(c)  
Remove the switch.

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A 737-300/400/500MAINTENANCE MANUAL
 TASK 27-51-97-404-005
 3. Flap Control Cable Tension Switch Installation
______________________________________________
 A. Consumable Materials
 (1)
C00528 Corrosion Preventive Compound - MIL-C-16173, Grade 2

 B.
References

 (1)  
SWPM 20-20-00, Standard Wiring Practices Manual

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

 C.
Access

 (1)  
Location Zone
 218 Aft Cargo Compartment

 D.
Procedure

 S 424-006
 (1)
Install the flap control cable tension switch (Fig. 401):

 (a)  
Install the switch on the mounting bolts.

 (b)  
Apply a layer of the corrosion preventive compound to the mounting bolts.

 (c)  
Install the washers and nuts.

Flap Control Cable Tension Switch 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 764-007
 (2)  Do this task: "Do a Check of the Electrical Bonding" (SWPM 20-20-00).
 NOTE: The bonding resistance must be less than 0.0025 ohm.
____
 S 434-008
 (3)  Connect the wires at the splices near the switch.
 TASK 27-51-97-724-009
 4. Operational Check - Flap Control Cable Tension Switch
_____________________________________________________
 A. Standard Tools and Equipment
 (1)  
0.040 inch thick SAE 1020 steel sheet (1.5 x 3.0 inch)

 B.
References

 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 27-51-00/201, Trailing Edge Flap Systems

 C.
Access

 (1)  
Location Zone
 218 Aft Cargo Compartment

 D.
Procedure

 S 864-010
 (1)  
Do this task: "Hydraulic System B Pressurization"
 (AMM 27-51-00/201).

 S 864-011

 (2)
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).

 S 724-012

 (3)  
Do the switch test during the flap extension:

 (a)  
Put the flap control lever in the 15-unit detent.

 (b)  
During the flap extension, put the 0.04 inch thick steel sheet between the switch and the magnet.

 (c)  
Make sure the bypass valve indicator moves to position 2.

 NOTE: The TE flap bypass valve is installed on the aft
____ bulkhead of the right main gear wheel well. The indicator is on the valve.
 (d)  
Make sure the movment of the flaps stops.

 (e)  
Remove the steel sheet from the switch.

 (f)  
Make sure the bypass valve indicator moves to the position 1.

 (g)  
Make sure the flaps move to the 15-unit position.

 S 724-013
 (4)  
Do the switch test during the flap retraction:

 (a)  
Put the flap control lever in the UP detent.

 (b)  
During the flap retraction, put the steel sheet between the switch and the magnet.

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A 737-300/400/500MAINTENANCE MANUAL
 (c) (d) (e) (f) (g)  Make sure the bypass valve indicator moves to the position 2.Make sure the flap movement stops.Remove the steel sheet from the switch.Make sure the bypass valve indicator moves to the position 1.Make sure the flaps move to the retracted position.
　
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