27-51-74
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 FLAP CONTROL 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 flap control quadrant.
 TASK 27-51-77-004-001
 2.  Flap Control Quadrant Removal
_____________________________
 A.  References
 (1)  
25-27-15/401, Carpets

 (2)  
25-52-65/401, Cargo Compartment Ceiling Lining

 (3)  
27-51-74/401, Flap Control Unit

 (4)  
53-21-00/401, Passenger Cabin Floor

 B.  
Access

 (1)  
Location Zone
 202 Lower Nose Compartment
 218 Aft Cargo Compartment

 (2)  
Access Panels
 1103L Forward Access Door

 C.  
Prepare for the Removal

 S 014-002
 (1)  
Get access to the flap control quadrant through the passenger cabin floor or through the aft cargo compartment:

 (a)  
Get access to the control quadrant through the passenger cabin floor: 1) Do this task to remove the carpet over the floor panel:

 "Carpet Removal" (Ref 25-27-15/401).
 NOTE: The floor panel is 60 inches long and starts
____ 14 inches forward of the flap control quadrant.
 2)  Do this task to remove the floor panel above the quadrant: "Passenger Cabin Floor Panel Removal" (Ref 53-21-00/401).
 (b)  Get access to the control quadrant through the aft cargo compartment: 1) Do this task to remove the forward right ceiling panel in
 the aft cargo compartment: "Cargo Compartment Ceiling Lining Removal" (Ref 25-52-65/401).
 S 864-003
 (2)  
Do this task: "Hydraulic System B Pressurization"
 (Ref 27-51-00/201).

 (3)  
Put the flap control lever in the UP detent to retract the flaps.

 S 864-028
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A 737-300/400/500MAINTENANCE MANUAL
SEE A
CABLE WFA (LOWER GROOVE)  QUADRANT STOPS QUADRANT SEGMENT SHAFT CABLE WFB (UPPER GROOVE) 
QUADRANT SUPPORT 

SCREWS (8 LOCATIONS) 
WHEEL WELL CEILING  INBD  FWD  BOLTS (3 LOCATIONS) 
A 

Flap Control Quadrant Installation
Figure 401

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 864-004
 (4)  
Do this task: "Hydraulic System B Depressurization" (Ref 27-51-00/201).

 S 034-005

 (5)
Do this task: "Flap Control Unit Removal" (Ref 27-51-74/401).

 S 014-006

 (6)  
Open the forward access door 1103L.

 D.
Remove the Flap Control Quadrant

 S 034-007
 (1)  
Disconnect the WFA and WFB cables (Fig. 401):

 (a)  
Remove the turnbuckle lock clips and disconnect the WFA and WFB turnbuckles.

 (b)  
Install clamps on the cables.

 (c)  
Install a tag on the cables to identify them.

 (d)  
AIRPLANES WITH A ONE PIECE WFA/B-2 CABLE; Remove the straps that attach the cable to the quadrant.

 (e)  
Disconnect the cables from the flap control quadrant.

 (f)  
Install clamps on the cables.

 S 024-008
 (2)  
Remove the flap control quadrant:

 (a)  
If the access is through the aft cargo compartment, remove the quadrant segment: 1) Remove the bolt that attaches the quadrant segment to the
　
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