A320飞机维护手册 AMM NAVIGATION 导航4(93)

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 (1) Remove the used sealant from the fuselage with CLEANING AGENTS (Material No. 11-003) and a nonmetallic scraper.
 NOTE : If you install the same antenna it is necessary to clean it____ with a lint-free cloth.
 (2) Do an inspection of the component interface and/or the adjacent area.
 NOTE : Make sure that the antenna attachment screw-head recesses have____ no signs of paint, corrosion or sealant because the antenna electrical bonding is made through the attachment screws.
 (3) Apply masking tape to the structure (1), the edge of the antenna (4), the screw holes and the hole for the antenna connector.

 

 (4)
 Apply SPECIAL MATERIALS (Material No. 05-013) on the antenna (4) mount and on the fuselage (1).

 (5)
 Apply SEALANTS (Material No. 09-019) on the antenna (4) mount and on the fuselage (1) (Ref. TASK 51-76-11-300-001).

 NOTE : Make sure that there is no sealant in the screw holes.
____
 (6)
 Remove the blanking caps from the coaxial connectors (2) and (3).

 (7)
 Install the new O-ring seal (6).

 (8)
 Connect the coaxial connector (2) to the antenna (4).

 (9)
 Put the antenna (4) in position on the fuselage (1).

 (10)
 Attach the antenna (4) with the screws (5).

 (11)
 Remove the sealant which is not necessary with a nonmetallic scraper.

 (12)
 Make sure that the bonding contact resistance between the antenna (4) and the fuselage structure (1) is not higher than 5 milliohms (Ref. TASK 20-28-00-912-005).

 (13)
 Apply a sealing bead with SEALANTS (Material No. 09-016) around the antenna (4) (Ref. TASK 51-76-11-300-001).

 (14)
 Apply SEALANTS (Material No. 09-016) on the heads of the screws (5).

 (15)
 Make the contour of the screws (5) and the antenna (4) smooth.

 (16)
 Apply STRUCTURE PAINTS (Material No. 16-003) to the sealant around the base of the antenna (4).

R (17) Apply PAINTS FOR DETAIL (INTERNAL AND EXTERN AL) (Material No. 07-R 001B) to the sealant on the head of the screws (5).
 Subtask 34-51-11-865-054
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): FOR 3SD1 1SD1 FOR 3SD2 1SD2
 1EFF : ALL 1 34-51-11Page 407 1 1 May 01/99 1 1 1CES 1 Subtask 34-51-11-720-050

 C. Do the functional test of the DME with tool (Ref. TASK 34-51-00-720-001) or the operational test of the DME without tool (Ref. TASK 34-51-00-710-001).
 5. Close-up
________ Subtask 34-51-11-410-050
 A. Make sure that the work area is clean and clear of tool(s) and other items.
 1EFF : ALL 1 34-51-11Page 408 1 1 Feb 01/98 1 1 1CES 1

 INTERROGATOR - DME (2SD1,2SD2) - REMOVAL/INSTALLATION
_____________________________________________________ TASK 34-51-33-000-001 Removal of the DME Interrogator (2SD1,2SD2)
 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.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
34-51-33-991-001 Fig. 401
 3. Job Set-up
__________ Subtask 34-51-33-865-050
 A. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 2SD1
 49VU NAV/DME/1 1SD1 G14 FOR 2SD2 121VU COM NAV/DME/2 1SD2 K06
 1EFF : ALL 1 34-51-33Page 401 1 1 Feb 01/98 1 1 1CES 1 Subtask 34-51-33-010-050

 B. Get Access
 (1)
 Put the access platform in position at the access door 824 in zone

 128.

 (2)
 Open the access door 824.

 4. Procedure
_________
 (Ref. Fig. 401/TASK 34-51-33-991-001) Subtask 34-51-33-020-050
 A. Removal of the DME Interrogator
 (1)
 Loosen the nuts (4).

 (2)
 Lower the nuts (4).

 (3)
 Pull the DME interrogator (1) on its rack (3) to disconnect the electrical connectors (2).
　
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