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 Installation of the Overflow Valve 8MP
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Expendable Parts
 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
cotter pin 38-14-48 01 -040
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-15-38-613-001 Fill the Potable Water Tank System (Aircraft Electrical Power Available) 24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power 38-10-00-614-001 Pressurization of the Potable Water System from a
 Ground Air Supply 38-10-00-614-002 Depressurization of the Potable Water System 52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the
 Yellow Electric Pump 38-14-44-991-001 Fig. 401
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 3. Job Set-up
__________ Subtask 38-14-44-860-051
 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the ground service network is energized from the external power (Ref. TASK 24-42-00-861-001).

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

 Subtask 38-14-44-865-053-A
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and
 tagged -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------
2000VU WATER SYS - QUANT IND 1MA B01 2001VU WATER SYS - DRAIN 1MP B05
 Subtask 38-14-44-560-050
 C. Preparation for Installation
 (1)
 Make sure that the parts retained from the removed component are clean and in the correct condition.

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

 (3)
 If removed, put the insulation sleeve (11) in position.

 4. Procedure
_________ (Ref. Fig. 401/TASK 38-14-44-991-001) Subtask 38-14-44-420-050
 A. Installation of the Overflow valve 8MP
 (1)
 Put the overflow valve (1) in position and install the spacers (8), the washers (9) and the bolts (10).

 (2)
 Remove the blanking plugs.

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 (3)
 Connect the connections (2) to the overflow valve 8MP (1) and tighten.

 (4)
 Remove the blanking caps

 (5)
 Make sure that the electrical connectors are clean and in the correct condition.

 (6)
 Connect the electrical connector 8MP-A (3) to the overflow valve 8MP (1).

 (7)
 Put the control cable (6) in position.

 (8) Install the pin (7), the washer (5) and a new cotter pin (4). Subtask 38-14-44-860-050
 B. Preparation for Test
 (1)
 Do an inspection of the component interface and/or the adjacent area.

 (2)
 If necessary fill the potable water tank (Ref. TASK 12-15-38-613-001).

 (3)
 Presssurize the potable water system (Ref. TASK 38-10-00-614-001).

 (4)
 Examine the overflow valve 8MP (1) and the connections for leaks. NOTE : Leaks are not permitted.

____ Subtask 38-14-44-865-052-B
 C. Remove the safety clip(s) and the tag(s) and close this(these) circuit
 breaker(s): -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------
2000VU WATER SYS - QUANT IND 1MA B01 2001VU WATER SYS - DRAIN 1MP B05
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 Subtask 38-14-44-710-050

 D. Do this test.
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. At the service panel 2023VU:
-turn and pull the fill and drain control handle from the NORMAL to the FILL position.
　
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