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 A.  The oxygen cylinder assembly consists of either a steel or composite oxygen cylinder, a safety relief valve, a pressure indicator, and a shutoff valve.
 B.  Crew oxygen is located in the right sidewall of the forward cargo compartment, aft of the cargo door. The cylinder compartment is accessed through a panel found in the aft cargo door well.
 C.  Oxygen cylinders, when fully serviced (1850 psig at 29.92 inches Hg, and
 70°F), have the capacity of 114 cubic feet of gaseous oxygen.Cylinder Coupling Assembly (Fig. 3)
__________________________
 A.  The cylinder coupling assembly is installed on the outlet fitting of oxygen cylinder assembly. It provides mounting connections for the pressure transducer, pressure reducer, and the thermal compensator.
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CYLINDER CREW OXYGEN (2 LOCATIONS)  SEE  A  BSEE REGULATOR PRESSURE 
INDICATOR DISCHARGE OVERBOARD  MANIFOLD OXYGEN CREW 
LINE PRESSURE MEDIUM  BOX (4 LOCATIONS) MASK STOWAGE 
REGULATOR RELIEF VALVE  A FLIGHT COMPARTMENT 

OUTLET
INLET FROM

TO MASKS
PRESSURE
REDUCER
PRESSURE REGULATOR
B
Crew Oxygen - Component Location Figure 1
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AIRPLANE
SEE A SKIN
GREEN INDICATOR DISC
SNAP RING
INBD DISCHARGE PORT
OVERBOARD DISCHARGE INDICATOR B
OVERBOARD DISCHARGE PORT AND INDICATOR
MEDIUM OXYGEN
PRESSURE CYLINDER
LINE
(EXAMPLE)

OVERBOARD DISCHARGE LINE
SHUTOFF PRESSUREVALVE TRANSDUCER
(EXAMPLE)
PRESSURE
REDUCER
(EXAMPLE)

FWD
ACCESS DOOR

COUPLING ASSEMBLY
SHUTOFF VALVE
A
Crew Oxygen Cylinder Assembly Figure 2
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PRESSURE REDUCER (REF)

SEE

COUPLING ASSEMBLY WITH AN
INTEGRAL THERMAL COMPENSATOR

Cylinder Coupling Assembly
Figure 3

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MASK/REGULATOR
ASSEMBLY

FLOW SEE A
BLINKER
FLOW BLINKER
OXYGEN MASK
SHUTOFF
VALVE
SLIDING
CONTROL
SLIDING
CONTROL
DILUTER MASK
DEMAND REGULATOR
MASK IN BOX (LIDS CLOSED)  MASK IN BOX (LIDS OPEN)
DILUTION CONTROL
OXYGEN
DILUTION
CONTROL HARNESS
PNEUMATIC
INFLATION EARS HARNESS
(2 LOCATIONS)
NORMAL POSITION
DILUTER DEMAND REGULATOR
PRESS-SEE B
TO-TEST
KNOB
MASK/REGULATOR ASSEMBLY DILUTER DEMAND REGULATOR (SHOWN INFLATED)
B A
Mask/Regulator Assembly
Figure 4

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