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 1.  General_______
 A.  This subject has two tasks. The first task is to remove the weather radar (WXR) receiver/transmitter (R/T). The second task is to install the WXR R/T.
 B.  The R/T is found in the forward nose compartment. To get access to the R/T it is necessary to go through the access door for the lower nose compartment.
 TASK 34-41-41-024-001
 2.  Receiver/Transmitter Removal____________________________
 A.  References
 (1)  20-10-07/201, E/E Rack Mounted Components
 B.  Access
 (1)  Location Zone
 102 Lower Nose Compartment

 C.  Procedure
 S 864-063
 (1)  AIRPLANES WITH SPERRY PRIMUS 90 WEATHER RADAR SYSTEMS; Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  P6 Load Control Center - Right
 1) WEATHER RADAR AC
 2) WEATHER RADAR DC

 S 864-019
 (2)  AIRPLANES WITH COLLINS WXR-700X WEATHER RADAR SYSTEMS; Open this circuit breaker and attach a DO-NOT-CLOSE tag:
 (a)  P6 Load Control Center - Right
 1) WEATHER RADAR R/T

 S 024-012
 (3)  Do this task to remove the WXR R/T: Remove the Rack Mounted E/E Box (Ref 20-10-07/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 434-013
 (4)  Install dust caps on the electrical connectors.
 TASK 34-41-41-424-004
 3. Receiver/Transmitter Installation
_________________________________
 A. References
 (1)  
20-10-07/201, E/E Rack Mounted Components

 (2)  
24-22-00/201, Manual Control

 (3)  
34-41-00/501, Weather Radar System

 (4)  
34-41-02/501, Weather Radar System

 B. Access
 (1)  Location Zone
 102 Lower Nose Compartment

 C. Procedure
 S 864-047
 (1)  AIRPLANES WITH SPERRY PRIMUS 90 WEATHER RADAR SYSTEMS; Make sure these circuit breakers are open with DO-NOT-CLOSE tags attached:
 (a)  P6 Load Control Center - Right
 1) WEATHER RADAR AC
 2) WEATHER RADAR DC

 S 864-028
 (2)  AIRPLANES WITH COLLINS WXR-700X WEATHER RADAR SYSTEMS; Make sure this circuit breaker is open with a DO-NOT-CLOSE tag attached:
 (a)  P6 Load Control Center - Right
 1) WEATHER RADAR R/T

 S 034-014
 (3)  Remove the dust caps from the electrical connectors.
 S 214-077
 CAUTION: CAREFULLY ALIGN THE WAVEGUIDE FLANGES AND ELECTRICAL
_______ CONNECTORS. DAMAGE TO THE EQUIPMENT CAN OCCUR.
 (4)  Do a check of the waveguide connection.
 (a)  Make sure there is no dirt or moisture.
 S 424-005
 (5)  
Do this task to install the WXR R/T: Install the Rack Mounted E/E box (Ref 20-10-07/201).

 (6)  
Supply electrical power (Ref 24-22-00/201).

 S 864-031
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 864-066
 (7)  AIRPLANES WITH SPERRY PRIMUS 90 WEATHER RADAR SYSTEMS; Remove the DO-NOT-CLOSE tags and close these circuit breakers:
 (a)  P6 Load Control Center - Right
 1) WEATHER RADAR AC
 2) WEATHER RADAR DC

 S 864-039
 (8)  AIRPLANES WITH COLLINS WXR-700X WEATHER RADAR SYSTEMS; Remove the DO-NOT-CLOSE tags and close this circuit breaker:
 (a)  P6 Load Control Center - Right
 1) WEATHER RADAR R/T

 S 714-045
 (9)  
AIRPLANES WITH SPERRY PRIMUS 90 WEATHER RADAR SYSTEM; Do the operational test of the weather radar system (AMM 34-41-00/501).

 S 714-072

 (10)
 AIRPLANES WITH COLLINS WXR-700 WEATHER RADAR SYSTEMS; Do the operational test of the weather radar system (AMM 34-41-02/501).
　
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