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A
747-400 MAINTENANCE MANUAL
SEE A ALTERNATE LIMIT SWITCH PACK
INBOARD TE FLAP
POWER PACKAGE
A BOLT
(2 LOCATIONS)
SEE B
A
RVDT WASHER (2 LOCATIONS)
A
NOTE: THE INBOARD ALTERNATE LIMIT SWITCH PACK IS SHOWN. THE OUTBOARD ALTERNATE LIMIT SWITCH PACK IS EQUIVALENT.
Alternate Limit Switch Pack Adjustment Figure 501 (Sheet 1)
F05002
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A
747-400
MAINTENANCE MANUAL
VIEW
Alternate Limit Switch Pack Adjustment
Figure 501 (Sheet 2)
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H91069
A 747-400 MAINTENANCE MANUAL
4) Lock wire the adjustment screws.
(5) S 865-023AIRPLANES WITHOUT SWITCH PACK ADJUSTMENT SCREWS; make sure that the position indication line in the view window is in the tolerance band shown in Fig. 501 (View B-B). (a) If the indication line is not in the tolerance band, adjust the switch pack: 1) Remove the lock wire from the switch pack bolts. 2) Loosen the bolts at the switch pack base. 3) Push on the switch pack.
NOTE:____ This will disengage the switch spring lock from the power drive unit.
4) 5) 6) Turn the switch pack to match the line on the indicator and the line on the window.Tighten the bolts at the switch pack base.Lock wire the bolts.
(6) S 865-020Do the steps to make sure the TE flaps operate in the alternate electric mode (AMM 27-51-00/501).
(7) S 865-021Do this task: "Removal of the Door Locks from the Body Landing Gear" (AMM 32-00-30/201).
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747-400
MAINTENANCE MANUAL
FLAP CONTROL ASSEMBLY - REMOVAL/INSTALLATION
____________________________________________
1. General
_______
A. The flap control assembly is a mechanical device which is used to control the flap movement during the flap extension or retraction. The flap control assembly is one of the components of the trailing edge (TE) flap power package.
B. There are two tasks in this procedure. There is one task for the removal and one task for the installation of the inboard and outboard flap control assemblies. If it is possible, remove the flap control assembly with the flaps retracted. If you must remove the assembly with the flaps extended, install a TE flap lock on the flap carriages.
TASK 27-51-19-004-001
2. Flap Control Assembly Removal_____________________________
A. References
(1)
AMM 27-51-10/201, Flap Control Module
(2)
AMM 27-51-18/401, Limit Switch Pack
(3)
AMM 27-58-01/401, Flap Position Transmitter
(4)
AMM 29-11-00/201, Main Hydraulic Supply System
(5)
AMM 32-00-30/201, Landing Gear Door Locks
B.
Access
(1)
Location Zone
137 Body Landing Gear Well, LH
138 Body Landing Gear Well, RH
C.
Prepare for the Removal
