F.
Put the Airplane Back to Its Usual Condition

 S 862-020
 (1)  Do this task to depressurize hydraulic system No.4: "Hydraulic System Depressurization" (AMM 29-11-00/201).
 S 092-013
 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 (Ref 32-00-30/201).
 TASK 27-61-08-302-015
 4.  Quadrant Repairs (Fig. 201)________________
 A. General
 (1)  
The repair procedure includes the replacement of the rivets in the controlled shear joint of the quadrant.

 B.
Standard Tools and Equipment

 (1)  
Rivet - MS20470AD5 (optional to BACR15BB5AD)

 C.
Access

 (1)  
Location Zone
 585 Spoiler No. 1
 584 Spoiler No. 2
 583 Spoiler No. 3
 582 Spoiler No. 4
 682 Spoiler No. 9
 683 Spoiler No. 10
 684 Spoiler No. 11
 685 Spoiler No. 12

 D.
Procedure

 (1)  
Remove the outboard flight spoiler input quadrant.

 S 022-016
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 352-017
 (2)  Repair the quadrant.
 CAUTION:_______DO NOT MAKE THE RIVET HOLES LARGER. YOU WILL CAUSE DAMAGE TO THE QUADRANT.
 (a)  
Remove the broken parts of the rivets from the holes in the crank and the quadrant.

 (b)  
Install new shear rivets.

 NOTE: See the aluminum foil marker on the quadrant or Fig. 201
____
 for the correct rivets.

 (c)  
Make sure the new rivet heads are 0.06-0.07 inch(1.52-1.77mm) thick.

 (d)  
Examine the aluminum foil marker on the quadrant.
 1) Replace the marker if it is damaged or not there.

 (3)  
Install the flight spoiler input quadrant.

 S 422-018
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 ALL  ú ú 05 Page 208 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 INBOARD FLIGHT SPOILER RATIO CHANGER ACTUATOR - REMOVAL/INSTALLATION
____________________________________________________________________
 1.  General_______
 A.  There are two tasks in this procedure. There is one task for the removal and one task for the installation of a ratio changer actuator for the inboard flight spoilers.
 TASK 27-61-13-004-001
 2.  Ratio Changer Actuator Removal (Fig. 401)______________________________
 A.  References
 (1)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (2)  
AMM 24-22-00/201, Manual Control

 B.  
Access

 (1)  
Location Zone
 575 Spoiler No. 5
 675 Spoiler No. 8

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

 C.  
Prepare For The Removal

 S 864-002
 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.
 (1)  
If the inboard flight spoilers are extended, do this task to pressurize hydraulic systems No. 1 and 4: "Hydraulic System Pressurization" (AMM 29-11-00/201).

 (2)  
Put the speed brake control lever in the DOWN position.

 S 864-004

 (3)
　
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