S 714-018

 (6)  
Put the thrust levers in the idle position.

 (a)  
Make sure the speed brake lever moves to the UP position.

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747-400 MAINTENANCE MANUAL
 S 714-019
 (7)  
Put the speed brake lever in the DOWN position.

 (a)  
Make sure the actuator goes to the retracted position.

 G.
Put the Airplane Back to Its Usual Condition

 S 864-022
 (1)
Do this task: "Remove Hydraulic Power" (AMM 29-11-00/201).

 S 864-020

 (2)
Do this task: "Remove Electrical Power" (AMM 24-22-00/201).

 S 414-026

 (3)  
Install the third center ceiling panel that were removed (AMM 25-59-01/401).

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747-400 MAINTENANCE MANUAL
 SPEED BRAKE SEQUENCE MECHANISM QUADRANT - REMOVAL/INSTALLATION
______________________________________________________________
 1.  General_______
 A.  There are two tasks in this procedure. There is a task for the removal and a task for the installation of the speed brake sequence mechanism quadrant.
 (1)  
The removal procedure has these parts:

 (a)  
The installation of the landing gear door locks

 (b)  
The removal of the speed brake sequence mechanism

 (c)  
The removal of the cables from the quadrant

 (d)  
The removal of the quadrant.

 (2)  
The installation procedure has these parts:

 (a)  
The installation of the quadrant

 (b)  
The installation of the cables on the quadrant

 (c)  
An adjustment of the cables

 (d)  
The installation of the speed brake sequence mechanism

 (e)  
The removal of the landing gear door locks.

 TASK 27-62-13-004-001
 2.  Speed Brake Sequence Mechanism Quadrant Removal (Fig. 401)_______________________________________________
 A.  References
 (1)  
27-62-06/401, Speed Brake Sequence Mechanism

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

 (3)  
IPC 27-62-15 Fig. 1

 B.  
Access

 (1)  
Location Zone
 136 Wing Landing Gear Well, RH

 C.  
Prepare for the Removal

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

 S 864-002
 S 494-003
 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: "Wing Landing Gear Door Lock Installation" (Ref 32-00-30/201).
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 S 014-005
 (3)  
Do this task: "Speed Brake Sequence Mechanism Removal" (Ref 27-62-06/401).

 D.
Remove the Quadrant

 S 034-018
 (1)  
Remove the speed brake cables SBA and SBB from the quadrant (Fig. 401):

 (a)  
Disconnect the cables at the turnbuckles.
　
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