S 033-087
(7)
Remove the cap. S 423-024
(8)
Put the fully serviced cylinder in its mounting position. NOTE: Make sure that the high pressure outlet aligns with
____ the high pressure line connection.
S 433-025 WARNING: DO NOT USE LUBRICANT, OIL OR GASKETS ON THESE CONNECTIONS.
_______ WHEN CONTAMINATION IS OPEN TO OXYGEN, A FIRE OR EXPLOSION CAN OCCUR. INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(9)
Connect the high pressure oxygen line. S 433-026
(10)
Tighten the T-bolt nut to the applicable torque value (AMM 20-50-11/201).
NOTE: Make sure the T-bolt holds the oxygen cylinder tightly to
____ prevent all unwanted movements.
(a) Make sure the threads of the T-bolt extends through the nut with at least the chamfer visible.
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737-300/400/500MAINTENANCE MANUAL
S 433-027
(11)
Connect the overboard discharge line and make sure the connection is tight.
S 423-028
(12)
Put the cylinder assembly in its position.
S 433-077
(13)
Attach the cylinder assembly with a clamp.
S 863-029
(14)
To open the shutoff valves on the oxygen cylinders, do the steps that follow:
(a)
Open the shutoff valve on the crew oxygen cylinder slowly and fully.
(b)
Do not tighten the valve more than 25 inch-pounds (Hand tighten).
(c)
Close the valve one-fourth of a turn.
(d)
When you put the system back to its initial condition, you must use lockwire to keep the valve in this position.
WARNING:_______ YOU MUST OPEN THE VALVES SLOWLY OR HIGH TEMPERATURES CAN
OCCUR. AS A RESULT OF HIGH OXYGEN TEMPERATURES, A FIRE OR
EXPLOSION CAN OCCUR, AND THIS CAN CAUSE INJURY TO PERSONS AND
CAUSE DAMAGE TO THE EQUIPMENT.
CAUTION:_______ YOU MUST NOT TIGHTEN THE VALVE MORE THAN THE GIVEN TORQUE.
DAMAGE TO THE VALVE CAN OCCUR.
NOTE: Use the 0.020 inch diameter copper lockwire (AMM
____ 20-10-44/401).
S 793-030
(15) Do a leakage check of the cylinder connections with the leak detection compound refer to AMM 20-30-51/201.
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737-300/400/500MAINTENANCE MANUAL
S 163-031
(16)
Rub the leak test solution off with a lint free cloth immediately after the leak test.
S 863-032
(17)
Make sure that the system pressure is in the necessary range.
S 553-033
(18)
If oxygen cylinders have pressure caps attached to the cylinders by chains, use lockwire to decrease the caps movement.
I. Put the Airplane Back to Its Usual Condition
S 413-034
(1) Close the access to the oxygen cylinder.
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