W DOC AIRBUS | AMM A320F

Installation of the Visor Assembly

TASK 54-52-12-400-802-A
Installation of the Visor Assembly

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND THE RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
ZONE: 410
ZONE: 420
FIN: 4020KM1
FIN: 4020KM2
1. Reason for the Job
Self explanatory
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific
AR
WARNING NOTICE(S)
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.08BAA9)
Non Aqueous Cleaner-General - -
(Material No.14SBA1)
Textile-Lint free Cotton -
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
410
ENG 1 PYLON BOX AND FORWARD FAIRING
420
ENG 2 PYLON BOX AND FORWARD FAIRING
411AL, 421AL
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AL
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 54-52-11-000-807-A
Removal of the Access Skin Panels
TASK 54-52-11-400-807-A
Installation of the Access Skin Panels
TASK 71-13-00-010-803-A
Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A
Closing of the Fan Cowl Doors
TASK 78-30-00-040-807-A
Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU)
TASK 78-30-00-440-807-A
Reactivation of the Thrust Reverser System after Nacelle Maintenance (ICU)
F Visor Assembly
3. Job Set-up
Subtask 54-52-12-941-054-A
A. Safety Precautions
   (1) On the center pedestal, on ENG panel 115VU:
     (a) Make sure that the ENG/MODE selector switch is in the NORM position.
     (b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
     (c) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the ENG/MODE selector switch and the ENG/MASTER 1(2) control switch.
   (2) On the ENG section of maintenance panel 50VU:
     (a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).
Subtask 54-52-12-040-056-A
B. Deactivation of the Thrust Reverser
WARNING: MAKE SURE THAT THE THRUST REVERSER IS LOCKED. IF NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE REVERSER.
   (1) Make sure that the thrust reverser is unserviceable for maintenance (Ref. AMM TASK 78-30-00-040-807).
Subtask 54-52-12-010-055-A
C. Get Access
   (1) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position:
     (a) For the left pylon, in zone 410
     (b) For the right pylon, in zone 420.
   (2) Make sure that the access skin panel is removed (Ref. AMM TASK 54-52-11-000-807):
     (a) For the left pylon: 411AL
     (b) For the right pylon: 421AL.
   (3) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AL.
Subtask 54-52-12-110-051-A
D. Preparation for Installation
   (1) Make sure that the parts retained from the removed component are clean and in the correct condition.
   (2) If they are not sufficiently clean, clean the parts retained from the removed component with Non Aqueous Cleaner-General - - (Material No.08BAA9) and Textile-Lint free Cotton - (Material No.14SBA1) .
   (3) Do an inspection of the component interfaces and the adjacent area.
4. Procedure
Subtask 54-52-12-420-051-A
A. Installation of the Visor Assembly
F Visor Assembly
CAUTION: MAKE SURE THAT YOU INSTALL EACH OF THE SCREWS IN ITS CORRECT POSITION. THE SCREWS HAVE DIFFERENT LENGTHS. IF YOU DO NOT INSTALL EACH OF THE SCREWS IN ITS CORRECT POSITION, YOU CAN CAUSE DAMAGE.
   (1) Put and hold the visor assembly (6) in position.
   (2) Install the bolts (1) and (7).
   (3) Install the washers (2) and (5) and the nuts (3) and (4).
   (4) Tighten the nuts (3) and (4).
Subtask 54-52-12-420-052-A
B. Installation of the Components
   (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AL.
   (2) Install the access skin panel (Ref. AMM TASK 54-52-11-400-807):
     (a) For the left pylon: 411AL
     (b) For the right pylon: 421AL.
Subtask 54-52-12-820-051-A
C. Clearance Check
F Visor Assembly
   (1) Make sure that peripheral clearance J1 between visor assembly (6) and access skin panel 411AL ( 421AL) (8) is 4 +1 mm or -1 mm (0.1575 +0.0394 in. or -0.0394 in.).
5. Close-up
Subtask 54-52-12-440-052-A
A. Reactivation of the Thrust Reverser
   (1) Make the thrust reverser serviceable after maintenance (Ref. AMM TASK 78-30-00-440-807).
Subtask 54-52-12-942-051-A
B. Aircraft Maintenance Configuration
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Remove the access platform(s).
   (3) Remove the WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.01 02:02:08 UTC
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