TASK 35-23-21-400-001
 Installation of the Fill Panel Pressure Indicator (980WR)
 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.)
 B. Referenced Information
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REFERENCE  DESIGNATION
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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
 35-23-21-991-001  Fig. 401 3. Job Set-up

__________ Subtask 35-23-21-860-051
 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)
 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).

 (5)
 Make sure that the CARGO COMPT LIGHT switch 8LU is in the ON position.

 (6)
 Make sure that the related lining panel is removed (Ref. TASK 25-55-12-000-003).

 (7)
 Make sure that the manual shut-off valves of the emergency oxygen cylinders are close.

 (8)
 Obey the special precautions when you do this task (Ref. TASK 35-00-00-860-001).

 Subtask 35-23-21-865-051
 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 35-23-21-420-050
 A. Installation of the Fill Panel Pressure Indicator (980WR)
 (Ref. Fig. 401/TASK 35-23-21-991-001)

 (1)
 Clean the component interface and/or the adjacent area.

 (2)
 Do an inspection of the component interface and/or the adjacent area.

 (3)
 Put the fill panel pressure indicator (1) in position. NOTE : Make sure that the indicator is installed the correct way up.

____

 (4)
 Fasten the screws (3).

 (5)
 Remove the blanking caps from the electrical connectors.

 (6)
 Make sure that the electrical connectors are clean and in the correct condition.

 (7)
 Connect the electrical connector 980WR-A (2).

 (8)
 Put the cover assembly (5) in position and lock the quick release fasteners (4).

 Subtask 35-23-21-865-052
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1WR, 2WR.
 Subtask 35-23-21-710-050
 C. Operational Test of the Fill Panel Pressure Indicator (980WR)
 (1)
 Calculate the average pressure in the oxygen cylinders.

 (a)
 Read the pressure on the gage of each oxygen cylinder.

 (b)
　
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