ALL  05 Page 401  Apr 25/9834-43-03

Nose Radome Unlatching
Figure 401

EFFECTIVITY ALL

7A5 Page 402
34-43-03
 Apr 25/88
BASE
BASE
CASTING
ASSEMBLY
BOLTS
BOLTS
FLAT PLATE RADIATOR ANTENNA
ANTENNA MOUNT HOLES
QUICK-DISCONNECT WAVEGUIDE FITTING
MOUNTING BOLTS (4 PLACES)
ELECTRICAL
CONNECTIONS

RCA AVQ-30X WEATHER RADAR

Weather Radar Antenna Removal/Installation
Figure 402 (Sheet 1)

268809
EFFECTIVITY

AF 101-120,123-156,158,159,172-182,185-199; SN 301-350; IB 405; 799 Page 403MD ALL; GN ALL; VM ALL Sep 25/94
34-43-03
BASE BASE CASTING ASSEMBLY BOLTS BOLTS
ANTENNA MOUNT HOLES WEATHERWEATHER RADARRADAR ANTENNAANTENNA
FREIGHTER AIRPLANES WITH BENDIX PASSENGER AIRPLANES WITH BENDIX RDR-1F WEATHER RADAR RDR-1F WEATHER RADAR
Weather Radar Antenna Removal/Installation Figure 402 (Sheet 2)
778712
EFFECTIVITY

LH ALL; AT ALL; AZ ALL;
AF 151,161; IB 406-499799 Page 404

34-43-03
 Sep 25/94
BASE
CASTING BASE
BOLTS
ASSEMBLY BOLTS
ANTENNA MOUNT HOLES
MOUNTING BOLTS (4 PLACES)
QUICK-DISCONNECT WAVEGUIDE FITTING
RECEIVER
TRANSMITTER
(2 PLACES)

WAVEGUIDE
Weather Radar Antenna
Figure 402 (Sheet 3)

EFFECTIVITY

AF 157,161;
SN 351-399 797 Page 405

34-43-03
 Sep 25/94
E44825
BASE ASSEMBLY
BASE BOLTS
CASTING BOLTS
ANNTENNA MOUNT HOLES
COLLINS WXR-700X WEATHER RADAR
Weather Radar Antenna
Figure 402 (Sheet 4)

WEATHER RADAR ANTENNA
779028
EFFECTIVITY

AF 160,162-171,183,184
799 Page 406
34-43-03
Sep 25/94
 F.  Observing No-Handhold placards, lift antenna up and over the two upper antenna retaining boltheads, and remove antenna from mount.
 WARNING: THE RCA AVQ-30X AND BENDIX RDR-1F ANTENNA ASSEMBLY WEIGHS
_______ APPROXIMATELY 50 POUNDS, THE BENDIX RDR-4A ANTENNA ASSEMBLY WEIGHS APPROXIMATELY 30 POUNDS AND THE COLLINS WXR-700X ANTENNA ASSEMBLY WEIGHS APPROXIMATELY 25 POUNDS. REMOVAL REQUIRES TWO MEN AND A SECURE PLATFORM. HANDLE CAREFULLY TO PREVENT INJURY TO PERSONNEL OR DAMAGE TO PRECISION REFLECTOR.
 G.  Place protective covers over antenna connection and waveguide.
 5.  AF 121, 122; SN 351-399; Remove Planar Array (Fig. 403)___________________
 A.  References
 (1)  
IPC 34-43-03 Fig. 1

 (2)  
AMM 34-43-03/401, Nose Radome

 B.  Access
 (1)  Location Zone
 111 Radome

 C.  Procedure
 (1)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  P7 Overhead Circuit Breaker Panel
 1) WXR L RT
 2) WXR L IND
 3) WXR R RT
 4) WXR R IND

 (2)  
Open the nose radome (AMM 34-43-00/401).

 (3)  
Remove the antenna planar array:

 CAUTION: DURING THE PLANAR ARRAY REMOVAL, PREVENT THE MOVEMENT OF
_______ THE ANTENNA DRIVE ASSEMBLY. THE PLANAR ARRAY WILL MOVE BECAUSE OF A TORQUE SPRING.
 CAREFULLY REMOVE THE PLANAR ARRAY TO PREVENT DAMAGE TO IT.
 (a)  
Remove the four screws and lockwashers that attach the waveguide flange of the planar array and the drive assembly.

 (b)  
Remove the eight screws and lockwashers that attach the planar array to the ring mount.

 WARNING: DURING A PLANAR ARRAY REMOVAL, USE TWO PERSONS AND A
_______ SAFETY INSTALLED WORKSTAND. THE ANTENNA ARRAY WEIGHS APPROXIMATELY 7 POUNDS.
 BE CAREFUL WITH THE PLANAR ARRAY DURING THE REMOVAL. CAREFULLY REMOVE THE PLANAR ARRAY TO PREVENT INJURY TO YOU OR DAMAGE TO THE PLANAR ARRAY.
 (c)  Carefully remove the planar array.
 EFFECTIVITY
 
 ALL  09 Page 407  Oct 25/9734-43-03
PLANAR ARRAY

RING MOUNT SCREW (8 EACH)
CAUTION:PLANAR ARRAY IS COUNTERBALANCED BY A TORQUE SPRING. RESTRICT ROTOR ASSEMBLY MOVEMENT WHEN REMOVING PLANAR ARRAY FROM ROTOR ASSEMBLY.
NOTE:TIGHTEN SCREWS TO 24-33 INCH-POUNDS.
Planar Array Removal/Installation
Figure 403

EFFECTIVITY AF 121,122;

799 Page 408
34-43-03SN 351-399
Sep 25/94
 778757
ELEVATION ZERO MONITOR A5
SEE A
GUIDE PINS SEE B MOUNTING FLANGE FWD WXR ANTENNA PEDESTAL
　
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