(3)  
Pressure gage - 0 - 250 psi

 (4)  
Adequate tubing and fittings

 C.  References
 (1)  
AMM 35-00-00/201, Oxygen

 (2)  
AMM 35-12-11/401, Pressure Reducing Regulator

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A
737-300/400/500MAINTENANCE MANUAL
 D. Access
 (1)  Location Zone
 113 Forward Cargo Compartment, Right

 E. Thermal Compensator Test
 S 785-002
 (1)  Do a check on the flow and pressure drop through the thermal compensator.
 NOTE: Thermal compensators that are satisfactory will permit a
____ flow of air at 1000 liters per minute. For and inlet pressure of 2000 psi, a satisfactory thermal compensator will permit a pressure drop of less than 200 psi.
 S 965-003
 (2)  If the pressure drop is more than 200 psi, replace the cylinder coupling assembly (AMM 35-12-11/401).
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737-300/400/500MAINTENANCE MANUAL
 THERMAL COMPENSATOR - CLEANING/PAINTING
_______________________________________
 1.  General_______
 A.  The thermal compensator is an integral part of the cylinder coupling assembly.
 TASK 35-12-61-107-004
 2.  Clean the Thermal Compensator Assembly______________________________________
 A.  General
 (1)  Read the safety precautions and the general maintenance instructions of the oxygen system in AMM 35-00-00/201, Oxygen.
 B.  Standard Tools and Equipment
 (1)  Portable test cylinder - filled with air or nitrogen at 2000 |100 psi.
 NOTE: Use nitrogen per MIL-P-27041; or air with no particles or
____ fibers greater than 100 microns in the longest dimension per cubic foot of air, no more than 3 PPM total carbon by weight or 7 PPM total CH4 by volume, and with moisture content not exceeding 0.00002 grams per liter of air at 70°F and 760 MM mercury (equivalent to a dew point of -63.6°F at 760 MM mercury).
 C.  References
 (1)  
AMM 35-00-00/201, Oxygen

 (2)  
AMM 35-12-61/501, Thermal Compensator

 D.  Access
 (1)  Location Zone
 113 Forward Cargo Compartment, Right

 E.  Procedure
 S 137-001
 CAUTION: DO NOT DISCONNECT THE THERMAL COMPENSATOR (WIRE BRUSH) FROM THE
_______ ASSEMBLY. REPLACE THE ASSEMBLY IF THE THERMAL COMPENSATOR AND THE UNION HAVE BEEN MOVED LONGITUDINALLY OR CAN BE TURNED BY HAND.
 (1)  
Use the ultrasonic cleaning or vapor degreasing process to clean the thermal compensator.

 (2)
Flush and dry the thermal compensator with nitrogen or air.

 (3)  
Do a test on the thermal compensator (AMM 35-12-61/501).

 S 177-003
 S 787-002
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737-300/400/500MAINTENANCE MANUAL
 CREW OXYGEN MASK - MAINTENANCE PRACTICES
________________________________________
 1.  General_______
 A.  This procedure gives the maintenance practices for stowage of crew oxygen masks. Correct stowage is necessary for fast and satisfactory mask donning. Only approved persons are permitted to do the stowage procedure.
 TASK 35-12-85-402-021
 2.  Stow Crew Oxygen Mask (Fig. 201)_____________________
 A.  References
 (1)  35-12-00/501, Flight Crew Oxygen System
　
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