(2)  
32-00-30/201, Landing Gear Door Locks

 B.  
Access

 (1)  
Location Zone
 135 Left Wing Landing Gear Wheel Well
 136 Right Wing Landing Gear Wheel Well
 575 Spoiler No. 5
 675 Spoiler No. 8

 (2)  
Access Panel
 572FB Access Panel - Trailing Edge Lower, LH
 672FB Access Panel - Trailing Edge Lower, RH

 C.  
Procedure

 (1)  
Make sure the landing gear ground locks are installed.

 S 862-002
 S 492-003
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  Do this task: "Installation of the Door Locks on the Wing Landing Gear" (Ref 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400 MAINTENANCE MANUAL
 S 862-004
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (3)  Do this task to pressurize hydraulic system No. 4: "Hydraulic System Pressurization" (Ref 29-11-00/201).
 S 862-029
 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.
 (4)  
Put the flap control lever in the 30-unit detent to extend the flaps.

 S 862-006

 (5)  
Do this task to depressurize hydraulic system No. 4: "Hydraulic System Depressurization" (Ref 29-11-00/201).

 S 012-007

 (6)  
Open the access panel (572FB, left wing; 672FB, right wing) below the spoiler control package on the lower surface of the wing.

 S 032-008

 (7)  
Loosen the spoiler control cables WS2A and WS2B at turnbuckles in the wing gear wheel well (Fig. 201).

 S 032-009

 (8)  
Remove the cables from the quadrant.

 (9)  
Remove the inboard flight spoiler quadrant:

 S 022-010
 CAUTION: YOU MUST NOT CHANGE THE LENGTH OF THE INPUT ARM ROD WHILE
_______ IT IS DISCONNECTED. YOU CAN CAUSE DAMAGE TO EQUIPMENT.
 (a)  
Disconnect the input arm rod from the quadrant lever.

 (b)  
Disconnect the ratio changer linkage from the mounting bracket and the actuator.

 (c)
Remove the bolt and remove the quadrant from the mounting bracket.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
MAINTENANCE MANUAL

SEE A
SEE B
SPOILER
HINGE

SPOILER CONTROL PACKAGE (REF)
INPUT ARM ROD
QUADRANT
LEVER
ATTACH BOLT CABLE
QUADRANT
AB E
D D
B
C A
SHEAR
RIVETS
C
INBD FWD  RIG PIN A/S-21
RATIO CHANGER (A/S-19 LEFT)
E
QUADRANT LINKAGE
RATIO
MOUNTING
CHANGER
BRACKET
ACTUATOR
INBOARD FLIGHT SPOILER NO. 8 CONTROL PACKAGE SHOWN, SPOILER NO. 5 EQUIVALENT
A
Inboard Flight Spoiler Quadrant Installation Figure 201 (Sheet 1)
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