(4)
Install waveguide switch on waveguide switch support bracket and secure with a gasket and four screws and lockwashers.
(5)
Install both R/T feeder waveguide with gaskets and secure with four screws and lockwashers on each flange.
(6)
Install electrical connector on waveguide switch.
EFFECTIVITY
ALL 07 Page 409 Oct 25/9634-43-04
6. Remove Waveguide On All Passenger Airplanes (Fig. 401)
___________________________________________
NOTE: In order to provide sufficient body axis movement to separate mating
____ waveguide flanges, it may be necessary to loosen support clamps on other waveguide sections to provide sufficient movement toward a flexible section.
A. Remove waveguide section 1.
(1)
Open nose radome to gain access to waveguide section 1 (Ref 34-43-03).
(2)
Remove waveguide quick disconect from weather radar antenna.
(3)
Remove four screws and lockwashers from flanges between sections 1 and 2.
(4)
Remove two screws and support clamp from section 1.
(5)
Remove section 1 with gasket.
(6)
Place protective covers over exposed waveguide flanges.
B. Remove waveguide section 2.
(1)
Open nose radome to gain access to waveguide section 2 (Ref 34-43-03).
(2)
Remove four screws and lockwashers from flange between sections 1 and 2.
(3)
Remove four screws and lockwashers from flange between sections 2 and 3.
(4)
Remove two screws and support clamp and section 2.
(5)
Remove section 2 with gasket.
(6)
Place protective covers over exposed waveguide flanges.
C. Remove waveguide section 3.
NOTE: To remove waveguide section 3, access is required inside the nose
____ radome and into the right crawlway forward of the main electronic equipment center.
(1)
Open nose radome to gain access to waveguide section 3 (Ref 34-43-03).
(2)
Remove four screws and lockwashers from flange between sections 2 and 3.
(3)
Remove four screws and lockwashers from flange between sections 3 and 4.
(4)
Remove eight screws from bulkhead flange.
(5)
Remove two screws and locknuts and four washers at each section 3 support clamp.
(6)
Support and carefully remove section 3 forward through hole in bulkhead.
(7)
Place protective covers over exposed waveguide flanges.
D. Remove waveguide section 4.
NOTE: To remove waveguide section 4, access is required into the right
____ crawlway forward of the main electronic equipment center.
(1) Remove waveguide guard from section 4.
EFFECTIVITY
ALL 09 Page 410 Oct 25/9634-43-04
(2)
Remove four screws and lockwashers from flange between sections 3 and 4.
(3)
Remove four screws and lockwashers from flange between sections 4 and 5.
(4)
Remove two screws and locknuts and four washers at each section 4 support clamp.
(5)
Remove section 4 and gasket.
(6)
Place protective covers over exposed waveguide flanges.
E. Remove reflectometer or waveguide section 5.
NOTE: To remove reflectemeter or waveguide section 5 , access is required into the right crawlway forward of the main electronic equipment center.
(1)
Remove four screws and lockwashers between sections 4 and reflectometer or waveguide section 5.
(2)
Remove four screws and lockwashers from flange between reflectometer or section 5 and section 6.
(3)
Remove support clamp and section 5.
(4)
Place protective covers over exposed waveguide flanges.
F. Remove waveguide section 6.
NOTE: To remove waveguide section 6, access is required into the right
____ crawlway forward of the main electronic equipment center.
G. Remove the No. 1 and No. 2 receiver/transmitters from the forward equipment center rack (AMM 34-43-02/401).
(1)
Remove four screws and lockwashers from flange connecting section 6 to waveguide switch. Separate section 6 from waveguide switch.
(2)
Remove four screws and lockwashers from flange connecting section 6 to waveguide switch or R/T mount waveguide. Separate section 6 from waveguide switch, or R/T mount waveguide.
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747飛機維護手冊AMM CHAPTER 34 - NAVIGATION 第34章導航4(9)
