TM 5-4310-227-15
b. Models BMW-452-EVG and BMW-452-
(4) Close the fuel shutoff valve (3, fig.
ENG-1 .
(5) Perform the applicable daily services
(1) Perform the appropriate procedures
in a above.
b. Models BMW-452-ENG and BMW-
(2) Pull the choke lever (3, fig. 2-2).
(3) Press the starter button (4, fig. 2-2).
452-ENG-1 .
(4) Push the choke lever (3, fig. 2-2).
(1) Perform the appropriate procedures
in a above.
(2) Push the stop button (2, fig. 2-2).
2-27. Stopping
a. Models
OEG-458-ENG-1,
OEG-458-
ENG-2, and OEG-458-ENG-3.
(1) Close the globe valve (5, fig. 2-3).
Except for starting and stopping the engine,
(2) P r e s s and hold the ground switch
this unit is fully automatic. The air compressor
will continue to operate as long as the fuel
pushbutton (17, fig. 2-7) until the
engine stops.
supply lasts or until it is stopped manually.
(3) Open the air receiver tank draincock
When air pressure reaches 175 psi, the unload-
er valve opens. The unloader valve remains
and allow the accumulated air and
open and releases air until the pressure in the
m o i s t u r e to drain from the tank.
air receiver tank falls below 175 psi.
Close the draincock.
Section V. OPERATION UNDER UNUSUAL CONDITIONS
(3) Fill the fuel tank frequently to keep
2 - 2 9 . General
it full when operating the unit in cold
Operation of the air compressor under un-
weather. This helps to prevent mois-
usual conditions presents problems that de-
ture from forming in the tank.
mand special precautions and extreme care in
b. Lubrication. Lubricate the unit in accord-
servicing the air compressor. This section will
ance with the cold weather instructions con-
list the conditions and furnish instructions for
tained in the current lubrication order.
operating the unit at the highest performance
c. Airhose. At low temperatures, the airhose
level.
will become brittle. Avoid excessive handling
and kinking.
a. Fuel System. In cold weather, condensa-
whenever possible. The immediate area should
tion will cause the formation of ice crystals
be heated in extreme cold since condensation
which will accumulate in partially filled tanks,
will cause water to accumulate around the comp-
drums, and other fuel containers. These crys-
pressor valves, which will freeze, locking and
tals will clog fuel lines and carburetor jets un-
damaging the valves. When operated outdoors,
less the following precautions are taken:
locate the unit behind a windbreak and cover
(1) Remove snow and ice from the fuel
the compressor with a tarpaulin when not in
tank filler cap and dispensing equip-
use.
ment before filling the tank.
Models
e. Starting,
OEG-458-ENG-1,
(2) Use filter paper, chamois, or any com-
O E G - 4 5 8 - E N G - 2 , and OEG-458-ENG-3.
parable strainer when filling the fuel
(1) Before attempting to start the engine
tank or when transferring fuel from
in extreme cold, be sure that the con-
one container to another.
s i s t e n c y of the oils in the engine and
Warning: Provide a metal-to-metal
compressor crankcases is thin enough
contact between the fuel tank and
to furnish proper lubrication.
fuel container to avoid the possibility
(2) Close the choke lever (31, fig. 2-7)
of a static spark igniting the fuel.
and turn the engine over until the
