(d)  
Fuel jettison transfer valve for the No. 3 main tank

 (3)  
The fuel tanks can contain any quantity of fuel. There is not a fuel quantity limit for this task.

 B.
References

 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AIPC 28-31-04 Fig. 5

 (3)  
SSM 28-31-01

 (4)  
WDM 28-31-12

 C.
Access

 (1)  
Location Zones
 221 Control Cabin, Left
 222 Control Cabin, Right

 D.
Operational Test of the Fuel Jettison Transfer Valves

 S 865-174
 (1)  
Make sure the airplane is in the ground mode (airplane not jacked and targets not installed).

 S 865-175

 (2)
Supply electrical power, if it is not available (AMM 24-22-00/201).

 S 865-176
 WARNING: MAKE SURE THE FUEL JETTISON NOZZLE VALVE SWITCHES ARE IN THE
_______ OFF POSITION. FAILURE TO SET THE FUEL JETTISON NOZZLE VALVE SWITCH IN THE OFF POSITION CAN CAUSE FUEL LEAKAGE.
 (3)  Make sure the FUEL JETTISON L NOZZLE and NOZZLE R switches on the fuel jettison module, on the P5 pilots' overhead panel, are closed (word ON not shown).
 S 865-201
 WARNING: MAKE SURE THESE CIRCUIT BREAKERS ARE OPEN AND DO-NOT-CLOSE TAGS
_______ ARE ATTACHED. FAILURE TO OPEN THESE CIRCUIT BREAKERS CAN CAUSE FUEL LEAKAGE. A FUEL LEAK CAN CAUSE A DANGEROUS CONDITION FOR EQUIPMENT AND PERSONS.
 (4)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
On the main power distribution panel, P6:
 1) 6C18, JTSN NOZZLE VLV CONT R
 2) 6D18, JTSN NOZZLE VLV CONT L

 (b)  
On the left power distribution center, P414:
 1) 414C5, FUEL OVRD/JTSN PUMP FWD 3
 2) 414C2, FUEL OVRD/JTSN PUMP FWD 2

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 28-31-00
 ALL  ú ú 13 Page 552 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 3) 414D2, OVRD/JTSN PUMP CTR L
 (c)  On the right power distribution center, P415:
 1) 415A38, FUEL OVRD/JTSN PUMP AFT 2
 2) 415B38, FUEL OVRD/JTSN PUMP AFT 3
 3) 415M32, OVRD/JTSN PUMP CTR R

 S 865-202
 (5)  Put the FUEL JETTISON control selector switch on the fuel jettison module, on the P5 pilots' overhead panel, to A.
 NOTE: FUEL JETTISON control selector switch must be in the
____
 position A. Test will not pass with the switch in
 position B.

 S 865-180
 (6)  
Set the GND TESTS switch on the overhead maintenance panel, P461, to the ENABLE position.

 S 865-181

 (7)  
Prepare the CDU for the test:

 (a)  
Push the MENU key on the CDU to show the MENU.

 (b)  
Push the line select key (LSK) that is adjacent to <CMC to show the CMC MENU.

 (c)  
If <RETURN shows after you push the LSK, push the LSK that is adjacent to <RETURN until you see the CMC MENU.

 (d)  
Push the LSK that is adjacent to <GROUND TESTS to show the GROUND TESTS menu.

 (e)  
Push the NEXT PAGE key until you find <28 FUEL.

 (f)  
Push the LSK that is adjacent to <28 FUEL to show the GROUND TESTS menu for the fuel system.

 (g)  
Push the NEXT PAGE key until you find <JETT TRANSFER VLV.

 NOTE: If INHIBITED shows above <JETT TRANSFER VLV, the test
____
 will not operate.

 (h)  If INHIBITED shows above <JETT TRANSFER VLV: 1) Push the LSK that is adjacent to the test prompt. 2) Do the steps shown on the CDU. 3) Push the LSK that is adjacent to <RETURN to show the ground
 test menu again.
 S 745-182
 (8)  
Push the LSK that is adjacent to the applicable prompt (<JETT TRANSFER VLV).

 (a)  
When the TEST PRECONDITIONS page shows, make sure each instruction on the page is completed. (Push the NEXT PAGE key to see the subsequent pages).

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