(f)  
Carefully remove the control valve from the flap control unit.

 TASK 27-81-81-404-003
 3.  Leading Edge Flap and Slat Control Valve Installation (Fig. 401)_____________________________________________________
 A. Special Tools and Equipment
 (1)  Rig Pin, F-1 - 0.311 +0.000/-0.002-inch diameter x 3.40 |0.06-inch length (MS20392-4)
 NOTE: Rig pin is part of kit F70207-83.
____
 B. Consumable Materials
 (1)  
D00196 Fluid - Hydraulic, BMS 3-11

 (2)  
D00567 Lubricant - Skydrol Assembly Lube

 C.
References

 (1)  
12-12-00/301, Hydraulic Reservoir

 (2)  
27-81-00/201, Leading Edge Flap and Slat Control System

 (3)  
27-81-81/501, Leading Edge Flap and Slat Control Valve

 D.
Access

 (1)  
Location Zones
 101 Control Cabin, LH
 102 Control Cabin, RH
 217 Main Wheel Well, RH

 E.
Procedure

 S 424-002
 (1)  
Install the control valve:

 (a)  
Lubricate the O-ring with hydraulic fluid or assembly lube.

 (b)  
Install the union and the O-ring in each port of the control valve.

 (c)  
Carefully install the control valve in the flap control unit.

 (d)  
Install the four bolts.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-81-81
 ALL  ú ú 01 Page 404 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (e)  
Tighten the bolts.

 (f)  
Install lockwire.

 (g)  
Remove the caps from the ports and plugs from the hydraulic lines.

 (h)  
Connect the hydraulic lines to the control valve.

 (i)  
Connect the rod end to the link assembly.

 S 094-004
 (2)  
Remove the rig pin F-1.

 S 864-005

 (3)  
Pressurize hydraulic system B (Ref 27-81-00/201).

 S 864-006

 (4)  
Put the flap control lever to the 10-unit detent to extend the leading edge flaps and slats.

 S 864-007

 (5)  
Move the flap control lever to the FLAP UP detent to retract the flaps and slats.

 S 794-008

 (6)  
Examine the hydraulic lines at the control valve for leakage.

 S 714-009

 (7)  
Adjust and do a test of the control valve (Ref 27-81-81/501).

 F.
Put the Airplane Back to Its Usual Condition

 S 864-010
 (1)  
Release pressure from hydraulic system B (Ref 27-81-00/201).

 (2)  
Fill the hydraulic reservoirs if it is necessary (Ref 12-12-00/301).

 (3)  
Install the lower pan on the flap control unit.

 S 614-011
 S 434-012
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-81-81
 ALL  ú ú 01 Page 405 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 LEADING EDGE FLAP AND SLAT CONTROL VALVE - ADJUSTMENT/TEST
__________________________________________________________
 1.  General_______
 A.  There are two tasks in this procedure. The first task is the adjustment of the leading edge flap and slat control valve (referred to as the control valve). The second task is the test of the control valve.
 TASK 27-81-81-825-012
 2.  Leading Edge Flap and Slat Control Valve Adjustment___________________________________________________
 A.  Special Tools and Equipment
 (1)  Rig pin, F-1 - 0.311 +0.000/-0.002-inch diameter x 3.40 |0.06-inch length (MS20392-4)
 NOTE: Rig pin is part of kit F70207-83.
____
 B.  References
 (1)  
　
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