R  **ON A/C 051-099, 106-149, 201-299, 301-399, 401-499,
 (Ref. Fig. 401A/TASK 34-41-37-991-001-B) **ON A/C 151-199,
R  (Ref. Fig. 401B/TASK 34-41-37-991-001-C) **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
 Subtask 34-41-37-420-051 A. Install the Weather Radar Transceiver (Ref. TASK 34-41-33-400-003). **ON A/C 051-099,
 Subtask 34-41-37-420-051-A A. Install the Weather Radar Transceivers (Ref. TASK 34-41-33-400-003).

__________________________________________________
 TASK 34-41-41-000-001
 Removal of the Wave Guide Assembly
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific blanking caps
 No specific circuit breaker(s) safety clip(s)
 No specific access platform 1.6 m (5 ft. 3 in.)
 No specific access platform 3.5 m (11 ft. 6 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
53-15-11-010-001 Opening of the Radome 110AL
 34-41-41-991-001 Fig. 401

 3. Job Set-up
__________
 Subtask 34-41-41-865-050

 A. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
 -------------------------------------------------------------------------------
121VU COM NAV/RADAR/1 5SQ1 K13

R **ON A/C 051-099,
R 121VU COM NAV/RADAR/2 5SQ2 K14
 1EFF : ALL 1 34-41-41Page 401 1 1 May 01/05 1 1 1CES 1R **ON A/C ALL

 Subtask 34-41-41-010-050
 B. Get Access
 (1)
 In the cockpit, put a warning notice on the center pedestal to tell persons not to operate the weather radar.

 (2)
 Put the access platform in position.

 (3)
 Open the radome 110AL (Ref. TASK 53-15-11-010-001).

 (4)
 Put the access platform in position at the access door 811.

 (5)
 Open the access door 811.

 4. Procedure
_________ (Ref. Fig. 401/TASK 34-41-41-991-001) WARNING : MAKE SURE THAT THE CIRCUIT BREAKERS RELATED TO THE WEATHER RADAR
_______
 ARE OPENED, SAFETIED AND TAGGED.

 Subtask 34-41-41-020-050
 A. Removal of the Flexible Wave Guide Part (10) Connected to the Mounting Tray of the Weather Radar Transceiver
 (1)
 Remove the lockwire and then the four screws (18) and the four washers (17).

 (2)
 Disconnect the flange (11). Remove and discard the two O-rings (13) and (16) and the adaptor (12).

 (3)
 At the other end, remove the lockwire and then the four screws (5) and washers (6).

 (4)
 Disconnect the flange (9) from the flange (7).
 Remove and discard the O-ring (8).

 (5)
 Remove the flexible wave guide part (10).

 (6)
 Put blanking caps on the disconnected ends.

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 Wave Guide Assembly
 Figure 401/TASK 34-41-41-991-001
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 1  1
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 Subtask 34-41-41-020-051
 B. Removal of the Rigid Wave Guide Part (14) Installed in the Avionics
 Compartment

 (1)
 Remove the lockwire and then the four screws (5) and the four washers (6).

 (2)
 Disconnect the flange (9). Remove and discard the O-ring (8).

 (3)
 At the wave guide feedthrough (25), remove the lockwire and then the four screws (36) and the four washers (35).

 (4)
 Hold the wave guide part (14) and remove the screw (21) and the washer (20) which attach the clamp (19) to the structure.

 (5)
 Move the rigid wave guide part (14) away from the structure. Remove and discard the O-ring (24).

 (6)
 Remove the clamp (19) and the two half bushings (22) from the wave guide.

 (7)
 Remove the rigid wave guide part (14).