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 35-22-63-860-050
A. Obey the special precautions when you do this task (Ref. TASK 35-00-00-860-001).
Subtask 35-22-63-020-050
B. Removal of the Check Valve (7501WR1,7501WR2)
(Ref. Fig. 401/TASK 35-22-63-991-001)
(1)
Loosen the nuts (1) and (3) and remove the check valve (2).
(2)
Put PLUG - BLANKING on the disconnected line ends.
(3)
Put the disconnected line ends into a sealed BAG - VINYL.
Check Valve (7501WR1,7501WR2)
Figure 401/TASK 35-22-63-991-001
EFF : 401-499, 35-22-63 Page 404
Aug 01/05
CES
TASK 35-22-63-400-001
Installation of the Check Valve (7501WR1,7501WR2)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Torque Wrench : range 1.00 to 10.00 m.daN
(8.00 to 75.00 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 35-00-00-860-001 Special precautions when working on a Gaseous Oxygen System 35-23-00-790-002 Leak Check of Components in the Distribution Network
of the Oxygen System 35-22-63-991-001 Fig. 401 FOR FIN 7501WR1 53-22-12-000-001 Removal of the Cabin Floor Panels 53-22-12-400-001 Installation of the Cabin Floor Panels FOR FIN 7501WR2 25-23-41-000-001 Removal of the Ceiling Panels 25-23-41-400-001 Installation of the Ceiling Panels
3. Job Set-up
__________ Subtask 35-22-63-860-051
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)
Obey the special precautions when you do this task (Ref. TASK 35-00-00-860-001).
(4)
FOR 7501WR1 Make sure that the floor panel 231NF is removed (Ref. TASK 53-22-12-000-001).
(5)
FOR 7501WR2 Make sure that the ceiling panel 231DC is removed (Ref. TASK 25-23-41-000-001).
Subtask 35-22-63-865-051
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 35-22-63-420-050
A. Installation of the Check Valve (7501WR1,7501WR2)
(Ref. Fig. 401/TASK 35-22-63-991-001)
(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 check valve (2) in position and tighten the nuts (1) and (3) with your fingers.
NOTE : The flow arrow on the check valve must point in the flow
____
direction.
(5) TORQUE the nuts (1) and (3) to between 5.92 and 6.28 m.daN (43.65 and
46.31 lbf.ft).
NOTE : You must hold the fitting tightly in the correct position.
____ Subtask 35-22-63-865-052 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM OXYGEN 氧气(95)
