(a)  
For the main tanks do these steps: 1) Remove the ventilation equipment from the airplane. 2) Remove the ground from the airplane to the ventilation

 blower. 3) Install the applicable main tank access doors (AMM 28-11-02/401).

 (b)  
For the reserve and surge tanks, do these steps: 1) Remove the ventilation equipment from the airplane. 2) Remove the ground from the airplane to the ventilation

 blower. 3) Install the reserve tank access doors (AMM/28-11-02/401). 4) Install the surge tank access doors (AMM 28-11-03/401).

 (c)  
For the center wing tank, do these steps: 1) Remove the air ventilation equipment from the airplane. 2) Remove the ground from the airplane to the ventilation

 blower. 3) Install the center wing tank access doors (AMM 28-11-01/401). 4) Install the center wing tank purge tank door (if removed) (AMM 28-11-06/401).
 S 092-497
 (12)
 Follow approved procedures to clean and return all respiratory equipment.

 G.
Put the Airplane Back to the Usual Condition

 S 862-542
 (1)
Close these circuit breakers and remove the DO-NOT-CLOSE tags:

 (a)  
On the DC power distribution panel, P180:
 1) 180E2, FUEL OVRD/JTSN PMP CONT CTR L
 2) 180E3, FUEL OVRD/JTSN PMP CONT FWD 2&3
 3) 180E4, PUMP CONT BST 1 AFT 4 FWD
 4) 180E18, FUEL OVRD/JTSN PMP CONT AFT 2&3
 5) 180E19, PUMP CONT BST 1 FWD 4 AFT
 6) 180H4, PUMP CONT BST 2 AFT 3 FWD
 7) 180H18, FUEL OVRD/JTSN PMP CONT CTR R
 8) 180H19, PUMP CONT BST 2 FWD 3 AFT

 (b)  
On the left power distribution center panel, P414: 1) 414A8, MAIN FWD BST PUMP 4 2) 414B5, MAIN AFT BST PUMP 1

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747-400 MAINTENANCE MANUAL
 3) 414C5, FUEL OVRD/JTSN PUMP FWD 3
 4) 414C2, FUEL OVRD/JTSN PUMP FWD 2
 5) 414D2, OVRD/JTSN PUMP CTR-L
 6) 414E24, MN-AFT PUMP CONT BOOST 2
 7) 414J5, MAIN FWD BST PUMP 3
 8) 414R18, MAIN AFT BST PMP 2

 (c)  On the right power distribution center panel, P415:
 1) 415A35, MAIN AFT BOOST PUMP 4
 2) 415A38, FUEL OVRD/JTSN PUMP AFT 2
 3) 415B35, MAIN FWD BOOST PUMP 1
 4) 415B38, FUEL OVRD/JTSN PUMP AFT 3
 5) 415G29, MAIN FWD BOOST PUMP 2
 6) 415M29, MAIN AFT BOOST PUMP 3
 7) 415M32, OVRD/JTSN PUMP CTR-R

 S 862-544
 (2)  
Close any other circuit breakers that you opened for the purging and entry procedure.

 S 412-503

 (3)  
Connect these airplane batteries:

 (a)  
Main (AMM 24-31-01/401)

 (b)  
APU (AMM 24-31-06/401).

 S 092-589
 WARNING: USE THE PROCEDURE IN AMM 32-00-30/201 TO REMOVE THE DOOR LOCKS.
_______ DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  Remove the door locks from the landing gear doors and close the doors (AMM 32-00-30/201).
 S 092-590
 WARNING: DO THE ACTIVATION PROCEDURE FOR THE TRAILING EDGE FLAPS.
_______ ACCIDENTAL OPERATION OF THE TRAILING EDGE FLAPS COULD CAUSE INJURY TO PERSONS.
 (5)  Do the activation procedure for the trailing edge flaps (AMM 27-51-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 S 092-591 WARNING: MAKE SURE NO PERSONS ARE IN THE LEADING EDGE FLAP AREA WHEN YOU
_______
 DO THE ACTIVATION OF THE LEADING EDGE FLAP PROCEDURE. PERSONS ARE IN THE FLAP AREA, INJURY CAN OCCUR. IF
 (6)  Do the activation of the leading edge flaps procedure (AMM 27-81-00/201).
　
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