ENGINE LUBRICATION

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

1-3) and remove the air hose and chuck assembly from

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.