EFFECTIVITY
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(6)
Secure section 3 to each waveguide support bracket with two screws, two nuts and four washers. Tighten screws only enough to support the waveguide.
(7)
Install gasket on bulkhead and tighten screws.
(8)
Install screws and lockwashers between sections 2 and 3 with gasket.
(9)
Install screws and lockwashers between sections 3 and 4 with gasket.
(10)
Tighten screws on forward and aft waveguide support brackets.
D. Install reflectometer or waveguide section 4.
(1)
Perform step C(2) to remove the center and right cargo floor panels.
(2)
Remove protective covers from waveguide flanges.
(3)
Install four screws and lockwashers in flanges with gasket between section 3 and reflectometer or waveguide section 4.
(4)
Install four screws and lockwashers in flanges with gasket between reflectometer and section 5.
E. Install waveguide section 5.
(1)
Perform step C(2) to remove the center and right cargo floor panels.
(2)
Remove protective covers from the waveguide flanges.
(3)
Move waveguide switch with flexible R/T feeder waveguide away from waveguide switch support bracket.
(4)
Place section 5 flange with gasket between waveguide switch and support bracket.
(5)
Install four screws and lockwashers through waveguide switch support bracket, section 5 flange and into waveguide switch.
(6)
Install four screws and lockwashers with gaskets between section 5 and reflectometer or section 4.
12. Install Waveguide - Freighter Airplanes with Bendix RDR-1F Weather Radar
________________________________________________________________________
NOTE: Replace gaskets if they are defective.
____
A. Install waveguide section 1.
(1)
Open nose radome to gain access to waveguide section 1 (Ref 34-43-03).
(2)
Remove protective covers from waveguide flanges and antenna waveguide connections.
(3)
Connect waveguide section 1 to antenna using quick disconnect.
(4)
Install four screws, lockwashers and flat washers with gasket in flanges between sections 1 and 2 and flange support angle.
(5)
Install waveguide clamp over section 1 waveguide and secure with two screws.
B. Install waveguide section 2.
(1)
Open nose radome to gain access to waveguide section 2 (Ref 34-43-03).
(2)
Remove protective covers from waveguide flanges.
(3)
Install four screws, lockwashers and flat washers with gasket in flanges between section 1 and 2 and flange support angle.
(4)
Install two screws and lockwashers in flanges between sections 2 and 3 with gasket.
(5)
Install waveguide clamp over section 2 waveguide and secure with two screws.
C. Install waveguide section 3.
EFFECTIVITY
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(1)
Open nose radome to gain access to waveguide section 3 (Ref 34-43-03).
(2)
To gain access to section 3 below the compartment floor perform the following:
(a)
Remove the center cargo floor panel by disengaging eight fasteners.
(b)
Remove the right cargo floor panel by disengaging five fasteners.
(3)
Slide section 3 into the airplane through the bulkhead hole.
(4)
Remove protective covers from waveguide flanges.
(5)
Support section 3 and position waveguide tabs on aft and forward waveguide support brackets.
(6)
Secure section 3 to each waveguide support bracket with two screws, two nuts and four washers. Tighten screws only enough to support the waveguide.
(7)
Install gasket on bulkhead and tighten screws.
(8)
Install screws and lockwashers between sections 2 and 3 with gasket.
(9)
Install screws and lockwashers between sections 3 and 4 with gasket.
(10)
Tighten screws on forward and aft waveguide support brackets.
D. Install reflectometer( waveguide section 4).
(1)
Perform step C(2) to remove the center and right cargo floor panels.
(2)
Remove protective covers from waveguide flanges.
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本文链接地址：747飞机维护手册AMM CHAPTER 34 - NAVIGATION 第34章导航4(14)
