S 912-004

 (3)  
Keep the oxygen away from all sources of ignition (hot exhaust, sparks, flame, smoking).

 S 912-005

 (4)  
Keep the oxygen away from flammable material (fuel, paint, thinners, and cleaning solvents).

 S 912-006

 (5)  
Make sure your hands, clothing, equipment, and tools are clean and free of petroleum materials.

 S 912-007

 (6)  
Put on clean, white cotton gloves that are lint-free during oxygen system maintenance.

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737-300/400/500MAINTENANCE MANUAL
 (7)  S 912-008Use the approved leak detection compounds to do the test.
 (8)  S 162-009Immediately after the test, rub off the leak detection compound with a clean cotton cloth.
 (9)  S 912-010Make sure there is a sufficient flow of air through the area when you do maintenance on the oxygen system.
 S 092-011

 WARNING: DO NOT USE LUBRICANT OR GASKETS, UNLESS SPECIFICALLY IDENTIFIED
_______ IN THESE PROCEDURES, WHEN YOU CONNECT THE FITTINGS IN THE CREW OXYGEN SYSTEM. THE LUBRICANT OR GASKETS CAN CAUSE A FIRE OR EXPLOSION WHEN THEY ARE NEAR PRESSURIZED OXYGEN.
 (10)
 When you install a component in the oxygen system, make sure you remove all protective caps.

 S 212-012

 (11)
 Make sure the fittings are clean and free of contamination, thread particles and unwanted particles.

 S 822-013

 (12)
 Do not align the components with the B-nut.

 NOTE: If the components are aligned with the B-nut, a leak can
____ occur and cause a fire and an explosion.
 S 032-014
 (13) Do not tighten the fittings with the oxygen system pressurized.
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 S 862-015
 WARNING:_______OPEN THE SHUTOFF VALVE ON THE OXYGEN CYLINDERS SLOWLY. IF YOU DO NOT OPEN THE SHUTOFF VALVE SLOWLY, HIGH TEMPERATURES CAN OCCUR. HIGH TEMPERATURES CAN CAUSE A FIRE OR EXPLOSION OF THE OXYGEN.
 (14) To open all the oxygen valves slowly, do these steps:
 NOTE:____This will prevent a sudden increase in pressure. This will decrease the possibility of a fire because of an increase in temperature. Make sure that the valves are also opened fully.
 (a)  
Supply electrical power (Ref 24-22-00/201).

 (b)  
Make sure this circuit breaker is closed:

 1)  P18 Panel
 a) OXYGEN SYSTEM IND

 CAUTION:_______DO NOT USE MORE THAN 25 POUND-INCHES OF TORQUE. IF YOU USE MORE TORQUE, DAMAGE TO THE VALVE COULD OCCUR.
 (c)  Slowly open the oxygen cylinder valve to the fully open position with your hand.
 NOTE: Do not use more than 25 pound-inches of torque
____
 (finger-tight).

 (d)  
Close the valve one quarter of a turn.

 (e)  
Install a lockwire on the valve.

 (f)  
Immediately do a check to make sure the crew system pressure indicator on the aft overhead panel shows approximately the same value as the oxygen cylinder pressure gage.

 S 862-016
 (15) When you close the oxygen cylinder shutoff valves, also obey this precaution:
 CAUTION:_______DO NOT USE MORE THAN 25 POUND-INCHES OF TORQUE. IF YOU USE MORE TORQUE, DAMAGE TO THE VALVE CAN OCCUR.
 (a)  Close the oxygen cylinder valve slowly with your hand (finger-tight).
 NOTE: The maximum torque is 25 pound-inches.
____
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