inlet port and the reduced pressure at the outlet port, 4) Outlet port relief valve set at 2400 psi, 5) Outlet port that is vented to ambient pressure when the
valve is closed.
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(f)
A shutoff valve for the oxygen supply with these properties: 1) Slow opening, 2) Heavy-duty type, 3) Metal-to-metal valve seats, 4) Clockwise shutoff.
(g)
A supply hose with these properties:
NOTE:____MS22028 hose assembly meets these specifications. Refer to Military Specification MIL-H-26633. Refer to QPL-26633-8 for a list of the approved vendors.
1) High-pressure capability,
2) Flexible,
3) Teflon-lined for oxygen service,
4) Approximately 50 feet long.
(h) A supply hose adapter that is made of brass
or a corrosion resistant steel.
NOTE: The adapter must connect with the airplane filler port.
____ The airplane filler port end fitting is a cone-type connection with a 0.375-24 UNF-3A thread - Refer to AND10089-3. The adapter must be a 120-degree elbow.
(i)
A protective cover (metal cap and
polyethylene bag) to stop the
contamination of the supply hose adapter.
(j)
A storage capability for the supply hose
and for the adapter end of the hose.
(k)
A static ground cable that is permanently
attached to the equipment.
C. Consumable Materials
(1) G00019 Oxygen - Gaseous
NOTE: Oxygen that agrees with Specification MIL-O-27210, Type I, is
____
recommended.
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(2)
B00036 Freon 113 - Aerosol Spray Can
(3)
G00092 Oxygen System Leak Detection Compound -Sherlock CG Type 1
D. References
(1)
AMM 20-41-00/201, Static Grounding
(2)
AMM 24-22-00/201, Electrical Power - Control
(3)
AMM 35-21-00/201, Passenger Oxygen System
(4)
AMM 35-21-09/401, Oxygen Fill Fitting
E. Access
(1) Location Zones
161/162 Bulk Cargo Compartment
F. Procedure - Service the Passenger Oxygen Cylinders
S 913-056
(1) Before you do the servicing, read and obey the Approved Persons and Precaution Data information that is in the General paragraph.
S 493-057
WARNING: THE AIRPLANE MUST BE ELECTROSTATICALLY GROUNDED AND BONDED
_______ TO THE OXYGEN SERVICING EQUIPMENT TO PREVENT SPARKS. SPARKS CAN CAUSE A FIRE OR AN EXPLOSION.
(2)
Ground the airplane and oxygen servicing equipment
(AMM 20-41-00/201).
S 863-058
(3)
Make sure all the shutoff valves for the oxygen cylinders are held in the open position with a lockwire.
NOTE: Use the 0.020 inch diameter copper lockwire
____
(AMM 20-10-23/401).
S 163-059
(4)
Make sure the area near the oxygen service panel is clean.
(5)
Remove the dust cap from the fill fitting.
S 033-060
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MAINTENANCE MANUAL
S 113-061
(6)
Clean the fill fitting port and cap with solvent, Series 96 (AMM 20-30-96/201, SOPM 20-30-96). If the inside of the port shows signs of contamination, replace the fill fitting (AMM 35-21-09/401).
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