L87123
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 ALL  ú ú 03 Page 405 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
LAVATORY
SERVICE UNIT (LSU)

SEE C

OXYGEN MASKS
LAVATORY B THRU T
(EXAMPLE)

OXYGEN GENERATOR
SEE D
MASK TUBING RELEASE MASK BOX
CABLE
GENERATOR OUTLET
LAVATORY SERVICE UNIT
ATTACHMENT SCREW (2 LOCATIONS)
C
FIRING PIN MECHANISM
RELEASE PIN
FIRING PIN
RELEASE CABLE
OXYGEN GENERATOR
D
Lavatory Service Unit Oxygen Generator Installation
Figure 403 (Sheet 2)

L87097
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 D. Remove the Oxygen Generator
 S 034-006
 (1)
Open the mounting bracket fasteners.

 S 824-007

 (2)
Move the mounting bracket away from the generator.

 S 024-062
 WARNING: MAKE SURE YOU OBEY ALL APPLICABLE REGULATORY REQUIREMENTS
_______ FOR THE TRANSPORT OF OXYGEN GENERATORS. IF THE SERVICE LIFE OF THE GENERATORS HAS EXPIRED, YOU MUST FIRE THE GENERATORS AND MAKE SURE THE OXIDIZER CORE IS EMPTY. THIS MUST BE DONE BEFORE YOU PREPARE THE GENERATORS FOR TRANSPORT. IF THE GENERATORS ARE NOT FIRED AND EMPTY, THEY CAN ACCIDENTALLY FIRE DURING TRANSPORT AND CAUSE HEAT AND IGNITION. THIS CAN CAUSE DEATH OR INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT.
 CAUTION: YOU MUST BE VERY CAREFUL WHEN YOU REMOVE THE OXYGEN GENERATOR.
_______ DO NOT APPLY FORCE TO AN OXYGEN GENERATOR OR LET IT FALL. THESE ACTIONS CAN PREVENT THE OPERATION OF THE OXYGEN GENERATOR. DO NOT TRY TO REMOVE THE FIRING MECHANISM FROM THE OXYGEN GENERATOR. IT CANNOT BE ASSEMBLED AGAIN.
 (3) Remove the oxygen generator.
 TASK 35-22-11-404-067
 3.  Oxygen Generator Installation, Passenger Service Unit (Fig. 401)_____________________________________________________
 A. References
 (1) AMM 35-22-11/201, Oxygen Generator
 B. Access
 (1)  Location Zone
 100 Upper Half of the Fuselage

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 C.  Prepare to Install the Oxygen Generator
 NOTE:____Capacities of the oxygen generators are not all the same. Make sure you use the correct part number before you install the generator.
 S 214-055
 WARNING: MAKE SURE THE SAFETY PIN WITH A WARNING FLAG IS INSTALLED ON
_______ THE GENERATOR. THE GENERATOR IS A PYROTECHNIC-ACTIVATED DEVICE. IF THE GENERATOR FIRES, IT WILL GET VERY HOT (450°F OR MORE). THE HOT GENERATOR CAN BURN YOU. YOU MUST NOT TOUCH THE GENERATOR UNTIL IT IS COOL.
 CAUTION: YOU MUST BE VERY CAREFUL WHEN YOU INSTALL THE OXYGEN GENERATOR.
_______ DO NOT APPLY FORCE TO AN OXYGEN GENERATOR OR LET IT FALL. THESE ACTIONS CAN PREVENT THE OPERATION OF THE OXYGEN GENERATOR. DO NOT TRY TO REMOVE THE FIRING MECHANISM FROM THE OXYGEN GENERATOR. IT CANNOT BE ASSEMBLED AGAIN.
 (1)  Make sure the oxygen generator did not fire as follows:
 (a)  Look at the heat sensitive band on the generator. 1) If the heat sensitive band is black, the generator fired.
 NOTE: Do not install this generator.
____
 (b)  Look at the position of the firing pin.
 1)  If the firing pin is in the fired position you cannot install the release pin.
 NOTE: The oxygen generator fired or the firing mechanism
____ is bad. Do not install this generator.
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