S 864-016

 (12)
 Move the trailing edge flaps with the electric drive motor until the No. 4 ballscrew nut is the X1 dimension plus 2.85 to 3.00 inches from the upstop.

 S 824-042

 (13)
 Push in stall warning switch at least 0.050 inch to open the switch before adjusting it away from its actuating cam.

 S 824-017

 (14)
 Adjust the stall warning switch away from its actuating cam until the switch operates.

 (a)
Use an ohmmeter to find the point where the switch operates.

 NOTE: There will be continuity through the switch when the
____ switch operates. You must move the switch away from the cam at the operation point. The pin numbers at D4514J plug to check for switch continuity are 24 and 37. Normally, there is continuity through the switch at flaps up position (i.e. switch plunger fully extended).
 S 864-018
 (15)
 Move the trailing edge flaps with the electric motor until the No. 4 ballscrew nut moves X1 dimension plus 3.50 to 3.75 inches from the trailing edge flap up position.

 S 864-028

 (16)
 Make sure the switch does not operate.

 (a)  
Use an ohmmeter to make sure there is no continuity through the switch.

 S 864-019
 (17) Put the alternate flap control switch to the UP position to retract the trailing edge flaps. Hold the switch in this position until the trailing edge flap motor stops.
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737-300/400/500MAINTENANCE MANUAL
 S 864-020
 (18)
 Make sure the stall warning switch does operate.

 (a)  
Use an ohmmeter to make sure there is continuity through the switch.

 S 724-039
 (19)
 Use the wrench set to tighten the switch retaining nuts.

 (a)  
Make sure the switch adjustment does not change when you tighten the nuts.

 (b)  
Install lockwire on the switch retaining nuts.

 S 414-040
 (20)
 Install the switch cover on the flap control unit (Fig. 401):

 (a)  
Apply a thin layer of the grease to the switch cover.

 (b)  
Install the switch cover.

 S 864-041
 (21)
 Do this task:  "Inboard Flap Track Fairing Installation" (AMM 27-51-32/401).

 S 864-021

 (22)
 Pressurize hydraulic system B (AMM 27-81-00/201).

 S 864-022

 (23)
 Put the alternate flap control switch to the OFF position.

 S 864-023
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LEADING
_______ EDGE CONTROL SURFACES. THE LEADING EDGE CONTROL SURFACES WILL RETRACT. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (24)
 Put the alternate flap arm switch to the OFF position.

 (25)
 Release pressure from hydraulic system B (AMM 27-81-00/201).

 (26)
 Remove electrical power (AMM 24-22-00/201).

 S 864-024
 S 864-025
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
 LEADING EDGE FLAPS AND SLATS POSITION INDICATION MODULE - 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 flaps and slats position indication module (referred to as the indication module in this procedure).
 NOTE: Trobleshooting for the Leading Edge Flap and Slat Indication
____
 Module (FSIM) is found in AMM 27-88-00/101.

 B.  The indication module, M229, is found in the electrical/electronic compartment on the equipment rack E3-2.
　
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