S 865-100
(3)
Remove the cap from the outlet line on the pressure regulator, then connect the line to pressure regulator outlet.
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S 865-101
WARNING:_______OPEN THE SHUTOFF VALVE ON THE CREW OXYGEN CYLINDER SLOWLY. THE REMAINING OXYGEN CAN RELEASE WITH A LARGE FORCE. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO THE AIRPLANE AND EQUIPMENT.
(4) Open the shutoff valve to each crew oxygen cylinder as follows:
(a) Slowly turn the shutoff valve until it is fully open.
NOTE: But, do not torque the shutoff valve more than 25
____ pound-inches. This is equivalent to a torque which is tighten by your fingers.
(b)
Close the shutoff valve one-fourth of a turn.
(c)
Install a lockwire on the shutoff valve.
NOTE: Use the 0.020 inch diameter copper lockwire
____
(AMM 20-11-28/401).
S 865-116
(5)
Close the access door to the crew oxygen cylinders
S 795-103
(6)
Do a check of the connections on the pressure regulator outlet for leaks with a leak detection compound.
S 035-201
(7)
Rub the leak detection compound off with a clean cotton cloth immediately after the check is done.
(8)
Install the closure assembly in the right coat closet.
(9)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 415-104
S 865-105
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CREW OXYGEN SYSTEM - INSPECTION/CHECK
_____________________________________
1. General
_______
A. These tasks are included in this procedure:
(1)
The Pressure and Leak Check for the crew oxygen cylinder
(2)
The Correct Installation and Condition Check for the crew oxygen cylinder.
B. The crew oxygen cylinder is installed in the forward cargo compartment aft of the cargo door (Fig. 601). Access to the crew oxygen cylinder is through the access door.
NOTE: Some airplanes have an optional second oxygen cylinder.
____
TASK 35-11-00-206-012
2. Crew Oxygen Cylinder Pressure and Leak Check (Fig. 601)
____________________________________________
A. Consumable Materials
(1)
G00091 Compound - Oxygen System Leak Detection (MIL-L-25567)
(2)
G00713 Cloth - Clean, Dry, Lint-free, White, Cotton
B. References
(1)
AMM 35-00-00/201, Oxygen
(2)
IPC 35-11-00
C. Access
(1) Location Zone 124 Forward Cargo Container Compartment, Aft Half Right
D. Procedure
S 916-015
(1)
Read and obey the safety precautions and general instructions for the oxygen system before you do the maintenance (AMM 35-00-00/201).
(2)
Open the access door to the crew oxygen cylinder.
(3)
Do a check of the pressure gage on the crew oxygen cylinder.
S 016-008
S 786-001
NOTE: Make sure the pressure is above the minimum necessary for
____
the dispatch.
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MAINTENANCE MANUAL
SEE A 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 氧气 OXYGEN(26)
