(4)
Remove the access platform(s).
(5)
Close the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-002).
Subtask 35-21-00-862-055
B. De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
OXYGEN STORAGE - ADJUSTMENT/TEST
________________________________
TASK 35-21-00-790-001
Leakage and Obstruction Test of the Filling Line
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific a shut-off valve, a vent device and an overpressure
device No specific circuit breaker(s) safety clip(s) No specific lint-free cloth No specific pressure measuring device No specific GROUND PRESSURE SOURCE (Nitrogen A_A_59503, Type 1,
Class 1, Grade B) No specific access platform 1.6 m (5 ft. 3 in.) No specific 1 WARNING NOTICE
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 05-004 USA MIL-L-25567 TYPE I OXYGEN LEAK DETECTOR (Ref. 20-31-00)
C. 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
25-55-12-000-003 Removal of the Sidewall Panels in the AFT Cargo Compartment - FR59/FR65
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
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
35-21-00-991-006 Fig. 501
3. Job Set-up__________
Subtask 35-21-00-861-052
A. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 35-21-00-865-053
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 35-21-00-010-055
C. 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).
(5) Close the manual shut-off valves of the emergency oxygen cylinders. Subtask 35-21-00-941-050
D. Safety Precautions
(1)
Put a WARNING NOTICE in position in the cockpit to tell persons not to operate the emergency oxygen system.
(2)
Put a WARNING NOTICE in position in the cockpit and in the cargo compartment to tell persons that a pressure test continues.
4. Procedure
_________ (Ref. Fig. 501/TASK 35-21-00-991-006) 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 35-21-00-860-050
A. Obey the special precautions when you do this task (Ref. TASK 35-00-00-860-001).
Subtask 35-21-00-480-051
B. Connect the Ground Service Equipment WARNING : MAKE SURE THAT THE GROUND SUPPORT EQUIPMENT IS APPROVED FOR THE
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