NOTE
For normal use of the compressor
package assembly, including low
temperature operation, use only
aircraft instrument lubricating oil
(Specification MIL-L-6085A).
If the compressor is to be used for compressing
breathing quality air, use only special medicinal grade,
mineral base lubricating oil supplied by Stewart-Warner
as part numbers 130A1190 (one pint), 130A0657 (one
quart), and 130A0656 (one gallon).
2.3.2 ENGINE LUBRICATION
Figure 2-2. Instrument Panel
2.5 OPERATING PRECAUTIONS
2.3.2.1 Use the dipstick to check the oil level in the
engine crankcase. Add oil (Specification MIL-L-2104)
2.5.1 The following precautions must be rigidly
as necessary to bring the level up to the FULL mark on
observed at all times when operating the compressor
the dipstick. Do not overfill.
package assembly.
2.5.2 Operate the compressor package assembly only
in well-ventilated areas or with the engine exhaust gases
vented outdoors. Engine exhaust gas contains lethal
carbon monoxide which is colorless and odorless.
When inhaled, carbon monoxide will cause serious, and
sometimes fatal, illness. If the exhaust gases enter the
2.3.3 ENGINE FUEL
compressor intake, the air storage bottles being charged
will be contaminated and the air unfit for breathing.
2.3.3.1 Fill the fuel tank with standard, automotive
grade gasoline (Federal Specification W-M-561), and
2.5.3 High-pressure air can cause serious injury to
screw the filler cap down tight. Be sure the gasoline
operating personnel.
Always make certain the
used is clean and fresh. Do not mix oil with the
connecting tube assemblies, hoses and other
gasoline.
component parts of the compressor package assembly
are in good condition. In particular, never use an air
hose assembly or filler attachments that are damaged or
2.4 PNEUMATIC CONNECTIONS
appear in questionable condition.
2.4.1 Open the front, left-hand access door (see Figure
2.5.4 Never charge an air storage bottle or other
pneumatic equipment with compressed air if the proof
the hose reel For low-pressure charging (up to 200 psig),
pressure or rating of the equipment is unknown. Never
connect the air hose half-coupling to the low pressure
charge equipment to a pressure in excess of its known
outlet fitting on the instrument panel (see Figure 2-2).
rating.
For charging pressures above 200 psig, connect the
half-coupling to the high-pressure outlet fitting. Close
2.5.5 Severe explosion will result if a container partially
the pressure servicing valve at the opposite end of the
filled with oxygen is charged with air. If any doubt exists
air hose before connecting the chuck assembly to the
as the contents of a container, thoroughly vent the
inlet valve of the device to be charged. Be sure all
container and flush with water or air at zero pressure
connections are tight and there are no kinks or sharp
before charging.
bends in the air hose.
2.5.6
The pressure relief valve assemblies are
preadjusted to open and relieve system air pressure
2.4.2 If required, slip one end of an inlet hose on the
when the pressure exceeds a safe value. Operating
connector port of the compressor first stage silencer
personnel should never attempt to change the setting of
cover. Place the opposite end of the inlet hose in
the pressure relief valve assemblies.
allocation such that engine exhaust gases, obnoxious or
toxic fumes, dust, dirt, and excessively humid air will not
2.5.7 When compressing breathing quality air, use only
be drawn into the compressor first stage cylinder. Make
special medicinal grade, mineral base lubricating oil for
sure there are no sharp bends or kinks in the inlet hose,
compressor lubrication (refer to paragraph 3.3.1.1).
and that the inlet end is unobstructed.
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