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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (6)  S 864-015Remove the DO-NOT-CLOSE tags and close all the circuit breakers for the landing gear on the circuit breaker panel, P6.
 (7)  S 864-016Supply electrical power (AMM 24-22-00/201).
 (8)  S 714-017Look at the indicator lights for the landing gear, in the flight compartment, above the landing gear lever. (a) Make sure that all the green lights are on. (b) Make sure the red lights are not on. (c) Make sure the aural warning did not come on.
 (9)  S 864-018Remove electrical power if it is not necessary (AMM 24-22-00/201).

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 32-61-31
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 NOSE GEAR LOCK SENSOR - REMOVAL/INSTALLATION
____________________________________________
 1.  General_______
 A.  This procedure has two tasks. These tasks remove and install the nose gear lock sensor.
 B.  The sensor is on the lock brace for the nose gear.
 TASK 32-61-41-004-001
 2.  Remove the Nose Gear Lock Sensor________________________________
 A.  Special Tools and Equipment
 (1)  
Ground Locks - F72735 (Ref 32-00-01)

 B.  
References

 (1)  
32-00-01/201, Ground Locks

 C.  
Access

 (1)  
Location Zones
 203 Nose Wheel Well
 204 Nose Landing Gear

 D.  
Procedure (Fig. 401)

 S 864-002
 (1)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
AURAL WARNING

 (b)  
GEAR SWITCH & ANTISKID TEST

 (c)  
LIGHTS

 S 864-003
 (2)  
Make sure the ground locks for the landing gear are installed (Ref 32-00-01).

 S 034-004

 (3)  
Do these steps to disconnect the sensor wires:

 (a)  
Open the access door for the electronic equipment center, 1201.

 (b)  
Go through the electronic center to the area on the aft right corner of the nose well well.

 (c)  
Find the wire splices, SP374 and SP376 (Fig. 401).

 (d)  
Put tags on the wires to help you connect the wires correctly during the installation.

 (e)  
Open the applicable splices and disconnect the wires.

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 32-61-41
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
LOCK SENSOR 
TARGET 
SENSOR  FWD 
LOCK BRACE 
NUT 
WASHER 
SHIMS  SENSOR 
FLANGE 
CONDUIT 
0.05 |0.01 INCH 
CLEARANCE 
TARGET 
LOCK BRACE 
SENSOR 

Nose Gear Lock Sensor Installation
Figure 401 (Sheet 1)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

737-300/400/500
MAINTENANCE MANUAL

CONDUIT 
SENSOR 
SPLICE AREA AND 
GROUND STUD ARE 
BEHIND THE 
PRESSURE SEAL 
PRESSURE 
SEAL 
LOCK BRACE 

Nose Gear Lock Sensor Installation
Figure 401 (Sheet 2)

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