(2)
 Push the tool in until the latch is released. The door opens and the masks fall out.

 4. Procedure
_________
 (Ref. Fig. 401/TASK 35-21-43-991-001)
 Subtask 35-21-43-020-050
 A. Removal of the Oxygen Mask in the Cabin. WARNING : CLEAN THE TOOLS AND MAKE SURE YOUR HANDS ARE CLEAN TO PREVENT
_______
 CONTAMINATION OF THE OXYGEN SYSTEM.

 CAUTION : PUT DRY, CLEAN, METAL OR PLASTIC PLUGS ON ALL PIPES OR UNITS
_______ REMOVED TEMPORARILY. PUT EACH PIPE OR UNIT IN A SEALED VINYL BAG.
 CAUTION : DO NOT PULL THE GENERATOR-END OF THE LANYARD.
_______
 CAUTION : YOU MUST INSTALL THE SAFETY RINGS OR THE SAFETY PINS IF YOU:

_______

 -MOVE THE GENERATORS TO A DIFFERENT LOCATION, OR
 -PUT THEM INTO STORAGE.
 IF YOU DO NOT, THE GENERATORS CAN OPERATE AND CAUSE DAMAGE.

R  (1) Disconnect the lanyard cords (4) from the safety pin (3). NOTE : Do not remove the rings from the lanyard cords.
____
 EFF : ALL

35-21-43Page 402

 Emergency Oxygen Mask - Removal/Installation
 Figure 401/TASK 35-21-43-991-001
 EFF :  ALL  35-21-43 Page 403 
Nov 01/03
 CES 

 (2)
 Remove the clamps (5).

 (3)
 Carefully remove the oxygen supply hoses (1) from the outlet manifold

 (2) and remove the masks (6).
 EFF : ALL

35-21-43Page 404

 TASK 35-21-43-400-001
 Installation of the Oxygen Mask

 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002  Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 35-23-00-550-001 Packing of the Oxygen Masks R 35-23-00-710-001 Operational Check of Manual Mask Release 35-21-43-991-001 Fig. 401
 3. Job Set-up
__________
 Subtask 35-21-43-860-050

 A. Aircraft Maintenance Configuration
 (1) Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 WARNING : CLEAN THE TOOLS AND MAKE SURE YOUR HANDS ARE CLEAN TO
_______ PREVENT CONTAMINATION OF THE OXYGEN SYSTEM.
 EFF : ALL

35-21-43Page 405

 Subtask 35-21-43-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU OXYGEN/PASSENGER/ACTUATION 7WR HA08 49VU OXYGEN/PASSENGER/ACTUATION 6WR HA07 49VU OXYGEN/PASSENGER/ACTUATION 5WR HA06 49VU OXYGEN/PASSENGER/ACTUATION 4WR HA05
 4. Procedure_________
 (Ref. Fig. 401/TASK 35-21-43-991-001)
 Subtask 35-21-43-420-050 
R  A. Installation of the Oxygen Mask in the Cabin
 CAUTION : DO NOT PULL THE GENERATOR-END OF THE LANYARD._______
 NOTE : Do not cut the oxygen supply hoses. The hoses have a specified____ length for each location in the aircraft. 
R R R R  (1) Carefully install the oxygen supply hoses (1) on the outlet manifold (2). - Refer to the manufacturer's instructions. 
R  (2) Install and tighten the clamps (5). 
R  (3) Connect the lanyard cords (4) to the safety pin (3).
 (4) Put the mask assemblies into the emergency oxygen containers (Ref. TASK 35-23-00-550-001).
 Subtask 35-21-43-710-050
 B. Do the operational test of the passenger oxygen system (Ref. TASK 35-23-00-710-001).

35-21-43Page 406

 5. Close-up
________ Subtask 35-21-43-410-050
 A. Make sure that the work area is clean and clear of tool(s) and other items.
 Subtask 35-21-43-862-050
 B. De-energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-862-002).

 EFF : ALL

35-21-43Page 407

 TASK 35-21-43-100-001 Cleaning of the Passenger Oxygen Mask WARNING : KEEP ALL HYDROCARBONS (FUELS, LUBRICANTS, ETC.) AWAY FROM ALL SOURCE
_______ OF OXYGEN. OXYGEN BECOMES EXPLOSIVE WHEN IT TOUCHES HYDROCARBONS.
　
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