Subtask 35-00-00-862-050
B. De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
TASK 35-00-00-960-002
Replacement of a Line in the High Pressure Section of the Gaseous Oxygen System
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 clean lint-free cloth No specific TEST TOOL - MANUAL RELEASE No specific access platform 1.6 m (5 ft. 3 in.) No specific 1 BAG - VINYL No specific 1 PLUG - BLANKING, APPROVED FOR USE WITH OXYGEN No specific 1 WARNING NOTICE
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 11-005 TRICHLOROTRIFLUORO ETHANE (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
20-21-14-911-001 Tightening Torques for Oxygen Unions 20-28-00-912-006 Electrical Bonding of Pipes 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 25-55-12-000-003 Removal of the Sidewall Panels in the AFT Cargo Compartment - FR59/FR65
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
25-55-12-400-003 Installation 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
35-21-00-614-001
35-23-00-790-002 Leak Check of Components in the Distribution Network of the Oxygen System
52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump
52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump
3. Job Set-up__________
Subtask 35-00-00-861-051
A. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 35-00-00-865-052
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU OXYGEN/PASSENGER/CTL AND WARN 2WR HA03 49VU OXYGEN/PASSENGER/CTL AND WARN 1WR HA02
Subtask 35-00-00-941-051
C. Put a WARNING NOTICE in position in the cockpit to tell persons not to operate the emergency oxygen system.
Subtask 35-00-00-010-052
D. Get Access
(1)
Open the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-001).
(2)
Put the access platform below the AFT cargo-compartment door 826.
(3)
Set the CARGO COMPT LIGHT switch 8LU to the ON position.
(4)
Remove the related lining panel to get access to the oxygen storage
(Ref. TASK 25-55-12-000-003). Subtask 35-00-00-614-051
E. Depressurize the Emergency Oxygen System
(1)
Close the manual shut-off valves of the emergency oxygen cylinders.
(2)
Put the TEST TOOL - MANUAL RELEASE on the oxygen test port 7504WR1 to release the pressure from the system.
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 35-00-00-860-052
A. Obey the special precautions when you do this task (Ref. TASK 35-00-00-860-001).
Subtask 35-00-00-020-051
B. Removal of a Line from the Gaseous Oxygen System
(1)
If necessary, remove the clamps from the line. NOTE : Make a note of the position of the clamps for the installation
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