(d)  
Install dust caps on the electrical connectors.

 (e)  
Remove the glide slope antenna.

 TASK 34-31-21-404-029
 3. Glide Slope Antenna Installation (Fig. 401)
________________________________
 A. General
 (1)  The glide slope antenna (M40) is installed in the nose radome (Fig. 401).
 B. Consumable Materials
 (1)  G00009 Corrosion Preventive Compound (Dow Corning No. 4) - BMS 3-23
 C. References
 (1)  
SWPM 20-20-00, Standard Wiring Practices Manual

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 34-31-00/501, VOR/ILS Navigation System

 (4)  
AMM 34-31-02/501, VOR/ILS Navigation System

 (5)  
AMM 51-21-31/701, Corrosion Removal and Control

 (6)  
AMM 53-52-00/401, Nose Radome

 (7)  
SRM 51-20-01

 D. Access
 (1)  Location Zone
 201 Nose Radome

 E. Procedure
 S 114-027
 WARNING: MAKE SURE THE WEATHER RADAR POWER IS OFF AND THE ANTENNA CANNOT
_______ MAKE A SCAN. IF THE WEATHER RADAR TRANSMITS OR MAKES A SCAN, INJURY TO PERSONS CAN OCCUR.
 (1)  
Do this task to clean the airplane surface: Aluminum Corrosion Removal (AMM 51-21-31/701).

 S 394-013

 (2)  
Apply a layer of BMS 3-23 corrosion-preventive compound to the mating surfaces of the antenna and the airplane structure (SRM 51-20-01).

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A 737-300/400/500MAINTENANCE MANUAL
 (3)  S 424-010Install the glide slope antenna: (a) Remove the dust caps from the electrical connectors. (b) Connect the coaxial cables to the glide slope antenna. (c) Align the glide slope antenna to the screw holes that hold the antenna to the bulkhead. (d) Install the screws to attach the glide slope antenna to the bulkhead.
 (4)  S 224-000Do this task to do a check of the resistance between the antenna base and the airplane skin: Electrical Bonding Check (SWPM 20-20-00). (a) Make sure the resistance is not more than 0.001 ohms.
 (5)  S 714-021Do the Glide Slope Test part of the VOR/ILS System Test to make sure the antenna operates correctly (AMM 34-31-00/501, AMM 34-31-02/501).
 (6)  S 414-010Close the nose radome (AMM 53-52-00/401).
 (7)  S 864-026If electrical power is not necessary, do this task to remove electrical power: Manual Control (AMM 24-22-00/201).

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A 737-300/400/500MAINTENANCE MANUAL
SEE  A  AND  B  AIRPLANE  MOUNTING SCREW 
GLIDE SLOPE ANTENNA MOUNTING BRACKET 
GLIDE SLOPE ANTENNA 
ANTENNA CABLES 
A  FWD 

GLIDE SLOPE ANTENNA DIRECTOR BAR
B

Glide Slope Antenna Installation
Figure 401

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A
737-300/400/500MAINTENANCE MANUAL
 LOCALIZER ANTENNA - REMOVAL/INSTALLATION
________________________________________
 1.  General
_______
 A.  This subject has two tasks. The first task is the removal of the localizer antenna. The second task is the installation of the localizer antenna and a test of the localizer antenna.
 TASK 34-31-31-004-001
 2.  Localizer Antenna Removal (Fig. 401)
_________________________
 A.  General
 (1)  The localizer antenna (M1102) is installed in the nose radome (Fig. 401).
　
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