(3)
 Remove the access panel 161DW (Ref. TASK 25-55-12-000-001).

 **ON A/C ALL
 4. Procedure
_________
 **ON A/C 001-049, 051-099, 101-149, 201-299,

 (Ref. Fig. 401/TASK 38-41-44-991-001-A) R **ON A/C 151-199, 301-399, 401-499,
 (Ref. Fig. 401A/TASK 38-41-44-991-001)
 **ON A/C ALL

 Subtask 38-41-44-020-050
 A. Removal of the Shuttle Valve 4215MM
 (1)
 Disconnect the conectors (1).

 (2)
 If necessary remove the screw (3) and the clamp (4).

 (3)
 Remove the shuttle valve 4215MM (2).

 (4)
 Put PLUG - BLANKING on the disconnected line ends.

 Shuttle Valve Figure 401/TASK 38-41-44-991-001-A
R 1EFF : 001-049, 051-099, 101-149, 201-299, 1 38-41-44Page 404 1 1 May 01/05 1 1 1CES 1

 Shuttle Valve
 Figure 401A/TASK 38-41-44-991-001

R 1EFF : 151-199, 301-399, 401-499, 1 38-41-44Page 405 1 1 Aug 01/05 1 1 1CES 1 TASK 38-41-44-400-001

 Installation of the Shuttle Valve 4215MM
 WARNING : MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START
_______
 WORK ON THE PNEUMATIC SYSTEM.

 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
12-15-38-613-001 Fill the Potable Water Tank System (Aircraft Electrical Power Available) 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 25-54-12-400-001 Installation of the FWD Cargo Compartment Partition FR34 25-55-12-400-001 Installation of the AFT Cargo Compartment Partition
 FR65
 38-10-00-614-002 Depressurization of the Potable Water System
 38-41-00-710-001 Operational Test of the Air Supply System (with

 ground air supply)
 38-41-00-710-002 Operational Test of the Potable-Water Air

 Supply-System (with the aircraft pneumatic system) 38-41-00-790-001 Leak Check of the Components in the Air Supply System 52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the
 Yellow Electric Pump
 **ON A/C 001-049, 051-099, 101-149, 201-299,
 38-41-44-991-001-A Fig. 401
R **ON A/C 151-199, 301-399, 401-499,
 38-41-44-991-001 Fig. 401A **ON A/C ALL

 3. Job Set-up
__________
 Subtask 38-41-44-860-050

 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).

 (2)
 Make sure that the potable water system is depressurized (Ref. TASK 38-10-00-614-002).

 (3)
 Make sure that the warning notices are in position to tell persons not to pressurize the potable water system.

 4. Procedure
_________
 **ON A/C 001-049, 051-099, 101-149, 201-299,

 (Ref. Fig. 401/TASK 38-41-44-991-001-A) R **ON A/C 151-199, 301-399, 401-499,
 (Ref. Fig. 401A/TASK 38-41-44-991-001)
 **ON A/C ALL

 Subtask 38-41-44-420-050
 A. Installation of the Shuttle Valve 4215MM
 (1)
 Put the pressure shuttle valve 4215MM (2) in position.

 (2)
 Remove the blanking plugs from the line ends.

 (3)
 Connect the conectors (1).

 (4)
 If removed, put the clamp (4) in position and install the screw (3).

 (5)
 Remove the warning notice(s).

 Subtask 38-41-44-613-050

 B. Fill the potable water system (Ref. TASK 12-15-38-613-001).
 Subtask 38-41-44-710-050

 C. Test
 (1)
 Do the leak test of the component (Ref. TASK 38-41-00-790-001).

 (2)
 Do these two operational test of the potable water air system (Ref. TASK 38-41-00-710-001) and (Ref. TASK 38-41-00-710-002).

 5. Close-up
________
 **ON A/C 001-049, 051-099, 101-149, 201-299,

 Subtask 38-41-44-410-050-A
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the access panel 131PW (Ref. TASK 25-54-12-400-001).

 (3)
 Remove the access platform(s).

 (4) Close the FWD cargo-compartment door (Ref. TASK 52-30-00-860-002). R **ON A/C 151-199, 301-399, 401-499,
　
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