(2)
FOR 7553WR460 Remove the ceiling panel 241FC (Ref. TASK 25-23-41-000-001).
4. Procedure
_________
WARNING : KEEP ALL HYDROCARBONS (FUELS, LUBRICANTS, ETC.) AWAY FROM ALL
_______
SOURCE OF OXYGEN. OXYGEN BECOMES EXPLOSIVE WHEN IT TOUCHES
HYDROCARBONS.
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.
Subtask 35-22-61-860-050
A. Obey the special precautions when you do this task (Ref. TASK 35-00-00-860-001).
Subtask 35-22-61-020-050
B. Removal of the Shut-Off Valve - Main Distribution Line
(7550WR510,7553WR460)
(Ref. Fig. 401/TASK 35-22-61-991-001)
(1)
If necessary, remove the clamps of the pipes adjacent to the shut-off valve (3).
(2)
Loosen the nuts (2) and (4) and disconnect the pipes (1) and (5).
(3)
Remove the shut-off valve (3).
(4)
Put PLUG - BLANKING on the disconnected line ends.
(5)
Put the disconnected line ends into a sealed BAG - VINYL.
Shut-Off Valve - Main Distribution Line (7550WR510,7553WR460)
Figure 401/TASK 35-22-61-991-001
CES TASK 35-22-61-400-001
Installation of the Shut-Off Valve - Main Distribution Line (7550WR510,7553WR460)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Torque Wrench : range 1.00 to 10.00 m.daN
(8.00 to 75.00 lbf.ft)
B. 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 35-00-00-860-001 Special precautions when working on a Gaseous Oxygen System 35-23-00-790-002 Leak Check of Components in the Distribution Network
of the Oxygen System 35-22-61-991-001 Fig. 401 FOR FIN 7550WR510 25-23-43-000-001 Removal of the Upper Sidewall Panel(s) 25-23-43-400-001 Installation of the Upper Sidewall Panel(s) FOR FIN 7553WR460 25-23-41-000-001 Removal of the Ceiling Panels 25-23-41-400-001 Installation of the Ceiling Panels
3. Job Set-up
__________ Subtask 35-22-61-860-051
A. Aircraft Maintenance Configuration
(1)
Make sure that the ground service network is energized
(Ref. TASK 24-41-00-861-002).
(2)
Make sure that a warning notice is in position in the cockpit to tell persons not to operate the emergency oxygen system.
(3)
Obey the special precautions when you do this task (Ref. TASK 35-00-00-860-001).
(4)
FOR 7550WR510 Make sure that the sidewall panel 251HW is removed (Ref. TASK 25-23-43-000-001).
(5)
FOR 7553WR460 Make sure that the ceiling panel 241FC is removed (Ref. TASK 25-23-41-000-001).
Subtask 35-22-61-865-051
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU OXYGEN/PASSENGER/CTL AND WARN 2WR HA03 49VU OXYGEN/PASSENGER/CTL AND WARN 1WR HA02
4. Procedure
_________
WARNING : KEEP ALL HYDROCARBONS (FUELS, LUBRICANTS, ETC.) AWAY FROM ALL
_______
SOURCE OF OXYGEN. OXYGEN BECOMES EXPLOSIVE WHEN IT TOUCHES
HYDROCARBONS.
WARNING : CLEAN THE TOOLS AND MAKE SURE YOUR HANDS ARE CLEAN TO PREVENT
_______
CONTAMINATION OF THE OXYGEN SYSTEM.
Subtask 35-22-61-420-050
A. Installation of the Shut-Off Valve - Main Distribution Line
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