S 024-004
(4)
Remove the alternate limit switch pack:
(a)
Disconnect the applicable electrical connector DS2102 (inboard power package) or DS2103 (outboard power package).
(b)
Remove the two bolts and washers which attach the alternate limit switch pack to the power package.
(c)
Remove the alternate limit switch pack from the power package.
TASK 27-51-18-404-005
3. Alternate Limit Switch Pack Installation (Fig. 401)
________________________________________
A. References
(1)
27-51-00/501, Trailing Edge Flaps
(2)
32-00-30/201, Landing Gear Door Locks
(3)
IPC 27-51-09 Figs. 1 and 3
B.
Access
(1)
Location Zone
137 Body Gear Wheel Well, LH
138 Body Gear Wheel Well, RH
C.
Procedure
S 864-014
(1) Make sure the trailing edge flaps are fully retracted.
S 424-006
CAUTION: DO NOT TURN THE INPUT GEAR OF THE LIMIT SWITCH PACK BEFORE YOU
_______ INSTALL IT. THE INPUT SHAFT IS MECHANICALLY LOCKED IN THE 0 DETENT POSITION UNTIL YOU INSTALL IT. YOU CAN CAUSE DAMAGE TO THE LIMIT SWITCH PACK.
(2)
Install the alternate limit switch pack:
(a)
Put the alternate limit switch pack into the power package.
1) It can be necessary to turn the switch pack to get the gears to engage.
(b)
Install the two bolts and washers.
(c)
Tighten the bolts.
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A
747-400 MAINTENANCE MANUAL
(3) S 824-008Do this task: "Alternate Limit Switch Adjustment" (AMM 27-51-18/501).
(4) S 434-008Connect the applicable electrical connector DS2102 (inboard power package) or DS2103 (outboard power package).
(5) S 734-009Do the steps to make sure the TE flaps operate in the alternate electric mode (AMM 27-51-00/501).
S 094-012
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW 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 OR DAMAGE TO EQUIPMENT.
(6) Do this task: "Removal of the Door Locks from the Body Landing Gear" (Ref 32-00-30/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
ALTERNATE LIMIT SWITCH PACK - ADJUSTMENT/TEST
_____________________________________________
1. General_______
A. This procedure contains the task for the Alternate Limit Switch Pack Adjustment
TASK 27-51-18-825-013
2. Alternate Limit Switch Pack - Adjustment________________________________________
A. References
(1)
AMM 27-51-00/501, Trailing Edge Flaps
(2)
AIPC 27-51-09, Figs. 1
(3)
AIPC 27-51-09, Figs. 3
B.
Access
(1)
Location Zone
137 Body Gear Wheel Well, LH
138 Body Gear Wheel Well, RH
C.
Procedure
S 865-018
(1) Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
S 865-014
(2) Make sure the trailing edge flaps are fully retracted.
S 865-019
(3) Do this task: "Trailing Edge Flaps Deactivation" (AMM 27-51-00/201).
S 865-024
(4) AIRPLANES WITH SWITCH PACK ADJUSTMENT SCREWS; make sure that the position indication line in the view window is in the tolerance band shown in Fig. 501 (Detail C). (a) If the indication line is not in the tolerance band, adjust the switch pack: 1) Loosen the two adjustment set screws. 2) Turn the fine adjustment screw until the indication line is in the tolerance band.
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