(b)  
Make sure the green LE FLAPS EXT light, on the P2 panel, comes on when all the slats are fully extended.

 S 865-011
 (4)  
Release pressure from hydraulic system B (Ref 27-81-00/201).

 (5)  
Remove electrical power (Ref 24-22-00/201).

 S 865-012
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 STALL WARNING SWITCH - 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 stall warning switch (includes switch continuity check in both the open and closed positions for correct switch operation).
 TASK 27-88-31-004-005
 2.  Stall Warning Switch Removal (Fig. 401)
____________________________
FLAP  FLAPS 10-DEGREE 
CONTROL  SWITCH, S584 
UNIT  SEE  A 
SWITCH  RETAINING 
COVER  NUTS 
SEE  B 
ROLLER GUIDE  PIN 
(EXAMPLE) 
STALL WARNING 
SWITCH, S856 
FWD  INBD 
INBD 
A  B 
Stall Warning Switch Installation 
Figure 401 (Sheet 1) 

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
SEE C
ASSEMBLY TRANSMISSION FLAP  UPSTOP  DOWNSTOP  DOWNSTOP 
JACKSCREW 
FWD  (EXAMPLE) D C BALL-SCREW NUT UPSTOP SEE UPSTOP (BALL-SCREW NUT) UPSTOP (SCREW YOKE) 
DIMENSION "X" 
D 
Figure 401 (Sheet 2) Stall Warning Switch Installation 

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
 A.
B.
C.
A
737-300/400/500MAINTENANCE MANUAL
Access
 (1)  
Location Zone 217 Main Wheel Well, RH

Special Tools and Equipment

 (1)
F80197-5 Wrench SetProcedure

 S 864-001

 (1)  
Open this circuit breaker and attach a DO-NOT-CLOSE tag:

 (a)  
P6-2 Circuit Breaker Panel
 1) LE FLAP POS IND DC

 S 864-032
 (2)  
Do this task: "Trailing Edge Flap System Deactivation" (AMM 27-51-00/201).

 S 034-043

 (3)  
Remove the switch cover from the flap control unit (Fig. 401).

 S 034-033

 (4)  
Disconnect the elctrical wires from the switch.

 (a)  
Disconnect the two wire bundle connector from the receptacles.

 (b)  
Remove the two support clamps for the wire bundle.

 S 034-034
 (5)  Cut the wire bundle ties and isolate the switch wires from the remaining wires inthe bundle.
 NOTE: The switch wires for all but the flaps 10-degree switch make
____ one wire bundle and must be isolated to remove the switch.
 S 024-031
 (6)  
Use the wrench set to remove the stall warning switch.

 (7)  
Remove the switch leads from the connector.

 (8)  
Remove the stall warning switch:

 S 034-002
 S 024-006
 NOTE: Put the retaining nuts, the roller guide, and the pin on the
____
 switch to keep the parts together.

 (a)  Remove the pin to release the switch roller guide.
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