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
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
35-21-54-991-001 Fig. 201
3. Job Set-up__________
Subtask 35-21-54-861-050
A. Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 35-21-54-865-050
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 35-21-54-010-050
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 35-21-54-941-050
D. Put a WARNING NOTICE in position in the cockpit to tell persons not to operate the emergency oxygen 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 35-21-54-860-050
A. Obey the special precautions when you do this task (Ref. TASK 35-00-00-860-001).
Subtask 35-21-54-020-050
B. Removal of the Overboard Discharge Indicator (7521WR)
(Ref. Fig. 201/TASK 35-21-54-991-001)
(1)
Remove and discard the circlip (2).
(2)
Remove and discard the green reflective washer (3) and the yellow reflective washer (4) from the body of the indicator (5).
(3)
Clean the body of the indicator (5) with a clean lint-free cloth and CLEANING AGENTS (Material No. 11-005).
Overboard Discharge Indicator (7521WR)
Figure 201/TASK 35-21-54-991-001
EFF : 401-499, 35-21-54 Page 204
Aug 01/05
CES
Subtask 35-21-54-160-050
C. Flush the Pipe connected to the Overboard Discharge Indicator
(1)
Loosen the nut (7) and disconnect the pressure relief valve (8).
(2)
Put CAP - DUST on the disconnected end of the pressure relief valve.
(3)
Put the disconnected line ends into a sealed BAG - VINYL.
(4)
Connect the LP air source (with air that is dry, clean and contains no oil) to the pipe end (6).
(5)
Operate the LP air source to blow unwanted particles out of the overboard discharge pipe.
(6)
Disconnect the LP air source.
(7)
Remove the vinyl bag from the disconnected line end.
(8)
Remove the dust cap from the disconnected end of the pressure relief valve.
(9)
Connect the pressure relief valve (8) to the line end and tighten the nut (7) with your fingers.
(10) TORQUE the nut (7) to between 1.50 and 1.66 m.daN (11.06 and 12.24 lbf.ft).
Subtask 35-21-54-420-050
D. Installation of the Overboard Discharge Indicator (7521WR)
(Ref. Fig. 201/TASK 35-21-54-991-001)
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