(Ref. Fig. 401/TASK 38-41-43-991-001) R **ON A/C 151-199, 301-399, 401-499,
 (Ref. Fig. 401A/TASK 38-41-43-991-001-A)
 **ON A/C ALL

 Subtask 38-41-43-420-050
 A. Installation of the Pressure Reducing Valve 4200MM
 (1)
 Put the pressure reducing valve 4200MM (4) in position.

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

 (3)
 Install the washers (2) and the nuts (3).

 (4) Connect the pipes (1) and (5).
 Subtask 38-41-43-613-050

 B. Fill the potable water system (Ref. TASK 12-15-38-613-001).

 Subtask 38-41-43-710-050

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

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

 (3)
 If necessary do the adjustment of the pressure reducing valve (Ref. TASK 38-41-00-820-001).

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

 Subtask 38-41-43-410-050
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the access panels 131NW, 132PW.

 (3)
 Close the FWD cargo-compartment door (Ref. TASK 52-30-00-860-002).

 (4) Remove the access platform(s). R **ON A/C 151-199, 301-399, 401-499,
 Subtask 38-41-43-410-050-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 161DW.

 (3)
 Close the AFT cargo-compartment door (Ref. TASK 52-30-00-860-002).

 (4)
 Remove the access platform(s).

R **ON A/C ALL

 Subtask 38-41-43-862-050
 B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

 SHUTTLE VALVE - AIR (4215MM) - REMOVAL/INSTALLATION
___________________________________________________
 TASK 38-41-44-000-001 Removal 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. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific 1 ACCESS PLATFORM 2M (6 FT)
 No specific 1 PLUG - BLANKING

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
 External Power 25-54-12-000-001 Removal of the FWD Cargo Compartment Partition FR34 25-55-12-000-001 Removal of the AFT Cargo Compartment Partition FR65 38-10-00-614-002 Depressurization of the Potable Water System 52-30-00-860-001 Open 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 38-41-44-861-050

 A. Energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-861-002).

 Subtask 38-41-44-614-050
 B. Depressurize the potable water system. (Ref. TASK 38-10-00-614-002). Subtask 38-41-44-941-050
 C. Safety Precautions
 (1) Put warning notices in position to tell persons not to pressurize the potable water system.
 **ON A/C 001-049, 051-099, 101-149, 201-299,
 Subtask 38-41-44-010-050-A
 D. Get Access
 (1)
 Open the FWD cargo-compartment door (Ref. TASK 52-30-00-860-001).

 (2)
 Put the ACCESS PLATFORM 2M (6 FT) in position.

 (3) Remove the access panel 131PW (Ref. TASK 25-54-12-000-001). R **ON A/C 151-199, 301-399, 401-499,
 Subtask 38-41-44-010-050
 D. Get Access
 (1)
 Open the AFT cargo-compartment door (Ref. TASK 52-30-00-860-001).

 (2)
 Put the ACCESS PLATFORM 2M (6 FT) in position.
　
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