(a)
DS2102, Inboard Limit Switch Pack
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747-400 MAINTENANCE MANUAL
(b) DS2103, Outboard Limit Switch Pack
S 864-020
(9)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P6, Main Power Distribution Panel
1) 6L10, FUEL CONT VALVE ENG 1
2) 6L11, FUEL CONT VALVE ENG 2
3) 6L12, FUEL CONT VALVE ENG 3
4) 6L13, FUEL CONT VALVE ENG 4
5) 6E3, PRIM LE FLAP CONT A-AC
6) 6E4, PRIM LE FLAP CONT A-DC
7) 6E5, PRIM LE FLAP CONT B-AC
8) 6E6, PRIM LE FLAP CONT B-DC
9) 6L20, TE FLAP ELEC CONT INBD
10) 6L19, TE FLAP ELEC CONT OTBD
(b)
P7, Overhead Circuit Breaker Panel
1) 7A3, AURAL WARN L
2) 7A4, AURAL WARN R
3) 7C18, LWR YAW DAMPER
4) 7C9, UPR YAW DAMPER
5) 7D13, FLT CONT CMPTR SERVO L
6) 7D8, FLT CONT CMPTR PWR L
7) 7D12, FLT CONT CMPTR SERVO C
8) 7D13, FLT CONT CMPTR PWR C
9) 7D14, FLT CONT CMPTR SERVO R
10) 7D15, FLT CONT CMPTR PWR R
11) 7C10, FLT CONT ELEC 2L-AC
12) 7C11, FLT CONT ELEC 2L-DC
13) 7C12, FLT CONT ELEC 1L-AC
14) 7C13, FLT CONT ELEC 1L-DC
15) 7C14, FLT CONT ELEC 1R-AC
16) 7C15, FLT CONT ELEC 1R-DC
17) 7C16, FLT CONT ELEC 2R-AC
18) 7C17, FLT CONT ELEC 2R-DC
19) 7D18, AILERON LOCKOUT
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S 864-021
(10)
Supply electrical power (AMM 24-22-00/201).
S 864-022
(11)
Pressurize hydraulic systems No. 1 and 4 (AMM 29-11-00/201).
S 874-039 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
(12)
Move the flap control lever forward and aft to bleed the hydraulic system.
S 864-040
(13)
Put the flap control lever in the UP detent to retract the flaps. S 794-024
(14)
Examine the flap power package for hydraulic leaks.
S 714-025
(15)
Do the adjustment for the flap power package (AMM 27-51-09/501). NOTE: You will attach the flap torque tubes (13) during the flap
____
power package adjustment.
G. Put the Airplane Back to Its Usual Condition. S 864-041
(1) Release the pressure in the hydraulic systems (AMM 29-11-00/201).
S 094-026 WARNING: CAREFULLY DO THE SPECIFIED TASK TO REMOVE THE DOOR LOCKS FROM
_______ THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Remove the door locks from the doors for the body landing gear (AMM 32-00-30/201).
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(3) S 614-028Fill the hydraulic reservoirs (AMM 12-12-01/301).
(4) S 864-029Remove the electrical power (AMM 24-22-00/201).
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