(15)
 Fill the hydraulic reservoirs if it is necessary (Ref 12-12-00/301).

 S 614-020
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A
737-300/400/500MAINTENANCE MANUAL
 LEADING EDGE FLAP AND SLAT CONTROL VALVE - 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 leading edge flap and slat control valve (referrred to as the control valve).
 B.  The leading edge flap and slat control valve is attached to the flap control unit forward of the trailing edge flap control valve.
 TASK 27-81-81-004-001
 2.  Leading Edge Flap and Slat Control Valve Removal________________________________________________
 A.  References
 (1)  
27-81-00/201, Leading Edge Flap and Slat Control System

 B.  
Access

 (1)  
Location Zone
 217 Main Wheel Weel, RH

 C.  
Prepare for the Removal

 S 864-013
 (1)  
Pressurize hydraulic system B (Ref 27-81-00/201).

 S 864-014

 (2)  
Put the flap control lever to the FLAP UP detent.

 S 864-015

 (3)
Release the pressure from hydraulic system B (Ref 27-81-00/201).

 S 034-016

 (4)  
Remove the lower pan from the flap control unit.

 S 494-017

 (5)  
Install the rig pin F-1 through the follower arm and valve cam (Fig. 401).

 D.  
Remove the Leading Edge Flap and Slat Control Valve

 S 024-018
 (1)  
Remove the control valve (Fig. 401):

 (a)  
Disconnect the rod end from the link assembly (Fig. 401).

 CAUTION:_______DO NOT LET HYDRAULIC FLUID GET ON EQUIPMENT. IF HYDRAULIC FLUID GETS ON EQUIPMENT, IMMEDIATELY CLEAN IT FROM THE EQUIPMENT. HYDRAULIC FLUID CAN CAUSE DAMAGE TO EQUIPMENT.

 (b)  
Put a container below the control valve to catch the hydraulic fluid.

 (c)  
Disconnect the hydraulic lines from the control valve.

 (d)  
Install caps on all ports and plugs in the hydraulic lines.

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A

737-300/400/500
MAINTENANCE MANUAL

SEE A
FLAP CONTROL QUADRANT QUADRANT SEE CSTOP
TRAILING EDGE VALVE FLAP CONTROL 
SEE  B  LEADING EDGE CONTROL VALVE FLAP AND SLAT 
NOTE:  FLAP CONTROL UNIT SHOWN WITH LOWER PAN REMOVED  A  FWD 
Leading Edge Flap and Slat Control Valve Installation Figure 401 (Sheet 1) 

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A
737-300/400/500MAINTENANCE MANUAL
RIG PIN F-1
CAM FOLLOWER
CAM
1.00 INCH MAX
FWD
LEADING EDGE LINK
TRAILING EDGE
LEADING EDGE CAM LINK
FLAP CONTROL VALVE
B
ROD END
LINK ASSEMBLY
C
Leading Edge Flap and Slat Control Valve Installation Figure 401 (Sheet 2)
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