3. Job Set-up
__________ Subtask 35-22-64-860-051
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)
Make sure that the ceiling panel 231CC is removed (Ref. TASK 25-23-41-000-001).
(4)
Obey the special precautions when you do this task (Ref. TASK 35-00-00-860-001).
Subtask 35-22-64-865-051
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 35-22-64-420-050
A. Installation of the Bleed Vent Valve (7503WR)
(Ref. Fig. 401/TASK 35-22-64-991-001)
(1)
Do an inspection of the component interface and/or the adjacent area.
(2)
Remove the vinyl bags from the disconnected line ends.
(3)
Remove the blanking plugs from the disconnected line ends.
(4)
Put the bleed vent valve (2) in position and tighten the nut (1) with your fingers.
NOTE : The flow arrow on the bleed vent valve must point in the flow
____
direction.
(5) TORQUE the nut (1) to between 1.48 and 1.93 m.daN (10.91 and 14.23 lbf.ft).
NOTE : You must hold the fitting tightly in the correct position.
____ Subtask 35-22-64-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1WR, 2WR.
Subtask 35-22-64-790-050
C. Do this leakage check (Ref. TASK 35-23-00-790-002). Subtask 35-22-64-942-050
D. Remove the warning notice(s).
5. Close-up
________ Subtask 35-22-64-410-050
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Install the ceiling panel 231CC (Ref. TASK 25-23-41-400-001). Subtask 35-22-64-862-050
B. De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
TEST PORT - OXYGEN (7504WR1,7504WR2,7504WR3) - REMOVAL/INSTALLATION
___________________________________________________________________
TASK 35-22-65-000-001
Removal of the Oxygen Test Ports (7504WR1/7504WR2)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific access platform 1.6 m (5 ft. 3 in.) No specific 1 BAG - VINYL No specific 1 PLUG - BLANKING No specific 1 WARNING NOTICE FOR FIN 7504WR1 No specific TEST TOOL - MANUAL RELEASE
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 25-55-12-000-003 Removal of the Sidewall Panels in the AFT Cargo Compartment - FR59/FR65 35-00-00-860-001 Special precautions when working on a Gaseous Oxygen System 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 35-22-65-991-001 Fig. 401
3. Job Set-up
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