly from the controlled source, the switch should
tubing from the air cleaner to the compressor and
close at 12 psi (.84 kgf per cm2) and show
the engine for holes. Make sure that all clamps and
continuity through the contacts. As the pressure is
flange joints are tight.
slowly decreased to 8 psi (0.56 kgf per cm2) the
contacts should open and the ohmmeter should
GAUGES
show lack of continuity (infinite ohms) through the
The instruments or gauges are essential for safety,
contacts. Replace a defective switch before
maximum productivity and long service life of the
continuing to operate the unit.
machine.
Inspect the gauges and test any
diagnostic lamps prior to start-up. During operation
observe the gauges and any lamps for proper
functioning. Refer to Operating Controls, for the
normal readings.
FUEL TANK
This unit is supplied with diesel fuel from an
external, customer supplied fuel tank. Using clean
fuel in the fuel tanks is vitally important and every
precaution should be taken to ensure that only clean
fuel is either poured or pumped into the tank. When
filling the fuel tank on this unit, by methods other
than a pump and hose, use a CLEAN non-metallic
funnel.
18-3
