1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking cap
 No specific blanking plug
 No specific circuit breaker(s) safety clip(s)
 No specific sealed vinyl bag
 No specific access platform 2 m (6 ft. 7 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002  Energize the Aircraft Electrical Circuits from the External Power
R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
 35-13-15-991-001  Fig. 401
 EFF : ALL

35-13-15Page 401

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R **ON A/C 051-099,
R 35-13-15-991-001-A Fig. 401A R **ON A/C ALL
 3. Job Set-up
__________
 Subtask 35-13-15-010-050

 A. Get Access
 (1) Put the access platform in position at the access door 812.
 (2) Open the access door 812.
 Subtask 35-13-15-860-050

 B. Aircraft Maintenance Configuration
 (1)
 Close the valve of the oxygen cylinder/valve assembly (5750HM).

 (2)
 Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 Subtask 35-13-15-614-050
 C. Bleed the oxygen system :
 (1)
 In the cockpit, on the panel 21VU, push the OXYGEN/CREW SUPPLY pushbutton switch. The OFF legend goes off.

 (2)
 On an oxygen mask, operate the PRESS TO TEST AND RESET slide a sufficient number of times to make the system empty.

 (3)
 On the panel 21VU, release the OXYGEN/CREW SUPPLY pushbutton switch. The OFF legend comes on.

 EFF : ALL

35-13-15Page 402

 Subtask 35-13-15-865-050
 D. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
 -------------------------------------------------------------------------------
49VU OXYGEN/CREW/OXY/SPLY 1HT HA01
 4. Procedure
_________ R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
 (Ref. Fig. 401/TASK 35-13-15-991-001)
 **ON A/C 051-099,

 (Ref. Fig. 401A/TASK 35-13-15-991-001-A) R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
 Subtask 35-13-15-020-051
 A. Removal of the Oxygen Pressure Regulator/Transmitter
 (1)
 Disconnect the electrical connector (3) from the oxygen pressure regulator/transmitter (9).

 (2)
 Put a blanking cap on the electrical connector (3).

 (3)
 Disconnect the plug assembly (1) and discard the bush (2).

 (4)
 Put a blanking plug on the plug assembly (1)

 (5)
 Put the plug assy (1) in a sealed vinyl bag.

 (6)
 Disconnect the hose (5) and discard the bush (4).

 (7)
 Put a blanking cap on the hose (5).

 (8)
 Disconnect the hose (6) and discard the bush (7).

 (9)
 Put a blanking cap on the hose (6).

 EFF : ALL

35-13-15Page 403

 Oxygen Pressure Regulator/Transmitter Figure 401/TASK 35-13-15-991-001 
R  EFF : 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,  35-13-15 Page 404 Aug 01/05
 CES 

R R  Oxygen Pressure Regulator/Transmitter Figure 401A/TASK 35-13-15-991-001-A 
R  EFF :  051-099,  35-13-15 Page 405 May 01/05
 CES 

 (10) Loosen the nut (8) and remove the oxygen pressure
 regulator/transmitter (9).
 (11) Put an oxygen-cylinder stowage cap on the cylinder valve (11). 
R  **ON A/C 051-099, 
R  Subtask 35-13-15-020-051-A 
R  A. Removal of the Oxygen Pressure Regulator/Transmitter 
R  (1) Disconnect the electrical connector (3) from the oxygen pressure 
R  regulator/transmitter (9). 
　
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