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A
747-400 MAINTENANCE MANUAL
 S 414-107
 (7) Close the radome (AMM 53-52-01/201).
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747-400 MAINTENANCE MANUAL
 WEATHER RADAR RECEIVER/TRANSMITTER MOUNT - REMOVAL/INSTALLATION
_______________________________________________________________
 1.  General
_______
 A.  PASSENGER AIRPLANES; This subject has two tasks. The first task is for the removal of the weather radar receiver/transmitter mount (R/T mount). The second task is the installation of the R/T mount. The removal has these parts:
 (1)  
Remove the left receiver/transmitter

 (2)  
Remove the right receiver/transmitter

 (3)  
Remove the main static inverter.

 (4)  
Remove the R/T mount.

 B.  PASSENGER AIRPLANES;
 Installation has these parts:

 (1)  
Install the R/T mount

 (2)  
Install the left receiver/transmitter

 (3)  
Install the right receiver/transmitter

 (4)  
Do a test of the weather radar system.

 C.  FREIGHTERS; This subject has two tasks. The first task is for the removal of the left or right weather radar receiver/transmitter mount (R/T mount). The second task is the installation of the left or right R/T mount. The removal has these parts:
 (1)  
Remove the left or right receiver/transmitter

 (2)  
Remove the left or right R/T mount.

 D.  FREIGHTERS;
 Installation has these parts:

 (1)  
Install the left or right R/T mount

 (2)  
Install the left or right receiver/transmitter

 (3)  
Do a test of the weather radar system.

 TASK 34-43-05-004-001
 2.  PASSENGER AIRPLANES; Receiver/Transmitter Mount Removal (Fig. 401)
__________________________________
 A.  General
 (1)  The R/T mount (B139) is attached to the E30-1 upper shelf on the E30 equipment rack (E30 rack). The E30 rack is in the right crawlway forward of the main equipment center. To remove the R/T mount, you must electrically and mechanically disconnect it from the E30 rack.
 B.  Special Tools and Equipment
 NOTE: Use the correct insertion/extraction tool found in one of the two
____ crimp tool kits shown below. See crimp tool kit connector index
 (1)  Graphic Datakits International, Burndy P/N J1276-1
 Insertion/Extraction Tool

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747-400
MAINTENANCE MANUAL

 (2)  Daniels Mfg. Corporation, Astro P/N ATB3062-2
 Insertion/Extraction tool.

 C. References
 (1)  
AMM 06-09-01/201, Body Section 41 Access Doors and Panels

 (2)  
AMM 24-29-01/401, Main Static Inverter

 (3)  
AMM 34-43-02/401, Weather Radar Receiver/ Transmitter

 (4)  
SWPM 20-20-11

 D. Access
 (1)  
Location Zone
 116 Area Between Nose Gear Well and Fuselage, RH

 (2)  
Access Panel
 117A Electronics Compartment Access Door

 E. Procedure
 S 864-002
 (1)  Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  
P7 Overhead Circuit Breaker Panel
 1) 7C7 WXR L RT
 2) 7C19 WXR R RT

 (b)  
P6 Power Distribution Panel
 1) 6K2 MN BAT CONT INVERTER PWR
 2) 6K5 TRU - CONT INVERTER PWR

 S 014-004
 (2)  
Open the access door to the 117A electronics compartment to get to the R/T mount (AMM 06-09-01/201).
　
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