Subtask 35-21-53-865-050
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 35-21-53-941-050
C. Put a WARNING NOTICE in position in the cockpit to tell persons not to operate the emergency oxygen system.
Subtask 35-21-53-010-050
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).
(5)
Close the manual shut-off valves of the emergency oxygen cylinders.
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 35-21-53-860-051
A. Obey the special precautions when you do this task (Ref. TASK 35-00-00-860-001).
Subtask 35-21-53-020-050
B. Removal of the Thermal Compensator (7621WR-7626WR)
(Ref. Fig. 401/TASK 35-21-53-991-001)
(1)
If necessary, remove the support brace C63.
(2)
Hold the end fitting (5) so that it cannot turn and loosen the nut (1).
(3)
Hold the end fitting (3) so that it cannot turn, loosen the nut (4) and remove the thermal compensator (2).
(4)
Put PLUG - BLANKING on the disconnected line ends.
(5)
Put the disconnected line ends into a sealed BAG - VINYL.
Thermal Compensator (7621WR-7626WR)
Figure 401/TASK 35-21-53-991-001
EFF : 401-499, 35-21-53 Page 404
Aug 01/05
CES
TASK 35-21-53-400-001
Installation of the Thermal Compensator (7621WR-7626WR)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific access platform 1.6 m (5 ft. 3 in.)
No specific Torque Wrench : range 0.20 to 3.60 m.daN
(2.00 to 26.00 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 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 35-21-00-790-001 Leakage and Obstruction Test of the Filling Line 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 35-21-53-991-001 Fig. 401
3. Job Set-up
__________ Subtask 35-21-53-860-050
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 sytem.
(3)
Make sure that the access platform is in position at the AFT cargo-compartment door 826.
(4)
Make sure that the AFT cargo-compartment door 826 is open (Ref. TASK 52-30-00-860-001).
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